... 2)high-standard technician team 3)strict quality control Copper pipe coupling1.Material: The part showed is made up of ... do any metal or alloy parts,such as stainless steel,carbon steel,ductile iron,melleable iron,aluminum,grey iron,bronze ... excellent serviceMaterial Grey iron,ductile iron,malleable iron,stainless steel, carbon steel,aluminium,brass etc.standardDIN, ASTM, BS, JIS etc.processsand ...