engr2GW
Petroleum
- Nov 7, 2010
- 308
Hi,
Mating flanges (weldnecks) are usually purchased to bolt to the last API 6A flange in a wellhead, and the mating flange is then welded to an ANSI line pipe for production (e.g. A 106 Gr B).
Two questons please:
1. where can I find heat treating and PWHT recommendations for API flanges for wellhead application (Both sour and general services)
2. Where can I find a listing of material types for API wellhead materials (flanges/weld necks) that contains their P-Nos, and Group No-s so that I can match them to already existing procedures.
Reason why I'm asking is that I have WPSes qualified for P-1 to P-1 materials, with TIG root and 7018 fill and cap, and MIG root with 7018 fill and cap. pre-heat min 125 to 175F. I was wondering if some of these WPS can apply to welding some API flanges that has yield of 45ksi and tensile 70ksi or less (e.g. API 5000 flange)
Thank you.
Mating flanges (weldnecks) are usually purchased to bolt to the last API 6A flange in a wellhead, and the mating flange is then welded to an ANSI line pipe for production (e.g. A 106 Gr B).
Two questons please:
1. where can I find heat treating and PWHT recommendations for API flanges for wellhead application (Both sour and general services)
2. Where can I find a listing of material types for API wellhead materials (flanges/weld necks) that contains their P-Nos, and Group No-s so that I can match them to already existing procedures.
Reason why I'm asking is that I have WPSes qualified for P-1 to P-1 materials, with TIG root and 7018 fill and cap, and MIG root with 7018 fill and cap. pre-heat min 125 to 175F. I was wondering if some of these WPS can apply to welding some API flanges that has yield of 45ksi and tensile 70ksi or less (e.g. API 5000 flange)
Thank you.
