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Manufacturers Standardization Society

MSS is the only organization in the world dedicated exclusively to the technical needs of the valve and fittings industry. Standards and codes are written and revised by 25 technical committees and address topics such as valves, valve actuators, pipe fittings, flanges, and pipe hangers.

Most Popular Titles From MSS:

MSS SP-58-2002 Pipe Hangers and Supports - Materials, Design and Manufacture
MSS SP-25-1998 Standard Marking System for Valves, Fittings, Flanges and Unions
MSS SP-55-2006 Quality Standard for Steel Castings for Valves, Flanges and Fittings and Other Piping Components - Visual Method for Evaluation of Surface Irregularities
ANSI/MSS SP-69-2003 Pipe Hangers and Supports - Selection and Application
MSS SP-75-2004 Specification for High Test Wrought Butt Welding Fittings
MSS SP-44-2006 Steel Pipeline Flanges
MSS SP-61-2003 Pressure Testing of Steel Valves
MSS SP-97-2006 Integrally Reinforced Forged Branch Outlet Fittings - Socket Welding, Threaded and Buttwelding Ends
MSS SP-89-2003 Pipe Hangers and Supports - Fabrication and Installation Practices
MSS SP-53-1999 (R2007) Quality Standard for Steel Castings and Forgings for Valves, Flanges and Fittings and Other Piping Components-Magnetic Particle Exam Method

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