... industry,aerospace ,petrochemical plant, metallurgical machine Forged steel cylinder Grade:CK45N, CK60, S355J2G3, ST52-3, 42CRMO4V, ... ,aerospace ,petrochemical plant, metallurgical machine, auto-power, wind engine, pecision tools, etc Delivery condition: forged, forged+rough ... , etc Products: forged round bar, forged shafts, forged cylinder, forged disk, forged hollow, forged square, forged rings ...