... roller chains for ANSI 60-3 1) material:40Mn 2) plate thickness:2.42mm 3) color:natural,black,blue,yellow ANSI 60-23Aseries duplex roller ... ,630,25,25H3)short pitch conveyor roller chain attachments:A-1,A-2.K- ... 2062,2060H,2062H,2080,2082,2080H5)agricutual chain:ZGS38 series, 212A(2060) with attachment ... series,6)simplex,double,triplex chainsThe chain technic is as bellow1)shot peening2)bluing3 ...