1.ANSI sprocket type B 2.Hardness:45-50HRC 3.OEM welcomed 4.Processing: Forging,Lathe,Hobbing,Quenching,Broach keyway industrial sprocket,plate sprocket Material: C45, A3Hardend Teethprocessing: forging hobbing, quenching. CNC machineManufacture strictly in according to ISO, DIN,ANSI,JIS,BS,KANA,SATI standard Business typemanufacturer&exporterMain export marketSoutheast Asia, North and South ...