... and samples Raw material: 65Mn./ 0Si2Mn/Q235/45# Commodity: Double fasten washer Type : Fe6 /ULS6/ULS7.... all kinds available ... Zinc, Plain, HDG…we main supply as follows: Commodity: Double fastening washers for railroad1.rail clip,e,skl clip,elastic ... bolt5,nuts and spring washers6.tie plate,base plate,rail plate7.fish plate,rail joint bar8.clamp plate,rail clamp,anchor plate,steel sleepers9.rail ...