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Published on Jul 26, 2010
This is a 32" butt weld (it was 1 of 2). due to procedure restraints we had to do it full tig! its 40mm thick on a compound prep and it took 48 passes to stay inline with the procedure, it was preheated from the inside, took 24 hours to weld.
A lot of people have commented that there is underct present. Its not undercut its where the cone section has been sandblasted and the temper marks make it look like its undercut. Trust me i had hree sets of inspectors witnessing the testing and the completed welds and they would not let anything go. it was 100% xray as well. then it was tested to 720 bar! thats 10,440 psi in old money.