In addition to the GB standard (China national standard), there are some other mainstream standards for heavy rails:
International Union of Railways (UIC)
Overview: The standards set by the International Union of Railways have a wide influence in the field of international railways and aim to promote the interconnection and standardization of international railway transportation.
Features: The UIC standard has detailed provisions on the size, material, mechanical properties and other aspects of heavy rails. For example, the head width and waist thickness of UIC 60 rails have clear numerical requirements, and the material is required to have good strength and toughness to adapt to different railway operating conditions.
American Railway Engineering Association (AREMA)
Overview: The standards set by the American Railway Engineering Association are mainly used in the United States and some countries and regions that adopt American railway technology.
Features: The AREMA standard divides heavy rails into multiple types and grades according to different railway operating conditions and needs. It has strict regulations on the chemical composition, physical properties and manufacturing process of heavy rails. For example, it has clear requirements for mechanical properties such as tensile strength and yield strength of heavy rails, and has different standards and specifications for different types of railway lines (such as trunk railways, branch railways, etc.).
European Standards (EN)
Overview: Standards formulated by the European Committee for Standardization are applicable to railway construction and operation in Europe.
Features: The requirements of the EN standard for heavy rails focus on the overall compatibility and coordination with the European railway system. In terms of the size, material and performance of heavy rails, it takes into account both the connection with international standards and the characteristics and needs of railways in Europe. For example, the EN standard has high requirements for the surface quality and geometric accuracy of heavy rails to ensure the stability and safety of trains when running at high speeds.
Japanese Industrial Standards (JIS)
Overview: Standards formulated by the Japanese Industrial Standards Survey are mainly used for railway construction and railway equipment manufacturing in Japan.
Features: The JIS standard has its own unique technical requirements for heavy rails based on the characteristics of Japanese railways. Most Japanese railways are narrow-gauge railways, and they are relatively advanced in high-speed railway technology. Therefore, JIS standard heavy rails have special provisions for adapting to narrow-gauge conditions and high-speed operation. For example, the material of its heavy rails has high requirements in terms of fatigue resistance and corrosion resistance to meet the frequent train operations and complex geographical environment conditions of Japanese railways.