pipe to flange weld procedures.
pipe to flange weld procedures.
(OP)
I'm drawing up a list of material quantities for qualifying pipe weld procedures. Materials are carbon steel, low temp carbon steel, stainless steels -304, 316L, 321 - Chrome Moly. Some of these materials are of heavy wall thickness
On a previous project, I remember that we qualified weld procedures in pipe to flange and pipe to nozzles, if I recall it was on the low temp carbon steel, A 333 to LF350.
Can anyone advise where in ASME (B31.3, ASME IX) it is specified that pipe to flange weld procedure qualification is required and as to why it is needed?
On a previous project, I remember that we qualified weld procedures in pipe to flange and pipe to nozzles, if I recall it was on the low temp carbon steel, A 333 to LF350.
Can anyone advise where in ASME (B31.3, ASME IX) it is specified that pipe to flange weld procedure qualification is required and as to why it is needed?





RE: pipe to flange weld procedures.
The requirement for qualification of weld procedures is in the code of construction specified for fabrication. For pipe used in various service conditions, the Power Piping Codes like ASME B31.x would be used as the code of construction, and as such, weld procedures for pipe fabrication would fall under ASME B&PV Code, Section IX for qualification. Section IX only provides guidance for weld procedure and welder qualification, nothing more.
For flanges, ASME B16.x standards would apply, and once again welding would fall under the requirements of ASME B&PV Code, Section IX for qualification.
RE: pipe to flange weld procedures.
Steve Jones
Materials & Corrosion Engineer
http://www.pdo.co.om/pdoweb/
RE: pipe to flange weld procedures.
B31.3 does contain requirements for welding pipe to flanges, reinforcement requirements, design for loading and welding pipe to nozzles.
RE: pipe to flange weld procedures.
Steve Jones
Materials & Corrosion Engineer
http://www.pdo.co.om/pdoweb/
RE: pipe to flange weld procedures.
RE: pipe to flange weld procedures.
Steve Jones
Materials & Corrosion Engineer
http://www.pdo.co.om/pdoweb/
RE: pipe to flange weld procedures.
Steve Jones
Materials & Corrosion Engineer
http://www.pdo.co.om/pdoweb/