... tensile strength bolts for rail bridges etc.3, Various type and sizes of tie plates, clamps, fastenings, gauge plates, tie pads, ... komatsu, hitachi, kobelco, daewoo, kato, hyundai, samsung, sumitomo, mitsubishi, etc.Specifications Size from: M5 - M42 Length: 10mm-200mm Hexagon head bolt ... co-operation with you.We can produce many kinds of bolts. And also, we can produce the bolts according to customers ...