QU70 rail is a heavy-duty crane track designed for reliable load transfer and long-term performance in industrial lifting systems. As part of the QU-series defined by YB/T 5055-2014, QU70 rail features a 70 mm rail head and a compact, reinforced cross-section that ensures stable wheel contact under repeated crane movement.
Compared with flat-bottom crane rails, the QU70 crane rail offers a thicker section, wider base contact, and a flat or slightly crowned rail head. This design improves resistance to impact, wear, and fatigue, making QU70 rail suitable for continuous-duty crane tracks operating under medium to high wheel loads.
QU70 rail is widely used in workshops, ports, steel plants, logistics yards, and other industrial environments where stable crane travel and low maintenance are critical.
QU70 rail is manufactured with controlled tolerances to ensure accurate alignment and smooth crane operation.
| Type of Rail | Standard | Dimensions mm | Steel Grade | Mass M | |||
| Height | Base Width | Head Width | Web Thickness | kg/m | |||
| QU70 RAIL | YB/T5055-2014 | 120 | 120 | 70 | 28 | U71Mn | 52.8 |
Rail Length Options：
Standard lengths: 6–12 m
Custom cut lengths available on request
Precise dimensional control helps reduce wheel wear, maintain straight crane travel, and support consistent load distribution along the crane track.
QU70 rail is typically produced from U71Mn steel, a high-strength rail material widely used in heavy-duty crane rail systems.
| 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 | 0.25 | 0.25 | 0.25 | |||||
For specific project conditions, alternative steel grades can be discussed based on load level, operating frequency, and environmental exposure.
GlorySteelWork supplies QU70 rail for both standard applications and project-specific crane track systems.
Each QU70 rail order is prepared according to project drawings and installation requirements to ensure efficient on-site assembly and long-term performance.
Looking for a reliable QU70 rail supplier for your crane project? Contact GlorySteelWork with your required rail length, quantity, and application details. Our technical team will help you select the right crane track solution and provide a tailored quotation.