
MSS SP-137-2020
MSS SP-137-2020, 1st Edition: Quality Standard for Positive Material Identification of Metal Valves, Flanges, Fittings, and Other Piping Components (Previous Edition)
CDN $178.00
Quality Standard for Positive Material Identification of Metal Valves, Flanges, Fittings, and Other Piping Components
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.
** No Longer current, replaced with newer version in October 2025 ** Please see newer version
** This version of the Standard is not current. Please check for Errata and Addendums **
Edition
1
Published Date
2025-08-11
Status
Previous Edition
Pages
14
Format 
Secure PDF
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Abstract
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.
** No Longer current, replaced with newer version in October 2025 ** Please see newer version
** This version of the Standard is not current. Please check for Errata and Addendums **
Previous Editions
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