A series 100 chain used for Industry 1.material:40MN/A3 2.pitch:31 ... 3.plate thickness:4.00mm A series 100 chain used for Industry 1.material:40MN/A32.pitch:31.750mm3. ... .50109.24.1717.7 Main products as the following: 1.Motorcycle Chains: 25H (04CH), 415, 415H, 420, 420H, 428, 428H ... , 530, 530H, 05MA, 05MB, 05MC, 06MC 2. O-Ring Motorcycle chains: 428SO,520SO,525SO,530SO3. Roller chains: A series and ...