... Duplex roller chains for ANSI 80-2 1) material:40Mn 2) plate thickness:3.25mm 3) color:natural,black,blue,yellow ANSI 80-2 Aseries duplex roller chains(16B ... requirementMain products as the following1)roller chains: A series(12.7-50.8mm pitches),B series (9.525-50.8mm ... 2082,2080H5)agricutual chain:ZGS38 series, 212A(2060) with attachment series,6)simplex,double,triplex chainsThe chain technic is ...