... ,428H,520,520H,6303)short pitch conveyor roller chain attachments:A-1,A-2.K-1,K- ... with H series5)agricultural chains:C212A series,ZGS38 combine chain series,3558T, rice harvester chains attachments6)simplex, duplex, ... triplex chainsThe Chain technic treatment is as below:1.Shot peening2. ... 215226.629.765063019.0511.9112.5724182.43537800 bicycle chains