WELDING SYMBOLS reference
welding qa/qc & Project Controls Software
ELEMENTS OF A WELDING SYMBOL
A Groove Angle
(E) Groove weld size
F Finishing
L Length of weld
P Pitch of weld (center TO cENTER)
R Root Opening
S Size or depth of bevel
T Tail: with or withouT Note
F
A
R
ContOUr
Tail
T
Field Weld
S (E) { Other side } L-P
Reference Line
{ Arrow Side }
All-Around
Arrow
GROOVE WELD SYMBOLS
v
square
u
j
flare-v
flare bevel
scarf
slot
back or backing
SURFACING
EDGE
STUD
spot
melt through
consumable
insert
Backing &
Spacer
flat
contour
convex
contour
concave
CONTOUR
bevel
square
u
j
flare-v
flare bevel
bevel
BASIC WELD SYMBOLS
plug
fillet
SUPPLEMENTARY WELD SYMBOLS
all around
field weld
APPLICATION OF S, (E), A, & R
WELD SYMBOL
DIMENSIONs
S
DEPTH OF BEVEL
(E)
GROOVE WELD SIZE
A
v
1⁄2
5⁄8
(3⁄8)
¹⁄4
0
(1⁄4)
(3⁄8)
60°
45°
¹⁄16
¹⁄8
¹⁄8
(3⁄16)
0°
5⁄8
(¹⁄4)
5⁄16
(3⁄8)
(1⁄4)
20°
25°
60°
30°
¹⁄32
¹⁄8
1⁄16
1⁄16
GROOVE ANGLE
R
ROOT OPENING
3⁄32
*FOR REFERENCE ONLY; SEE CURRENT AWS A2.4 FOR OFFICIAL INFORMATION
WELDING SYMBOLS reference
welding qa/qc & Project Controls Software
Application of Arrow side & Other side
Arrow side
Other side
Both sides
Single V
Single V
Double V
Single bevel
Single bevel
Double bevel
Placement of Dimensions
Size - “S”
Length & Pitch - “L-P”
1⁄4
3⁄16
All-Around
2-4
2-4
3⁄8
5⁄16
4
3⁄8”
3⁄16”
5⁄16”
1⁄4”
2
2