... harden 3. competitive price4. trend to long cooperation Double pitch conveyor chainC2040, C2042, C2050, C2052, C2060, C2062, C2080 ... ,420H,428,428H,520,520H,6303)short pitch conveyor roller chain attachments:A-1,A-2.K-1,K-2 ... 2,SK-A,SK-24)double pitch transmissions v& conveyor chains :2040,2042,2050,2052,2060,2062,2080, ... .765063019.0511.9112.5724182.43537800 Short pitch conveyor chain with extended pins