Originally posted by Stazi: I see no porosity or slag in the weld beads so it seams that the penetration was good.
If the MSDS headers are TIG'd, are you sure they capped the headers and filled them with the welding gas also? That's the only way to promote good internal penetration, and I highly doubt they did that.
The weld on the W-R's look fine. And being somewhat of a welding buff from my days or working in the mines, I can say that they would pass any piping standards.
MSDS are wire welded also. I have no idea if Marty back purges them, but I know they are welded rather solid form the bead size. Visual inspection is one thing but actual break testing, porsity etc testing I dunnno. If they had porsity problems with those weapon R headers then they are defianately using either 409 or a very low low grade SS. ON the inside of the pipes how do the welds look? If they where back purged they should look like a perfectly smooth bead. At least thats what I see everytime someone does that kind of welding.
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