Leave Your Message
-
Phone
-
E-mail
-
Whatsapp
-
WhatsApp
Engineered for SNCF-compliant installations and heavy-duty industrial rail networks across France
France boasts one of the most advanced and extensive railway networks in Europe, operated under the strict safety and quality guidelines of SNCF Réseau. With over 30,000 kilometers of tracks, including the world-renowned TGV (Train à Grande Vitesse) high-speed lines, maintaining structural integrity is paramount. Thermite welding (aluminothermic welding) remains the gold standard for creating continuous welded rails (CWR) on-site, ensuring smooth, high-speed transit and minimizing track maintenance overheads.
In addition to mainlines, major French urban centers like Paris, Lyon, Bordeaux, and Marseille are aggressively expanding their tramway and metro lines (such as the massive Grand Paris Express project). These urban transit systems require highly specialized, low-noise, and low-vibration thermite welding powders and molds. Furthermore, industrial seaports like Marseille-Fos and Haropa Port (Le Havre) rely heavily on durable crane rail joints that can withstand extreme wheel loads, demanding premium OEM thermite formulations customized for specific steel grades like R260, R320, and R350HT.
As a leading global manufacturer, RMTS addresses this demanding market by supplying certified OEM thermite welding powders and comprehensive consumables that align with European standard EN 14730-1/2, helping French contractors achieve flawless welding execution under challenging environments.
RMTS is a manufacturer specializing in railroad thermit welding materials, based in Tianjin, China. With a factory spanning 5,500+㎡ and 30+ professionals dedicated, we are committed to delivering reliable and efficient thermit welding solutions to clients across the globe. Our products are designed to meet the highest industry standards, ensuring durability and performance in various applications.
We understand that successful welding projects require not only high quality products but also expertise and knowledge. That’s why we offer comprehensive on-site training programs to help our clients master the thermit welding process, enabling them to achieve optimal results and build a strong reputation in their respective fields. Additionally, our experienced team provides project welding instruction services, offering hands-on guidance and support to ensure seamless execution, no matter where the project is located.
Driven by a customer-centric approach, RMTS is dedicated to fostering long-term partnerships by delivering exceptional products and services tailored to the unique needs of our clients. Whether you are looking for reliable thermit welding materials, expert training, or project support, RMTS is your trusted partner in achieving welding excellence.
How modern rail technology meets the stringent demands of European civil engineering
France's TGV lines require rail joints with zero tolerance for micro-defects. The high-speed impact loads require thermite portions with highly controlled chemical compositions. Our OEM thermite powder provides matching mechanical properties to the parent rail steel, mitigating wheel-rail wear at high velocities.
Urban installations like the Grand Paris Express demand low-vibration and quick-setting welds to minimize city disruption. Using pre-fabricated sand moulds and one-shot crucibles allows French transit operators to execute repairs during short nocturnal maintenance windows.
Heavy container crane tracks in Le Havre and Marseille experience extreme vertical loads. Traditional welding fails under such shear stress. RMTS provides specialized high-strength thermite portions specifically designed for thick-web crane rail profiles (e.g., A75, A100, A120).
The French market operates under strict occupational health and safety regulations. Traditional multi-use crucibles present higher risk profiles due to potential leaks and dust generation. The industry trend is moving rapidly toward One-Shot Crucible Technology, which minimizes hazardous waste, reduces exposure to high-temperature fumes, and ensures a safer environment for rail maintenance crews working in confined metro tunnels or busy urban centers.
Continuous innovation to support global and French railway standards
RMTS's strong R&D abilities, coupled with its involvement in railway projects, demonstrate the company's commitment to providing advanced thermit welding solutions that meet the specific demands of the railway industry.
We supply advanced crucible systems designed to streamline field operations while maximizing safety:
Disposable crucible design that eliminates cleaning and preheating, offering maximum efficiency and consistency in the field.
Multi-use refractory crucible designed for high throughput welding projects, reducing the per-weld cost over extended operations.
Delivering high-performance aluminothermic welding solutions for diverse rail systems
Mainline (SNCF network)
Crane Rail (Ports & Logistics)
Metro (RATP & Local Transit)
Seaports (Marseille & Le Havre)
High Speed (TGV / LGV)
Our main markets are in areas such as railway main lines, seaport crane rails, subways, trams, and high-speed railways. Aluminothermic welding plays a crucial role in these fields. No matter the scenario, RMTS welding technology, with its excellent performance, serves as a powerful support for promoting industry development and ensuring operational safety.
Thermit portion, sand mold, luting sand, ignitor are the main consumables for aluminothermic welding. 1 weld = 1 set of consumables. Proper procurement planning prevents project delays and ensures material freshness, especially when dealing with humidity-sensitive powders.
For a 10km track construction project using standard 12.5m rail lengths:
Formula: (10000m / 12.5m) × 2 lines = 1,600 sets of consumables
Having an accurate estimation helps in organizing shipping logistics and custom packaging, ensuring that the OEM thermite powder portions arrive in France in hermetically sealed, moisture-proof containers.
Technical knowledge, instructions, and historical context of aluminothermic welding
Aluminum thermite welding, also known as aluminothermic welding or thermit welding, is a specialized welding technique that utilizes a chemical reaction to generate intense heat for joining aluminum and steel components. Over the decades, it has evolved into a highly controlled process capable of producing joints with metallurgical properties matching the parent rail steel.
Preparation: Step 1. Ensure the rail ends to be welded are clean, free from rust, and properly aligned. The gap size (space between two rails to be welded) shall be 26±2mm. Proper alignment prevents structural stress points under high-speed train operations.
Thermit welding materials will fail if exposed to water. All welding materials should be kept away from any moisture in storage, as well as during the welding process. Moisture introduction can cause rapid gas expansion and weld porosity.
Thermit welding, also known as aluminothermic welding, requires careful handling and storage of its materials to ensure safety and optimal performance. Store in dry, well-ventilated spaces, avoiding direct contact with damp floors or walls.
We offer a wide range of thermit welding materials, such as welding kits, sand moulds, one-shot crucibles, long-life crucibles, luting sand, and ignitors, ensuring consistent quality and reliable performance across all French rail networks.
We formulate welding powder portions for specific European rail profiles.
Contact Our EngineersExplore our global-standard components and specialized tools for railway construction
