... Q235 55Q,etc 3.Type:QU70-QU120 & 9-75 kg/m Light Rail (GB 11264-1989) Typekg/mSection SizemmTheoreticalWeightkg/ ... Rail (GB 3426-1982) Typekg/mSection SizemmTheoretical Weightkg/m Lengthm HeightBottom WidthHead WidthWeb ThicknessQU70120120702852.809, 9.5, 10 ... Structure Steel, difference kind of pipes, Galvanized Steel Pipe, Seamless Steel Pipe, Square/Rectangular Steel Tube, Light/Heavy Steel Rail ...