75kg Rail
Product Overview
Gloryrail’s 75kg heavy rail is engineered to the highest standards of GB/T 2585-2017, delivering unparalleled performance for ultra-heavy haulage, high-speed freight corridors, and extreme industrial applications. With a robust cross-section (192mm height, 150mm base width) and theoretical weight of 74.41kg/m, making it ideal for mining, port logistics, and national mainline railways.
Key features
GB Heavy Rail Standard Compliance
Dimensional Precision:
Rail height: 192mm (±0.8mm); base width: 150mm (±1.2mm)
Web thickness: 20.0mm (±0.8mm); length tolerance for fixed lengths: ±25mm
Bolt hole positioning accuracy ≤0.5mm, compatible with international accessories (fishplates, fasteners).
Surface & Mechanical Quality:
Hot-rolled surface with hardness uniformity on the rail head tread ≤5HBW.
Compliance with GB/T 2585-2017 for impact resistance, wear resistance, and dimensional stability under cyclic loading.
Premium Material Performance
U71Mn High-Carbon Steel (Standard)
Tensile strength ≥880MPa; Brinell hardness 260–300HBW
Suitable for mainline railways with axle loads ≤35 tons, offering balanced strength.
Advanced Surface & Structural Treatments
Full-Head Induction Quenching (Standard for Custom Rails)
Forms a wear-resistant hardened layer (depth ≥30mm) with hardness ≥380HBW in the rail head, extending service life in high-traffic scenarios.
Multi-Layer Anti-Corrosion Coating(Optional)
Applications
Heavy Haul Railway Networks
Large-Scale Mining Operations
Iron Ore Transport:
U75V rails in 75kg endure abrasive ore particles, extending service life.
Coal Mine Main Haulage:
Wide base design reduces track subsidence in soft ground, ensuring stable operation for trains.
Ports & Industrial Heavy Rail
Container Terminal Rail Systems
Specialized High-Performance Railways
High-Acceleration Urban Transit：
Quenched rail heads absorb dynamic loads from frequent starts/stops, improving ride comfort and reducing noise.
Military Heavy-Duty Lines:
Customized bolt hole spacing for rapid deployment, supporting 60-ton armored vehicle movements with stress-distribution optimization.
Technical Advantages
Longevity & Low Total Cost of Ownership
Service Life:
U71Mn: Maintenance costs reduced, minimize rail wear.
Sustainable Manufacturing
Energy-Efficient Production
Short-process technology reduces coal consumption compared to traditional methods.
Material Composition:
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| 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 | |||||
Why Choose Gloryrail?
As a leading Supplier in China, we use localized manufacturing expertise to offer competitive pricing and rapid delivery. Our GB 75kg rail is trusted globally for its consistent quality, safety, and we have more than 15 years experience focused on steel rails.
Explore our full range of steel rails solutions and request a quote today. Partner with us for reliable, high-performance rails that drive efficiency in your operations.