QU120 Rail
QU120 rail is the largest crane rail profile in the QU series and is commonly used for high-capacity overhead cranes, gantry cranes, and steel mill applications. Manufactured from U71Mn steel, it offers high resistance to wheel load concentration and repeated crane movements. Standard lengths are available from stock, and custom cutting services can be provided according to project requirements.
Every rail delivered with traceable quality assurance
QU120 Rail Specifications
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Rail Size | QU120 | Rail Type | Crane Rail |
| Standard | YB/T5055-2025 | Material | U71Mn |
| Rail Height | 170 mm | Head Width | 120 mm |
| Bottom Width | 170 mm | Web Thickness | 44 mm |
| Weight | 118.10 kg/m | Length | 12 m or customized |
For custom lengths or higher-strength materials, please contact our team for tailored production solutions.
QU120 Rail Material Strength
| U71Mn | Mechanical Property | Chemical Composition(%) | |||||||||
| Yield strength | Tensile strength | Elongation | Hardness | C | Si | Mn | S | P | |||
| MPa | kg/mm² | MPa | kg/mm² | min | HBW | ≤ | ≤ | ||||
| — | —- | ≥880 | — | 9% | 260 | 0.65-0.76 | 0.15-0.35 | 1.10-1.40 | 0.030 | 0.030 | |
Applications of QU120 Rail
The QU120 is specifically designed for the most demanding heavy-duty applications in China today and is widely used in the following sectors:
Ports and Terminals: Used to support massive shore-based container cranes (gantry cranes) with enormous lifting capacities, withstanding frequent impacts from wheel loads exceeding 35 tons per wheel. Compared to the QU80, it reduces track surface contact stress by approximately 35%, significantly extending the track’s service life in salt fog environments. Its high-manganese steel offers 60% better corrosion resistance than ordinary carbon steel.
Metallurgy and Steel Industry: Its high-strength, high-rigidity structure makes it suitable for metallurgical crane tracks in continuous casting bays and steelmaking bays with duty classes of A7 or higher. It can withstand extreme conditions such as high-temperature exposure and the impact of falling molten steel ladles, ensuring safety.
Energy and Infrastructure: The reliability and stability of QU120 make it commonly used in heavy-duty circular crane rail systems within nuclear power plant buildings, where special heat treatment is required to meet extremely stringent technical requirements such as radiation resistance and tolerance to extreme environments.
Heavy Machinery Manufacturing: In manufacturing workshops for shipbuilding and heavy equipment industries, QU120 rails support bridge or gantry cranes with load capacities of hundreds of tons, ensuring the precise lifting and assembly of oversized and heavy components.
Advantages of Our QU120 Rail
Unmatched Load-Bearing Performance
The 170mm-wide base and 44mm web thickness provide exceptional stability, capable of supporting static and dynamic loads in excess of standard rails.
Immediate Availability
With QU120 crane rails in standing inventory, we offer rapid shipment to minimize project delays, ideal for urgent replacements or time-sensitive projects.
Precision Engineering
Manufactured to strict YB/T5055-2014 tolerances, QU120 rails feature smooth surfaces and uniform dimensions, reducing friction and enhancing crane operational efficiency.
Corrosion & Wear Resistance
U71Mn steel’s natural hardness and optional anti-corrosion treatments (see Customization Services) ensure long lifespan in corrosive environments like coastal ports or chemical plants.
Glory Rail Custom Processing Services
Manufactured according to YB/T 5055-2025 QU series crane rails (QU70, QU80, QU100, QU120) are ideal for port cranes, overhead cranes, gantry cranes, and heavy-duty industrial applications. We offer tailored processing services to adapt each rail to your installation and project needs.
End machining: Rail ends are chamfered or precision-milled to improve joint fit and eliminate edge damage during wheel transition.
Curved rail forming: Cold or hot bending is applied under controlled stress conditions to achieve stable alignment for curved track sections.
Trolley rail preparation: Short rail sections and matching accessories are prepared for crane trolley systems used in port and heavy-duty handling applications.
Bevel cutting: Non-standard cutting angles, including 45° and project-specific geometries, are produced to suit complex installation layouts.
Surface protection treatment: Sandblasting, painting, or hot-dip galvanizing is applied to improve corrosion resistance in outdoor and marine environments.
Special end fabrication: Rail ends can be manufactured according to drawings for welded joints or custom structural connections.
Based on my extensive engineering experience in rail manufacturing, Glory Rail focuses on delivering precision-engineered crane rail systems designed for demanding industrial applications. Operating under the established YB/T 5055-2025 standard and with ISO 9001 certified quality management, we integrate controlled steel processing and rigorous in-process inspections. This ensures consistent dimensional accuracy, mechanical performance, and long-term operational reliability for all QU series rails, including QU70, QU80, QU100, and QU120
Complete Crane Rail Accessories for QU120 Rail
One-Stop Sourcing, Hassle-Free Installation
As a dedicated supplier of QU-series crane rails, Glory Rail offers not only high-quality QU120 crane rails but also a full range of matching installation accessories — all under strict quality control to ensure perfect compatibility and reliable system performance. Experience the convenience of one-stop procurement and worry‑free installation.
Fishplate (Joint Bar) — Manufactured from Q235B steel with hot‑dip galvanized finish. Designed to connect QU120 rail sections with a precision fit tolerance of +0.3 mm. Creates a gap‑free bolted joint and ensures stable load transfer across rail ends.
Rail Clip — Specifically engineered for QU‑series rail seats. Made from forged 45# steel with a dual anti‑corrosion coating. Available in two configurations: welded type and bolted type. Features an integrated spring washer to minimize vibration transmission between the rail and supporting structure.
High‑Strength Bolt Kits — Grade 8.8 and 10.9 assemblies, manufactured to ISO/GB standards. Finished with Dacromet coating, delivering 500+ hours of salt spray resistance per ASTM B117 — three times more durable than standard bolts. 10.9 grade bolts are required for QU120 rail joints under heavy crane loads; we recommend torque‑tension calibration per ISO 16047 during installation.
Rubber Rail Pad — Installed beneath QU‑series rails. Made from natural rubber blended with nitrile butadiene rubber (NBR) for enhanced oil resistance and reinforced with carbon black. Hardness: 72–80 Shore A. Available in 5mm, 8mm, and 10mm thicknesses. Provides effective load cushioning and noise reduction.
Rail Clamping Plate — Cast from QT400‑18 ductile iron (hot‑dip galvanized, tensile strength ≥400 MPa, elongation ≥18%). Features an arc‑shaped design that precisely matches the QU‑series rail base profile, minimizing stress concentration under heavy‑duty applications.
Thermite Welding Kit for QU Rails — Glory Rail supplies a complete thermite welding system purpose‑built for crane rail installation. Our solution utilizes an exothermic reaction between aluminum and iron oxide to form high‑strength, fatigue‑resistant joints. With reaction temperatures reaching ≥2500°C and weld strength exceeding 95% of the base rail’s tensile strength [10+L9-L10]. No external power source is required, enabling rapid field installation — the preferred jointing method for heavy‑duty crane runways.
System Integration Notes:
For an optimally performing QU120 runway system, we recommend matching the rail clip selection (welded vs. bolted) to your specific support beam configuration, and pairing the rubber pad thickness with your anticipated crane duty cycle and wheel load conditions. Full torque specifications and installation guides are available upon request.
Quality Assurance & Inspection
All QU series crane rails (QU70, QU80, QU100, QU120) are manufactured to YB/T 5055-2025, using high-strength carbon‑manganese steels such as U71Mn (≥880 MPa tensile strength) or U75V (≥980 MPa tensile strength).
Each rail undergoes the following inspections:
Ultrasonic testing (UT) – according to GB/T 4162
Magnetic particle inspection (MPI) – according to GB/T 15822 series
Dimensional and visual check – straightness tolerances per YB/T 5055
Mill Test Certificate EN 10204 Type 3.1 (manufacturer‘s inspection, no third‑party witness) or Type 3.2 (with third‑party witnessing upon agreement) is available.
Full traceability is ensured by heat/ladle number stamped on each rail end, linking back to the melt and rolling batch.
Third‑party inspection (SGS, BV, TUV) is welcome at any production stage, subject to prior agreement on inspection scope and standards.
Global Shipping & Logistics: Your Partner in Reliable QU Crane Rail Delivery
In Glory Rail, shipments of crane rails are coordinated through established logistics networks to ensure timely delivery to major ports worldwide, supported by flexible transport arrangements tailored to project schedules.
We ship crane rails from China to major industrial ports worldwide, including Rotterdam, Hamburg, Singapore, and other global terminals, via sea, air, or multimodal transport.
Seaworthy Packaging: Rails are coated for corrosion protection and secured with waterproof wrapping and steel strapping for ocean transport stability. Small components such as clamps and bolts are packed separately with reinforced protection.
Supply Chain & Custom Production: With over 20 years of export experience, Glory Rail works with leading steel mills such as Ansteel and Baowu Group, supporting customized rail production including length adjustment and drilling, with direct factory-to-port shipment.
Other Crane Rail for Sale
- DIN536 crane rail: A45, A55, A65, A75, A100, A120, A150.
- ASTM759 crane rail: CR104, CR105, CR135, CR171, CR175.
- ISCR crane rail: ISCR50, ISCR60, ISCR70, ISCR80, ISCR100, ISCR120.
- JIS crane rail: CR73, CR100.
Glory Rail is a professional supplier of railroad tracks and crane rails in China, serving customers both domestically and internationally. We offer a comprehensive range of rail products, including QU70 and A100 crane rails, 90 lbs rails, ASCE rails, 115RE and 136RE rails, as well as UIC and BS rails, all of which are widely recognized in global markets. In addition, we supply railway fasteners and crane rail accessories tailored to customer requirements.