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  • Users: studaddy
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  1. studaddy

    use of pqr without essential variable

    we have a pqr for stainless 308 l using the stt process with a backing gas [open butt pipe] the bosses son refuses to use the argon that was used to qualify and wants to use solar flux instead . my position is we have to qualify a new pqr and our welders since we are deleting an essential...

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