Quote:
Originally Posted by Synapse Motorsport
-Completely backpurged including runners for complete weld penetration
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This:

.........is not "complete weld penetration", penetration but far from complete/full.(taken right from your pictures).....underfill usually results with this....
Underfill:
This is complete penetration:
Might want to reword your description, or tell your welder to slow down on the feed a bit and/or prep the joints better. Not intentionally picking your work apart, but best not to claim something that isn't there
just my AWS .02