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B51-14 (R2019) – Boiler, pressure vessel, and pressure piping code

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MSS SP-137-2025

MSS SP-137-2025, 1st Edition: Quality Standard for Positive Material Identification of Metal Valves, Flanges, Fittings, and Other Piping Components

CDN $229.00

This publication was last reviewed and confirmed in 2025.

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

SKU: 26f54784779e Category:

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.

Edition

1

Published Date

2025-10-12

Status

Current

Pages

18

Language Detail Icon

English

Format Secure Icon

Secure PDF

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.

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