Robuta

https://store.astm.org/workitem-wk97080 WK97080 Revision of B640-12a(2021) Standard Specification for Welded Copper Tube for Air... https://www.astm.org/membership-participation/technical-committees/workitems/workitem-wk97080 WK97080 - Revision of B640-12a(2021) Standard Specification for Welded Copper Tube for Air... ASTM International - Standards Worldwide