This Australian Standard was prepared by Committee WD-001, Welding Definitions
and Symbols. It was approved on behalf of the Council of Standards Australia on
25 November 2004.
This Standard was published on 31 March 2005.
The following are represented on Committee WD-001:
Australian Industry Group
Bureau of Steel Manufacturers of Australia
New Zealand Heavy Engineering Research Association
Welding Technology Institute of Australia
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This Standard was issued in draft form for comment as DR 04480.
AS 1101.3—2005
Australian Standard™
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Graphical symbols for general
engineering
Part 3: Welding and non-destructive
examination
Originated as AS Z6—1955.
Previous edition AS 1101.3—1987.
Third edition 2005.
COPYRIGHT
© Standards Australia
All rights are reserved. No part of this work may be reproduced or copied in any form or by
any means, electronic or mechanical, including photocopying, without the written
permission of the publisher.
Published by Standards Australia GPO Box 5420, Sydney, NSW 2001, Australia
ISBN 0 7337 6555 6
AS 1101.3—2005
2
PREFACE
This Standard was prepared by the Joint Standards Australia/Standards New Zealand
Committee WD-001, Welding Definitions and Symbols, to supersede AS 1101.3—1987.
The 1987 edition of the Standard was generally based on ANSI/AWS A2.4-79, Symbols for
Welding and Non-destructive Testing, and the permission of the American Welding Society
Inc. to use their Standard was acknowledged.
This edition continues to follow the ANSI/AWS A2.4, and takes cognizance of its 1998
edition.
The main changes in this edition include—
(a)
the use of a new symbol for edge weld to replace the symbols for flange edge and
corner welds (see Section 6); and
(b)
the introduction of a symbol for stud weld (see Section 11).
In addition, the format of the Standard has been changed and editorial changes have been
included in line with current Standards Australia policy.
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The Standard provides a scheme whereby complete details of welds and welded joints can
be delineated on drawings. A separate section covers symbols for use on drawings to
specify requirements for non-destructive examination for determining the soundness of
materials.
The method for symbolic representation of welds on engineering drawings used in this
standard is consistent with the ‘third angle’ method of projection, which is the preferred
method given in AS 1100, Technical drawing, Part 101: General principles. It should be
noted, however, that the scheme is equally appropriate to drawings in which the ‘first angle’
method of projection is used.
The committee noted the practice currently adopted in ISO 2553, Welded, brazed and
soldered joints; symbolic representation on drawings, in regard to the position of the
symbols on drawings, viz., the dual reference line, and felt that this situation should not be
carried over into this Standard. Therefore, the practice of using one continuous reference
line remains unaltered in this edition.
Illustrations used with the text are intended only to show how symbols may be used to
convey welding or testing information and do not necessarily represent good or accepted
design practice.
The terms ‘normative’ and ‘informative’ have been used in this Standard to define the
application of the appendix to which they apply. A ‘normative’ appendix is an integral part
of a Standard, whereas an ‘informative’ appendix is only for information and guidance.
3
AS 1101.3—2005
CONTENTS
Page
SECTION 1 SCOPE AND GENERAL
1.1 SCOPE ........................................................................................................................ 5
1.2 REFERENCED DOCUMENTS .................................................................................. 5
1.3 DEFINITIONS ............................................................................................................ 5
1.4 DESIGN AND DIMENSIONS OF STANDARD SYMBOLS..................................... 5
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SECTION 2 BASIC PRINCIPLES
2.1 BASIC SYMBOLS...................................................................................................... 6
2.2 BASIC TYPES OF JOINTS AND WELDS................................................................. 6
2.3 GENERAL PROVISIONS........................................................................................... 9
SECTION 3 SYMBOLS FOR FILLET WELDS
3.1 GENERAL ................................................................................................................ 29
3.2 SIZE OF FILLET WELDS ........................................................................................ 29
3.3 LENGTH OF FILLET WELDS................................................................................. 30
3.4 EXTENT OF FILLET WELDING............................................................................. 33
3.5 DIMENSIONING OF INTERMITTENT FILLET WELDING.................................. 33
3.6 TERMINATION OF INTERMITTENT FILLET WELDING ................................... 34
3.7 COMBINATION OF INTERMITTENT AND CONTINUOUS FILLET WELDING34
3.8 FILLET WELDS IN HOLES AND SLOTS .............................................................. 34
3.9 SURFACE FINISH AND CONTOUR OF FILLET WELDS .................................... 36
3.10 SKEWED JOINTS .................................................................................................... 38
SECTION 4 SYMBOLS FOR BUTT WELDS
4.1 GENERAL ................................................................................................................ 39
4.2 DEPTH OF PREPARATION AND DESIGN THROAT THICKNESS OF BUTT
WELDS ..................................................................................................................... 39
4.3 JOINT PREPARATION DIMENSIONS ................................................................... 51
4.4 SURFACE FINISH AND CONTOUR OF BUTT WELDS ....................................... 54
4.5 BACKING RUN OR BACKING WELDS ................................................................ 55
4.6 JOINT WITH BACKING .......................................................................................... 58
4.7 JOINT WITH SPACER ............................................................................................. 59
4.8 CONVENTION FOR BACK GOUGING AFTER WELDING ONE SIDE ............... 61
SECTION 5 SYMBOLS FOR SURFACING
5.1 GENERAL ................................................................................................................ 62
5.2 USE OF SURFACING SYMBOL ............................................................................. 62
5.3 SIZE (THICKNESS) OF SURFACES BUILT UP BY WELDING ........................... 62
5.4 EXTENT, LOCATION, AND ORIENTATION OF SURFACES BUILT UP BY
WELDING ................................................................................................................ 62
5.5 SURFACING A WELD FACE.................................................................................. 64
SECTION 6 SYMBOLS FOR EDGE WELDING
6.1 GENERAL ................................................................................................................ 65
6.2 EDGE WELD SIZE................................................................................................... 65
6.3 SINGLE- AND DOUBLE-EDGE WELDS ............................................................... 65
6.4 EDGE WELDS REQUIRING COMPLETE JOINT PENETRATION....................... 65
6.5 EDGE WELDS ON JOINTS WITH MORE THAN TWO MEMBERS..................... 65
6.6 LENGTH OF EDGE WELDS ................................................................................... 65
6.7 INTERMITTENT EDGE WELDS ............................................................................ 65
AS 1101.3—2005
4
SECTION 7 SYMBOLS FOR PLUG WELDING
7.1 GENERAL ................................................................................................................ 70
7.2 SIZE OF PLUG WELDS........................................................................................... 71
7.3 ANGLE OF COUNTERSINK ................................................................................... 72
7.4 DEPTH OF FILLING ................................................................................................ 72
7.5 SPACING OF PLUG WELDS................................................................................... 72
7.6 SURFACE CONTOUR OF PLUG WELDS .............................................................. 74
SECTION 8 SYMBOLS FOR SLOT WELDING
8.1 GENERAL ................................................................................................................ 75
8.2 DEPTH OF FILLING ................................................................................................ 77
8.3 DETAILS OF SLOT WELDS ................................................................................... 77
8.4 SURFACE FINISH AND CONTOUR OF SLOT WELDS........................................ 79
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SECTION 9 SYMBOLS FOR SPOT WELDING
9.1 GENERAL ................................................................................................................ 80
9.2 SIZE AND STRENGTH OF SPOT WELDS ............................................................. 82
9.3 SPACING OF SPOT WELDS ................................................................................... 82
9.4 EXTENT OF SPOT WELDING ................................................................................ 82
9.5 NUMBER OF SPOT WELDS ................................................................................... 84
9.6 GROUPED SPOT WELDS ....................................................................................... 85
9.7 FLUSH SPOT-WELDED JOINTS ............................................................................ 85
9.8 MULTIPLE-JOINT SPOT WELDS .......................................................................... 86
SECTION 10 SYMBOLS FOR SEAM WELDING
10.1 GENERAL ................................................................................................................ 87
10.2 SIZE AND STRENGTH OF SEAM WELDS............................................................ 89
10.3 LENGTH OF SEAM WELDS ................................................................................... 90
10.4 DIMENSIONING OF INTERMITTENT SEAM WELDS ........................................ 91
10.5 ORIENTATION OF SEAM WELDS ........................................................................ 92
10.6 FLUSH SEAM-WELDED JOINTS........................................................................... 92
10.7 MULTIPLE-JOINT SEAM WELDS ......................................................................... 92
SECTION 11 SYMBOLS FOR STUD WELDING
11.1 SIDE SIGNIFICANCE .............................................................................................. 93
11.2 STUD SIZE ............................................................................................................... 93
11.3 SPACING OF STUD WELDS................................................................................... 93
11.4 NUMBER OF STUD WELDS................................................................................... 93
11.5 DIMENSION LOCATION ........................................................................................ 94
11.6 LOCATION OF FIRST AND LAST STUD WELDS................................................ 94
SECTION 12 SYMBOLS FOR BRAZED JOINTS
12.1 GENERAL ................................................................................................................ 95
12.2 JOINT PREPARATION ............................................................................................ 96
SECTION 13 SYMBOLS FOR NON-DESTRUCTIVE EXAMINATION
13.1 BASIC SYMBOLS.................................................................................................... 98
13.2 GENERAL PROVISIONS....................................................................................... 100
13.3 METHODS OF SPECIFYING EXTENT OF NON-DESTRUCTIVE
EXAMINATION ..................................................................................................... 103
APPENDICES
A
ABBREVIATIONS OF TERMS FOR WELDING AND ALLIED PROCESSES ... 106
B
DESIGN OF STANDARD SYMBOLS ................................................................... 110
5
AS 1101.3—2005
STANDARDS AUSTRALIA
Australian Standard
Graphical symbols for general engineering
Part 3: Welding and non-destructive examination
SECT ION
1
SCOPE
AND
GENERA L
1.1 SCOPE
This Standard describes symbols that provide the means of placing complete welding
information on drawings. It covers the details of symbols and requirements for their
application in various welding processes (including brazing), and non-destructive
examination.
NOTE: Appendix A gives a listing of abbreviations normally used for welding and allied
processes.
1.2 REFERENCED DOCUMENTS
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The following Standard is referred to in this Standard:
AS
2812
Welding, brazing and cutting of metals—Glossary of terms
1.3 DEFINITIONS
For the purpose of this Standard, the definitions given in AS 2812 shall apply.
1.4 DESIGN AND DIMENSIONS OF STANDARD SYMBOLS
The design and dimensions of standard symbols shall be as shown in Appendix B.
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SE C T ION
2
BAS I C
PR I NC IP L E S
2.1 BASIC SYMBOLS
2.1.1 Distinction between weld symbol and welding symbol
This Standard makes a distinction between the terms weld symbol and welding symbol. The
weld symbol (see Figure 2.1) indicates the type of weld. The welding symbol (see
Figure 2.3) is a method of representing the weld symbol on drawings, and includes
supplementary information and consists of the following eight elements:
(a)
Reference line (shown horizontally).
(b)
Arrow.
(c)
Basic weld symbols.
(d)
Dimensions and other data.
(e)
Supplementary symbols.
(f)
Finish symbols.
(g)
Tail.
(h)
Specification, process, or other references.
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NOTE: Not all of the above elements need to be used unless required for clarity.
2.1.2 Illustrations
Examples given, including dimensions (in millimetres), are illustrative only and are
intended to facilitate communications. They are not intended to represent best design
practices or to replace code or specification requirements.
2.1.3 Basic weld symbols
Basic weld symbols shall be as shown in Figure 2.1. The symbols shall be drawn ‘on’ the
reference line (shown dotted).
2.1.4 Supplementary symbols
Supplementary symbols to be used in connection with welding symbols shall be as shown in
Figure 2.2.
2.1.5 Standard location of elements of a welding symbol
The elements of a welding symbol shall have standard locations with respect to each other
as shown in Figure 2.3. Specification and process references should be shown in the tail of
the welding symbol.
2.2 BASIC TYPES OF JOINTS AND WELDS
2.2.1 Basic types of joints
The basic types of joints are shown in Figure 2.4.
2.2.2 Applicable welds
Applicable welds in basic types of joints are listed in Figure 2.4.
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AS 1101.3—2005
FIGURE 2.1 BASIC WELD SYMBOLS
FIGURE 2.2 SUPPLEMENTARY SYMBOLS
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FIGURE 2.3 STANDARD LOCATION OF ELEMENTS OF A WELDING SYMBOL
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AS 1101.3—2005
FIGURE 2.4 BASIC TYPES OF JOINTS
2.3 GENERAL PROVISIONS
2.3.1 Location significance of arrow
2.3.1.1 General
The location significance of the arrow is shown in Figure 2.5.
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FIGURE 2.5 LOCATION SIGNIFICANCE OF ARROW
2.3.1.2 Butt, fillet, and flange weld symbols
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For symbols for butt, fillet, and flange welds, the arrow shall connect the welding symbol
reference line to one side of the joint and this side shall be considered the arrow side of the
joint. The side opposite the arrow side of the joint shall be considered the other side of the
joint (see Figure 2.6).
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AS 1101.3—2005
FIGURE 2.6 APPLICATION OF ARROW SIDE AND OTHER SIDE CONVENTION
2.3.1.3 Plug, slot, spot, seam and projection weld symbols
For symbols for plug, slot, spot, seam, and projection welds, the arrow shall connect the
weld symbol reference line to the outer surface of one of the members of the joint at the
centre-line of the desired weld. The member towards which the arrow points shall be
considered the arrow side member. The other member of the joint shall be considered the
other side member. (See figures cited in Sections 7 to 10 inclusive.)
2.3.1.4 Symbols with no side significance
Some weld symbols have no arrow side or other side significance, although supplementary
symbols used in conjunction with them may have significance (see Figure 2.7 and
Clauses 9.1.2 and 9.1.4).
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FIGURE 2.7 SYMBOLS WITH NO SIDE SIGNIFICANCE
2.3.2 Location of weld with respect to joint
2.3.2.1 Arrow side
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Welds on the arrow side of the joint shall be shown by placing the weld symbol on the side
of the reference line towards the reader (see Figure 2.8 and Clause 2.3.1.1).
FIGURE 2.8 WELDS ON ARROW SIDE
2.3.2.2 Other side
Welds on the other side of the joint shall be shown by placing the weld symbol on the side
of the reference line away from the reader (see Figure 2.9 and Clause 2.3.1.1).
FIGURE 2.9 WELDS ON OTHER SIDE
2.3.2.3 Both sides
Welds on both sides of the joint shall be shown by placing weld symbols on both sides of
the reference line, towards and away from the reader (see Figure 2.10 and Clause 2.3.1.1).
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AS 1101.3—2005
FIGURE 2.10 WELDS ON BOTHS SIDES
2.3.3 Method of drawing symbols
Symbols may be drawn mechanically or freehand, as desired. Symbols intended to appear in
publications or otherwise to be of high precision may be drawn with the dimensions and
proportions shown in Appendix B.
2.3.4 Location of a specification, procedure, process, or other reference
2.3.4.1 Symbols with references
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Where a specification, procedure, process, or other reference is used with a welding
symbol, the reference shall be placed in the tail (see Figure 2.11).
FIGURE 2.11 REFERENCE LOCATION
2.3.4.2 Symbols without reference
Where desired, symbols may be used without specification, process, or other references in
the following instances:
(a)
Where a note such as the following appears on the drawing:
‘Unless otherwise designated, all welds are to be made in accordance with
Specification No. ….’
(b)
Where the welding procedure to be used is prescribed elsewhere, such as in shop
instructions and process sheets.
2.3.4.3 General notes
Where desired, general notes such as the following may be placed on a drawing to provide
detailed information pertaining to the pre-dominant welds:
‘Unless otherwise indicated, all fillet welds are 6 mm in size.’
‘Unless otherwise indicated, root gaps for all butt welds are 3 mm.’
The information need not be repeated on the symbols.
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2.3.4.4 Process indication
Where use of a definite process is required, the process shall be indicated by letter
designations.
NOTE: See Appendix A for abbreviations of terms for welding and allied processes.
FIGURE 2.12 PROCESS INDICATION
2.3.4.5 Symbol without tail
Where no specification, process, or other reference is used with a welding symbol, the tail
may be omitted.
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2.3.5 Site weld symbol
Site welds (welds not made in a shop or at the place of initial construction) shall be
indicated by means of the site weld symbol. The flag shall point away from the arrow. (See
Figure 2.13.)
FIGURE 2.13 USE OF SITE WELD SYMBOL
2.3.6 Symbol for complete penetration from one side
2.3.6.1 Use
The symbol for complete penetration from one side shall be used only where complete joint
or member penetration plus reinforcement is required in welds made from one side only
(see Figure 2.14).
2.3.6.2 Location
The symbol for complete penetration from one side shall be placed on the side of the
reference line opposite to the weld symbol (see Figure 2.14).
2.3.6.3
Dimensions
Dimensions of complete penetration need not be shown on the welding symbol. If it is
desired to specify height of reinforcement, it shall be shown on the drawing (see
Figure 2.14).
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AS 1101.3—2005
FIGURE 2.14 APPLICATION OF SYMBOL FOR COMPLETE PENETRATION
FROM ONE SIDE
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2.3.7 Contour and surface finish methods for complete penetration from one side
2.3.7.1 Flush contour
Complete penetration welds from one side that is to be made flush by mechanical means
shall be shown by adding both the flush contour symbol and the required finish symbol to
the symbol for complete penetration from one side (see Clause 2.3.10 and Figure 2.15).
FIGURE 2.15 INDICATION OF FLUSH CONTOUR
2.3.7.2 Convex contour
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Complete penetration welds from one side that is to be mechanically finished to a convex
contour shall be shown by adding both the convex contour symbol and the required finish
symbol to the symbol for complete penetration from one side (see Clause 2.3.10 and
Figure 2.16).
FIGURE 2.16 INDICATION OF CONVEX CONTOUR
2.3.8 Extent of welding denoted by symbols
2.3.8.1 Abrupt changes
Symbols apply between abrupt changes in the direction of the welding or to the extent of
hatching or dimension lines, except where the weld-all-around symbol is used (see
Figures 2.19 and 2.20).
2.3.8.2 Hidden joints
Where the welding of the hidden joint is the same as that of the visible joint, the welding on
hidden joints may be covered, as shown in Figure 2.17. In such case, a section is desirable
but is not necessary. The drawing shall indicate the presence of hidden members. If the
welding on the hidden point is different from that of the visible joint, specific information
for the welding of both shall be given. If needed for clarification, auxiliary illustrations or
views shall be added.
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AS 1101.3—2005
DIMENSIONS IN MILLIMETRES
FIGURE 2.17 EXAMPLE OF HIDDEN JOINT
2.3.8.3 Approximate location
Where the exact location of the weld is not critical, it may be indicated as in Figure 2.19(d).
2.3.8.4 Use of weld-all-around symbol
Welds extending completely around a joint shall be indicated by the weld-all-around
symbol (see Figure 2.18).
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Welds that are completely around a joint that includes more than one type of weld,
indicated by a combination weld symbol, shall be designated by the weld-all-around
symbol. Welds completely around a joint in which the metal intersections at the points of
welding are in more than one plane shall also be indicated by the weld-all-around symbol
(see Figure 2.20(c)).
FIGURE 2.18 USE OF WELD-ALL-AROUND SYMBOL
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AS 1101.3—2005
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FIGURE 2.19 DESIGNATION OF LOCATION AND EXTENT OF FILLET WELDS
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AS 1101.3—2005
FIGURE 2.20 (in part) DESIGNATION OF EXTENT OF WELDING
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FIGURE 2.20 (in part) DESIGNATION OF EXTENT OF WELDING
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AS 1101.3—2005
FIGURE 2.20 (in part) DESIGNATION OF EXTENT OF WELDING
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FIGURE 2.21 APPLICATION OF CRANK IN ARROW OF WELDING SYMBOL
(BEVEL-BUTT WELD)
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AS 1101.3—2005
FIGURE 2.22 APPLICATION OF CRANK IN ARROW OF WELDING SYMBOL
(J-BUTT WELD)
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FIGURE 2.23 COMBINATION OF WELD SYMBOLS SHOWING CRANK IN ARROW
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AS 1101.3—2005
FIGURE 2.24 APPLICATION OF ELECTROGAS WELDING AND ELECTROSLAG
WELDING WITH COMBINATION OF WELD SYMBOLS
2.3.9 Weld continuity
Unless otherwise indicated, all welds shall be continuous.
2.3.10 Finishing of welds
Finishing of welds, other than cleaning, shall be indicated by suitable contour and finish
symbols. The following finishing symbols indicate the method, not the degree of finish:
(a)
C — Chipping.
(b)
G — Grinding.
(c)
M — Machining.
(d)
R — Rolling.
(e)
P — Peening.
(See Clauses 2.3.7, 3.9, 4.4, 4.5.3, 7.6, 8.4, 9.6 and 10.6.)
2.3.11 Construction of symbols
Fillet, bevel and J-butt, flare-bevel-butt, and corner-flange weld symbols shall be shown
with the perpendicular leg always to the left (see Figure 2.25).
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FIGURE 2.25 CONSTRUCTION OF SYMBOLS
2.3.12 Crank in arrow
Where one member of a joint is to be prepared, the arrow shall point with a definite crank
towards that member (see Figure 2.26, and also Figures 2.21 and 2.22).
FIGURE 2.26 CRANK IN ARROW
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2.3.13 Reading of information on welding symbols
Information on welding symbols shall be placed to read from left to right along the
reference line in accordance with the usual conventions of drafting.
2.3.14 Combined weld symbols
For joints having more than one weld, a symbol shall be shown for each weld (see
Figures 2.23 and 2.24).
2.3.15 Complete penetration
The letters ‘CP’ in the tail of the arrow indicate a complete penetration weld regardless of
the type of weld or joint preparation (see Clause 4.2.7 and Figure 4.14).
2.3.16 Designation of special types of weld
Where the basic weld symbols are inadequate to indicate the desired weld, the weld shall be
shown by a cross-section, detail, or other data with a reference thereto on the welding
symbol in accordance with the location conventions given in Clause 2.3.1 (see Figure 2.27).
FIGURE 2.27 DESIGNATIONS OF SPECIAL WELD TYPES
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AS 1101.3—2005
2.3.17 Multiple reference lines
2.3.17.1 Sequence of operations
Two or more reference lines may be used to indicate a sequence of operations. The first
operation is shown on the reference line nearest the arrow. Subsequent operations are
shown sequentially on other reference lines. (See Figure 2.28.)
FIGURE 2.28 INDICATION OF SEQUENCE OF OPERATION
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2.3.17.2 Supplementary data
Additional reference lines may be used to show data supplementary to welding symbol
information included on the reference line nearest to the arrow (see Figure 2.29).
FIGURE 2.29 USE OF ADDITIONAL REFERENCE LINE FOR SUPPLEMENTARY DATA
2.3.17.3 Test information
Test information may be shown on a second or third reference line away from the arrow as
described in Section 12.
2.3.17.4 Supplementary symbols
Where required, the weld-all-around symbol or test-all-around symbol shall be placed at the
junction of the arrow line and reference line for each operation to which it is applicable.
The site weld symbol may also be applied in the same manner. (See Figure 2.30.)
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FIGURE 2.30 USE OF SUPPLEMENTARY SYMBOL WITH MULTIPLE
REFERENCE LINE
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SECT ION
3
SYMBO L S
AS 1101.3—2005
FOR
F I L L E T
WE LDS
3.1 GENERAL
3.1.1 Dimensioning fillets
Dimensions of fillet welds shall be shown on the same side of the reference line as the weld
symbol (see Figures 2.19, 3.4 and 3.5).
3.1.2 Symbols with no general note
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Where no general note governing the dimensions of fillet welds appears on the drawing, the
dimensions of fillet welds on both sides of the joint shall be shown (see Figures 3.1
and 3.2).
FIGURE 3.1 WELDS WITH SAME DIMENSIONS
FIGURE 3.2 WELDS WITH DIFFERENT DIMENSIONS
3.1.3 Symbols with general note
Where a general note appears on the drawing governing the dimensions of fillet welds, such
as ‘unless otherwise indicated, all fillet welds are 8 mm in size’, the dimensions of fillet
welds need not be shown on the symbol.
3.2 SIZE OF FILLET WELDS
3.2.1 Location
The size of a fillet weld shall be shown to the left of the weld symbol (see Figure 3.4(a),
(b), (c) and (d)).
NOTE: Examples shown in Figure 3.4 are for joints without root gaps. For root gaps caused by
workmanship tolerances, the appropriate application standard should be followed for fillet weld
sizes.
3.2.2 Unequal legs
The size of a fillet weld with unequal legs shall be indicated to the left of the weld symbol.
Weld orientation is not indicated by the symbol and shall be shown on the drawing when
necessary. (See Figure 3.4(d).)
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3.2.3 Minimum size
Unless otherwise indicated, the deposited fillet weld size shall be not less than the size
shown on the drawing.
3.2.4 Penetration
Where penetration for a given root opening is specified, as in Figure 3.8(a), the inspection
method for determining penetration depth is to be included in the applicable specification.
3.3 LENGTH OF FILLET WELDS
3.3.1 Location
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The length of a fillet weld, where indicated on the welding symbol, shall be shown to the
right of the weld symbol (see Figure 3.3 and Figure 3.4(f)).
FIGURE 3.3 LENGTH OF FILLET WELDS
3.3.2 Abrupt changes
Where fillet welding extends for the full distance between abrupt changes in the direction of
the welding (see Clause 2.3.8), no length dimension need be shown on the welding symbol
(see Figure 3.4(e)).
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AS 1101.3—2005
FIGURE 3.4 APPLICATION OF DIMENSIONS TO FILLET WELD SYMBOLS
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FIGURE 3.5 APPLICATION OF DIMENSIONS TO INTERMITTENT FILLET
WELD SYMBOLS
3.3.3 Specific lengths
Specific lengths of fillet welding may be indicated by symbols in conjunction with
dimension lines (see Figure 3.6, and also Figure 2.19(a) and (c)).
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AS 1101.3—2005
FIGURE 3.6 INDICATION OF SPECIFIC LENGTHS OF FILLET WELDS
3.4 EXTENT OF FILLET WELDING
3.4.1 Hatching
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Where it is desired to shown the extent of fillet welding graphically, the location of the
weld may be shown by hatching (see Figure 3.7).
FIGURE 3.7 EXTENT OF FILLET WELDING SHOWN BY HATCHING
3.4.2 Welds beyond abrupt changes
Fillet welding extending beyond abrupt changes in the direction of the welding shall be
indicated by means of additional arrows pointing to each section of the joint to be welded,
as shown in Figure 2.20(a), except where the weld-all-around symbol is used.
3.5 DIMENSIONING OF INTERMITTENT FILLET WELDING
Dimensioning of intermittent fillet welding shall be as follows:
(a)
The pitch (centre-to-centre spacing) of intermittent fillet welding shall be shown as
the distance between centres of increments on one side of the joint (see Figure 3.5).
(b)
The pitch (centre-to-centre spacing) of intermittent fillet welding shall be shown to
the right of the length dimension (see Figure 3.5).
(c)
Dimensions of chain intermittent fillet welding shall be shown on both sides of the
reference line. Chain intermittent fillet welds shall be opposite each other as shown in
Figure 3.5(b).
(d)
Dimensions of staggered intermittent fillet welding shall be shown on both sides of
the reference line using the convention shown in Figure 3.5(c).
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3.6 TERMINATION OF INTERMITTENT FILLET WELDING
3.6.1 Intermittent fillets only
Where intermittent fillet welding is used by itself, the symbol indicates that increments
shall be located at the ends of the dimensioned length (see Figure 2.19(b)).
3.6.2 Intermittent welds between continuous welds
Where intermittent fillet welding is used between continuous fillet welds, the symbol
indicates that spaces equal to the pitch minus the length of one increment shall be left at the
ends of the dimensioned length (see Figures 2.19(a) and 3.5(a)).
3.7 COMBINATION
WELDING
OF
INTERMITTENT
AND
CONTINUOUS
FILLET
Separate welding symbols shall be used for intermittent and continuous fillet welding where
the two are used in combination along one side of the joint (see Figure 2.19(a)).
3.8 FILLET WELDS IN HOLES AND SLOTS
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Fillet welds in holes and slots shall be shown by means of fillet weld symbols (see
Figure 3.8(b)).
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AS 1101.3—2005
FIGURE 3.8 (in part) APPLICATION OF FILLET WELD SYMBOLS
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FIGURE 3.8 (in part) APPLICATION OF FILLET WELD SYMBOLS
3.9 SURFACE FINISH AND CONTOUR OF FILLET WELDS
3.9.1 Contours obtained by welding
Fillet welds that are to be welded approximately flat, convex, or concave, without recourse
to any method of finishing, shall be shown by adding the flush, convex, or concave contour
symbol to the weld symbol, in accordance with the location conventions given in
Clause 2.3.1 (see Figure 3.9).
FIGURE 3.9 INDICATION OF WELD CONTOUR WITHOUT MECHANICAL MEANS
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AS 1101.3—2005
3.9.2 Flat contour by mechanical means
Fillet welds that are to be made flat faced by mechanical means shall be shown by adding
both the flush contour symbol and the required finish symbol to the weld symbol, in
accordance with the location conventions given in Clause 2.3.1 (see Clause 2.3.10 and
Figure 3.10).
FIGURE 3.10 FLAT CONTOUR BY MECHANICAL MEANS
3.9.3 Convex contour by mechanical means
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Fillet welds that are to be mechanically finished to a convex contour shall be shown by
adding both the convex contour symbol and the required finish symbol to the weld symbol,
in accordance with the location conventions given in Clause 2.3.1 (see Clause 2.3.10 and
Figure 3.11).
FIGURE 3.11 CONVEX CONTOUR BY MECHNICAL MEANS
3.9.4 Concave contour by mechanical means.
Fillet welds that are to be mechanically finished to a concave contour shall be shown by
adding both the concave contour symbol and the required finish symbol to the weld symbol,
in accordance with the location conventions given in Clause 2.3.1 (see Clause 2.3.10 and
Figure 3.12).
FIGURE 3.12 CONCAVE CONTOUR BY MECHANICAL MEANS
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3.10 SKEWED JOINTS
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Where the angle between fusion faces is such that the identification of the type of weld and
hence the proper weld symbol is in question, the detail of the desired joint and weld
configuration shall be shown on the drawing.
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SECT ION
4
SYMBO L S
AS 1101.3—2005
FOR
BU TT
WE LDS
4.1 GENERAL
4.1.1 Dimension location
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Dimensions showing preparation of butt welds shall be indicated on the same side of the
reference line as the weld symbol (see Figure 4.2, and also Figure 4.1).
FIGURE 4.1 APPLICATION OF DIMENSIONS TO BUTT WELD SYMBOLS
(BUTT WELD SYMBOL SHOWING USE OF COMBINED DIMENSIONS)
4.1.2 Double-butt dimensions
Where no general note governing the dimensions of welds appears on the drawing, the
dimensions of double-butt welds shall be shown on both welds (see Figures 4.3 and 4.4).
4.1.3 Cranked arrow
For bevel-butt, J-butt and corner flange welds, a cranked arrow shall be used to indicate
which member is prepared, as described in Clause 2.3.12 (see Figure 4.5).
4.1.4 Dimensions in general note
Where a general note appears on the drawing governing the dimensions of butt welds, such
as ‘unless otherwise noted, all V-butt welds shall have a 60° groove angle’, and neither butt
weld need be dimensioned.
4.2 DEPTH OF PREPARATION AND DESIGN THROAT THICKNESS OF BUTT
WELDS
4.2.1 Location
The depth of groove preparation (S) and design throat thickness (D) of a butt weld shall be
shown to the left of the weld symbol (see Figures 4.6 to 4.9).
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4.2.2 Complete joint penetration required
Where no depth of groove preparation or design throat thickness is shown on the welding
symbol for single-butt and symmetrical double-butt welds, complete joint penetration is
required (see Figure 4.6(d) and (e)).
FIGURE 4.2 DIMENSIONS LOCATION FOR BUTT WELDS
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FIGURE 4.3 WELDS WITH SAME DIMENSIONS
FIGURE 4.4 WELDS WITH DIFFERENT DIMENSIONS
FIGURE 4.5 USE OF CRANKED ARROW
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AS 1101.3—2005
FIGURE 4.6 DESIGNATION OF DESIGN THROAT THICKNESS OF BUTT WELDS
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FIGURE 4.7 EXAMPLES OF DIFFERENT RELATIONSHIPS BETWEEN DEPTH
OF PREPARATION ‘S’ AND DESIGN THROAT THICKNESS (D)
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AS 1101.3—2005
FIGURE 4.8 DESIGNATION OF DESIGN THROAT THICKNESS OF BUTT WELDS
WITH SPECIFIED DEPTH OF PREPARATION
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FIGURE 4.9 DESIGNATION OF DESIGN THROAT THICKNESS OF BUTT WELDS
WITHOUT SPECIFIED DEPTH OF PREPARATION
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AS 1101.3—2005
FIGURE 4.10 DESIGNATION OF DESIGN THROAT THICKNESS
OF COMBINED WELDS
4.2.3 Partial joint penetration specified, depth of preparation not specified
The design throat thickness of butt welds that extend only partly through the member or
members being joined shall be shown in parentheses on the welding symbol (see
Figure 4.11, and also Figure 4.7(a), (b), (c) and (d)).
FIGURE 4.11 PARTIAL JOINT PENETRATION
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4.2.4 Depth of preparation specified, design throat thickness not specified, or
specified elsewhere
A dimension not in parentheses placed to the left of the symbol for a bevel weld, V-butt
weld, J-butt weld, or U-butt weld indicates only the depth of preparation (see Figure 4.12).
FIGURE 4.12 INDICATION OF DEPTH OF PREPARATION ONLY
4.2.5 Depth of preparation and design throat thickness specified
Except for square-butt welds, the design throat thickness (D) in relation to the depth of
groove preparation S shall be shown to the left of the weld symbol. The design throat
thickness (D) only is shown for the square-butt weld. (See Figure 4.13 and Figures 4.8, 4.9
and 4.10.) The design throat thickness (D) shall always be enclosed in brackets.
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In no case shall the total design throat thickness exceed the thickness of the thinner member
of the weld joint.
FIGURE 4.13 INDICATION OF DEPTH OF PREPARATION AND
DESIGN THROAT THICKNESS
4.2.6 Special case of requirement of Clause 4.2.5—Design throat thickness where
specified less than depth of preparation
Where it is desired to indicate a design throat thickness (D) less than the depth of
preparation S, (D) is shown less than S on the welding symbol (see Figures 4.7(c) and 4.16).
4.2.7 Joint preparation optional, complete penetration required
Contract design drawings, or other drawings where conditions dictate, may allow optional
joint preparation with complete joint penetration required by placing the letters ‘CP’ in the
tail of the arrow and omitting the weld symbol (see Figure 4.14).
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AS 1101.3—2005
FIGURE 4.14 COMPLETE PENETRATION REQUIRED,
JOINT PREPARATION OPTIONAL
4.2.8 Joint preparation optional, design throat thickness specified
For contract design drawings where conditions dictate, the design throat thickness may be
specified by placing the dimension D on the arrow side or other side of the reference line as
required but omitting the weld symbol (see Figure 4.15).
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FIGURE 4.15 PARTIAL PENETRATION SPECIFIED, JOINT PREPARATION OPTIONAL
4.2.9 Flare-butt welds
The dimension S of flare-butt welds is considered as extending only to the tangent points
indicated below by dimension lines (see Figure 4.16).
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AS 1101.3—2005
FIGURE 4.16 (in part) APPLICATION OF FLARE-BEVEL-BUTT AND FLARE-V-BUTT
WELD SYMBOLS
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FIGURE 4.16 (in part) APPLICATION OF FLARE-BEVEL-BUTT AND FLARE-V-BUTT
WELD SYMBOLS
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AS 1101.3—2005
4.3 JOINT PREPARATION DIMENSIONS
4.3.1 Root gap
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The root gap of butt welds shall be shown inside the weld symbol (see Figure 4.17).
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FIGURE 4.17 DESIGNATION OF ROOT GAP OF BUTT WELDS
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AS 1101.3—2005
4.3.2 Preparation angle
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The preparation angle of butt welds shall be shown outside the weld symbol (see
Figure 4.18).
FIGURE 4.18 DESIGNATION OF PREPARATION ANGLE OF BUTT WELDS
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4.3.3 Radii and root faces
Radii and land of U-butt and J-butt welds shall be shown by a cross-section, detail, or other
data, with reference thereto on the welding symbol, in accordance with the location
conventions given in Clause 2.3.1 (see Figure 4.19).
FIGURE 4.19 EXAMPLES OF INDICATING DETAILS OF RADII AND ROOT FACES
4.4 SURFACE FINISH AND CONTOUR OF BUTT WELDS
4.4.1 Contours obtained by welding
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Butt welds that are to be welded approximately flush, without recourse to any method of
finishing, shall be shown by adding the flush contour symbol to the weld symbol, in
accordance with the location conventions given in Clause 2.3.1 (see Figure 4.20 and
Figure 4.25(a)).
FIGURE 4.20 INDICATION OF FLUSH CONTOUR WITHOUT MECHANICAL MEANS
4.4.2 Flush contour by mechanical means
Butt welds that are to be made flush by mechanical means shall be shown by adding both
the flush contour symbol and the required finish symbol to the weld symbol, in accordance
with the location conventions given in Clause 2.3.1 (see Figure 4.21, Figure 4.25 and
Clause 2.3.10).
FIGURE 4.21 INDICATION OF FLUSH CONTOUR BY MECHANICAL MEANS
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AS 1101.3—2005
4.4.3 Convex contour by mechanical means
Butt welds that are to be mechanically finished to a convex contour shall be shown by
adding both the convex contour symbol and the required finish symbol to the weld symbol,
in accordance with the location conventions given in Clause 2.3.1 (see Figure 4.22,
Figure 4.25(c) and Clause 2.3.10).
FIGURE 4.22 INDICATION OF CONVEX CONTOUR BY MECHANICAL MEANS
4.5 BACKING RUN OR BACKING WELDS
4.5.1 General
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The backing run or backing weld symbol shall be used to indicate bead type backing run or
backing welds or single-butt welds (see Figure 4.26).
4.5.2 Backing run or backing weld symbol
Backing runs or backing welds of single-butt welds shall be shown by placing a backing run
or backing weld symbol on the side of the reference line opposite the butt weld symbol (see
Figure 4.23 and also Figure 4.26).
FIGURE 4.23 USE OF BACKING RUN OR BACKING WELD SYMBOL
4.5.3 Surface contour of backing run or backing welds
4.5.3.1 Contours obtained by welding
Backing run or backing welds that are to be welded approximately flush without recourse to
any method of finishing shall be shown by adding the flush contour symbol to the backing
run or backing weld symbol (see Figure 4.24).
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FIGURE 4.24 INDICATION OF FLUSH CONTOUR WITHOUT MECHANICAL MEANS
FIGURE 4.25 APPLICATION OF FLUSH AND CONVEX CONTOUR SYMBOLS
TO BUTT WELD SYMBOLS
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AS 1101.3—2005
FIGURE 4.26 APPLICATION OF BACKING RUN OR BACKING WELD SYMBOL WITH
AND WITHOUT GOUGING
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4.5.3.2 Flush contour by mechanical means
Backing runs or backing welds that are to be made flush by mechanical means shall be
shown by adding both the flush contour symbol and the required finish symbol to the
backing run or backing weld symbol (see Figure 4.27 and Clause 2.3.10).
FIGURE 4.27 INDICATION OF FLUSH CONTOUR BY MECHANICAL MEANS
4.5.3.3 Convex contour by mechanical means
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Backing run or backing welds that are to be mechanically finished to a convex contour shall
be shown by adding both the convex contour symbol and the required finish symbol to the
backing run or backing weld symbol (see Figure 4.28 and Clause 2.3.10).
FIGURE 4.28 INDICATION OF CONVEX CONTOUR BY MECHANICAL MEANS
4.6 JOINT WITH BACKING
A joint with backing shall be shown as a combination of the butt weld symbol on one side
of the reference line and a rectangle on the opposite side in which shall be included one of
two notations as shown in Figure 4.29.
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AS 1101.3—2005
FIGURE 4.29 JOINT WITH BACKING
4.7 JOINT WITH SPACER
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A joint with spacer shall be shown with the butt weld symbol modified to show a rectangle
within it, and the rectangle shall include a notation as shown in Figure 4.30.
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FIGURE 4.30 JOINTS WITH SPACERS
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AS 1101.3—2005
4.8 CONVENTION FOR BACK GOUGING AFTER WELDING ONE SIDE
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A second reference line may be used (see Clause 2.3.17) for a second operation, which
cannot be performed until after the first is completed. Back gouging and welding as a
second operation are thus indicated as shown in Figure 4.31.
FIGURE 4.31 INDICATION OF BACK GOUGING AFTER WELDING
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SECT ION
62
5
SYMBO L S
FOR
SURFAC I N G
5.1 GENERAL
The surfacing symbol shall be used to indicate surfaces built up by welding for such
purposes as the following:
(a)
Correcting dimensions.
(b)
Transition between dissimilar metals.
(c)
Corrosion resistance.
(d)
Wear resistance.
NOTE: See Figure 5.1.
5.2 USE OF SURFACING SYMBOL
5.2.1 Symbol application
Surfaces built up by welding, whether by single-pass or multiple-pass surfacing welds, shall
be shown by the surfacing symbol (see Figure 5.1).
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5.2.2 Arrow side significance
The surfacing symbol does not indicate the welding of a joint and, therefore, has no arrow
or other side significance. The symbol shall be drawn beneath the reference line and the
arrow shall point clearly to the surface on which the weld is to be deposited. (See
Figure 5.1.)
5.2.3 Dimension location
Dimensions used in conjunction with the surfacing symbol shall be shown on the same side
of the reference line as the weld symbol (see Figure 5.1).
5.3 SIZE (THICKNESS) OF SURFACES BUILT UP BY WELDING
5.3.1 Minimum thickness
The size of a surface to be built up by welding shall be indicated by showing the minimum
thickness of the weld deposit to the left of the weld symbol (see Figure 5.1(a)).
5.3.2 Unspecified thickness
Where no specific thickness of weld deposit is desired, no size dimension need be shown on
the welding symbol.
5.4 EXTENT, LOCATION, AND ORIENTATION OF SURFACES BUILT UP BY
WELDING
5.4.1 Entire area
Where the entire area of a plane or curved surface is to be built up by welding, no
dimension other than size (thickness of deposit) need be shown on the welding symbol (see
Figure 5.1(c)).
5.4.2 Portion of area
Where a portion of the area of a plane or curved surface is to be built up by welding, the
extent, location and orientation of the area to be built up shall be indicated on the drawing
(see Figure 5.1(d)).
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AS 1101.3—2005
FIGURE 5.1 APPLICATION OF SURFACING TO INDICATE SURFACES
BUILT UP BY WELDING
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5.5 SURFACING A WELD FACE
Where it is desired to show a subsequent surfacing operation over another weld, the
multiple reference line concept may be used with a fillet weld or butt weld as the first
operation and the surfacing operation the second (see Figure 5.2 and Clause 2.3.17).
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FIGURE 5.2 SURFACING A WELD FACE
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SE C T I O N
6
S YMB O L S
AS 1101.3—2005
FO R
E D G E
W E L D I N G
6.1 GENERAL
The edge welding symbol shall be used to specify edge welds on edge joints and flanged
butt or flanged corner joints. The full thickness of the joint members shall be fused. Flange
dimensions are considered part of the drawing and not specified by the welding symbol.
(See Figure 6.1.)
6.2 EDGE WELD SIZE
When specified, the edge weld size shall be indicated by a dimension placed to the left of
the edge weld symbol and on the same side of the reference line. If a specific edge weld
size is not required, the dimension may be omitted (see Figure 6.1(a) and (b)).
6.3 SINGLE- AND DOUBLE-EDGE WELDS
Single-edge welds may be specified on edge, flanged butt and flanged corner joints (see
Figures 6.1(b), (c) and (d)). Double-edge welds are only applicable to edge joints (see
Figure 6.1(a)). An edge weld may be combined with a flare-bevel or flare-V groove weld if
welds are required on both sides of a flanged butt or flanged corner joint (see Clause 4.2.9).
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6.4 EDGE WELDS REQUIRING COMPLETE JOINT PENETRATION
Edge welds requiring complete joint penetration shall be specified for either flanged butt or
flanged corner joints by the edge weld symbol with the complete penetration symbol placed
on the opposite side of the reference line (see Figures 6.1(e), (f) and (i)). No size
specification for the edge weld is necessary when combined with the complete penetration
symbol.
6.5 EDGE WELDS ON JOINTS WITH MORE THAN TWO MEMBERS
Edge welds can be specified for edge joints, flanged butt joints, or flanged corner joints
having more than two members by using the edge weld symbol in the same manner as for
joints having two members (see Figure 6.1(g), (h) and (i)).
6.6 LENGTH OF EDGE WELDS
The length of an edge weld, when indicated on the welding symbol, shall be specified to the
right of the weld symbol.
When an edge weld is to extend for the full length of the joint, no length dimension need be
specified on the welding symbol.
Specific lengths of edge welds and their location may be specified by symbols in
conjunction with dimension lines.
Hatching may be used to graphically depict edge welds.
6.7 INTERMITTENT EDGE WELDS
6.7.1 Pitch
The pitch of intermittent edge welds shall be the distance between the centres of adjacent
weld segments on one side of the joint.
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6.7.2 Pitch dimension location
The pitch of intermittent edge welds shall be specified to the right of the length dimension
following a hyphen.
6.7.3 Chain intermittent edge welds
Dimensions of chain intermittent edge welds shall be specified on both sides of the
reference line. The segments of chain intermittent edge welds shall be opposite one another
across the joint.
6.7.4 Staggered intermittent edge welds
Dimensions of staggered intermittent edge welds shall be specified on both sides of the
reference line, and the edge weld symbols shall be offset on opposite sides of the reference
line as shown below. The segments of staggered intermittent edge welds shall be
symmetrically spaced on both sides of the joint.
6.7.5 Extent of welding
In the case of intermittent edge welds, additional weld lengths that are intended at the ends
of the joint shall be specified by separate welding symbols and dimensioned on the
drawing. When no weld lengths are intended at the ends of the joint, the unwelded lengths
should not exceed the clear distance between weld segments and be so dimensioned on the
drawing.
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6.7.6 Location of intermittent welds
When the location of intermittent welds is not obvious, such as on a circular weld joint,
specific segment locations by dimension lines or by hatching shall be provided.
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AS 1101.3—2005
FIGURE 6.1 (in part) APPLICATION OF EDGE WELD SYMBOL
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AS 1101.3—2005
68
FIGURE 6.1 (in part) APPLICATION OF EDGE WELD SYMBOL
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AS 1101.3—2005
FIGURE 6.1 (in part) APPLICATION OF EDGE WELD SYMBOL
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AS 1101.3—2005
SECT ION
70
7
SYMBO L S
FOR
P L UG
WE LD I NG
7.1 GENERAL
7.1.1 Arrow side holes
Holes in the arrow side member of a joint to be plug welded shall be indicated by placing
the weld symbol on the side of the reference line toward the reader (see Figure 7.1(a)).
7.1.2 Other side holes
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Holes in the other side member of a joint to be plug welded shall be indicated by placing
the weld symbol on the side of the reference line away from the reader (see Figure 7.1(b)).
 Standards Australia
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AS 1101.3—2005
FIGURE 7.1 APPLICATION OF PLUG WELD SYMBOL
7.1.3 Dimensions
Dimensions of plug welds shall be shown on the same side of the reference line as the weld
symbol (see Figure 7.2).
7.1.4 Fillets in holes
The plug weld symbol shall not be used to designate fillet welds in holes (see Clause 3.8).
7.2 SIZE OF PLUG WELDS
The size of a plug weld shall be shown to the left of the weld symbol (see Figure 7.2(a)).
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AS 1101.3—2005
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7.3 ANGLE OF COUNTERSINK
Included angle of countersink of plug welds shall be shown on the symbol (see
Figure 7.2(b)).
7.4 DEPTH OF FILLING
Unless otherwise indicated, the depth of filling of plug welds shall be complete. Where the
depth of filling is less than complete, it shall be shown inside the weld symbol. (See
Figure 7.2(c).)
7.5 SPACING OF PLUG WELDS
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Pitch (centre-to-centre) of plug welds shall be shown to the right of the weld symbol (see
Figure 7.2(d)).
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AS 1101.3—2005
FIGURE 7.2 APPLICATION OF DIMENSIONS TO PLUG WELD SYMBOLS
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7.6 SURFACE CONTOUR OF PLUG WELDS
7.6.1 Flush welds without finishing
Plug welds that are to be welded approximately flush without recourse to any method of
finishing shall be shown by adding the flush contour symbol to the weld symbol (see
Figure 7.3).
FIGURE 7.3 FLUSH CONTOUR WITHOUT MECHANICAL MEANS
7.6.2 Flush welds mechanically finished
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Plug welds that are to be made flush by mechanical means shall be shown by adding both
the flush contour symbol and the required finish symbol to the weld symbol (see Figure 7.4
and Clause 2.3.10).
FIGURE 7.4 FLUSH CONTOUR BY MECHANICAL MEANS
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SECT ION
8
SYMBO L S
AS 1101.3—2005
FOR
S L OT
WE LD I NG
NOTE: This Section applies only to slot welds that are partially or completely filled. For fillet
welds in slots, see Clause 3.8.
8.1 GENERAL
8.1.1 Arrow side slots
Slots in the arrow side member of a joint to be slot welded shall be indicated by placing the
weld symbol on the side of the reference line toward the reader (see Figure 8.1(a)).
8.1.2 Other side slots
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Slots in the other side member of a joint to be slot welded shall be indicated by placing the
weld symbol on the side of the reference line away from the reader (see Figure 8.1(b)).
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FIGURE 8.1 APPLICATION OF SLOT WELD SYMBOL
8.1.3 Dimensions
Dimensions of slot welds shall be shown on the same side of the reference line as the weld
symbol (see Figure 8.2).
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AS 1101.3—2005
8.2 DEPTH OF FILLING
Unless otherwise indicated, the depth of filling of slot welds shall be complete. Where the
depth of filling is less than complete, the depth of filling shall be shown inside the weld
symbol. (See Figure 8.2(b).)
8.3 DETAILS OF SLOT WELDS
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Length, width, spacing, included angle of countersink, orientation, and location of slot
welds cannot be shown on the welding symbol. These data shall be shown on the drawing or
by a detail with a reference thereto on the welding symbol, in accordance with the location
conventions given in Clause 2.3.1. (See Figure 8.2.)
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FIGURE 8.2 APPLICATION OF DIMENSIONS TO SLOT WELD SYMBOL
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AS 1101.3—2005
8.4 SURFACE FINISH AND CONTOUR OF SLOT WELDS
8.4.1 Flush welds without mechanical means
Slot welds that are to be welded approximately flush without recourse to any method of
finishing shall be shown by adding the flush contour symbol to the weld symbol (see
Figure 8.3).
FIGURE 8.3 FLUSH CONTOUR WITHOUT MECHANICAL MEANS
8.4.2 Flush welds mechanically finished
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Slot welds that are to be made flush by mechanical means shall be shown by adding both
the flush contour symbol and the required finish symbol to the weld symbol (see Figure 8.4
and Clause 2.3.10).
FIGURE 8.4 FLUSH CONTOUR WITH MECHANICAL MEANS
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AS 1101.3—2005
80
SECT ION
9
SYMBO L S
FOR
SPOT
WE LD I NG
9.1 GENERAL
9.1.1 Arrow side significance
The spot weld symbol, in accordance with its location in relation to the reference line, may
or may not have arrow side or other side significance, depending on the process used.
9.1.2 Dimension location
Dimensions shall be shown on the same side of the reference line as the symbol, or on
either side where the symbol is located astride the reference line and has no arrow side or
other side significance (see Figure 9.1 and Figure 9.2).
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FIGURE 9.1 DIMENSION LOCATION FOR SPOT WELD
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AS 1101.3—2005
FIGURE 9.2 APPLICATION OF SPOT WELD SYMBOL
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9.1.3 Process reference
The process reference shall be indicated in the tail of the welding symbol (see
Clause 2.3.4.4).
9.1.4 Projection welds
Where projection welding is to be employed, the spot weld symbol shall be used with the
projection welding process reference in the tail of the welding symbol. The spot weld
symbol shall be centred above or below (not on) the reference line to designate in which
member the embossment is placed, in accordance with the location conventions given in
Clause 2.3.1.
9.2 SIZE AND STRENGTH OF SPOT WELDS
Spot welds shall be dimensioned by either size or strength as follows:
(a)
Size The size of spot welds shall be designated as the diameter of the weld, and shall
be shown to the left of the weld symbol (see Figure 9.3(a)).
(b)
Strength The strength of spot welds shall be designated in Newtons per spot, and
shall be shown to the left of the weld symbol (see Figure 9.3(b)).
9.3 SPACING OF SPOT WELDS
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The pitch (centre-to-centre spacing) of spot welds shall be shown to the right of the weld
symbol (see Figure 9.3(c)).
9.4 EXTENT OF SPOT WELDING
Where spot welding extends less than the distance between abrupt changes in the direction
of the welding, or less than the full length of the joint (see Clause 2.3.8), the extent shall be
dimensioned (see Figure 9.3(d)).
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AS 1101.3—2005
FIGURE 9.3 (in part) APPLICATION OF DIMENSIONS TO SPOT WELD SYMBOLS
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84
FIGURE 9.3 (in part) APPLICATION OF DIMENSIONS TO SPOT WELD SYMBOLS
9.5 NUMBER OF SPOT WELDS
Where a definite number of spot welds is desired in a certain joint, the number shall be
shown in parentheses either above or below the weld symbol (see Figure 9.4 and
Figure 9.3(e)).
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AS 1101.3—2005
FIGURE 9.4 INDICATION OF NUMBER OF SPOT WELDS
9.6 GROUPED SPOT WELDS
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A group of spot welds may be located on a drawing by intersecting centre-lines, with the
arrows pointing to at least one of the centre-lines passing through each weld location (see
Figure 9.5).
FIGURE 9.5 GROUPED SPOT WELDS
9.7 FLUSH SPOT-WELDED JOINTS
Where the exposed surface of either member of a spot-welded joint is to be flush, that
surface shall be indicated by adding the flush contour symbol to the weld symbol, in
accordance with the location conventions given in Clause 2.3.1 (see Figure 9.6).
FIGURE 9.6 FLUSH SPOT WELDS
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9.8 MULTIPLE-JOINT SPOT WELDS
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For spot welds, where one or more pieces are inserted between the two outer pieces, the
same symbol as for the two outer pieces shall be used regardless of the number of pieces
inserted.
 Standards Australia
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87
SECT ION
10
SYMBO L S
AS 1101.3—2005
FOR
SEAM
WE LD I NG
10.1 GENERAL
10.1.1 Arrow side significance
The seam weld symbol, in accordance with its location in relation to the reference line, may
or may not have arrow side or other side significance, depending on the process used.
10.1.2 Dimensions
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Dimensions shall be shown on the same side of the reference line as the symbol, or on
either side where the symbol is located astride the reference line and has no arrow side or
other side significance (see Figure 10.1 and Figure 10.2.)
FIGURE 10.1 DIMENSIONING SEAM WELD
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FIGURE 10.2 APPLICATION OF SEAM WELD SYMBOL
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AS 1101.3—2005
10.1.3 Process reference
The process reference shall be indicated in the tail of the welding symbol.
NOTE: For symbols relating to process, see Appendix A.
10.2 SIZE AND STRENGTH OF SEAM WELDS
Seam welds shall be dimensioned by either size or strength as follows:
Size The size of seam welds shall be designated as the width of the weld expressed
in millimetres and shall be shown to the left of the weld symbol (see Figure 10.3(a)).
(b)
Strength The strength of seam welds shall be designated in Newtons per millimetre
and shall be shown to the left of the weld symbol (see Figure 10.3(b)).
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(a)
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AS 1101.3—2005
90
FIGURE 10.3 APPLICATION OF DIMENSIONS TO SEAM WELD SYMBOLS
10.3 LENGTH OF SEAM WELDS
10.3.1 Dimension location
The length of seam, where indicated on welding symbols, shall be shown to the right of the
weld symbol (see Figure 10.4 and Figure 10.3(a)).
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AS 1101.3—2005
FIGURE 10.4 DIMENSION LOCATION FOR SEAM WELDS
10.3.2 Abrupt changes
Where a seam weld extends the full distance between abrupt changes in the direction of the
welding (see Clause 2.3.8), no length dimension need be shown on the welding symbol.
10.3.3 Specific lengths
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Where a seam weld extends less than the distance between abrupt changes in the direction
of the welding, or less than the full length of the joint, the extent shall be dimensioned (see
Figure 10.5 and Figure 10.3(c)).
FIGURE 10.5 SPECIFIC LENGTH OF SEAM WELD
10.4 DIMENSIONING OF INTERMITTENT SEAM WELDS
10.4.1 Pitch distance
The pitch (centre-to-centre spacing) of intermittent seam welds shall be shown as the
distance between centres of the weld increments.
10.4.2 Dimension location
The pitch (centre-to-centre spacing) of intermittent seam welds shall be shown to the right
of the length dimension (see Figure 10.6 and Figure 10.3(a)).
FIGURE 10.6 DIMENSION LOCATION FOR INTERMITTENT SEAM WELDS
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10.5 ORIENTATION OF SEAM WELDS
10.5.1 Intermittent welds
Unless otherwise indicated, intermittent seam welds shall be interpreted as having length
and pitch measured parallel to the axis of the weld (see Figure 10.3(a)).
10.5.2 Showing orientation
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Where the orientation of seam welds is not as in Clause 10.5.1, a detailed drawing shall be
used to show the weld orientation (see Figure 10.7).
FIGURE 10.7 ORIENTATION OF SEAM WELD
10.6 FLUSH SEAM-WELDED JOINTS
Where the exposed surface of either member of a seam-welded joint is to be flush, that
surface shall be indicated by adding the flush contour symbol to the weld symbol, in
accordance with the location conventions given in Clause 2.3.1 (see Figure 10.8).
FIGURE 10.8 FLUSH SEAM WELDS
10.7 MULTIPLE-JOINT SEAM WELDS
For seam welds, where one or more pieces are inserted between the two outer pieces, the
symbol used for the two outer pieces shall be used regardless of the number of pieces
inserted.
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93
SECT ION
11
SYMBO L S
AS 1101.3—2005
FOR
STUD
WE LD I NG
11.1 SIDE SIGNIFICANCE
The stud welding symbol has arrow-side significance only. The symbol shall be placed
below the reference line, and the arrow shall point clearly to the surface to which the stud is
to be welded (see Figure 11.1).
FIGURE 11.1 SIDE SIGNIFICANCE
11.2 STUD SIZE
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The required diameter of the stud shall be specified to the left of the weld symbol (see
Figures 11.2 and 11.5).
FIGURE 11.2 STUD SIZE
11.3 SPACING OF STUD WELDS
The pitch (centre-to-centre distance) of stud welds in a straight line shall be specified to the
right of the weld symbol (see Figures 11.3 and 11.5). The spacing of stud welds in any
configuration other than a straight line shall be dimensioned on the drawing.
FIGURE 11.3 SPACING OF STUD WELDS
11.4 NUMBER OF STUD WELDS
The number of stud welds shall be specified in parentheses below the stud weld symbol (see
Figures 11.4 and 11.5).
FIGURE 11.4 NUMBER OF STUD WELDS
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11.5 DIMENSION LOCATION
Dimensions shall be placed on the same side of the reference line as the stud weld symbol
(see Figure 11.5).
11.6 LOCATION OF FIRST AND LAST STUD WELDS
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The location of the first and last stud weld in each single line shall be specified on the
drawing (see Figure 11.5).
FIGURE 11.5 APPLICATIONS OF STUD WELD SYMBOL
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S E C T I O N
1 2
SY M B O L S
J O I NT S
AS 1101.3—2005
FO R
B RA ZE D
12.1 GENERAL
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Application of conventional welding symbols to brazed joints shall be as illustrated in
Figure 12.1. Figure 12.1(a) to (e) show how joint clearances can be indicated.
FIGURE 12.1 (in part) APPLICATION OF BRAZING SYMBOLS
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FIGURE 12.1 (in part) APPLICATION OF BRAZING SYMBOLS
12.2 JOINT PREPARATION
If no special joint preparation other than cleaning is required, only the arrow shall be used
with the brazing process indicated in the tail (see Figure 12.2).
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AS 1101.3—2005
FIGURE 12.2 BRAZING JOINTS WITH NO SPECIAL PREPARATION
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AS 1101.3—2005
98
SECT ION 13
SYMBO L S FOR NON DESTRUCT IV E EXAM I NAT I O N
13.1 BASIC SYMBOLS
13.1.1 Basic examination symbols
Basic non-destructive examination symbols shall be as follows:
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Type of examination
Acoustic emission
Eddy current
Leak
Magnetic particle
Neutron radiographic
Penetrant
Proof
Radiographic
Ultrasonic
Visual
Symbol
AEE
EE
LE
ME
NRE
PE
PRE
RE
UE
VE
13.1.2 Elements of the examination symbol
The examination symbol consists of the following elements:
(a)
Reference line:
Arrow.
Basic examination symbol.
Examine-all-around symbol.
Number of tests (N).
Examination in site.
(b)
Tail:
Specification or other reference.
13.1.3 Standard location of elements
The elements of an examination symbol shall have standard locations with respect to each
other as shown in Figure 13.1.
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FIGURE 13.1 STANDARD LOCATION OF ELEMENTS OF NON-DESTRUCTIVE EXAMINATION
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AS 1101.3—2005
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13.2 GENERAL PROVISIONS
13.2.1 Location significance of arrow
The arrow shall connect the reference line to the part to be examined. The side of the part to
which the arrow points shall be considered the arrow side of the part. The side opposite the
arrow side of the part shall be considered the other side.
13.2.2 Location of examination symbol
13.2.2.1 Arrow side location
Examinations to be made on the arrow side of the part shall be indicated by the examination
symbol on the side of the reference line towards the reader (see Figure 13.2).
FIGURE 13.2 EXAMINATIONS ON ARROW SIDE
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13.2.2.2 Other side location
Examinations to be made on the other side of the part shall be indicated by the examination
symbol on the side of the reference line away from the reader (see Figure 13.3).
FIGURE 13.3 EXAMINATIONS ON OTHER SIDE
13.2.2.3 Symbols on both sides
Examinations to be made on both sides of the part shall be indicated by examination
symbols on both sides of the reference line (see Figure 13.4).
FIGURE 13.4 EXAMINATIONS ON BOTH SIDES
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AS 1101.3—2005
13.2.2.4 Centred symbols
Where non-destructive examination symbols have no arrow or other side significance, the
testing symbols shall be centred on the reference line (see Figure 13.5).
FIGURE 13.5 EXAMINATIONS WITH NO ARROW OR OTHER SIDE SIGNIFICANCE
13.2.3 Direction of radiation
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Where specified, the direction of radiation may be shown in conjunction with the
radiographic and neutral radiographic examination symbols. The direction of radiation may
be indicated by a symbol located on the drawing at the desired angle (see Figure 13.6).
FIGURE 13.6 DIRECTION OF RADIATION
13.2.4 Combination of non-destructive examination symbols and welding symbols
13.2.4.1 Welding and non-destructive examination symbols
Non-destructive examination symbols and welding symbols may be combined as shown in
Figure 13.7.
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102
FIGURE 13.7 EXAMPLES OF COMBINATION OF WELD SYMBOLS AND NONDESTRUCTIVE EXAMINATION SYMBOLS
13.2.4.2 Non-destructive examination symbols alone
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Non-destructive examination symbols may be combined as shown in Figure 13.8.
FIGURE 13.8 EXAMPLES OF COMBINATION OF SYMBOLS FOR NON-DESTRUCTIVE
EXAMINATION ALONE
13.2.4.3 Arrow side significance
Where a non-destructive examination symbol having no arrow or other side significance is
combined with a symbol having such significance, the examination symbols may be
combined (see Figure 13.9).
FIGURE 13.9 EXAMPLES OF COMBINATION OF SYMBOLS WITH ARROW SIDE
SIGNIFICANCE AND NO ARROW OR OTHER SIDE SIGNIFICANCE
13.2.5 Use of references
Specifications or other references need not be used on examination symbols where the
examination procedure is prescribed elsewhere. Where a specification or other reference is
used with an examination symbol, the reference shall be placed in the tail (see
Figure 13.10).
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AS 1101.3—2005
FIGURE 13.10 USE OF REFERENCES
13.3 METHODS
EXAMINATION
OF
SPECIFYING
EXTENT
OF
NON-DESTRUCTIVE
13.3.1 Specifying length of section to be examined
13.3.1.1 Length shown
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To specify examinations of welds on parts where only the length of a section need be
considered, the length shall be shown to the right of the basic examination symbol (see
Figure 13.11).
FIGURE 13.11 SHOWING LENGTH OF SECTION TO BE EXAMINED
13.3.1.2 Location shown
To show the exact location of a section to be examined as well as its length, dimension lines
shall be used (see Figure 13.12).
FIGURE 13.12 SHOWING LOCATION OF SECTION TO BE EXAMINED
13.3.1.3 Examination of full length
Where the full length of a part is to be examined, no length dimension need be shown on
the examination symbol.
13.3.1.4 Partial examination
Where less than the total length of a weld is to be examined with locations to be selected by
a specified procedure, the percentage of the length to be examined shall be indicated (see
Figure 13.13).
FIGURE 13.13 PARTIAL EXAMINATION
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13.3.2 Specifying number of examinations
To specify a number of examinations to be taken on a joint or part at random locations, the
number of desired examinations shall be shown in parentheses (see Figure 13.14).
FIGURE 13.14 SHOWING NUMBER OF EXAMINATION
13.3.3 Specifying examinations made all around a joint
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To specify examinations to be made all around a joint, the examine-all-around symbol shall
be used (see Figure 13.15).
FIGURE 13.15 EXAMINE-ALL-AROUND
13.3.4 Specifying examination of parts (areas)
Non-destructive examination of parts (areas) shall be indicated by one of the following
methods:
(a)
Plane areas For non-destructive examination of an area represented as a plane on
the drawing, the area to be examined shall be enclosed by straight broken lines having
a circle at each change of direction. The examination symbol specifying the kind of
non-destructive examination shall be used in connection with these lines as shown in
Figure 13.16. Where necessary, these enclosures shall be located by coordinate
dimensions.
FIGURE 13.16 PLANE AREAS
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(b)
AS 1101.3—2005
Areas of revolution For non-destructive examination of areas of revolution, the area
shall be indicated by using the examine-all-around symbol and appropriate
dimensions. On Figure 13.17(a), the upper symbol indicates that the bore of the
flange is to be subjected to a magnetic particle examination for a distance of 80 mm
from the face, all the way around. The lower symbol indicates an area of revolution to
be subjected to radiographic examination where dimensions are not available on
drawing.
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The symbols in Figure 13.17(b) indicate an area of revolution subject to an internal
proof test and an external eddy current examination. Since no dimensions are given,
the entire length is to be examined.
FIGURE 13.17 AREAS OF REVOLUTION
13.3.5 Acoustic emission
Acoustic emission is generally applied to all or a large portion of a component, such as a
pressure vessel or pipe. The symbol indicates application of AEE to the component without
specific reference to location of sensors (see Figure 13.18).
FIGURE 13.18 ACOUSTIC EMISSION
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AS 1101.3—2005
106
APPENDIX A
ABBREVIATIONS OF TERMS FOR WELDING AND ALLIED PROCESSES
(Informative)
TABLE A1
DESIGNATION OF WELDING AND
ALLIED PROCESSES BY LETTERS
Welding and allied process
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Arc welding
Letter designation
AW
carbon-arc welding
CAW
electrogas welding
EGW
flux cored arc welding
FCAW
gas metal arc welding
GMAW
gas tungsten arc welding
GTAW
manual metal arc welding
MMAW
plasma arc welding
PAW
stud welding
SW
submerged arc welding
SAW
Brazing
B
dip brazing
DB
flame brazing
FLB
furnace brazing
FB
induction brazing
IB
resistance brazing
RB
silver brazing
SB
Other welding processes
electron-beam welding
EBW
electroslag welding
ESW
induction welding
IW
laser-beam welding
LBW
thermit welding
TW
oxy-acetylene welding
OAW
Resistance welding
RW
high frequency resistance welding
HFRW
percussion welding
PEW
projection welding
RPW
resistance seam welding
RSEW
resistance spot welding
RSW
(continued)
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AS 1101.3—2005
TABLE A1 (continued)
Welding and allied process
Soldering
DS
furnace soldering
FS
induction soldering
IS
iron soldering
INS
resistance soldering
RS
SSW
diffusion welding
DFW
explosion welding
EXW
forge welding
FOW
friction welding
FRW
hot pressure welding
HPW
roll welding
ROW
ultrasonic welding
USW
Thermal cutting
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S
dip soldering
Solid state welding
TC
air arc gouging
AAG
arc cutting
AC
carbon-arc cutting
CAC
flame gouging
FG
gas metal arc cutting
GMAC
metal-arc cutting
MAC
plasma arc cutting
PAC
electron-beam cutting
EBC
laser-beam cutting
LBC
oxy-fuel gas cutting
OFC
oxygen-arc cutting
AOC
Thermal spraying
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Letter designation
THSP
flame spraying
FLSP
plasma spraying
PSP
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AS 1101.3—2005
108
TABLE A2
ALPHABETICAL CROSS-REFERENCE TO TABLE A1
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Letter designation
Welding and allied processes
AAG
air arc gouging
AC
arc cutting
AOC
oxygen-arc cutting
AW
arc welding
B
brazing
CAC
carbon-arc cutting
CAW
carbon-arc welding
DB
dip brazing
DFW
diffusion welding
DS
dip soldering
EBC
electron-beam cutting
EBW
electron-beam welding
EGW
electrogas welding
ESW
electroslag welding
EXW
explosion welding
FB
furnace brazing
FG
flame gouging
FCAW
flux cored arc welding
FLB
flame brazing
FLSP
flame spraying
FOW
forge welding
FRW
friction welding
FS
furnace soldering
GMAC
gas metal arc cutting
GMAW
gas metal arc welding
GTAW
gas tungsten arc welding
HFRW
high frequency resistance welding
HPW
hot pressure welding
IB
induction brazing
INS
iron soldering
IS
induction soldering
IW
induction welding
LBC
laser-beam cutting
LBW
laser-beam welding
MAC
metal-arc welding
MMAW
manual metal arc welding
OAW
oxy-acetylene welding
OFC
oxy-fuel gas cutting
PAC
plasma arc cutting
PAW
plasma arc welding
(continued)
 Standards Australia
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AS 1101.3—2005
TABLE A2 (continued)
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Letter designation
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Welding and allied processes
PEW
percussion welding
PSP
plasma spraying
RB
resistance brazing
RPW
projection welding
RS
resistance soldering
RSEW
resistance seam welding
RSW
resistance spot welding
ROW
roll welding
RW
resistance welding
S
soldering
SAW
submerged arc welding
SB
silver brazing
SSW
solid state welding
SW
stud welding
TC
thermal cutting
THSP
thermal spraying
TW
thermit welding
USW
ultrasonic welding
 Standards Australia
AS 1101.3—2005
110
APPENDIX B
DESIGN OF STANDARD SYMBOLS
(Normative)
NOTES TO FIGURES B1 TO B22:
All dimensions in millimetres.
2
Unless otherwise specified, tolerance shall be ±1 mm or ±1°, as applicable.
3
All radii are minimum.
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NOTES
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NOTES
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