Gnee Steel (Tianjin) Co., Ltd. is one of the most reliable manufacturers and suppliers of qu80 u71mn heavy-load crane rail in China, also supports customized service with low price. Please feel free to buy cheap qu80 u71mn heavy-load crane rail made in China here from our factory.
Product Introduction
GB crane rails strictly control quality during the production process, and all specifications of the QU series must pass multiple testing procedures. From chemical composition analysis to ensure that elements such as carbon and manganese meet the standards, to mechanical performance tests to verify strength and toughness, to rail surface flatness and geometric dimension testing, all follow strict standards. For example, the QU70 rail surface unevenness is controlled within 0.3mm/m to ensure the smooth operation of small lifting equipment; QU120 eliminates internal defects through flaw detection to ensure the safety of ultra-heavy equipment operations, and guarantees the reliability and durability of rails with high quality standards.
QU80 U71Mn heavy-duty crane rail is a special steel rail commonly used for crane track laying. U71Mn material, which is a high manganese steel with high strength, hardness and wear resistance. After proper heat treatment, its surface hardness can reach HB300 or above, which can effectively resist the wear caused by long-term rolling and frequent braking of crane wheels, and extend the service life of the rail. At the same time, U71Mn material also has good toughness and fatigue resistance, can withstand the repeated load of heavy-duty cranes, and is not prone to defects such as cracks and fractures.
| Chemical Components % | |||||||||||
| Mark | C | S1 | Mn | P | S | ||||||
| U71Mn | 0.65-0.77 | 0.15-0.35 | 1.0-1.5 | ＜0.040 | ＜0.040 | ||||||
Product Specifications
Product Packaging & Delivery
For the packaging and transportation of GB crane rails, after the surface of the rails is treated, anti-rust oil is evenly applied, and then the rails are sealed and wrapped with plastic film. Multiple rails are stacked into a stable structure, and are cross-bound horizontally and vertically with corrosion-resistant steel belts. The tightness of each steel belt is strictly tested. To prevent scratches, non-woven fabric is also padded between the steel belt and the rails. Finally, a warning label is wrapped around the outside of the entire bundle of rails to clearly mark the transportation precautions.
GNEE RAIL focuses on the supply of GB standard crane rails, adheres to quality as the core and service as the purpose. The products strictly follow the GB standard. The crane rails have excellent wear resistance, impact resistance and load-bearing capacity. We maintain long-term strategic cooperation with many high-quality steel mills to ensure a stable and reliable supply. In terms of quality control, we implement strict standards, pay special attention to indicators such as the microstructure and residual stress of the products, and ensure that the products maintain good performance stability during use.
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