What is the standard size of a rail?
Jan 19, 2026
Steel rail, we also called the railway track, it is crucial to the steel railing system. As a rail component of the railway system, steel rail guides the train forward and bears the enormous pressure. Meanwhile, the steel rails convey the pressure to the railway sleepers. So steel rails play a big role in the railway system and the quality of the steel rails is much important.
What is the standard size of a rail?
A steel rail is a hot-rolled steel profile with a head, web, and base, designed to guide train or vehicle wheels and transfer loads to sleepers and the track foundation. Unlike general steel sections, rail profiles are engineered to resist high contact stress, bending fatigue, and wear, which is why rail "size" is not a single universal dimension but a combination of weight, height, head width, and base width, defined by different international standards. In global projects, the so-called "standard size of a rail" usually refers to several widely adopted profiles rather than one fixed dimension.
As a supplier serving international railway, metro, mining, port, and crane projects, GNEE RAIL provides steel rails in multiple standard sizes under UIC, EN, AREMA, DIN, JIS, and GB standards, and also supplies matching rail fasteners, baseplates, rail pads, fishplates, and customized machining services.
Is There One Universal Standard Size for Steel Rails?
There is no single global standard size for steel rails. Instead, each standard system defines several commonly used profiles based on operating speed, axle load, and traffic density.
Typical Mainline Rail Sizes by International Standards:
| Standard | Rail Profile | Height (mm) | Head Width (mm) | Base Width (mm) | Weight (kg/m) |
|---|---|---|---|---|---|
| UIC 860 | UIC54 | 159 | 70 | 125 | 54.43 |
| UIC 860 | UIC60 | 172 | 72 | 150 | 60.21 |
| EN 13674-1 | 60E1 | 172 | 72 | 150 | 60.21 |
| AREMA | 115RE | 168 | 72 | 140 | 56.9 |
| AREMA | 136RE | 184 | 74 | 152 | 67.4 |
| JIS E 1101 | 50N | 153 | 65 | 127 | 50.4 |
| JIS E 1101 | 60 | 174 | 72 | 145 | 60.8 |
| GB 2585 | 60kg | 176 | 73 | 150 | 60.64 |
From an engineering perspective, UIC60 / EN 60E1 / GB 60kg are often treated as the closest thing to a global "standard size" for heavy passenger and freight lines.
What Are the Standard Sizes for Light Rails and Industrial Tracks?
For mining railways, factories, yards, and temporary tracks, light steel rails are commonly used. These rails are smaller in section and lighter in weight, making installation easier and reducing project cost.
GB/T Light Rail Standard Sizes (Mining & Industrial Use):
| Rail Type | Height (mm) | Head Width (mm) | Base Width (mm) | Weight (kg/m) |
|---|---|---|---|---|
| 12 kg | 69.9 | 38.1 | 69.9 | 12.2 |
| 15 kg | 79.4 | 42.9 | 79.4 | 15.2 |
| 18 kg | 90 | 40 | 80 | 18.06 |
| 22 kg | 93.7 | 50.8 | 93.7 | 22.3 |
| 24 kg | 107 | 51 | 92 | 24.46 |
| 30 kg | 108 | 60.3 | 108 | 30.1 |
These sizes are widely used in underground mines, industrial transport systems, and port internal logistics lines. For export projects, GNEE RAIL also supplies equivalent profiles under JIS, DIN, and AREMA AS standards, and supports interchangeability checks between standards when replacing existing rails.
Are Crane Rails a Different "Standard Size" Category?
Yes. Crane rails are a separate category with much larger head widths and higher section modulus, designed for high wheel loads and strong lateral forces from gantry cranes and overhead cranes. Their dimensions are very different from railway rails.
Typical Crane Rail Sizes (GB and DIN Standards):
| Standard | Profile | Height (mm) | Head Width (mm) | Weight (kg/m) |
|---|---|---|---|---|
| GB/T 11264 | QU70 | 120 | 70 | 52.8 |
| GB/T 11264 | QU80 | 130 | 80 | 63.69 |
| GB/T 11264 | QU100 | 150 | 100 | 88.96 |
| DIN 536 | A75 | 100 | 75 | 56.2 |
| DIN 536 | A100 | 120 | 100 | 74.3 |
| DIN 536 | A120 | 140 | 120 | 100.2 |
Crane rails may exceed 100 kg per meter, far heavier than most railway rails, and require dedicated fastening systems, baseplates, and alignment control. GNEE RAIL supplies complete crane rail systems, including clips, rubber pads, anchor bolts, and installation technical guidance.
There is no single standard size of a rail worldwide. Instead, globally accepted standard profiles such as UIC60, EN 60E1, AREMA 115RE/136RE, JIS 50N/60, and GB 60kg serve as mainline railway standards, while GB/T 22kg, 24kg, 30kg and similar profiles are standard for mining and industrial tracks, and QU and DIN A-series profiles are standard for crane rails.
Since 2008, GNEE RAIL has been supplying steel rails of different grades for more than 18 years, steel rails from GNEE is highly recommened in China and abroad.Wtih cutting edge equipment, GNEE produces high quality steel rails that meet with requirements of most countries. Standard rail, head hardened rail, heavy rail,light rail,crane rail and other types are all available here, as one of the China main rail supplier, GNEE RAIL has been working on supplying economical green railway products all over the world.
