Historical
MSS SP-79-2004
Socket Welding Reducer Inserts
This Standard Practice covers ratings, dimensions, tolerances, finish, marking and material requirements for socket welding reducer inserts for use with ASME B 16.1 1, Class 3000 and 6000 socket welding fittings.
Manufacturers Standardization Society of the Valve and Fittings Industry, Inc. [mss]