... Detailed Production DescriptionANSI 40 duration high strength roller chain A series 1)material : 40mn2)pitch : 12.7MM3)plate thickness ... 61cmMain products as the following ANSI 40 duration high strength roller chain A series 1)roller chains ... :420,428,428H,530,530H,6303)short pitch conveyor roller chain attachments:A-1,A-2 ... -1,SA-2,SK-A,SK-24)double pitch transmissions v& conveyor chains :2040,2050,2060 ...