In the operation system of industrial heavy lifting equipment, QU120 crane rails have become the key infrastructure supporting large-scale operations with their excellent performance. As one of the rail products with the largest cross-section and the heaviest weight per meter in China, QU120 crane rails weigh 118.5 kg per meter. With a large and sturdy structural design, it provides a stable foundation for heavy load operations.
In terms of specifications, the bottom width of QU120 crane rails is usually about 120 mm, and the side height is about 170 mm. Such a wide and thick cross-section gives it a strong load-bearing capacity. Its load-bearing range can reach 100-400 tons, which can easily cope with complex operation scenarios such as giant equipment lifting and ultra-heavy cargo loading and unloading. Whether it is a gantry crane that frequently lifts containers in a port terminal, or a heavy crane that lifts steel billets in a steel plant, the QU120 crane rail can rely on its high strength and stability to ensure the smooth operation of the equipment and reduce the safety hazards caused by track deformation or damage.
In terms of material selection, QU120 crane rails are generally made of high-strength alloy steel. Through special smelting processes and heat treatment processes, the rails have excellent tensile strength, compressive properties and fatigue resistance. Under long-term rolling by trains or heavy machinery, it can still maintain good rail surface flatness and structural integrity, greatly extending the service life and reducing maintenance frequency and costs.
| Material grade | Tensile strength | Main application | Percentage | |||||
| U71Mn | ≥880MPa | Conventional railway, subway, secondary lines | ~50%(Stock) | |||||
| U75V | ≥980MPa | High-speed railway (such as Beijing-Shanghai, Beijing-Harbin) | ~45%( New construction) |
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| U78CrV | ≥1080MPa | heavy-load lines Ultra-heavy-load sections such as Daqin Line (annual total weight exceeding 100 million tons) |
＜5% | |||||
In practical applications, QU120 crane rails have a wide range of adaptability. In the port logistics industry, it helps gantry cranes achieve efficient loading and unloading, speed up container turnover, and improve port throughput capacity; in the field of mining, it can stably support large mining cranes and ensure the continuous and efficient operation of ore lifting operations; at large bridge construction and other engineering sites, it provides solid tracks for heavy lifting equipment to help complete various difficult construction tasks.
As the process of industrial modernization accelerates, the application of large-scale and heavy equipment is becoming more and more common, and the requirements for bearing rails are also rising. QU120 crane rails have become the first choice for many key industrial scenarios with their powerful performance and reliable quality. In the future, with the continuous advancement of technology and the continuous upgrading of demand, QU120 crane rails will also continue to be optimized and iterated, playing a more important role in the industrial field.