... : 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, 55Q2. GB Heavy Rail Specification: 38kg/m, 43kg/m, 50kg/m ... , CR100 Unit Weight: 15.2kg/m, 22.3kg/m/, 30.1kg/m37.2kg/m, 50.4kg/m, 73.3kg/m, 100.2kg/m Length: 10, 12m Material ...