Most recent
MSS SP-75-2019
High-Strength, Wrought, Butt-Welding Fittings
This Standard Practice covers factory-made, seamless and electric welded carbon and low-alloy steel, butt-welding fittings for use in high pressure gas and oil transmission and distribution systems; including pipelines, compressor stations, metering and regulating stations, and mains.
Manufacturers Standardization Society of the Valve and Fittings Industry, Inc. [mss]