Machinery's Handbook, 31st Edition
Welding Symbols
1623
Application of American National Standard Welding Symbols Desired Weld Symbol Symbol Meaning Application of American National Standard Welding Symbols (Continued)
Groove Weld Made Before Welding Other Side
Symbol indicates single-pass back weld.
Back Weld
2
3 2 1 / 8
1 / 8
3
2
2
Symbol indicates a built-up surface 1 ∕ 8 inch thick.
Symbol indicates a bead-type back weld on the other side of joint, and a J-groove grooved horizontal member (shown by break in arrow) and fillet weld on arrow side of the joint.
1 / 2
1 / 2
1 / 2
Symbol indicates two fillet welds, both with 1 ∕ 2 -inch leg dimensions.
1 / 2
1 / 4
Symbol indicates a 1 ∕
2 -inch fillet weld
1 / 2 1 / 4
on arrow side of the joint and a 1 ∕ 4 -inch fillet weld on far side of the joint.
1 / 2
(
)
1 / 4 1 / 2 ×
1 / 4
Symbol indicates a fillet weld on arrow side of joint with 1 ∕ 4 - and 1 ∕ 2 -inch legs. Orientation of legs must be shown on drawing.
1 / 2
Orientation Shown on Drawing
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