... /m, 24kg/m, 30kg/m Material: Q235B 55Q 2. Heavy rail Size: 38 1. Light rail:Size: 6kg/m, 8kg ... /m, 22kg/m, 24kg/m, 30kg/mMaterial: Q235B 55Q2. Heavy railSize: 38kg/m, 43kg/m, 50kg/m, 60kg/mMaterial: U71Mn ... /m, 24kg/m, 30kg/m Material: Q235B 55Q 2. Heavy rail Size: 38 1. Light rail:Size: 6kg/m, ... /m, 22kg/m, 24kg/m, 30kg/mMaterial: Q235B 55Q2. Heavy railSize: 38kg/m, 43kg/m, 50kg/m, 60kg/mMaterial: U71Mn ...