... 800MM length: 2000-5850mm or as customer request in shape ring and bars4. Application: bearing ring ,steel rolling ... -speed and low-noise bearing, bicycle, motorcycle, automobile,bags, electronical5. Origin: China Chemical elements CSiMnPSCrMoNiCuASTM521000.98-1 ... : forged steel , rolled steel , drawing steel ,polishing steel2,Abnormal shape : quadrilateral steel, hexagons steel .3,Flat steel Size : dia ...