... YB222-63 3.Grade:Q235/55Q 4.Size: 38kg/m, 43kg/m, 50kg/m Light rail,Heavy steel rail,Crane rail Specifications 1Standard ... 63, GB2585-20072Size:6kg, 9kg, 12kg, 15kg, 22kg, 30kg, 8kg, 18kg, 24kg, 38kg, 43kg, 50kg3Length:6-12m4Material:55Q/Q235B/U71Mn ... rail:Size: 6kg/m, 8kg/m, 12kg/m, 15kg/m, 18kg/m, 22kg/m, 24kg/m, 30kg/mMaterial: Q235B 55Q2. Heavy railSize: 38kg/m, 43kg/m, 50kg/m, 60kg/mMaterial: U71Mn ...