Tag: sp-6-2021

The Manufacturers Standardization Society (MSS) of the Valve and Fittings Industry announces that the seminal SP-6-2021, Standard Finishes for Contact Faces of Pipe Flanges and Connecting-End Flanges of Valves and Fittings, has been revised and published by MSS.For over 91 years, Standard Practice (SP)-6 for standard contact face finishes has served as an industry norm and is referenced in many other technical documents.