China Hot selling 40 08A 50 10A 60 12A Transmission Roller Chain

Product Description Roller chain is a power transmisssion component.It is composed by 4 parts.They are plate,roller,bush and pin.The materials are as follow:Plate:40Mn,45Mn,40Cr.Roller:10#,20#,45#,40Cr.Bush:10#,20#.Pin:20CrMnMo,30CrMnTi,40Cr.Roller chains are widely...