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I have read the spec,, API 1104, B31.4... got no reference... that's why i asked the professionals here....

hello my friend, Thanks for the reply, technical speaking you are correct BUT, BUT My query remains the same, any clause in API 1104 or B31.4 to support 12 hours, 24 hours or 48 hours delay for NDE?????

Hi professional, My query is how much delay we can give to perform NDE after welding a pipeline BUTT joint AS PER API 1104. Any exact reference will be very much helpful. Thanking in advance.

thank you very much. professionals

@ kingnero (Mechanical). machining before welding to reduce the thickness for qualification of WPS for low wall thickness. because material for low wall thickness is not available, so my quation is, is it allowed to machine down to low wall thickness for welding procedure qualification? thanks

Hi everyone, i put my case in front of welding professionals. suppose i have a pipe 6"x15.88, APIL 5L X60. i want welding procedure qualification for 6"x8mm. my question is, can i reduce the thickness of 6"x15.88 to 8mm by machining till up to HAZ or little more, just to qualify for 6"x8mm...

For new pipelines, it is always 1.25 X DP. thanks

Hi everyone, i put my case in front of welding professionals. suppose i have a pipe 6"x15.88, APIL 5L X60. i want welding procedure qualification for 6"x8mm. my question is, can i reduce the thickness of 6"x15.88 to 8mm by machining till up to HAZ or little more, just to qualify for 6"x8mm...