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Explore our top-tier thermit welding equipment and consumables designed for demanding rail environments in Berlin's transit and industrial sectors.
Berlin stands as one of Europe's most dynamic transportation hubs, with an extensive rail network that serves millions of passengers and freight operations every day. The city's rail infrastructure encompasses the S-Bahn suburban railway, the U-Bahn underground metro, Deutsche Bahn's intercity and regional services, and an expansive tram network — making it one of the most complex and heavily utilized rail systems on the continent. This vast and interconnected network demands continuous maintenance, modernization, and expansion, all of which rely heavily on advanced rail welding technology.
Berlin's S-Bahn alone covers over 330 kilometers of track, while the U-Bahn system spans approximately 155 kilometers across ten lines. The tram network, one of the oldest and largest in the world, adds another 190 kilometers of track. Deutsche Bahn's Berlin Hauptbahnhof, the city's central station, is one of Europe's busiest rail interchange points, connecting high-speed ICE trains with regional and local services. Maintaining seamless, safe, and durable rail joints across this enormous network is a critical priority for Berlin's transit authorities, and thermit (aluminothermic) welding is the preferred method for achieving this goal.
Thermit welding, also known as aluminothermic welding, is the industry-standard technique for joining rail sections in the field. The process involves an exothermic chemical reaction between aluminum powder and iron oxide, producing molten steel that fills the gap between two rail ends to create a seamless, high-strength joint. This method is particularly valued in Berlin for several reasons: it can be performed on-site without the need for large equipment, it produces joints that match the mechanical properties of the parent rail, and it can be completed relatively quickly — a critical factor in a city where track possessions (maintenance windows) are tightly scheduled to minimize service disruption.
Berlin's climate, with its cold winters and temperature fluctuations, places additional stress on rail joints. Thermit welds are engineered to withstand thermal expansion and contraction cycles, ensuring long-term structural integrity even under the most demanding seasonal conditions. This makes thermit welding an indispensable technology for Berlin's rail operators, who must guarantee safety and reliability year-round.
Beyond passenger transit, Berlin and the surrounding Brandenburg region host significant industrial rail infrastructure. Logistics centers, manufacturing facilities, and intermodal freight terminals rely on crane rails and heavy-duty track systems that require robust welding solutions. The Port of Berlin, though smaller than Germany's major seaports, handles inland waterway freight that connects to rail networks, and the associated rail infrastructure benefits from the same advanced welding technologies used in passenger systems. Thermit welding is widely used for crane rail joints in warehouses, container yards, and production halls throughout the Berlin metropolitan area.
Berlin is currently undergoing a significant phase of rail infrastructure investment. The extension of the U5 line, connecting Berlin Hauptbahnhof to Alexanderplatz and beyond, required hundreds of precision thermit welds in challenging underground environments. The ongoing i2030 initiative — a joint project between the states of Berlin and Brandenburg and Deutsche Bahn — aims to expand and modernize regional rail connections, with new track construction and the rehabilitation of existing lines. These projects represent substantial demand for high-quality thermit welding materials and equipment, as well as skilled welding technicians.
The Berlin-Brandenburg region is also a focal point for Germany's push toward sustainable mobility. As more freight is shifted from road to rail to meet climate targets, the demand for new rail construction and maintenance — and by extension, for thermit welding technology — is expected to grow significantly in the coming decade.
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.
Berlin's U-Bahn, S-Bahn, and tram systems require thousands of rail joints that must be maintained to the highest safety and performance standards.
Temperature swings from -15°C to 35°C demand thermit welds that resist thermal stress, cracking, and fatigue over decades of service.
Major projects like the i2030 initiative and U5 extension create sustained demand for premium welding materials and on-site expertise.
Logistics hubs, manufacturing plants, and freight terminals across Berlin-Brandenburg rely on durable crane rail and heavy-duty track welding.
The rail welding industry in Germany and specifically in Berlin is evolving rapidly, driven by technological innovation, environmental policy, and the strategic importance of rail transport in Europe's largest economy. Several key trends are shaping the future of rail welding technology in the region:
RMTS combines deep technical expertise with hands-on project experience to deliver thermit welding solutions that meet the highest international standards.
RMTS have a highly skilled R&D team that works tirelessly to ensure that we produce thermit welding materials that meet the specific needs of each type of rail.
In addition to its strong R&D capabilities, RMTS actively participates in railway projects across China and abroad. The company collaborates with railway authorities, construction companies, and maintenance organizations to provide its expertise and materials for various projects.
By participating in railway projects, RMTS contributes to the development and maintenance of China's extensive railway network. Whether in high-speed rail, urban transit systems, or conventional rail lines, RMTS offers its thermit welding materials and services to ensure the integrity and safety of the rail infrastructure.
Furthermore, RMTS maintains partnerships with research institutions, universities, and industry experts in China. These collaborations enable RMTS strengthens its R&D capabilities in thermit welding technologies.
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.
RMTS thermit welding technology serves diverse rail sectors — from mainline railways and metro systems to crane rails and seaport infrastructure.
Ensures seamless rail joints, providing durable connections, which are critical for maintaining the safety of railway networks.
It's widely used in the welding of crane rails due to its efficiency, reliability, and ability to create strong, durable joints.
Ideal for the confined spaces and tight schedules of metro rail construction and maintenance.
RMTS's aluminothermic welding technology, ensure smooth for cargo handling.
Supporting industrial rail systems in manufacturing zones and freight terminals across the Berlin-Brandenburg region.
RMTS has delivered thermit welding solutions for major rail projects worldwide — demonstrating the expertise and quality that Berlin's rail operators can rely on.
As part of the Phase 2 expansion of Jakarta's Mass Rapid Transit (MRT) system, RMTS was contracted to provide aluminothermic welding solutions for the new underground and elevated tracks. The project involved welding 600 rail joints across a 12-kilometer stretch, connecting key areas of the city to reduce traffic congestion.
Our team worked closely with PT MRT Jakarta to ensure the welds met international safety standards. The project was completed on time, and the new line has been operating smoothly since its launch. Jakarta MRT officials highlighted the durability of the welds, which have withstood the high frequency of train movements and tropical weather conditions.
Challenge: The client faced the challenge of welding materials of T62 and P65 rails. The welding process needed to meet the rigorous standards set by the railway authorities, ensuring optimal track performance, longevity, and safety.
Solution: Our team collaborated closely with the client, thoroughly understanding their specific requirements. We provided them with our high-quality thermit welding materials, including welding kits, tailored to suit the T62 and P65 steel rail specifications.
Customer Satisfaction: The client expressed utmost satisfaction with our thermit welding materials. They acknowledged the superior quality, reliability, and technical support provided by our team. Our materials played a crucial role in enabling them to deliver high-quality rail construction projects and meet the demands of the railway industry.
KTMB Railways are aimed to improve connectivity across the city's suburbs. RMTS the most trusted supplier with 1000 aluminothermic welding materials for the new tracks, which included both underground and elevated sections. The project required precise welding to ensure smooth and safe operations, which serves millions of passengers annually.
RMTS's welding materials were chosen for their ability to create strong, seamless joints that could withstand the humid climate and heavy usage. The project was completed ahead of schedule, and the new line has significantly reduced travel times for commuters.
Berlin's underground and suburban rail systems operate around the clock on weekends and maintain intensive schedules throughout the week. Maintenance windows are extremely limited — often just a few hours during the night. Thermit welding is the preferred method because it can be performed quickly in confined tunnel environments and on elevated structures without requiring heavy machinery or prolonged track closures. RMTS's welding kits are designed for rapid deployment, enabling Berlin's maintenance teams to complete high-quality welds within tight time constraints.
Berlin's tram network, operated by BVG, is undergoing continuous rehabilitation and expansion, particularly in the eastern districts and new development areas. Tram rail welding presents unique challenges: the rails are embedded in street surfaces, often surrounded by utilities and other infrastructure. RMTS's compact welding equipment and precisely formulated thermit portions are well-suited for these constrained urban environments, delivering reliable joints that withstand the combined stresses of rail traffic and road surface movement.
Berlin Hauptbahnhof connects to Germany's ICE high-speed network, with trains operating at speeds up to 300 km/h. The rail joints on these high-speed corridors must meet the most stringent quality requirements, as even minor imperfections can cause vibration, noise, and accelerated wear at high velocities. RMTS's thermit welding materials are engineered to produce welds with mechanical properties that match or exceed those of the parent rail, ensuring smooth, quiet, and safe high-speed operations.
The Berlin-Brandenburg metropolitan region is a major logistics hub, with rail freight playing an increasingly important role in supply chain operations. The Großbeeren and Seddin marshalling yards, along with numerous industrial sidings, require robust rail welding solutions that can handle heavy axle loads and frequent train movements. RMTS's experience with heavy-duty rail types and crane rail welding makes it an ideal partner for these demanding industrial applications.
All rail welding work in Berlin must comply with Deutsche Bahn's technical specifications (DB TL 918 series) and the European standard EN 14730 for aluminothermic welding. RMTS's products are developed and tested to meet these rigorous requirements, and our technical team provides documentation and support to facilitate approval processes with German rail authorities. Our on-site training programs can be tailored to meet the certification requirements of German railway operators, ensuring that welding personnel are fully qualified to work on Berlin's rail network.
Browse our full range of thermit welding equipment, consumables, and accessories — engineered for performance and reliability in Berlin's rail infrastructure.
Whether you are a transit authority, rail contractor, or industrial operator in Berlin, RMTS delivers the thermit welding materials, equipment, and expertise you need. Contact us today to discuss your project requirements and discover how our solutions can support your rail infrastructure goals.
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