steel forged bearing ring : 1.custom made 2.dia:1250mm-5000mm 3.carbon steel, ... forged ring, which are widely used in slewing bearing, wind power tower flange, connecting flange of oil pipe and other mechanical part ... C20,C35,C45, 16Mn, 50Mn, 42CrMo, S355, Q3454. equipments: DK5300 ring rolling mill, 5000T press, 50T forging manipulator5. annual production capacity ...