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QU Crane Rail
The development of GB crane rails has undergone many technical iterations, forming a mature specification system represented by QU70, QU80, QU100, and QU120. Early rails focused on meeting basic load-bearing requirements. With the development of large-scale industrial equipment, new models have been continuously optimized in terms of materials, gradually upgraded from ordinary carbon steel to high-quality high-carbon steel, and the production process has also changed from traditional rolling to high-precision rolling. Today's QU series rails, while ensuring high strength, improve the accuracy of wheel-rail matching through more precise dimensional control. They are widely used in various lifting scenarios in modern industrial production and have become an important witness and support for industrial upgrading.
QU70, QU80, QU100 and QU120 are several common specifications of crane rails, and the material is generally manganese steel, such as U71Mn, and there are also materials such as U75V. These materials have high strength, hardness and wear resistance, and can withstand the huge pressure and impact force when the crane is running.
| Steel Grade | C(%) | Si | Mn | Cr | V | P | S | Tensile Strength (Rm/MPa) |
| U71Mn | 0.65~0.76 | 0.15~0.58 | 0.70~1.40 | – | – | ≤0.035 | ≤0.030 | ≥880 |
| U75V | 0.71~0.80 | 0.50~0.80 | 0.75~1.05 | – | 0.04~0.12 | ≤0.035 | ≤0.030 | ≥980 |
QU70 Crane rail
QU70 crane rails are suitable for:
Small cranes: such as electric hoists and single-beam cranes with a lifting capacity of ≤10 tons, which are commonly used in small workshops, warehouses, and light production lines.
Low-frequency operations: temporary handling rails used occasionally, or indoor environments with low requirements for rail strength (such as clean workshops in the food and electronics industries).
QU80 Rail
QU80 crane rails are suitable for:
Medium cranes: double-beam cranes and gantry cranes with a lifting capacity of 10-32 tons, which are widely used in mechanical processing workshops, ordinary warehouses, and small and medium-sized ports.
Conventional industrial environments: such as auxiliary workshops in steel plants and cargo loading and unloading rails in logistics centers.
QU100 Crane steel rail
QU100 crane rails are suitable for:
Heavy cranes: metallurgical cranes, casting cranes, and large gantry cranes with a lifting capacity of 32-100 tons, which are commonly found in steel plants, heavy machinery plants, and large ports.
High-impact working conditions: In scenarios such as lifting high-temperature molten steel and large castings, the rails need to withstand severe vibration and impact.
qU120 crane rail
QU120 crane rails are suitable for the following scenarios:
Ultra-heavy cranes: special cranes with a lifting capacity of ≥100 tons, such as cranes for lifting equipment in nuclear power plants and gantry cranes in large ship repair plants (lifting capacity can reach hundreds of tons).
Steel rail Packaging & Delivery
In the foreign trade packaging and transportation of GB crane rails, a composite protection system of "rust prevention + buffering" is adopted. First, a thin layer of anti-rust oil is sprayed on the surface of the rails. After it is fully penetrated, it is covered with EPE pearl cotton with buffering performance, which can not only isolate the air to prevent rust, but also buffer the transportation vibration. Then it is tightly wrapped with a stretchable wrapping film, and multiple rails are aligned and stacked into a stable column. Thickened galvanized steel wire is used for ring wrapping and bundling. Each circle of steel wire is evenly spaced, and metal locks are installed at the connection between the head and the tail of the steel wire to ensure that the rails are tightly bundled to prevent loosening and displacement during transportation.
GNEE RAIL is a professional service provider focusing on the international trade of GB standard crane rails, with a complete supply chain system and rich industry experience. Products strictly implement national standards, implement full-process quality control from raw material procurement to finished product delivery, and ensure that each rail meets the most stringent quality standards.
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