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About This Item

 

Full Description

This Standard Practice provides methods and acceptance standards for Positive Material Identification (PMI) of metal flanges, fittings, valves, and pressure boundary parts of valves and other piping components.
 

Document History

  1. MSS SP-137-2020


    Quality Standard for Positive Material Identification of Metal Valves, Flanges, Fittings, and Other Piping Components

    • Most Recent
  2. MSS SP-137-2013


    Quality Standard for Positive Material Identification of Metal Valves, Flanges, Fittings, and Other Piping Components

    • Historical Version
  3. MSS SP-137-2007

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    Quality Standard for Positive Material Identification of Metal Valves, Flanges, Fittings, and Other Piping Components

    • Historical Version