... , high tensile strength bolts for rail bridges etc.3, Various type and sizes of tie plates, clamps, fastenings, gauge plates, tie ... forward to the co-operation with you.We can produce many kinds of bolts. And also, we can produce the bolts ... ''-1 1/4'' 5.High tensile Description(TC bolt) Torshear type high strength bolts for steel structureMaterialAlloy steel ,carbon steel, stainless ...