Tubular Wrought Copper: Standard Specification for Seamless Copper Tube: ASTM B75 Alloy C12200
The industry standards are: ANSI (American National Standards Institute); ASME (The American Society of Mechanical Engineers); MSS (Manufacturers Standardization Society of the Valve and Fittings Industry Inc.); ASTM (American Society for Testing and Materials).
All Cello Products Inc. wrought copper fittings are NSF 61 registered.