shafi1
Mechanical
- Dec 22, 2006
- 7
Gents,
Can someone spare their precious time in answering my below question please ?
Well, we are constructing a 10" Water Pipeline using API-1104 as acceptance criteria. We are applying a dolly-mix procedure (Root-uphill with E7010 electrodes and rest downhill with E7010 electrodes). Pipe W.T is 9.27mm. This dolly-mix procedure is due to the pipe ovality problems to avoid the lack of root fusion and root undercut defects.
While interpreting films, we have found an hollow bead defect in the root pass. our client is telling that hollow bead will not occur when applying uphill root progression welding.
Can someone explain this statement is correct or incorrect with reasons please.
Thanks in advance.
Can someone spare their precious time in answering my below question please ?
Well, we are constructing a 10" Water Pipeline using API-1104 as acceptance criteria. We are applying a dolly-mix procedure (Root-uphill with E7010 electrodes and rest downhill with E7010 electrodes). Pipe W.T is 9.27mm. This dolly-mix procedure is due to the pipe ovality problems to avoid the lack of root fusion and root undercut defects.
While interpreting films, we have found an hollow bead defect in the root pass. our client is telling that hollow bead will not occur when applying uphill root progression welding.
Can someone explain this statement is correct or incorrect with reasons please.
Thanks in advance.