Carbon Steel Slip on Flange Manufacturer Orientsteel Supplies Carbon Steel Slip on Flanges, Carbon Steel SO Flanges ranging 1/2 to 56 inches (DN15 to DN1,400mm).
China ASTM A182 Back Flange, Plate Flange Manufacturer Orientsteel Provides AWWA Class D Standard Back Flanges for Pipe System, ASTM A182 F304, 28 Inch.