... Chain 1.material:40MN/A32.standard roller chain3.making as your sample4.OEM is ok5.has taken measures to better antirust6.long ... Motorcycle chains: 428SO,520SO,525SO,530SO3. Roller chains: A series and B series4. Silent chains: SC3,SC4,SC5,SC6,SC8 ... Double pitch conveyor chains with attachments: 2040,2050,2060,20809. Nickel-plated chains: 25NP,35NP,41NP,40NP,50NP10. Coupling chains The Chain technic ...