... ,CW614n,CW617n, CuZn39pb3,CuZn40pb2,CW3770,DZR. Ball Brass as above,lead free brass,Brass ball. chrome coated,Iron ball chrome coated. Stem ... Theaded ISO228,BSP,NPT,UNION.3.Technics: Forged. Chrome plated. Nickel plated. Galvanized.4.Temperature: Normal or -20°C---150°C ... /4'',3/8'',1/2'',3/4'',1".7.Surface: Nickel plated. Chrome plated.8.Standard: GB,DIN,ANSI,EN,BS ...