Stainless Steel Flange, Pipe Fittings, Valve manufacturer / supplier in China, offering DIN 2638 DN1000 Pn40 ASTM A182 F316/F316L CNC Machining Weld Neck Flange Stainless Steel Flange, DIN 2638 DN1000 Pn25 ASTM A182 F304/F304L CNC Machining Welding Neck Flange Stainless Steel Flange, DIN 2638 DN800 Rn16 ASTM A182 F316/F316L Forging Welding Neck Flange Stainless Steel Flange and so on.