... tensile strength bolts for rail bridges etc.3, Various type and sizes of tie plates, clamps, fastenings, gauge plates, tie pads, fish plates ... Bolt4.excavator and bulldozer track shoe bolt.We supply various dimension track shoe bolt ,which are used for caterpillar, komatsu, hitachi, kobelco, ... and commercial ship building industry Torshear Bolts Type High Strength Bolt for buildings and bridges