Gnee Steel (Tianjin) Co., Ltd. is one of the most reliable manufacturers and suppliers of heavy rail u71mn qu70 crane rail in China, also supports customized service with low price. Please feel free to buy cheap heavy rail u71mn qu70 crane rail made in China here from our factory.
Product Introduction
The core function of crane rails is to provide a stable walking foundation, withstand the vertical and horizontal forces of the crane wheel pressure, and transfer the load to the track infrastructure. At the same time, the precise rail head profile guides the wheel running direction to prevent derailment risks.
U71Mn QU70 crane rails are a steel material specially used for crane rails. They have the characteristics of high hardness and wear resistance. They can well resist the impact force during crane operation without deformation, ensuring that the crane can run smoothly and safely on the track and improve operating efficiency.
The height of QU70 crane rail is 120mm, which is lower than QU80 QU100 QU120, but the head width is 70mm and the waist thickness is 28mm. This structural design enables it to better disperse the pressure when bearing the crane load, ensure the stability of the track and prevent deformation. It is made of U71Mn material, has high strength, and can withstand the large load generated by the operation of the crane. At the same time, the U71Mn material also gives the rails good wear resistance, toughness and fatigue resistance, which can resist long-term wheel friction, withstand frequent impacts and vibrations, and extend the service life of the rails.
Product Specifications
Product Application
Installation and maintenance
Strict installation requirements: Installation must be carried out in accordance with relevant technical standards and construction drawings. The rail joints need to be welded and fastened with bolts. The weld gap must be controlled. Considering the thermal expansion and contraction of the rails, the weld gap is generally controlled at 15-18mm. Heat treatment and grinding are required after welding. In addition, there are strict requirements for the vertical camber, horizontal lateral bending, and center position deviation of the rail beam. For example, the vertical camber must be controlled within 10mm, and the horizontal lateral bending must be within L/1500 (L is the length of the rail beam).
Regular inspection and maintenance: During use, the rails, bolts, and splints must be regularly checked for cracks, looseness, and corrosion. If cracks are found, they should be replaced in time, and other defects should be repaired in time. It is also necessary to measure and adjust the linearity and span of the rail to ensure safe and stable operation of the crane.
GNEE RAIL focuses on the international trade of GB standard crane rails, and insists on quality as its core competitiveness. The company has established a strict quality control system and conducts multiple performance tests on each batch of rails to ensure that the products meet national standards and industry specifications. Our products have excellent wear resistance, impact resistance and load-bearing capacity, and are suitable for all types of heavy lifting equipment. We focus on long-term cooperation with customers, providing market-competitive prices and stable supply capabilities.
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