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  1. S

    Piping wall thickness calculation during hydrotest condition

    Hi，Forums Piping wall thickness calculation according ASME B31.3 is using the design pressure of pipeline，while the hydrotest pressure is at least 1.5×design pressure. The question is why B31.3 doesn't require to do the calculation check under hydrostatic test pressure？
  2. S

    Module and skid technical manager work study

    What is the work scope of technical manager? Take in charge all designers, arrange design works, or review plan & DOCs? Are there corresponding study courses or books? Thanks Sean
  3. S

    API 6A standard 10000psi ball valve material selection

    Can ASTM A-182 F316/316L material be used for ball valve body which follows API 6A standard and 10,000psi rating ? API 6A table-7 shows body material designations for pressure rating 69.0MPa(10,000psi) is 36K,60K,75K,NS while the yield strength of ASTM A-182 F316/316L is 205 MPa(30K). So this...

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