Errata for AWS A2.4-98, Standard Symbols for Welding, Brazing, and Nondestructive Examination.
The following is the corrected Welding Symbol Chart for AWS A2.4-98, pages 106 and 107.
Basic Welding Symbols and Their Location Significance
Location
Significance
Spot or
Projection
Plug
or Slot
Fillet
Stud
Back or
Backing
Seam
Edge
Surfacing
Arrow Side
Not
Used
Other Side
Not
Used
Both Sides
No Arrow Side
or Other Side
Significance
Not
Used
Not
Used
Not
Used
Not
Used
Not
Used
Not
Used
Not
Used
Not
Used
Not
Used
Not
Used
Not
Used
Not
Used
Square
V
Bevel
U
J
Flare-V
Flare-Bevel
Scart for
Brazed Joint
Not
Used
Not
Used
Not
Used
Not
Used
Not
Used
Not
Used
Not
Used
Groove
Location
Significance
Arrow Side
Other Side
Both Sides
No Arrow Side
or Other Side
Significance
Supplementary Symbols
Weld-All-Around
Field Weld
Location of Elements of a Welding Symbol
Melt-Thru
Consumable Insert
Groove Angle; included Angle
of Countersink for Plug Welds
Finishing Symbol
Root Opening; Depth
of Filling for Plug
and Slot Welds
Contour Symbol
(Square)
Groove Weld Size
Backing/Spacer (Rectangular)
Concave
Specification,
Process, or Other
Reference
Spacer
Basic Joints
Identification of Arrow Side and Other Side Joint
Butt Joint
T
Corner Joint
Tail (May
Be Omitted
When
Reference
is Not Used)
Arrow Side
of Joint
Arrow of
Welding
Symbol
Depth of Bevel;
Size or Strength
for Certain Welds
Arrow Side
of Joint
(N)
Other
Side
of Joint
Edge Joint
Lap Joint
T-Joint
Arrow of
Welding
Symbol
Arrow of
Welding
Symbol
Arrow Side of Joint
Other Side
Member
of Joint
Other Side
of Joint
Arrow of Welding Symbol
L-P
Field Weld
Symbol
Weld-AllAround
Symbol
Arrow
Connecting
Reference
Line to Arrow
Side Member
of Joint or
arrow Side
of Joint
Letter Designations
Arrow Side of Joint
Where letter designations are to
be included in the tall of the welding
symbol, reference is made to
Table 1. Latter Designations of
Welding and Allied Processes and
Their Variations, of AWS A2.4-98.
Arrow of
Welding
Symbol
Arrow Side
Member of
Joint
Pitch (Center-toCenter Spacing
of Weld Segments
Reference
Line
Number of Spot, Seam,
Stud, Plug, Slot,
or Projection Welds
Element in This Area
Remain As Shown When Tall
and Arrow are Reversed
Weld Symbols Shall be Contained
Within the Length of the Reference Line
Weld
Symbol
Other Side
of Joint
S(E)
F
___
A
R
ARROW OTHER
SIDE
SIDE
Convex
SIDES
Flush or Flat
BOTH
Backing
Length of Weld Segment
Contour
Other
Side
of Joint
American Welding Society
550 N.W. LeJeune Road
Miami, Florida 33126