11/12/2020
msshq.org
MSS announces the publication of revised Standard Practice, SP-137-2020, Quality Standard for Positive Material Identification of Metal Valves, Flanges, Fittings, and Other Piping Components! The revised SP-137 has served the industry for over 13 years; providing methods and acceptance standards for Positive Material Identification (PMI) of metal flanges, fittings, valves, pressure boundary parts of valves, and other piping components. This Standard Practice describes requirements for semi-quantitative analysis used for material grade identification only. Press Release:https://msshq.org/CMS/Content/Press/MSS-PR-20_SP-137-2020_Nov2020_Final.pdf (or see the MSS pubic home page).