Disposable Medical SuppliesChina ASTM B171 Copper Nickel Plate Tube Sheet ,Blind Flange, Forgings, with C.E. PED 4.3 or 3.1 Copper Alloy,Cupronickel Flange,So/Slip-on,Wn/Weld- Neck, Bl/Blind, Find details about China Copper Nickel Flange, Copper Nickel Tubesheet from ASTM B171 Copper Nickel Plate Tube Sheet ,Blind Flange, Forgings, with C.E. PED 4.3 or 3.1 Copper Alloy,Cupronickel Flange,So/Slip-on,Wn/Weld- Neck, Bl/Blind