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Following are the combination of materials for weldments API 5L Gr. X65 PSL2 to A860 Gr. WPHY65 A694 Gr. F65 to A860 Gr. WPHY65 A694 Gr. F65 to API 5L Gr. X65 PSL2 AISI 8630 -0065S to API 5L Gr. X65 PSL2 Super Duplex 2507 to Super Duplex 2507 All butt-welds. Regards, PK

The welding in question is for subsea manifold piping designed in accordance with API-6A, ASME B 31.3 section K & NEN-3650 (Netherlands Pipe line spec). As far as I can see, NEN-3650 Annex D does not refer to any of this issue. Regards, PK

I can only wish that the rules/codes are more detailed & specific.... there is always room to debate & thats why we are here. To cover my rear from all angles, having the contractor qualify PQR/WPS, basing our WPS/PQR as reference looks like a safe option. Thankyou guys for all your valuable...

DVWE, I understand your point. Will a new PQR by the contractor suffice the requirement? Thrid party is also involved for witnessing the production welds & the NDEs Both Company A & the contractor are in compliance with ISO 9001:2000. I am not a welding engineer or a metallurgist, just trying...

Hi guys, I work for company 'A', and I have seleted our own (company 'A') WPS for our project. Due to time constraints we had to subcontract the production welding to a contractor. Is it acceptable (per AMSE &/or AWS) to hire a contractor, qualify their welder to company 'A' WPS & use company...

What kind of weld would be a better option, a butt weld or a socket weld on an 1 13/16" -10,000 psi API flange (super duplex UNS S32750) to a 1" ID tube, 0.118" tk strangely thin!!!(super duplex UNS S32750) which is also rated to 10,000 psi. The assembly has to be rated to 10,000 psi Thank you...