... Grade: 55Q, Q235, 45Mn, 50Mn 12kg steel rails Steel Rail1. Light Rail Specification: 12kg/m, 15kg/m, 18kg/m, 22kg/m ... , 22.3kg/m, 24.46kg/m, 30.1kg/m Length: 6-12m Material: Q235, 50Q, 55Q Standard: YB222-63, GB11264-892 ... , 88.96kg.m Length: 12m Material: U71Mn Standard: GB3426-82 6-30kg railroad light steel rail for farm or mining steel rail