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  • Users: mechinspec
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  1. mechinspec

    Internal Grinding of avoid PWHT

    I have came across situation where there is Client approved WPS to weld 60" X 19.05 mm thick CS Pipe & Fitting for sea water service wihtout PWHT. But the Material received has thickness more then 20 mm some of them are upto 24 mm, as per ASME 31.3 Fig 328.4.3 (b) internal trimming is allowed to...
  2. mechinspec

    WPS with Impact & PWHT for non impact lines(non Sour service)

    Dear all, We have a Sec IX qualified WPS for Sour service with impact & PWHT, I wonder can we use the Same for line which is non Sour and dosent require PWHT(Thickness-19mm). Kindly clarify, Thanks & Regards MechInspec

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