Rail

The rail is the main component of the railway track. Its function is to guide the wheels of rolling stock forward, bear the huge pressure of the wheels, and transfer it to the sleepers. The upper rail must provide a continuous, smooth and minimal resistance rolling surface for the wheels. Electric railways or automatic blocking sections , the rails can also be used as track circuits
The types of rails are expressed in terms of approximate mass per meter. The main types of rails in my country's railways include /, /, / and /
The standard length of rails is two Kind
Classification. Rails can be divided into heavy rails and light rails based on their approximate weight in kilograms per meter
①Heavy rails. According to the type of steel used, it is divided into ordinary manganese-containing rails, copper-containing carbon steel rails, high-silicon copper-containing steel rails, copper rails, manganese rails, silicon rails, etc. There are mainly three types: , , and . In addition, there are rails used on a few lines, and rails that are planned to be used on lines with large traffic volumes and high vehicle speeds. It stipulates the technical conditions of my country's rails, and their dimensions and codes are as shown in the table.
②Light rail. The varieties are specified in the standards. There are mainly different rail types, such as, For detailed technical conditions, please refer to the Chinese Standard.
Crane rail,,) material,
Heavy rail,,,,
Light rail,,,,,
Rail height, head, width, waist and thickness, theoretical weight
Rail height, head Theoretical weight of wide and thick waist
Theoretical weight of high rail head, wide waist and thickness
Theoretical weight of high rail head, wide waist and thickness
Theoretical weight of high rail head and wide waist Thick theoretical weight
Theoretical weight of rail height, head width, waist thickness
Theoretical weight of rail height, head width, waist thickness