52100/100Cr6/GCr15 bearing steel round bar, OD 20-800MM, Hot forged/rolled black surface skype: halenliao607

52100/100Cr6/GCr15  steel,bearing steel, steel round bar Hot rolled Diameter: 16-75mm Hot forged: Diameter: 160-350mm Delivery condition:  hot rolled/forged, annealed/QT/Normalized, black surface/peeled/machined UT:Sep 1921-84 C/c

52100 bearing steel round bar both hot rolled and hot forged