what is copper pipe fittings made of
SPECIFICATIONS. â¢ 1  Wrot Copper Fittings made from commercially pure copper mill products per ASTM Specifications B75 Alloy C12200. â¢ 2  Cast Copper Fittings made from Copper Alloy C84400 which consists of 81% copper, 7% lead, 3% tin, and 9% zinc per ASTM Specification B584.