... 050mm 3)plate thickness : 2.42mm ANSI 60 A series simplex roller chains(12A-1R)1)material : 40mn2)pitch ... products as the following1)roller chains: A series(12.7-50.8mm pitches),B series (9.525-50 ... 530,630,25,25H3)short pitch conveyor roller chain attachments:A-1,A-2.K-1,K-2,SA-1 ... with attachment series, 6)simplex,double,triplex chainsThe chain technic is as bellow1)shot peening2)bluing3)phosphating4) ...