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We are a professional China 50kg rail manufacturer and supplier, providing high-quality heavy-duty steel rails for railway, tramway, metro, and industrial transport systems. Our 50kg rails are engineered for strength, durability, and long service life, meeting international standards for heavy traffic and high-speed rail networks.
What Is a 50kg Rail?
A 50kg rail refers to a rail section that weighs 50 kilograms per meter. This type of rail is classified as heavy rail, suitable for high-traffic mainlines, heavy freight corridors, and metro systems. Designed to support high axle loads and long-distance transport, 50kg rails combine mechanical strength, wear resistance, and stability. It conforms to Chinese national standard GB2585‑2007 and is typically rolled from high manganese or carbon steel (50Mn, U71Mn).
China 50kg rail for sale Heavy Steel Rail
50kg rail is an important heavy rail, it have same head width with 43kg rails, but the web thickness is thicker. So it can load more.
Yongyang Rail is a professional rail supplier from China. We could supply all kinds of steel rails, and we have large stock of 50kg rail in our own warehouse.
50kg/m heavy steel rail are mostly used for the transportation of larger mine roadways and factory workshops, crane rail, and the laying of special railway lines.
50kg Rail Specification
Size: 50kg/m
Length: 12m~25m or other length according to customers’ requirement
Material: 50Mn, U71Mn
Standard: GB2585-2007
Materials:
| 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 | |||||
Heavy Rail
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Standard: GB2585-2007
| Size
* |
Rail height(mm)
A |
Bottom Width(mm)
B |
Head Width(mm)
C |
Web Thickness(mm)
t |
Weight(kg/m)
* |
| 38kg | 134 | 114 | 68 | 13.0 | 38.730 |
| 43kg | 140 | 114 | 70 | 14.5 | 44.653 |
| 50kg | 152 | 132 | 70 | 15.5 | 51.514 |
| 60kg | 176 | 150 | 73 | 16.5 | 60.640 |
| 75kg | 192 | 150 | 75 | 20 | 74.414 |
……………………………………………………………………………………………………………………………………………………………………………………………
In order to better serve the different needs of customers, our technical team is available to provide advice and support, helping every customer to optimize their rail selections to minimize life cycle costs. We supply suitable rail parts, like fish plates, rail clips, bolts and nuts. We supply rail processing, like 45 degree mitre cut, welding process, milling process, special profile processing, etc. Our engineer help customer to design railroad line according to requirements, and build mining railroad line and crane moving line. The technical support provided by Yongyang Rail can ensure that every rail we deliver provides optimum performance throughout its service life.
Key Features of China 50kg Rail
High Strength Steel – Manufactured from premium carbon or alloy steel
Durable & Wear-Resistant – Supports heavy loads and high-speed trains
Precision Rolling – Ensures uniform section and smooth surface
Standardized Dimensions – Compatible with global rail systems
Anti-Corrosion Treatment – Galvanized or coated options available
Long Service Life – Designed for decades of operation
Applications of 50kg Rails
Our 50kg rails are widely used in:
High-speed railway lines
Heavy freight rail corridors
Metro and urban transit systems
Industrial railways in ports and mines
Logistics terminals and container transport systems
Tramways and urban light rail
Frequently Asked Questions (FAQ)
What does 50kg rail mean?
It refers to a rail section that weighs 50 kilograms per meter, classified as heavy-duty rail for mainline or high-traffic applications.
Can 50kg rails be used for high-speed trains?
Yes. 50kg rails are suitable for high-speed and heavy-haul lines depending on steel grade and installation quality.
What steel grades are used for 50kg rails?
Common grades include U71Mn, R260, R350HT, or equivalents meeting UIC, DIN, or BS standards.
Can 50kg rails be customized?
Yes. Length, steel grade, heat treatment, and surface coating can all be customized for specific projects.
Do you provide rail fittings and accessories?
Yes. We supply rail fasteners, joint bars, and base plates to complete your rail installation.