... Standard: BS, DIN, GB, JIS Grade: 55Q, Q235, 45Mn, 50Mn 15kg steel rails Steel Rail1. Light Rail Specification: 12kg/m ... , 15kg/m, 18kg/m, 22kg/m, 24kg/m, 30kg/m Unit ... , 88.96kg.m Length: 12m Material: U71Mn Standard: GB3426-82 15kg steel rails