advantages: high quality competitive price prompt delivery, Name of Products:Steel RailSpecification(KGS/M):,30Kg,43kg, 56kg, 74kg, 100kg etcMaterials:55Q,50Q,Q235Length:6,8,9,10product: heavy railplace of origin: ChinaDesignationMain Size(H B P A)Moment of inertia(J*cm4)Section module(W*cm3)Tensile strenght(kg/mm2)Weight(kg/m)A4555 45 125 249027.07022.1A5565 55 150 3117845.67031.8A6575 65 175 ...