P1 to P11 welding procedure

[novice123]

Please share with me the basic welding procedure to weld P1 to P11, including the recommended consumable, preheat and post heat requirements for 11 mm piping joint.

[ben]

Apply 149 C preheat
ER80S-D2
E7018-A2
Maintain 316 C interpass, max.
704-760 C post weld heat treatment following ASME B31.3 for t > 13 mm or material with TS > 71 ksi. Apply that for 1 hour per 25 mm thickness with minimum holding time of 2 hours.
Hardness should remain at 225 BHN.

[mechcolor]

Table A-1 of API 582 suggests the following:
Use E70XX-A1 or E70XXB2L or E80XXB2 low hydrogen.

Attached the reference here.

Table A-1 API 582j.jpg

Apply 149 C preheat
ER80S-D2
E7018-A2
Maintain 316 C interpass, max.
704-760 C post weld heat treatment following ASME B31.3 for t > 13 mm or material with TS > 71 ksi. Apply that for 1 hour per 25 mm thickness with minimum holding time of 2 hours.
Hardness should remain at 225 BHN.

[novice123]

Thanks, appreciate for the reference, mechcolor.