High-strength bolts for buildings and bridges 1.Materials: low carbon alloy steel 20MnTiB 2. ... bolt.We supply various dimension track shoe bolt ,which are used for caterpillar, komatsu, hitachi, kobelco, daewoo, kato, hyundai, samsung, sumitomo, mitsubishi ... , Box, Bag, PalletQuality AssuranceISO 9001Our bolts and assembly products are used by a wide variety of individuals and organisations such as ...