Double-bevel groove weld symbol
Also called K weld, Double-bevel butt weld
A double-bevel groove weld bevels one member on both sides, giving a K shape. It is the usual full-penetration T joint on thick plate.
What the double-bevel groove weld symbol means
A double-bevel groove weld bevels one member on both sides, giving a K shape. It is the usual full-penetration T joint on thick plate.
AWS A2.4 and ISO symbols
Double-bevel butt weld (K weld). The same K, without the dashed line because the weld is symmetrical.
ISO SVGWhere you see it
Full-penetration T joints on thick plate, such as stiffeners, brackets and nodes.
What is written next to it
On the welding symbol, the double-bevel groove weld carries the groove depth on each side, the root opening and the bevel angles.
How it is inspected
Inspection of a double-bevel groove weld usually covers visual inspection and ultrasonic testing of the full-penetration joint. Each inspection is recorded against the weld, so the joint can be signed off with its evidence. See the ITR guide.
Related symbols
Frequently asked questions
What does the double-bevel groove weld symbol look like?
On AWS A2.4 drawings: A bevel above and below the reference line, making a K. In ISO 2553: The same K, without the dashed line because the weld is symmetrical.
Is the double-bevel groove weld symbol the same in ISO and AWS?
Yes, it is drawn the same way in most legends.
Where is a double-bevel groove weld used?
Full-penetration T joints on thick plate, such as stiffeners, brackets and nodes.
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