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  • Users: jinlongman
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  1. jinlongman

    Qualification of welders

    Dear All, I have question. Qualification of welders according to ASME IX Code QW-301.2. We want to qualify welders to a valid WPS, PQR with PWHT. Now the person who supervise welding of test coupons does he himself have to be certificated ASME code welder or can be welding instructor with...
  2. jinlongman

    Surface corrosion protection

    Dear All, Can somebody tell me what coal oil leakage test is and what is its purpose? Thank you.
  3. jinlongman

    WPQ

    Hi guys, I need to know following: ASME IX WPQ Welder was qualified on a single coupon plate in 2G and 3G. Plate thickness was 40mm and material was P1. QW-403.27 says Max. T that welder can weld is that of the weld coupon. Does that mean that in 2G Max. T is 20mm and 3G is also 20mm or...

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