... ,43kg,50kggrade: U71Mn,U71,45Mnplace of origin: ChinaRail profile specification(kg/m)rail heightfoot widthhead widthwaist thickness865542571269.8569.8538.17.541579.3779 ... .930107.95107.9560.3312.3381341146813431401147014.5501521327015.5601761507316.57012012070288013013080321001501501002812017017012044 Chinese standard rail steel 35