GB (national standard) heavy rail, light rail and crane rail are important basic materials in the field of railways and lifting equipment, each of which has different functions and missions.
GB heavy rail is mainly used for railway trunk lines. It has a large rail type and high strength, and can withstand frequent rolling by high-speed heavy-load trains. For example, the 60kg/m heavy rail commonly used in high-speed railways, by optimizing the steel composition and rolling process, not only has high wear resistance, but also can effectively reduce train vibration and noise at high speeds, ensuring driving safety and stability.
Light rail is mostly used in urban rail transit, mining transportation and other scenarios. Compared with heavy rail, it is lighter and less expensive. Its design focuses more on flexibility and economy. For example, the light rail used in urban trams, while meeting the passenger flow transportation needs, has relatively low requirements for the track foundation, which is convenient for laying in complex urban environments.
Crane rails are specially used for the operation of lifting equipment, and need to withstand huge concentrated loads and frequent impacts and wear. Its unique head shape design can enhance the contact stability with the crane wheel and prevent derailment; its high hardness and high strength ensure that the rail is not easily deformed under long-term heavy pressure, ensuring safe and efficient lifting operations.
Although the three have different application scenarios, they all strictly follow the GB standard, with clear specifications from chemical composition, mechanical properties to dimensional accuracy to ensure reliable use under different working conditions.