Light Rail 8kg/m Standard:GB11264-89 Material:Q235,Q235B,50Q,55Q Weight:8.42kg/m Length:6m,8m,9m,10m,12m,etc Products ... sizes:1.Light rail size: 4kg/m, 6kg/m, 8kg/m, 9kg/m, 12kg/m,15kg/m, 18kg/m, 22kg/m, 24kg/m, 30kg/m material: Q235,Q235B,50Q,55Q Length ... ,9m,10m,12m,etc2.Heavy rail size: 38kg/m, 43kg/m,45kg/m,50kg/m,60kg/m,75kg/m material: 45Mn,50Mn,U71Mn,U71,U75V,U75VM ...