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porosity

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  • porosity

    Massive porosity on my starts. One mm bubble(or two) on surface, but nickle-size cluster underneath after grinding. Once every 4 rods. ESAB 5mm and 6mm, 7018.
    About 1000" of piping production so far. 16" sch60.
    Going to try Liquid Air. Don't know what else to do.
    Suggestions please. Using PipeWorx 400. Minimal hotstart setting but backstepping after a scratchstart.
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