... , CuZn39pb3,CuZn40pb2,C3770,DZR. Ball Brass as above,lead free brass,Brass ball. chrome coated,Iron ball chrome coated. Stem Brass Stem, Brass as above. Sealing PTFE/TEFLON ... ensure the Delivery and Quality! We smelt the brass bars,make the hot forging,machining and CNC processing,assembly,pressure test and ...