ASME IX QW-423.1 QUESTION
ASME IX QW-423.1 QUESTION
(OP)
Hello,
what is the range of approval for a welder he tested in pipe with P-No. 1 to 1??
I think interpreting ASME IX, QW-423.1 following:
1 through 11, 34, 41 through 49.
Is that correct???
Can he welds, for example, P47?
Thank you
what is the range of approval for a welder he tested in pipe with P-No. 1 to 1??
I think interpreting ASME IX, QW-423.1 following:
1 through 11, 34, 41 through 49.
Is that correct???
Can he welds, for example, P47?
Thank you





RE: ASME IX QW-423.1 QUESTION
Yes, and Yes.
RE: ASME IX QW-423.1 QUESTION
But, is that reason? I mean, is it the same difficulty, if a welder weld carbon steel and stainless steel?
distinction elsewhere in the asme code?
Thank you again
RE: ASME IX QW-423.1 QUESTION
Keep in mind this is only one variable - base metals. Filler metals is another separate variable that must be considered.
A welder who qualified on carbon steel ( P1) using F6 would be qualified to weld stainless ( P8 with F6), but, also bear in mind that these are minimum Code requirements.
P4x would require separate qualification using F4x filler.
RE: ASME IX QW-423.1 QUESTION
Note that your welder is qualified for P-No. 1 through 15F, 34, and 41 through 49.
RE: ASME IX QW-423.1 QUESTION