What is the price per metric tonne of GB standard QU120 crane rail?
GB standard QU120 crane rail weighs 118.1 kg/m and is designed specifically for heavy-duty overhead travelling (EOT) cranes, STS container cranes, shipyard gantry cranes, and metallurgical ladle cranes operating with wheel loads between 400 kN and 800 kN.
The benchmark FOB export price for U71Mn QU120 crane rail typically ranges from USD 780 to USD 960 per metric tonne (FOB Chinese main port). The precise spot price per metric tonne fluctuates based on steel billet costs, steel grade selection (U71Mn vs. U75V), custom fabrication requirements (drilling, miter cutting, heat-straightening), and total order tonnage.
GNEE RAILWAY RAILWAY supplies GB-standard QU120 crane rails in U71Mn and other available grades, with options for custom lengths, drilling, cutting, beveling, and material certification. We support bulk orders and overseas crane runway projects with specification confirmation and export-ready supply.
QU120 Crane Rail Technical Specifications & Dimensions
QU120 is manufactured in strict compliance with YB/T 5055-2014 (superseding GB/T 3426-82). Its wide, flat head and reinforced web resist high horizontal lateral thrusts and deep cyclic contact stress.
| Parameter | Nominal Specification | Permissible Tolerance |
| Standard | YB/T 5055-2014 / GB/T 3426-82 | - |
| Theoretical Weight | 118.1 kg/m | ±1.5% |
| Rail Height (HH) | 170 mm | ±1.0 mm |
| Bottom Width (BB) | 170 mm | ±1.5 mm |
| Head Width (AA) | 120 mm | ±1.0 mm |
| Web Thickness (dd) | 44 mm | ±1.5 mm |
| Standard Delivery Lengths | 9.0 m, 9.5 m, 10.0 m, 10.5 m, 11.0 m, 11.5 m, 12.0 m | ±50 mm |
| Custom Lengths | Up to 18.0 m upon mill schedule | Cut to exact customer drawing |
Material Grade Properties: U71Mn vs. U75V
The QU120 rail price varies by steel grade, as U71Mn and U75V differ in chemical composition, strength, hardness, and wear resistance.
| Steel Grade | C(%) | Si | Mn | Cr | V | P | S | Tensile Strength (Rm/MPa) |
| U71Mn | 0.65~0.76 | 0.15~0.58 | 0.70~1.40 | – | – | ≤0.035 | ≤0.030 | ≥880 |
| U75V | 0.71~0.80 | 0.50~0.80 | 0.75~1.05 | – | 0.04~0.12 | ≤0.035 | ≤0.030 | ≥980 |
Cost Breakdown: What Determines the QU120 Rail Price per Metric Tonne?
When comparing QU120 rail quotations, buyers should consider these key cost drivers:
- Steel Raw Material: Billet and alloying material costs directly affect the mill base price.
- Order Volume: Larger quantities generally receive better pricing, while small or non-stock orders may involve additional production or handling costs.
- Secondary Processing: Drilling, cutting, beveling, and other machining requirements increase the final price depending on specifications and quantity.
- Rail Length & Logistics: Standard 12 m rails are generally easier to pack and ship, while longer or customized lengths may require special loading and transportation arrangements.
- Steel Grade: U71Mn, U75V, and other grades can have different prices due to their material and performance requirements.
GNEE RAILWAY RAILWAY supplies QU120 crane rails in U71Mn and other grades, with custom cutting, drilling, beveling, and material certification available. We provide project-based quotations based on rail grade, quantity, length, processing requirements, and delivery terms.
Frequently Asked Questions (FAQ)
What is the theoretical weight of GB standard QU120 crane rail?
The theoretical weight of QU120 rail is 118.1 kg/m, meaning approximately 8.46 m per metric tonne.
How does QU120 compare with DIN 536 A120 rail?
Both have a 120 mm head width, but their profiles differ. QU120 is 170 mm high, 170 mm base width, and 118.1 kg/m, while A120 is approximately 105 mm high, 220 mm base width, and 100 kg/m.
What is the difference between U71Mn and U75V QU120 rail?
U71Mn provides balanced strength and toughness for standard heavy-duty applications, while U75V offers higher strength and wear resistance for more demanding service conditions.
What QU120 rail length is suitable for export?
12 m is a common supply length for export. Custom lengths are available depending on project requirements and shipping conditions.
Can GNEE RAILWAY RAILWAY provide pre-drilled QU120 rails?
Yes. GNEE RAILWAY RAILWAY can provide CNC pre-drilling according to customer drawings, including specified hole diameter, spacing, and positioning.