... copper alloy,for example CuZn39Pb2,CuZn40,CuSn7ZnPb,CuAl10Fe3,C37700,C84400,C83600,C94300,C95500,CuSn12Ni2,HPb59-1,HPb58-3 etc.. Casting ... :Silica sol lost wax casting ... (precision casting,investment casting),Sand casting Machining:CNC,four ...