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  • Users: Mustakim
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  1. Mustakim

    ASME B31.3 Impact testing for SS304 with MDMT of -165degC

    Hi Everyone, For our Cryo services, the MDMT is -165degC. Piping Specification used is SS 304/304L or SS 316/316L. The Table 323.2.2 A-4 NOTES (6), only allows exemption of impact testing of base metal if the MDMT is -104degC or warmer Extract below from B313.3 (ed2018) Notes6 (6) For...
  2. Mustakim

    ASME B31.3 - Longitudinal Seam weld

    Hi All expert, Would like to clarify if there are any provision within ASME B31.3 that allows welded pipe to have two longitudinal seam? We have ordered pipe base on ASTM A358 EFW TYP304 CLASS 1,30" NPS 1" thick. The manufacturer (from India) produces the pipe with 2 plates, resulting in 2...

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