Field weld symbol
Also called Site weld, Field weld flag
A flag at the junction of the arrow and the reference line means the weld is made in the field, on site or at installation, not in the shop.
What the field weld symbol means
A flag at the junction of the arrow and the reference line means the weld is made in the field, on site or at installation, not in the shop.
AWS A2.4 and ISO symbols
Where you see it
Erection welds on structures, field joints on pipelines and piping, and module tie-ins.
How it is inspected
Inspection of a field weld usually covers the same visual and NDT checks as a shop weld, recorded separately because the weld is made and inspected on site. 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 field weld symbol look like?
On AWS A2.4 drawings: A flag at the junction, pointing towards the tail. In ISO 2553: The same flag at the junction.
Is the field weld symbol the same in ISO and AWS?
No. The same flag at the junction.
Where is a field weld used?
Erection welds on structures, field joints on pipelines and piping, and module tie-ins.
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