API 5l Grade X70 56" longitudnal seam Pipe ruptured along the seam
API 5l Grade X70 56" longitudnal seam Pipe ruptured along the seam
(OP)
Dear All,
I have encountered an issue during production, one of the pipes rupture after hydrotest beside the longitudinal seam
Pipes were made of API 5L Grade X70 and contains longitudinal seam weld. It seems that ruptured occurred from an area beside the weld you can also say at HAZ from the ID side of the pipe. Did you guys have encountered any problems like this.
hydrogen cracking may have been the cause of this rupture which usually develops in HAZ area in SAW pipes.
Any help in finding the cause will be appreciated.
I have encountered an issue during production, one of the pipes rupture after hydrotest beside the longitudinal seam
Pipes were made of API 5L Grade X70 and contains longitudinal seam weld. It seems that ruptured occurred from an area beside the weld you can also say at HAZ from the ID side of the pipe. Did you guys have encountered any problems like this.
hydrogen cracking may have been the cause of this rupture which usually develops in HAZ area in SAW pipes.
Any help in finding the cause will be appreciated.





RE: API 5l Grade X70 56" longitudnal seam Pipe ruptured along the seam
Why, there are about a dozen possible reasons.
I won't speculate from here.
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P.E. Metallurgy, Plymouth Tube
RE: API 5l Grade X70 56" longitudnal seam Pipe ruptured along the seam
RE: API 5l Grade X70 56" longitudnal seam Pipe ruptured along the seam
RE: API 5l Grade X70 56" longitudnal seam Pipe ruptured along the seam
Did temperature change or test fluid oscillate or hammer?