Ss Flange, CS Flange, Nickel Alloy Forged manufacturer / supplier in China, offering High-Strength ASTM A182 F51 Duplex Stainless Steel Forged Rings for Oil & Gas, Custom Large-Diameter Forged Rings – Wind Turbine & Heavy Machinery, ASTM A182 F321 F51 F53 F55 F11 F22 F91 F92 ASTM A105 A350 Lf2 Lf3 A694 F52 Hollow Cylinder Forged Tube Forged Pipe Forged Coupling Forged Hollows and so on.