... , Cast Iron 2)Standard:DIN,ANSI,BS,JIS 3)Processing:Forgin-Machining-Hobbing Finished Bore SprocketFeatures:1)Material:C45 steel, Cast ... Iron2)Standard:DIN,ANSI,BS,JIS3)Processing:Forgin-Machining-Hobbing4)ISO9001 certificate5)Excellent and high quality contral, advanced ...