Compared with 60kg/m rails, 75kg/m rails have obvious differences in size: usually 60kg/m rails are about 176mm high, 150mm wide at the bottom, and 73mm wide at the head, while 75kg/m rails are about 192mm high, 165mm wide at the bottom, and 75mm wide at the head. Such structural differences not only give 75kg rails a larger contact area and stronger bending resistance, but also make their contact with sleepers and fasteners more uniform, which helps to disperse the train wheel pressure load and improve the overall stability and service life of the track.
In terms of theoretical mass, the nominal weight of 60kg/m rails is about 60kg/m, while that of 75kg/m rails is 75kg/m. The increase in weight means that 75kg rails are significantly better than 60kg rails in terms of load-bearing capacity and impact resistance. Specifically, the 75kg rail can withstand heavier axle loads and impact forces due to its thicker rail head, waist and bottom plate, with less deformation and better toughness, and it shows higher reliability in heavy-duty railway lines.
| Classification | Height(mm) | Head (mm) | Bottom (mm) | Thick(mm) | Weight (kg/m) | |
| Heavy Rail | 38 KG/M | 134 | 68 | 114 | 13 | 38.733 |
| 43 KG/M | 140 | 70 | 114 | 14.5 | 44.653 | |
| 45 KG/M | 145 | 67 | 126 | 14.5 | 45.546 | |
| 50 KG/M | 152 | 70 | 132 | 15.5 | 51.514 | |
| 60 KG/M | 176 | 73 | 150 | 16.5 | 60.64 | |
From the perspective of wear resistance, the 75kg/m rail has a slightly larger head width and higher quality, which makes the wheel-rail contact area larger and the pressure per unit area relatively lower. Therefore, it has better wear resistance in long-term operation, reduces rail head wear and gear tooth depression, thereby extending the rail replacement cycle and reducing maintenance costs.
From the perspective of application scenarios, 60kg/m rails are often used in national trunk railways, busy freight lines and some high-speed railway projects due to their high cost-effectiveness, which can meet the needs of most high-speed and heavy-duty railways; while 75kg/m rails are more used in super-heavy-duty railways, large-scale freight lines and large-scale mining railways, especially for high-load, high-strength personalized track engineering projects.
As a professional railway rail and fastener supplier, GNEE RAIL has rich production and export experience. During the rail production process, we strictly follow the standards of GB/T 2344, TB/T 3276, and use high-performance steel grades such as U71Mn or U75V. GNEE RAIL has a complete quality control process, from chemical composition inspection, mechanical property testing to dimensional accuracy verification, to ensure that the products have high strength, high toughness, excellent wear resistance and stable structure.In addition to 60KG and 75KG heavy rails, we also provide:
| Classification | Height(mm) | Head (mm) | Bottom (mm) | Thick(mm) | Weight (kg/m) | |
| Light Rail | 8 KG/M | 65 | 25 | 54 | 7 | 8.42 |
| 9 KG/M | 63.5 | 32.1 | 63.5 | 5.9 | 8.94 | |
| 12 KG/M | 69.85 | 38.1 | 69.85 | 7.54 | 12.2 | |
| 15 KG/M | 79.37 | 42.86 | 79.37 | 8.33 | 15.2 | |
| 18 KG/M | 80 | 40 | 80 | 10 | 18.06 | |
| 22 KG/M | 93.66 | 50.8 | 93.66 | 10.72 | 22.3 | |
| 24 KG/M | 107 | 51 | 90 | 10.9 | 24.46 | |
| 30 KG/M | 107.95 | 60.33 | 107.95 | 12.3 | 30.1 | |
| Crance Rail | QU 70 | 120 | 70 | 120 | 28 | 52.8 |
| QU 80 | 130 | 80 | 130 | 32 | 63.69 | |
| QU 100 | 150 | 100 | 150 | 38 | 88.96 | |
| QU 120 | 170 | 120 | 170 | 44 | 118.1 | |
In addition, GNEE RAIL can also provide a complete rail system supporting solution, including rail fasteners, gauge blocks, elastic pads, fishplates and rail bolts. At the same time, if you have special customized requirements, please feel free to contact us.
If you are considering choosing 60kg/m or 75kg/m rails for new rail engineering projects, or need to compare the performance advantages of different models in your project requirements, please contact GNEE RAIL for technical exchanges, sample trials and detailed quotations.