Pipe Distorted During Welding - How to Repair / Inspect?
Pipe Distorted During Welding - How to Repair / Inspect?
(OP)
I have a 3" line that had some welding done on it, but now it appears that the piping had warped due to the welding such that the connecting joint centerline(s) are off about 1" from eachother, I believe to the side and a little bit to an angle.
What specifications or procedures are out there that can help provide methods for which to correct this to bring it back to where we want it to be?
3" Carbon Steel, A106-B or API 5L-B I believe.
Any help would be appreciated.
What specifications or procedures are out there that can help provide methods for which to correct this to bring it back to where we want it to be?
3" Carbon Steel, A106-B or API 5L-B I believe.
Any help would be appreciated.





RE: Pipe Distorted During Welding - How to Repair / Inspect?
"People will work for you with blood and sweat and tears if they work for what they believe in......" - Simon Sinek
RE: Pipe Distorted During Welding - How to Repair / Inspect?
RE: Pipe Distorted During Welding - How to Repair / Inspect?
"Simple distortion" of the 3 inch line is unlikely to "move" the pipe that far from where it was welded, BUT (big but there!) a long 3 inch dia pipe stub welded at one end "might" see that 3 inch (small bore) pipe droop or move (if unsupported) at the far end (the open end) of the pipe.
As above, your fitter should know the movement of pipe ends from heat at the base point, and should have compensated for it. He (she ?) should also know the flexibility of pipe during assembly and should support both ends of his pipe during fabrication and cutting.
do NOT under ANY circumstances allow the pipe to be "kinked" if straightening is attempted.
RE: Pipe Distorted During Welding - How to Repair / Inspect?
"People will work for you with blood and sweat and tears if they work for what they believe in......" - Simon Sinek
RE: Pipe Distorted During Welding - How to Repair / Inspect?
RE: Pipe Distorted During Welding - How to Repair / Inspect?
"People will work for you with blood and sweat and tears if they work for what they believe in......" - Simon Sinek
RE: Pipe Distorted During Welding - How to Repair / Inspect?
Although it may not be applicable 1-to-1 to new equipment [PCC-2 is for equipment after it's been place in service - I cant judge if your equipment is new or has been in service], some (major oil&gas) companies refer to it for e.g. pipe straightening, bending, weld defect repair, etc, also for new equipment. It contains some valuable info and techniques.
Now, given the quality aspect of the problem you're stating, I'd leave the solutions up to the experts, as posted above