... : 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: 38kg/m, 43kg/m, 50kg/m Unit Weight: 38.733kg/m, 44.653kg/m, 51.514kgm Length ...