... 69QU1001501501003888.96QU12017017012044118.10 Steel rail is the main component of railroad track.Steel rail's function is ... , and transfer to the sleeper.Steel rail must provide wheels with continuous and ... 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 ...