Crane rail is a special kind of rail track providing a running surface for various types of cranes such as gantry cranes, overhead cranes. QU crane rails are mainly applied in big projects including wharf, ports and yards. The sizes of crane rail needed are decided by the wheel of cranes. For the safe operation of cranes, there is a certain distance between the rail surface and crane wheel rim. Therefore, it doesn't mean the larger width of the rail head is better. Suitable crane rail size is recommended for clients to fit the specific model of crane.
The YB/T 5055-1993 U71Mn QU70 crane steel rail is a high-strength rail specially designed for heavy-duty crane tracks, widely used in port terminals, industrial workshops, and logistics center crane tracks.
Drawing of U71Mn QU80 Crane Rail
| Size | Rail Height(mm) A |
Base Width(mm) B |
Head Width(mm) C |
Web Thickness(mm) t |
Weight(kg/m) |
|---|---|---|---|---|---|
| QU70 | 120 | 120 | 70 | 28 | 52.80 |
| QU80 | 130 | 130 | 80 | 32 | 63.69 |
| QU100 | 150 | 150 | 100 | 38 | 88.96 |
| QU120 | 170 | 170 | 120 | 44 | 118.10 |
This QU70 rail is made of high-quality U71Mn steel and meets YB/T 5055-1993 standards, with a rail height of 135mm, base width of 130mm, web thickness of 17mm, head width of 70mm, and lengths customizable per client requirements. Advanced heat treatment ensures excellent wear resistance, fatigue strength, and long-term stability under frequent heavy crane operations.
| U71Mn | Mechanical property | Chemical Composition(%) | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yield Strength |
Tensile Strength |
Elongation | Hardness | C | Si | Mn | S | P | Cr | Ni | Cu | |||
| MPa | kg/mm² | MPa | kg/mm² | min | HB | ≤ | ≤ | ≤ | ≤ | ≤ | ||||
| ≥880 | 9% | 0.65-0.76 | 0.15-0.35 | 1.10-1.40 | 0.030 | 0.030 | 0.025 | 0.025 | 0.025 | |||||
The QU70 crane rail is suitable for port crane tracks, industrial workshop crane tracks, and heavy-duty logistics transport lines. Its high-strength design can withstand frequent heavy-load operations, improving transport efficiency and track safety. GNEE RAIL provides matching rail clips, screw spikes, fish plates, and rail pads to ensure easy installation and long-term track reliability.
GNEE RAIL is a leading railroad track and crane rail supplier in China. Customers from domestic and abroad can choose from a complete range of rails. Our products such as QU70 crane rail, A100 crane rail, 90lbs rail, ASCE rail, 115RE rail, 136RE rail, UIC rail, BS rail, etc. are well accepted worldwide. Other track materials including railway fasteners and crane rail accessories are provided according to the clients' requests.
