... rail , crane rail , train rail , iron rail Standard: BS, DIN, GB, JIS Grade: 55Q, Q235, 45Mn, 50Mn 18kg steel rails Steel ... ,10m , Material: Q235, 50Q, 55Q Standard: YB222-63, GB11264-892 GB Heavy Rail Specification: 38kg/m, 43kg/m, 50kg/m Unit ...