... auto manufacturing, vessel industry,aerospace ,petrochemical plant, metallurgical machine Forged steel hollow Grade:CK45N, CK60, S355J2G3, ST52-3, ... forged, forged+rough machined, forged+finish machined, annealled, normalized, quenched+tempered, solution treat, etc Products: forged round bar, forged shafts, forged cylinder, forged disk, forged hollow, forged square, forged rings, forged mould, forged ...