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ANSI/MSS SP-25-2013

Standard Marking System for Valves, Fittings, Flanges, and Unions

This standard marking system applies to valves, fittings, flanges, and unions used in piping connections which include (but are not limited to) flanged, soldered, brazed, threaded, or welded joints.

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Content Provider
Manufacturers Standardization Society of the Valve and Fittings Industry, Inc. [mss]

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