75KG heavy rails have become the core building materials for heavy-duty lines with their super-strong load-bearing and fatigue-resistant performance, and play an irreplaceable role in scenarios such as national trunk railways and industrial and mining dedicated lines.
In heavy-duty trunk railways, 75KG heavy rails are the "skeleton" of large-volume transportation. Take the Daqin Railway as an example. This large energy transportation channel with an annual transportation volume of over 400 million tons uses 75KG heavy rails to lay seamless lines throughout the line. Its 150mm wide rail bottom forms a large-area fit with the sleeper, and with the 12kN/m lateral resistance provided by the SKL3 spring clip fastener, it can stably withstand the continuous impact of 10,000-ton trains. The full-length quenching treatment of the rail head allows it to control the rail surface wear within 0.3mm per year under the rolling of an average of 30 pairs of heavy-duty trains per day, and the rail replacement cycle is extended to 12 years, reducing maintenance costs by 30% compared to 60KG heavy rails.
Specialized lines for large industrial and mining enterprises are another important application area for 75KG heavy rails. In coal mines, iron mines and other mining areas, the axle weight of transport trains often reaches more than 30t. The thickened waist of 75KG heavy rails (8mm thicker than 60KG heavy rails) can increase the bending stress dispersion ratio by 25%, avoiding cracks in the waist due to frequent starts and stops.
The adaptability of 75KG heavy rails is particularly prominent in curved sections and ramp sections. In sections with a curve radius of less than 800m, its symmetrical cross-section design controls the offset of the wheel-rail contact point within 3mm, and with the ±16mm adjustment of the gauge baffle, it effectively suppresses the expansion of the gauge. On long and steep slopes of more than 12‰, the combination of 75KG heavy rails and anti-climbers can limit the longitudinal displacement of the rails to within 5mm/year, ensuring the stability of the line during braking and starting.
GNEE RAIL focuses on the import and export of GB standard rails. In addition to heavy rails, our main products include light rails, QU crane rails and various railway fasteners, which are widely used in railways, rail transit, port machinery and other fields.
Relying on a stable supply chain and strategic cooperation steel mills, we export our products to more than 30 countries and regions including Southeast Asia, Africa, the Middle East, and South America with competitive prices, efficient logistics and high-quality services.
We adhere to quality first, provide flexible trade solutions, and provide reliable rail products and technical support for global infrastructure.