Heavy Rail 1.Standard:GB 2585-2007 2.Grade:U71Mn 45Mn 3.Type:38-45kg/m 4.Length:12.5m 25m 50m ... 100m Heavy Rail(GB 2585-2007) Typekg/mSection ... Steel Plate, Cold Rolled Steel Plate, Mild Steel Plate, Structure Steel, difference kind of pipes, Galvanized Steel Pipe, Seamless Steel Pipe, Square/Rectangular Steel Tube, Light/Heavy Steel Rail ...