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Nadeem.Ahmed
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Join Date: Jul 2011
Posts: 2

Can We Use LTCS (P1 Through P11 Materials) Welders for SS (P8 Materials)?

07/29/2011 9:19 AM

Dear sir,

A welder qualified in LTCS(P1 through P11) for the following parameters;

Pipe Diameter range :1'' and above & thickness is 10.8mm Maximum

Position : All for GTAW Process and for F number is 6 & A number is 8.

Can we use this welder for SS welding of A312 TP304L pipes for F6 & A number 8 & the Pipe diameter is 1'' above for the wall thickness 7.11 mm.

Position: All for GTAW Process.

Waiting for your reply.
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Tornado
Guru
Technical Fields - Technical Writing - New Member Engineering Fields - Piping Design Engineering - New Member

Join Date: May 2009
Location: Richland, WA, USA
Posts: 21017
Good Answers: 795
#1

Re: Can we use LTCS(P1 though P11 materials) welders for SS(P8 materials)?

07/31/2011 2:16 AM

This may depend on local welding qualification requirements. My experience is limited, but from what I have seen, separate P groups need to have separate qualification tests. However, if your process is GTAW in all cases, then conceivably your local standards would allow for qualification in some P groups to be accepted for other P groups. I apologize that this is only a speculative answer. Please review the regulations in your jurisdiction.

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