Sep 12, 2011 #1 david339933 Industrial Jun 15, 2011 1,204 Am I correct in the interpretation that a shell thickness of 1 3/8" does not need PWHT if pre-heat is applied over 200 deg F?
Am I correct in the interpretation that a shell thickness of 1 3/8" does not need PWHT if pre-heat is applied over 200 deg F?
Sep 12, 2011 #2 stanweld Materials May 9, 2003 2,906 Yes, provided the material is in P No. 1. Upvote 0 Downvote
Sep 12, 2011 #3 fegenbush Mechanical Apr 5, 2006 783 That would depend on the material. For a P-Number 1 materials, you are correct. Ensure that your weld map and traveller have a section to record that the pre-heat was applied to prove this to the AI. Upvote 0 Downvote
That would depend on the material. For a P-Number 1 materials, you are correct. Ensure that your weld map and traveller have a section to record that the pre-heat was applied to prove this to the AI.
