What Is 30kg rail?
The term 30kg rail refers to a rail section with a nominal weight of approximately 30 kilograms per meter. Compared with lighter options such as 18kg or 24kg rails, the 30kg light steel rail offers significantly improved load-bearing capacity and structural stiffness, while still maintaining reasonable installation efficiency and cost control. Manufactured in accordance with Chinese GB railway standards, this rail type ensures consistent dimensions, stable mechanical properties, and reliable compatibility with standard railway fasteners.
Selecting the correct rail specification is only the first step toward a reliable rail system. Proper installation and system matching are equally important. GB Standard 30kg light steel rail is designed to simplify installation while delivering stable long-term performance.
Specification of 30kg rail
Size: 30kg/m
Length: 5-12m or other length according to customers' requirement
Material: Q235B, 55Q
Standard: GB/T11264-2012
| Q235 | Mechanical property | Chemical composition(%) | |||||||||
| Yield strength | Tensile strength | Elongation | Hardness | C | Si | Mn | S | P | |||
| MPa
≥ |
kg/mm²
≥ |
MPa | kg/mm² | min | HB | ≤ | ≤ | ≤ | |||
| 235 | 24 | 375-460 | 38-47 | 26% | 0.12-0.22 | 0.35 | 0.30-0.70 | 0.045 | 0.045 | ||
| 55Q | Mechanical property | Chemical composition(%) | |||||||||
| Yield strength | Tensile strength | Elongation | Hardness | C | Si | Mn | S | P | |||
| MPa
≥ |
kg/mm²
≥ |
MPa
≥ |
kg/mm²
≥ |
min | HBW
≥ |
≤ | ≤ | ||||
| 685 | 69 | 197 | 0.50-0.60 | 0.15-0.35 | 0.60-0.90 | 0.040 | 0.040 | ||||
Selection Criteria for 30KG Rail
| Application Scenario | Recommended Rail |
|---|---|
| Light-duty transport | 18–24 kg |
| Medium-load industrial & mining railways | 30 kg |
| Heavy-duty rail lines | ≥38 kg |
The 30kg rail is particularly suitable where higher stiffness and durability are required without excessive cost.
Installation Compatibility and Accessories
| Component | Compatibility |
|---|---|
| Rail Fasteners | GB standard clips and bolts |
| Joint Bars | Standard fishplates |
| Sleepers | Steel or concrete |
| Welding | Field welding applicable |
Proper installation ensures smooth operation, reduced vibration, and extended service life.
Lifecycle Cost Advantages
| Rail Weight | Initial Cost | Maintenance | Overall Value |
|---|---|---|---|
| 24 kg | Lower | Higher | Moderate |
| 30 kg | Moderate | Low | High |
| 38 kg | High | Moderate | Moderate |
With years of experience supplying GB Standard 30kg light steel rails, GNEE STEEL provides not only high-quality products but also professional guidance on rail selection, installation, and system integration. We offer a complete range of railway materials to ensure reliable, long-term performance.
🚀 Contact GNEE STEEL today to receive expert advice and a tailored quotation for your project.
| 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 |
