43kg Rail
Product Overview
Gloryrail strictly complies with GB/T 2585-2017 Hot-Rolled Rails for Railway Applications to deliver high-performance 43kg heavy rails, engineered for global heavy-haul transportation. As a core material for mainline railways, heavy freight lines, and industrial railways, this rail features an optimized cross-section (140mm height, 114mm base width) via hot-rolling and optional heat treatment, ensuring exceptional resistance to bending and fatigue. With a theoretical weight of 44.653kg/m and standard lengths of 6/24 meters (customizable).
Key features
GB Heavy Rail Standard Compliance
Rail height tolerance: ±0.6mm; length tolerance: ±20mm (fixed length)
Bolt hole positioning accuracy: ≤0.5mm for seamless compatibility with national railway accessories (fishplates, fasteners).
Defect-free surface (no cracks/folds); hardness uniformity on the rail head tread ≤5HBW, satisfying wheel-rail contact mechanics for heavy freight.
Material Performance
U71Mn High-Carbon Steel (Standard)
Tensile strength ≥880MPa; Brinell hardness 260–300HBW
Suitable for mainline railways with axle loads ≤30 tons (e.g., freight dedicated lines, mixed passenger-freight lines)
Normalized to refine pearlitic structure, improving fatigue crack resistance by 20% vs. common carbon steel.
Surface Strengthening Treatment
Rail Head Quenching (Optional)
Induction heating quenching forms a wear-resistant hardened layer (depth ≥15mm) with hardness ≥330HBW in the top 30mm of the rail head, extending service life.
Anti-Corrosion Coating
Applications
Heavy-Haul Mine Dedicated Lines
Open-Pit Mine Transport : iron ore powder transport.
Underground Mine Main Roads, Quenched rail heads resist wheel wear, extending maintenance cycles from 6 months to 1 year.
Ports & Logistics
Port Rail Loading/Unloading Lines: Galvanized rails last ≥10 years, doubling service life vs. untreated rails.
Logistics Park Heavy-Duty Channels: Supports 40-ton forklift frequent turning, with hardened rail heads reducing metal crushing deformation.
Industrial & Special Railways
Dedicated Lines: Custom dense bolt holes enable rapid laying/removal for emergency transport.
Technical Advantages
Cost-Effective Heavy-Haul Solution
lower cost than equivalent UIC 54 heavy rails.
Global Compatibility
Cross-sectional dimensions compatible with UIC 54.
Longevity & Low Maintenance
Service life: ≥10 years for U71Mn under 25-ton axle load annual traffic, reducing lifecycle maintenance cost by 30%.
Material Composition:
…………………………………………………………………………………………………| 50Mn | 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 | ≤ | ≤ | ≤ | ≤ | ≤ | ||||
| ≥390 | ≥40 | ≥645 | ≥66 | 13% | 0.48-0.56 | 0.17-0.37 | 0.70-1.00 | 0.035 | 0.035 | 0.25 | 0.25 | 0.25 | ||
| 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 Us?
As a leading Supplier in China, we use localized manufacturing expertise to offer competitive pricing and rapid delivery. Our GB heavy 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.