Quote:
Originally Posted by Iron Chef
Being a weld newb, can a weld look good but still be a shitty weld ie poor penetration?
What am I looking at that makes it weldporn?
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100% Yes. Poor Root penetration is a big problem with guys who focus too hard on making their welds pretty rather than making the correct passes.
But there are many people who can make it work.
In general though, real welds I see on industrial pipe systems by guys who spend 12 hours a day welding, they don't give a fuck on how their cap pass looks, its simply of no consequence. As long as it doesn't have porosity, and ideally they won't have to grind it down too much if at all to get their cap height correct.
The biggest thing in piping for sure, is to make sure that you have full penetration and that the penetration does not impede the material in the pipe. Spec for penetration is that the height inside is uniform, and that the total inside height is not bigger than 3mm.
BIggest thing though which most people are so dumb about, stray arcs. If your stinger catches a piece of pipe, and I see it, you are cutting that piece of pipe out and starting new. ASME B31.3 has absolutely ZERO tolerance for stray arcs, doesn't matter what material, or procedure you are welding too, doesn't matter if its PWP7, PWP10, or even just a plain jane CWB structural weld. You better hope I can't find a stray arc.