... best quality and reasonable price 4.Chain wheel can be design The materials of the chain wheel can be produced according to ... Forging: Shape Diameter(m) Length(m) Shaft ≤2.5 ≤15 Block ≤4.0 / Ring ≤4.9 ≤3.5 Cylinder ≤1.5 ≤8 ... .0 7. Standards: GB, JIS, AISI, SAE, ASTM/ASME, EN, DIN, ... . Certification: ISO9001: 2000, CCS 10. OEM and Customized service offered Chain wheel