Crane Rail QU70 QU80 QU100 QU120 Rail
GB crane rails are the core support for the stable operation of various lifting equipment, among which QU70 Rail, QU80 Rail, QU100 Rail and QU120 Crane Rail are commonly used models. With balanced load-bearing performance, QU70 Rail is widely applicable to conventional operation scenarios such as factories and small-to-medium-sized docks, providing reliable track guarantee for daily cargo lifting.
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About QU Series Crane Rail
Crane rail QU70, QU80, QU100, and QU120 are specially designed steel rails for laying tracks for various types of cranes, including overhead cranes, gantry cranes, railroad cranes, and other lifting equipment . Engineered to withstand dynamic loads, frequent movements, and harsh working conditions, QU crane rails ensure the safe and efficient transport of heavy cargo, containers, and raw materials across critical operational zones.
Specifications of the QU Crain Rail：
To ensure perfect compatibility with your crane wheels and fastening systems (such as bolted or welded rail clips), please refer to the standard specifications of our QU series crane rails:
| QU Crane Rails | Head Width A ±1(mm) |
Bottom Width B (mm) |
Rail Height H ±0.8(mm) |
Waist Thickness ±1(mm) |
Nominal Weight (kg/m) |
Reference Load (ton) |
|---|---|---|---|---|---|---|
| QU70 | 70 | 120 | 120 | 28 | 52.77 | 32 |
| QU80 | 80 | 130 | 130 | 32 | 64.41 | 50~75 |
| QU100 | 100 | 150 | 150 | 38 | 89.05 | 100~125 |
| QU120 | 120 | 170 | 170 | 44 | 118.50 | 160 |
Drawings of QU Crane Rail:
Material parameters of crane rails
Manufactured from high-strength U71Mn, our crane rails feature excellent wear resistance, high load-bearing capacity, and superior impact strength . With precision hot rolling and normalizing heat treatment, the rail's hardness is evenly distributed, ensuring no deformation or spalling under heavy wheel pressure .
Material Characteristics:
- U71Mn: The standard material for QU series crane rails, offering excellent tensile strength and wear resistance for most crane applications
- Heat Treatment: After hot rolling, rails undergo normalizing treatment to ensure uniform hardness distribution and internal stress relief, preventing deformation or spalling under heavy wheel pressure
| Category | Grade | C | Si | Mn | V | P (max) | S (max) | Standard |
| Carbon Structural Steel | Q235B | ≤0.20 | ≤0.35 | ≤1.40 | - | 0.045 | 0.045 | GB/T700-2016 |
| Q275B | ≤0.22 | ≤0.35 | ≤1.50 | - | 0.045 | 0.045 | GB/T700-2016 | |
| Quality Carbon Structural Steel | 35Mn | 0.52-0.60 | 0.17-0.37 | 0.5-0.8 | - | 0.035 | 0.035 | GB/T699-2015 |
| 30Mn | 0.27-0.34 | 0.17-0.37 | 0.7-1.10 | - | 0.035 | 0.035 | GB/T699-2015 | |
| Low Alloy Structural Steel | Q355B | ≤0.20 | ≤0.50 | ≤1.70 | - | 0.035 | 0.035 | GB/T1591-2018 |
| Light Rail Steel | 50Q | 0.40-0.60 | 0.15-0.35 | ≥0.40 | - | 0.04 | 0.04 | GB/T11264-2012 |
| 55Q | 0.50-0.60 | 0.15-0.35 | ≥0.60 | - | 0.04 | 0.04 | GB/T11264-2012 | |
| 50SiMnP | 0.45-0.58 | 0.50-0.80 | 0.60-1.00 | - | 0.12 | 0.04 | - | |
| Heavy Rail Steel | U77MnCr | 0.72-0.82 | 0.10-0.50 | 0.80-1.10 | - | 0.025 | 0.025 | TB/T2344-2020 |
| U71Mn | 0.65-0.76 | 0.15-0.35 | 1.10-1.40 | - | 0.03 | 0.03 | GB/T2585-2021 | |
| U75V | 0.71-0.80 | 0.50-0.80 | 0.70-1.05 | 0.04-0.12 | 0.03 | 0.03 | - | |
| 900A | 0.60-0.80 | 0.08-0.60 | 0.80-1.30 | - | 0.04 | 0.04 | UIC860-O | |
| R260 | 0.60-0.80 | 0.13-0.60 | 0.65-1.25 | - | 0.03 | 0.03 | EN13671-1:2011+A1:2017 | |
| Coal Mining Steel | M540 | 0.20-0.29 | 0.17-0.37 | 1.30-1.80 | - | 0.045 | 0.045 | GB/T3414-2015 |
| Mining Steel | 20MnK | 0.15-0.26 | 0.20-0.60 | 1.20-1.60 | - | 0.045 | 0.045 |
What are the differences between A Series crane rail and QU Series crane rail?
QU series crane rails are specialized, heavy-duty Chinese standard (YB/T 5055) rails designed for high-intensity, industrial lifting, featuring wider heads, thicker waists, and lower profiles for superior load-bearing (70mm to 120mm head widths). In contrast, "A" series (DIN 536) rails are European standards designed for lighter to medium loads, generally having different profile dimensions.
Key Differences Between QU Series and A Series Crane Rails
- Standard and Origin: QU rails follow the Chinese standard (YB/T 5055-93). "A" series rails (e.g., A45, A55, A65) adhere to the European DIN 536 standard.
- Design Profile: QU rails are designed with a wider head to increase contact with crane wheels, a thicker waist to prevent deformation, and a lower overall height for improved stability under heavy vertical and lateral pressure.
- Load Capacity & Application: QU rails (specifically QU70, QU80, QU100, QU120) are engineered for heavy-duty, continuous-duty applications like container cranes, port handling, and steel plants. A-series rails are often used for lighter, less frequent, or smaller overhead crane applications.
- Material: QU rails are typically made from high-strength steel, such as U71Mn.
- Sizes: QU rail names indicate the head width in millimeters (e.g., QU80 has an 80mm head).
| Crane Rail Type | Standard | Size | Material | Standard Length |
|---|---|---|---|---|
| QU Series | Chinese YB/T 5055-2014 |
QU70, QU80, QU100, QU120 |
U71Mn, U75V | 12m |
| A Series | German DIN536 |
A45, A55, A65, A75, A100, A120, A150 |
50Mn,U71Mn | 10/12/15m |
Frequently Asked Questions
Q: Do you supply the matching rail clips and rubber pads for the QU rails?
A: Yes. We are a comprehensive track solutions provider. We supply matching heavy-duty weldable rail clips, bolted crane clips, continuous rubber sole pads, and joint bars specifically designed for QU70 to QU120 profiles.
Q: Can these QU series rails be thermite welded on-site?
A: Absolutely. U71Mn steel is highly suitable for seamless thermite welding. We highly recommend continuous welding for overhead crane runways to minimize wheel impact and track wear at the joints.
Q: Can QU crane rails be used with European crane systems?
A: Yes, QU crane rails are compatible with DIN and FEM standards for global interoperability.
GNEE Rail is committed to providing high-quality GB standard rail products to the global market. Our product portfolio covers GB rails of various specifications as well as supporting railway fasteners and railway fastener systems, such as the SKL rail fasteners system, E clip fastening system, KPO clamp rail fixing system, etc. These products are strictly manufactured in accordance with corresponding standards and can be applied to diverse industrial scenarios.
Through stable cooperation with large steel mills, we ensure sufficient supply sources and competitive prices. If you need reliable rail supply, please feel free to contact GNEE.
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