... pitch:15.875mm 3.plate thickness:2.42mm Best quality 530H A3 motorcycle chain 1.material:40MN/A32 ... produce as your sample or drawing9.high quality,reasonable price and prompt delivery are what we persue10. ... 428SO,520SO,525SO,530SO3. Roller chains: A series and B series4. Silent chains: SC3,SC4,SC5,SC6, ... : 25NP,35NP,41NP,40NP,50NP10. Coupling chains The Chain technic treatment is as below:1.Shot peening2 ...