Steel rail
Steel rail, also called rail track, or steel track, is the main component of railway track. Its function is to guide the wheels of the locomotive, bear the great pressure of the wheel, and keep the stability of railway transportation. The rail must provide continuous, smooth and minimum rolling surfaces for the wheels. In an electrified railway or automatic block section, rail can also be used as an orbital circuit.
The steel rail in China is divided into Crane rail, Heavy rail and light rail.
Light rail is divided into GB and the ministry standard (YB metallurgical standard). There are 8kg, 12kg, 15kg, 18kg, 22kg, 24kg, 30kg.
In the international Market, it is called P8 Steel rail, P12 steel rail, P15 steel rail, P18 steel rail, P22 steel rail, P24 steel rail, and P30 steel rail.
The light rail is mainly used for the laying of temporary transportation lines and light locomotive lines for forest areas, mining areas, factories and construction sites.
The reliability of a rail system depends heavily on the manufacturing quality of its rails. GB Standard 30KG Light Steel Rail is produced through a controlled process designed to ensure dimensional accuracy, mechanical strength, and consistent performance.
Manufacturing Process Overview
Production begins with qualified steel billets that meet GB chemical composition requirements. These billets are hot-rolled into precise rail profiles, followed by controlled cooling and mechanical straightening to eliminate internal stress.
Dimensional Tolerance and Inspection Standards
| Inspection Item | Requirement |
|---|---|
| Weight Deviation | ±2% |
| Length Tolerance | ±5 mm |
| Straightness | ≤1/1000 |
| Surface Quality | Free from critical defects |
Mechanical Testing Standards
| Test Item | Requirement |
|---|---|
| Tensile Test | Passed |
| Hardness Test | Within specified range |
| Visual Inspection | 100% |
Strict quality control ensures consistent performance across all delivered rails.
GNEE STEEL applies comprehensive inspection and testing procedures to every batch of GB Standard 30kg light steel rails, providing full mill test certificates and optional third-party inspections.
📨 Reach out to GNEE STEEL for technical documentation and quotations.
| Size
* |
Rail height(mm)
A |
Bottom Width(mm)
B |
Head Width(mm)
C |
Web Thickness(mm)
t |
Weight(kg/m)
* |
| 8kg | 65 | 54 | 25 | 7 | 8.42 |
| 9kg | 63.5 | 63.5 | 32.1 | 5.9 | 8.94 |
| 12kg | 69.85 | 69.85 | 38.1 | 7.54 | 12.2 |
| 15kg | 79.37 | 79.37 | 42.86 | 8.33 | 15.2 |
| 18kg | 90 | 80 | 40 | 10 | 18.06 |
| 22kg | 93.66 | 93.66 | 50.8 | 10.72 | 22.3 |
| 24kg | 107 | 92 | 51 | 10.9 | 24.46 |
| 30kg | 107.95 | 107.95 | 60.33 | 12.3 | 30.1 |
