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  1. PipeLayer15

    Welding Root Pass VT NDE of Value?

    I am working for a mechanical contractor that is constructing B31.1 power piping. Butt welds, max 16" sch40 pipe (majority <8"), design P/T of 232psig @ 250'F. Owner's specification is asking for 20% VT examination of all root passes and 100% RT examination of all completed welds. What is the...

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