... )material : 40mn 2)pitch : 19.050mm 3)plate thickness : 2.42mm ANSI 60 A series simplex roller chains ... (12A-1R)1)material : 40mn2)pitch : 19.050mm3)plate thickness : 2 ... requirementMain products as the following1)roller chains: A series(12.7-50.8mm pitches),B series ... chain attachments:A-1,A-2.K-1,K-2,SA-1,SA-2,SK-A,SK-24)double pitch transmissions v& conveyor ...