Solder Ring Copper Reducer Coupling,Copper fitting 1.Material: red copper. 2.EN1254, BS864, ANSI/ ... ASME B16.22, DIN2856, GB/T116 Solder Ring Copper Reducer Coupling,Copper fitting,1.Material: red copper.2.Standard: EN1254, BS864 ... all customers around the world. J9303 Solder Ring Copper Reducer Coupling