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High Precision CNC Machined Backing Ring Stainless Steel Fitting Pipe Flange

High Precision CNC Machined Backing Ring Stainless Steel Fitting Pipe Flange
  MaterialCarbon steel ASTM A105. ASTM A350 LF1. LF2, CL1/CL2, A234, S235JRG2, P245GH P250GH, P280GHM 16MN, 20MN ,20#...