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Precision-engineered track maintenance and installation equipment designed for maximum durability and joint integrity.
ABOUT RMTS
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 infrastructure demands are driving technological innovations in track joining and rail installation.
In the modern era of transportation, the railway network serves as the lifeblood of economic growth, connecting cities, ports, and industrial hubs. As high-speed rail networks expand and heavy-haul freight systems demand higher load capacities, the structural integrity of the tracks becomes paramount. This is where high-quality rail welding materials for rail installation play a critical role. Traditionally, railway tracks were joined using bolted fishplates, which left gaps between rail segments. These joints, however, are prone to wear and tear, leading to high maintenance costs, noise pollution, and limitations in train speed. The transition to Continuous Welded Rail (CWR) has eliminated these weak links, relying heavily on advanced aluminothermic (thermit) welding technologies to create a seamless, continuous steel structure.
“The quality of the rail weld directly impacts the safety, speed, and lifespan of the entire transit network. Investing in premium rail welding materials is not just a project requirement; it is a long-term commitment to operational safety and cost efficiency.”
The global market for rail welding consumables is experiencing a significant shift. Industrial and municipal operators are demanding materials that can withstand extreme environmental conditions, from sub-zero Siberian winters to scorching desert heatwaves. Consequently, R&D in thermit portion formulation, sand mould heat resistance, and crucible efficiency has accelerated. Modern rail installation projects require welding materials that minimize installation time without compromising the metallurgical properties of the weld. By optimizing the chemical composition of the thermit portion, manufacturers can match the hardness and wear resistance of the welded joint to that of the parent rail, ensuring uniform wear and reducing the frequency of maintenance cycles.
WHY CHOOSE US
RMTS have a highly skilled R&D team that works tirelessly to ensure that we produce thermit welding materials that meet the specific metallurgical needs of each type of rail profile and steel grade.
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 to strengthen its R&D capabilities in thermit welding technologies.
Exploring the core crucible technologies that define efficiency and purity in modern rail installation projects.
Designed for single-use efficiency, eliminating the need for cleaning and reducing contamination risks during the thermit reaction. Ideal for fast-paced construction environments.
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Built with high-refractory materials for multiple-use operations. Provides a sustainable, cost-effective solution for high-volume track laying and maintenance depots.
View More ProductsOur main markets span across critical infrastructure sectors where reliable aluminothermic welding is mandatory.
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.
PROJECT CALCULATIONS
Thermit portion, sand mold, luting sand, and ignitor are the main consumables for aluminothermic welding. 1 weld requires 1 set of consumables.
To help project managers estimate material requirements, we use a standard project calculation formula. For example, for a 10km track project using standard 12.5m long rails:
Calculation Formula:
(10000m / 12.5m) × 2 rails = 1,600 sets of consumables
This precise estimation ensures zero downtime during installation while preventing excess material storage costs on-site.
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.
Over 20 years of experience as a passionate and progressive aluminothermic welding manufacturing company.
Aluminum thermite welding, also known as aluminothermic welding or thermit welding, is a specialized welding technique that utilizes an exothermic chemical reaction to generate intense heat (over 2500°C) for joining steel rail components. Originating over a century ago, the process has evolved with high-purity powders and automated tracking tools to ensure seamless rail joints with minimal heat-affected zones.
Preparation: Step 1: Ensure the rail ends to be welded are clean, free from rust, moisture, and grease, and properly aligned. The gap size (the precise space between the two rails to be welded) shall be maintained at 26±2mm. Preheating is then applied to prepare the rail ends for the molten steel pour.
Thermit welding materials will fail if exposed to water. All welding materials, especially the thermit portion and sand moulds, should be kept away from any moisture in storage, as well as during the active welding process. Moisture can cause steam pockets and porosity in the finished weld, compromising its structural integrity.
Thermit welding, also known as aluminothermic welding, requires careful handling and storage of its materials to ensure safety and optimal performance. Consumables must be stored in a dry, ventilated warehouse, elevated off concrete floors on pallets, and protected from direct contact with moisture or flammable chemicals.
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. Our comprehensive catalog ensures consistent quality and reliable performance across entire track networks, backed by expert project consultation.
RMTS provides on-site technical instruction and welder certification support. Our engineers travel directly to construction fields, crane rail installations, and transit depots to ensure operators execute preheating, casting, shearing, and grinding steps in absolute compliance with global standards.
Explore our complete range of high-precision tools, consumables, and machinery for professional rail installation.
