Specification
Model | Section size (mm) | Section size(x.1) | Typical length(n) | Theoretical weight(kz/m) | Material |
Rail height | Base width | Head width | Web thickness |
100kg | 150 | 150 | 100 | 38 | 113.32 | 12 | 89.05 | 50MN U71MN U75V |
Other Crane Rail Specifications:
Model | Section size (mm) | Section size(x.1) | Typical length(n) | Theoretical weight(kz/m) | Material |
Rail height | Base width | Head width | Web thickness |
70kg | 120 | 120 | 70 | 28 | 67.30 | 12 | 52.77 | 50MN U71MN U75V |
80kg | 130 | 130 | 80 | 32 | 81.13 | 12 | 64.41 |
120kg | 170 | 170 | 120 | 44 | 150.44 | 12 | 118.5 |
Product Description
QU100 rail is a specialized rail for cranes and transport vehicles, primarily used in industrial applications. Examples include large-scale projects, container handling at ports, and transport routes for large machinery and equipment, particularly gantry cranes. QU100 crane rail is typically manufactured from high-strength manganese steels such as U71Mn. This steel offers high strength, high hardness, and good wear resistance.
As a leading crane rail supplier, Gnee Crane offers carefully engineered gantry crane rail and bridge crane rail solutions. We specialize in custom track gauge configurations ranging from 600 mm to 1520 mm, as well as customized cross-sectional parameters to meet diverse project requirements. Gnee Rail also offers crane rails in other gauges, such as QU70, QU100, and QU120.
Features Of Gnee’s QU100 Crane Rail
- Outstanding heavy-load capacity: With an allowable wheel load of up to 250kN, it’s suitable for 50-100-ton A6-A7 heavy-load cranes. It can withstand the static and dynamic impacts of the trolley/carriage weight plus the lifting capacity, preventing track deformation or cracking under heavy loads.
- Excellent mechanical and wear-resistant properties: Made of U71Mn material with a tensile strength of ≥880MPa and a surface hardness of HRC30-35, it offers excellent wear and fatigue resistance. Under normal operating conditions, it boasts a service life of 10-15 years, and with optimized coatings, it can be extended to over 20 years for heavy-load applications.
- High process precision and stable installation: Formed through continuous rolling on a universal rolling mill, it maintains a dimensional tolerance of ±0.5mm and a straightness of ≤1.5mm/m. It provides excellent compatibility with supporting components such as the pressure plate and wheels, preventing loosening after installation, reducing the risk of rail gnawing during operation.
- Wide environmental adaptability: Withstands temperatures up to 300°C and -40°C. Galvanized and epoxy-coated, it withstands corrosive and abrasive environments like coastal salt spray and steel mill dust, eliminating the need for frequent replacement and maintenance.
- Strong application adaptability: Widely used in core scenarios such as port gantry cranes, heavy-duty bridge cranes in steel mills, and heavy-duty mining equipment. Advanced customization services are available to meet the needs of diverse heavy-duty operating conditions.
What Customized Services Can Gnee Rails Supply?
QU rails are suitable for non-standard hole profiles.
- End Processing: Chamfering rail ends prevents sharp edges from damaging wheels or accessories. End milling ensures smooth joints and minimizes gaps between connected rails.
- Bent/Looped Rails: Cold or hot bending is performed according to design requirements, making them ideal for curved tracks or road sections. Internal stress and top surface flatness are strictly controlled during the bending process.
- Trolley Rails: QU series crane rails can also be used in port crane trolley rail systems. Gnee Rails can process short rails to customer specifications and also provides trolley rail accessories such as fixing blocks and end stoppers.
- Rail Beveling: We can provide crane rail beveling at angles including, but not limited to, 45° to accommodate special installation layouts or connection requirements.
- Customization: We can customize rail ends (welded joints) to meet project or customer requirements.
QU100 Rail Material Strength
| Property | U71Mn | U75V |
| Mechanical Property | | |
| Tensile Strength | ≥880 MPa | ≥880 MPa |
| Yield Strength | ≥457 MPa | — |
| Elongation | ≥9% | ≥10% |
| Hardness | HBW 360~300 | — |
| Chemical Composition | | |
| C | 0.65-0.76% | 0.71-0.80% |
| Si | 0.15-0.35% | 0.50-0.80% |
| Mn | 1.10-1.40% | 0.75-1.05% |
| P≤ | 0.03% | 0.03% |
| S≤ | 0.03% | 0.03% |
| V | ≤0.030% | 0.04-0.12% |
| Other | Nb≤0.010% | – |
QU100 Rail Applications
QU100 rails are designed for heavy, frequently used equipment and are commonly found in:
- Cranes: Such as gantry cranes, overhead cranes, and tower cranes.
- Large transport vehicles: Such as ladle cars in steel mills, container transfer vehicles at ports, and hopper cars in mines.
- Industrial plant internal rails: Any industrial application requiring heavy vehicles to operate on fixed tracks.
Accessories For QU-series Rail System
As a professional supplier of QU-type crane rails, Gnee not only offers high-quality QU70 rails, but also a full range of compatible installation accessories to ensure safe and efficient operation of the entire rail system. All accessories undergo strict quality control and perfectly match the QU crane rails, enabling “one-stop purchasing + worry-free installation.”
Crane Rail Clamps

Accessories | Materials | Specification |
Rail Clamps | Q235B, Q345 | Lateral force: Q235 ≥45 kN, Q345 ≥55 kN. Tightening torque: Q235 approximately 150 N·m, Q345 approximately 220 N·m. |
Railway Fishplate

Accessories | Materials | Specification |
Fishplate | U71Mn, 45# forged steel, Q235 rolled steel | Tensile strength ≥880 MPa; QU100 fishplates are available in 4- or 6-hole designs. |
Rail Rubber Pad

Accessories | Materials | Specification |
Rail Rubber Pad | Chloroprene, butadiene, or natural rubber | Corresponding to 7a-5; hardness 73-82 degrees; tensile strength ≥12.5 MPa. Available in three thicknesses: 5/8/10 mm. . |
High Tensile Rail Bolts

Accessories | Materials | Specification |
Rail Bolts | Strength grades 8.8 and 10.9 | For use with fishplates or pressure plates; 8.8/10.9 grade bolts comply with ISO/GB standards |
FAQ
What is the surface treatment for QU100 rails?
- Rust Prevention: Factory-applied sandblasting, tar-epoxy primer, and two coats of topcoat. Salt spray tests can withstand over 1,000 hours.
- Wear-Resistant Coating: Silicon carbide-aluminum oxide composite ceramic coating is available upon request to further reduce wear.
Can samples be provided? Are samples free?
Free samples are available, but shipping is at the buyer’s expense. Please contact us for details on payment methods.
What is the minimum order quantity?
Gnee supports small orders with no minimum order quantity. Discounts are negotiable for large-volume purchases or long-term partnerships.
How do I choose the right QU rail model?
The cross-sectional dimensions and material strength of different QU models determine their allowable wheel loads. The following is the applicable wheel load range for common models (based on U71Mn material, quenched):
QU Series Models | Weight per meter (kg/m) | Weight per meter (kg/m) | Weight per meter (kg/m) | Weight per meter (kg/m) |
QU70 | 52.8 | 120 | ≤120 | 5-20 tons (A1-A5 grades) |
QU80 | 63.5 | 130 | ≤180 | 20-50 tons (A4-A6 grades) |
QU100 | 89.0 | 150 | ≤250 | 50-100 tons (A6-A7 grades) |
QU120 | 118.0 | 170 | ≤350 | 100-200 tons (A7-A8 grades) |