Unsusual weld header configuration
Unsusual weld header configuration
(OP)
We have a number of high temperature headers made from 2.25Cr 1Mo steel. They are stubbed with similar material. The branch welds connecting the two use a matching consumable although recent material identification suggests that the final weld run (on the stub side, furthest from the header) appears to be undermatched (1Cr 0.5Mo type consumable).
I'm guessing this was a mistake during manufacture. Perhaps it was initially welded correctly, but then they realised they required an additional run to be put down for compensation purposes, but grabbed the wrong consumable.
Or is there a better reason for this? Anyone care to comment?
Thanks
I'm guessing this was a mistake during manufacture. Perhaps it was initially welded correctly, but then they realised they required an additional run to be put down for compensation purposes, but grabbed the wrong consumable.
Or is there a better reason for this? Anyone care to comment?
Thanks





RE: Unsusual weld header configuration
Long ago (drillings were taken for chem) a large number (25% +/-) of welds and base metals were incorrect in a new Cr:Mo unit (hydrogen),I guess things have not changed that much.
RE: Unsusual weld header configuration
RE: Unsusual weld header configuration
RE: Unsusual weld header configuration
RE: Unsusual weld header configuration