Products Description
43kg heavy steel rails are a type of high-strength, high-load-capacity rails that are widely used in heavy-duty rails, high-speed rails, long-distance passenger rails, and other fields. Due to the weight of 43kg rails, the cost of transportation and installation is relatively high. In remote areas or places where railway construction is difficult, transportation may encounter certain challenges.
43kg steel rails have a long service life, but under high-load operating conditions, regular inspections and replacements may be required to ensure the safety of the rails. Maintenance work may require a high investment.
Compared with light rails, 43kg rails are heavier, and the difficulty of installation and maintenance will also increase, especially in large projects, which may require more equipment and manpower support.
Heavy Duty Steel Rail 43kg
| Parameters | |||
| type | weight (kg/m) | material | length (m) |
| 43kg | 44.653 | U71Mn | 12m/12.5m |
| rail height (mm) | bottom width (mm) | head width (mm) | web thickness (mm) |
| 140 | 114 | 70 | 14.5 |

Heavy Steel Rail
| Heavy Steel Rail | Size | Rail Height | Bottom Width | Head Width | Web Thickness | Weightkg/m |
| 38kg | 134 | 114 | 68 | 13 | 38.733 | |
| 43kg | 140 | 114 | 70 | 14.5 | 44.653 | |
| 50kg | 152 | 132 | 70 | 15.5 | 51.514 | |
| 60kg | 176 | 150 | 73 | 16.5 | 60.8 | |
| 75kg | 192 | 150 | 75 | 20 | 74.64 |

Other Features
Advantages
High load-bearing capacity:
43kg rails have a strong load-bearing capacity and are suitable for railway systems that transport heavy goods. It can withstand the greater pressure when the train passes, reducing the deformation and damage of the track.
Durability:
43kg rails are made of high-strength steel and have good wear resistance and corrosion resistance after special heat treatment, and can maintain their good performance in long-term operation.
Stability:
Due to its large weight and strength, 43kg rails can provide high stability and are particularly suitable for railway lines with frequent train operations. It can effectively disperse the vibration generated by the train running and maintain the stability of the track.
Wide range of application:
43kg rails are suitable for various types of railway systems, including heavy-duty railways, high-speed railways and long-distance passenger railways, etc., and can meet the needs of different railway projects.
| 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 | 0.03 | 0.03 | 0.25 | |||||||


FAQ
1. What is the service life of rails?
Answer: Under normal conditions, the service life is about 15-20 years (such as 50kg/m rails), depending on the load frequency and maintenance conditions.
2. Do you accept payment by letter of credit?
Answer: We support payment methods such as TT (30% deposit + 70% see bill of lading), LC sight/forward letter of credit.
3. How to deal with rust problems during transportation?
Answer: Apply anti-rust oil when packaging. It is recommended to use dry containers and add moisture-proof agents for sea transportation.
4. Do you provide welding services?
Answer: We can provide factory-side flash butt welding (welding process requirements must be provided), or deliver unwelded rails.



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