Revise marking requirements to enhance acceptance and use of the use of copper tubing with fitting joining methods that seal on the outside diameter and to allow the use of alternative methods for the application of permanent markings.
Keywordscopper tube; seamless; water tube; UNS No. C10200; UNS No. C12000; UNS No. C12200; Seamless Cu/Cu alloy tube--specifications; UNS C10200 (oxygen-free copper (OF)); UNS C12200--pipe/tube (seamless/welded); Water supply/distribution systems--specifications ; ICS Number Code 2200; 23.040.15 (Non-ferrous metal pipes)