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So as long as our Filler materials are the same throught the welding process of the P44 even though our P44 materials change we should be covered

When writing a WPS / PQR will the P-Number that is use for the WPS / PQR cover all groups and alloys under that P-Number or do we have to write seperate WPS /PQR's for each group and alloy. Ex. P44 covers Hastelloy B2, C22, C276. Can we write P44 To P44 and cover all these alloys.

I just recieved a WPS / PQR for welding a 3'' SCH 160 and now my customer has changed their order to 4'' SCH 160. The question I have is do I rev up my last WPS / PQR or do i just disregard the 3'' WPS and just use the 4'' WPS

Sorry i should have been more specific. Is there a code or any reference to any code that state we must use this gap spacing for this size pipe useing STAW.

Is there any where in any Procedure that states you have to use a certain gap spacing/ root spacing per pipe schedule. Ex if I have a 3'' s40 pipe what tells me that I should gap space it at 1\16'' or can I just space it at what I fell confrontable in doing.

I have a problem can anyone explain to me if there is a such thing as Inconel 825 or is it call alloy 825. also what P-number does this material fall under and what filler metal do i use. Thanks,

Is it possible to weld P44/ C-276 to P10H/ 2205. If so what is the filler that is need.

Metengr, I'm new to the forum. So I didn't know if they were separated or all joined together. So I posted it in multiple areas, because I wasn't sure which one to post it in.

Thank you so much. That's great to here.

I need some help. My company wrote a WPS /PQR and preformed the coupons to be tested and they all have passed. but the issue I'm having is the thickness range was wrote wrong on the WPS and the PQR. The welder performed the coupon with a 2" S40 and the range thickness says .088 - .216. My...

I need some help. My company wrote a WPS /PQR and preformed the coupons to be tested and they all have passed. but the issue I'm having is the thickness range was wrote wrong on the WPS and the PQR. The welder performed the coupon with a 2" S40 and the range thickness says .088 - .216. My...

I need some help. My company wrote a WPS /PQR and preformed the coupons to be tested and they all have passed. but the issue I'm having is the thickness range was wrote wrong on the WPS and the PQR. The welder performed the coupon with a 2" S40 and the range thickness says .088 - .216. My...

Ok... I just read QW-420. So if I'm reading this correctly. I can have a test coupon that is weld with P-No 44 to P-No 44, and that will qualify that welder for P-No 34, P-No 41 Thur P-No 47. because they are all in the same Group No. Even though the P-No changes.

I need to certify some welders in all nickel base materials. (ex. P41 thur P47). The question I have is there one certain Nickel Base material I can have them do a weld coupon for that will certify them in all Nickel Base material, or do I need to have them do a weld coupon pre material.

I need to certify some welders in all nickel base materials. (ex. P41 thur P47). The question I have is there one certain Nickel Base material I can have them do a weld coupon for that will certify them in all Nikel Base material, or do I need to have them do a weld coupon pre material.