GB standard light rail has many models, the common ones are 6kg/m, 9kg/m, 12kg/m, 15kg/m, 22kg/m, 30kg/m, etc. Its specific dimensions include rail head width, rail height, rail bottom width, rail waist thickness, etc. For example, for 9kg/m light rail, the rail head width is 32.1mm, the rail height is 63.5mm, the rail bottom width is 63.5mm, and the rail waist thickness is 5.9mm.
The steel grade and chemical composition should comply with relevant regulations. Common ones are Q235B, 55Q, etc. At the same time, there are strict restrictions on the content of impurity elements S and P in steel.
Commonly used in urban rail transit: used for transportation in densely populated new urban areas, transportation distribution centers, commercial centers and other areas, such as Changchun Rail Transit Line 3 in China and Shanghai Rail Transit Line 6. Industrial and mining enterprises: used to transport ore, raw materials and other goods in mines, factories and other places, such as rail transportation connecting mining areas and processing areas in mining. Forestry transportation: used to transport wood in forest areas, transporting felled wood from the mountains to processing sites or storage locations. Tourist attractions: Some tourist attractions will build light rail lines to facilitate tourists, such as the light rail in Chongqing Wansheng Ordovician Theme Park.