... Roller Chain 1.material:Iron 2.standard roller chain 3.can making as your sample 4.OEM is ok Transmission Roller Chain 1.material:Iron2.standard roller ... 2. O-Ring Motorcycle chains: 428SO,520SO,525SO,530SO3. Roller chains: A series and B series4. Silent chains: SC3,SC4 ... chains: 25NP,35NP,41NP,40NP,50NP10. Coupling chains The Chain technic treatment is as below: 1.Shot peening2.Bluing3.Phosphating4 ...