... Production Description(16B-2) durable duplex roller chains &chain manufacturer B series1)material : 40mn2)pitch : 25.4mm3)plate thickness : 3 ... )roller chains: A series(12.7-63.5mm pitches),B series (9.525-50.8mm pitches)and their heavy ... short pitch conveyor roller chain attachments:A-1,A-2.K-1,K-2,SA-1,SA-2,SK-A,SK-24) ... requirements. (16B-2) durable duplex roller chains &chain manufacturer B series