In the GB standard light rail system, 8KG light rail and 30KG light rail are used in different scenarios due to their respective characteristics.
From the specification parameters, the 8KG light rail has a rail height of 65mm, a bottom width of 54mm, a head width of 25mm, a waist thickness of 7.0mm, and a theoretical weight of 8.42kg/m . The 30KG light rail has a rail height of 107.95mm, a bottom width of 107.95mm, a head width of 60.33mm, a waist thickness of 12.3mm, and a theoretical weight of 30.1kg/m . Obviously, the 30KG light rail is larger and heavier, which means that its structural strength and stability are better.
| Rail Type | SIZE(mm) | theoretical weight | |||||||||
| height | bottom width | head width | waist depth | ||||||||
| Light rail | 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 | 90 | 40 | 10 | 18.06 | ||||||
| 22KG | 93.66 | 93.66 | 50.8 | 10.72 | 22.3 | ||||||
| 24KG | 107 | 90 | 51 | 10.9 | 24.46 | ||||||
| 30KG | 107.95 | 109.95 | 60.33 | 12.3 | 30.1 | ||||||
In terms of material, both commonly use Q235B ordinary carbon structural steel. However, because the application scenario of the 30KG light rail has higher strength requirements, some will use 55Q material, which has better hardness and wear resistance than Q235B.
| Q235B | 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 | 0.04 | 0.04 | ||||
In terms of cost, 8KG light rail uses less materials, has a relatively simple production process, and is affordable. It has significant advantages in cost-sensitive and lightweight transportation scenarios. For example, for material transportation within a small factory, laying 8KG light rail can save a lot of money. Although the 30KG light rail has a high cost, it has good overall performance and is cost-effective for long-term use. It is suitable for heavy-load and high-frequency transportation scenarios.
There are also differences in application scenarios. 8KG light rail is mostly used for temporary transportation routes in forest areas and mining areas, material transportation on small construction sites, and light transportation within small factories and amusement parks. 30KG light rail is mainly used in urban light rail transportation, large-scale ore transportation in mines, heavy-load material transportation on industrial production lines, and other scenarios that require high track carrying capacity and stability.