Structural classification of rails
Has the best bending performance of I-shaped section by section shape of rail, a rail, rail base and rail waist of three parts. In order to make the rail better withstand the force from various aspects, and ensure the necessary strength conditions, the rail should have enough height, the head and the bottom should have enough area and height, the waist and the bottom should not be too thin.
The type of rail is expressed by the mass kilogram of rail length per meter. The rails used in China's railways are 75kg/m, 60kg/m, 50kg/m, 43kg/m and 38kg/m.
These types of rail, rail 38kg/m has stopped production, 60kg/m, 50kg/m rail on the main line and the dedicated line laying, laying rail general 43kg/m. For heavy haul railways and specially busy sections of railways, the 75kg/m rail is laid.
