AWS B2.1

Date 12-20-2010 15:41

We have a client that needs to qualify a weld o let to a 4" sch. 10 pipe using an automatic GMAW machine. This appears to be a partial penetration weld but we can not do tensile and bends. We can etch and break them. Any ideas?

By fschweighardt (***)

Date 12-20-2010 21:06

If you are doing the O-let for fluids under pressure, you need to be in ASME IX.

By js55

Date 12-20-2010 21:13

Make sure you are actually talking about automatic and not machine welding.

By MBSims

Date 12-21-2010 00:05

Weldolets are designed as complete joint penetration welds. They are fit up and tack welded with a root opening of app. 3/32" for an open root weld.

Not sure how AWS B2.1 treats the qualification test for complete joint penetration groove welds, but for ASME IX a groove weld procedure qualification using GMAW on plate or pipe with tensile and bend specimens is required.