The Sprocket belongs to castings, which are first poured, castings tempered, blanks sanded, rail surface quenched, tempered, and machining.it is widely applied in bulldozers and excavators of Caterpillar, Komatsu, Hitachi, Kobelco, Kubota, Yanmar and Hyundai etc, have different manufacturing technology, like casting, welding and forging, use precision processing technology and special heat treatment technique to reach best wear-resistance and have maximum extent loading capacity as well as anti-cracking. Our products are according to the standard of OEM to manufacture.