The rail can be divided into two kinds, heavy rail and light rail, with a weight of about a kilogram per metre:
Heavy rail. According to the steel used, steel grades are divided into: ordinary manganese rail, copper containing carbon steel rail, high silicon copper steel rail, copper rail, manganese rail, silicon rail, etc.. There are 38, 43, three and 50kg. In addition, there are 45kg rails used on a small number of lines, which have been planned for 60kg rail lines with large volume and high speed. GB2585 – 81 specifies the technical specifications for rails of 38 – 50kg/m in china.
Light rail. There are 9, 12, 15, 22, 30 and other rail types.
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