12kg steel rails mine rail , crane rail , train rail , iron rail Standard: BS, DIN, GB, JIS Grade: 55Q, Q235, 45Mn, 50Mn 12kg steel rails Steel Rail1. Light Rail Specification: 12kg/m, 15kg/m, 18kg/m, 22kg/m, 24kg/m, 30kg/m Unit Weight: 12.2kg/m, 15.2kg/m, 18.06kg/m, 22.3kg/m, 24.46kg/m, 30.1kg/m Length: 6-12m Material: Q235, 50Q, 55Q Standard: YB222-63, GB11264-892 GB Heavy Rail Specification: ...