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

Standard [CURRENT]

MSS SP-137:2025

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

Publication date
2025
Original language
English
Pages
18

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Publication date
2025
Original language
English
Pages
18
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Short description

This Standard Practice provides methods and acceptance standards for Positive Material Identification (PMI) of metal flanges, fittings, valves, pressure boundary parts of valves, and other piping components. The instrumentation used for PMI testing covered by this Standard Practice shall be optical spectroscopy, X-ray fluorescence, or laser induced breakdown spectroscopy.

Content

ICS

23.040.01, 23.060.01
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