Gnee produces high quality GB standard heavy haul rails. Our heavy rails are made of U71Mn, U75V, 50Mn grades, designed to withstand extreme loads and high-speed operation, with unparalleled durability and precision. Models are available from 30-60kg/m, suitable for various types of railways such as conventional mainline railways, subways, heavy-load freight lines, railway turnout areas, etc.
Gnee’s annual export volume of heavy haul railway exceeds 100,000 tons, and is widely exported to countries such as Vietnam, Indonesia, Pakistan, Uzbekistan, etc. Our heavy duty rail tracks comply with GB/T 2585 standards and ISO certification, ensuring seamless integration into existing railway systems, providing standardized solutions for global railway infrastructure needs.
| Specifications | 30kg, 38kg, 43kg, 50kg, 60kg, etc |
|---|---|
| Materials | U71Mn, U75V, 50Mn, U71MnSiCu |
| Standard | GB11264-89, GB2585-2007, YB/T5055-93 |
| Length | 6m-12m 12.5m-25m |
Gnee’s high quality heavy rail on sale (GB standard):
Model | Section size (mm) | Section size(x.1) | Typical length(n) | Theoretical weight(kz/m) | Material | |||
Rail height | Base width | Head width | Web thickness | |||||
38kg | 134 | 114 | 68 | 13.0 | 49.5 | 12.5 | 38.733 | 50MN U71MN U75V
|
43kg | 140 | 114 | 70 | 14.5 | 57.0 | 12.5 | 44.653 | |
50kg | 152 | 132 | 70 | 15.5 | 65.8 | 12.5 | 51.514 | |
60kg | 176 | 150 | 73 | 16.5 | 77.45 | 12.5 | 60.48 | |
Heavy haul rails are rails designed for heavy-load railways with axle weights above 25 tons. China’s first “online residual heat quenching + offline full-length heat treatment” process achieves a rail head hardness of 260-300HBW (uniformity ±15HBW), which is 40% more wear-resistant than traditional processes.
As professional steel rail manufacturer, Gnee not only provides heavy haul rail tracks, but also light rails and crane tracks, with models including 8kg/m, 12kg/m, 15kg/m, 18kg/m, 22kg/m, 24kg/m, 30kg/m, 38kg/m, 43kg/m, 50kg/m, 60kg/m, 70kg/m, 80kg/m, 100kg/m, 120kg/m.
Our GB heavy duty steel rails follow the strict GB 2585-2017 standard and have 5 weight categories to meet different operational needs:
| Dimension | U71Mn | U75V | 50Mn |
| Chemical Composition (%) | C:0.67-0.75 Mn:1.1-1.5 Si≤0.5 (Medium-Carbon Manganese Steel) | C:0.72-0.80 Mn:0.6-1.0 V:0.04-0.12 (Vanadium Microalloyed) | C:0.48-0.56 Mn:0.7-1.0 Si≤0.4 (Medium-Carbon High-Manganese) |
| Heat Treatment | Offline Full-Length Quenching (Hardness Uniformity ±15HBW) | Online residual heat quenching + offline tempering (vanadium grain refinement) | Normalizing (Retained Toughness) |
| Mechanical Properties | Yield ≥880MPa Tensile ≥1180MPa -20℃ Impact ≥180J | Yield ≥980MPa Tensile ≥1250MPa -40℃ Impact ≥230J | Yield ≥780MPa Tensile ≥980MPa 20℃ Impact ≥200J |
| Hardness (HBW) | Head 260-300 (Uniformity ±15) | Head 330-370 (Quenched Layer Depth 12mm) | Head 240-270 (Best Compatibility with Old Rails) |
| Elongation (%) | ≥10 | ≥9 | ≥12 |
| Wear Resistance | Wear Rate 0.18mm/year (30t Axle Load) | Wear Rate 0.12mm/year (30t Axle Load) | Wear Rate 0.22mm/year (25t Axle Load) |
| Fatigue Life (10⁴ Cycles) | 800 (30t Axle Load, EN 13674 Equivalent) | 1200 (30t Axle Load) | 600 (25t Axle Load, Adequate for Retrofits) |
| Weldability | Preheating 200℃ Required, Weld Hardness ≥240HBW (CRCC Certified) | Preheating 250℃ Required, -40℃ Weld Impact ≥180J (Cold-Resistant Welding) | No Preheating Needed, Weld Elongation ≥8% (Convenient Retrofit) |
| Typical Sizes (kg/m) | 60, 75 (Standard Gauge) | 60, 75 (Cold-Resistant Custom) | 50, 60 (Old Rail Replacement) |
| Core Advantages |
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| Specifications | 30kg, 38kg, 43kg, 50kg, 60kg, etc |
|---|---|
| Materials | U71Mn, U75V, 50Mn, U71MnSiCu |
| Standard | GB11264-89, GB2585-2007, YB/T5055-93 |
| Length | 6m-12m 12.5m-25m |
Gnee provide heavy duty rail to global with competitive price.
If you are unsure about how to choose heavy-duty rail tracks, here are some tips or contact us directly.
Gnee’s upgraded universal rolling production line has officially commenced operation. Its main production equipment and technologies are world-class, offering strong rolling capacity and a wide range of products. In 2017, we added a full-length online heat-treated rail production line, enabling mass production.
Provide all kinds of billet with stable composition, high steel purity, and excellent surface quality for rail and section steel products
Basic oxygen steelmaking, combined with LF and RH external refining,
making the quality of molten steel fully meet the demand of all kinds of rail steels.
The content of H is stably controlled below 2ppm, and the content of O
is stably controlled below 20ppm.
There is a bloom caster with the highest automation and technology in
the international steel industry.
Rolling quality and precision of rail and section steel products is greatly improved due to heat homogeneity of steel billet
Step heating ensures that the steel billet is the same.
The depth of surface decarburization layer is stably controlled below 0.3mm.
Provide high precision intermediate billet for universal rolling mill.
The high pressure water descaling device removes primary iron
scale effectively.
The new generation of billet rolling mill with high stiffness, hydraulic balance and axial adjustment functions.
Roll gap adjustment accuracy 0.25mm
Produce rail and section steel with high quality
The high pressure water descaling device removes the secondary iron
scale before the rail enters the universal rolling mill.
Advanced universal mill is used in the world.
Compact and closed rolling arch technology, equipped with automatic roll gap control system, can achieve accurate setting of roll gap, to guarantee the dimensional accuracy of rail section. The height fluctuation of 100 meter rail shall be controlled within 0.2mm.
Improving the comprehensive performance of rail
Heat treatment equipment and technology can meet heat treatment demand of different profiles and grades, and the heat treated rail has stable and well-distributed comprehensive performance. The hardness fluctuation of 100 meter heat treated rail shall be controlled within 5HB.
Endorse for every high quality rail
Print a set of strings of symbols and numbers on both sides of the waist of every rail, displaying information such as specification, brand, furnace number and date.
Ensure that internal and external quality of rail meets the standard requirements
Testing means such as surface eddy current testing, ultrasonic testing, and laser fatness detection are used to carry out comprehensive automatic detection on surface quality, internal quality and bending condition of rail.
Issue factory certificate for rail and section steel products
The highly informationized and integrated sample processing machine tool, robot, tensile test machine, automatic hardness tester, metallographic microscope and other corresponding equipment have reached the worlds leading level, which ensures that all project inspection of rail is completed in time.
The vehicles chosen conform to the relevant regulations of the state road transport management
As a world-leading manufacturer of rail fastener systems, Gnee Rail Fasteners has 18 years of professional experience, an annual production capacity of 10 million sets, and its products are exported to more than 60 countries. We have built 5 production bases, equipped with 400 technicians, and annual R&D investment exceeds 5% of revenue.
Our products have been used in more than 2,000 railway projects, with a total of 50,000 kilometers of track laid, covering more than 100 high-speed rail projects. From -40℃ to 80℃, the product performance remains stable and reliable. With strict quality control and professional technical support, more than 85% of our customers maintain long-term cooperation with us, and customer satisfaction continues to remain above 93 points.
