Our flagship thermite welding products are trusted by railway operators across South Korea β from KTX high-speed lines to Seoul Metro and Busan urban transit systems. Engineered for precision, durability, and compliance with international standards.
South Korea operates one of Asia's most advanced and densely connected railway networks. With over 4,500 km of national rail lines, an extensive urban metro system in Seoul, Busan, Daegu, and Incheon, plus world-class high-speed KTX infrastructure, the demand for precision railway maintenance welding is consistently growing.
South Korea's KTX network operates at speeds exceeding 300 km/h. Maintaining rail joint integrity at these velocities demands the highest-grade thermite welding materials β where even micron-level imperfections can compromise passenger safety. RMTS thermite welding powders and crucibles are engineered to meet these extreme tolerances.
Seoul Metro alone serves over 7 million passengers daily across 9 lines and 300+ stations. Continuous rail maintenance is essential. Thermite welding is the preferred method for in-track joint repairs due to its speed, portability, and joint strength β making RMTS products ideal for metro maintenance contractors operating under tight overnight windows.
South Korea is home to the world's busiest seaports β Busan Port ranks among the top 5 globally by container volume. Heavy crane rails at these facilities undergo intense cyclic loading and require robust aluminothermic welding to maintain operational continuity. RMTS provides specialized solutions for crane rail environments.
The South Korean government's "μ 4μ°¨ κ΅κ°μ² λλ§ κ΅¬μΆκ³ν" (4th National Railway Network Plan) allocates over KRW 100 trillion toward new rail construction and network upgrades through 2030. This creates substantial demand for maintenance welding materials from both new-track construction and legacy line refurbishment.
Korea's rail maintenance market is served by specialized contractors including KORAIL (νκ΅μ² λ곡μ¬) subsidiaries, private engineering firms, and international joint ventures. These organizations require certified, reliable thermite welding consumables that meet Korean Railway Standards (KRS) and international UIC specifications.
South Korean rail equipment manufacturers such as Hyundai Rotem and POSCO actively export railway infrastructure solutions across Southeast Asia and the Middle East. RMTS supports these supply chains by providing OEM thermite welding materials that meet multi-regional compliance requirements, enabling Korean manufacturers to deliver complete rail solutions globally.
The South Korean railway maintenance sector is evolving rapidly, driven by technological advancement, sustainability mandates, and expanding network capacity. Here are the key trends shaping demand for thermite welding solutions.
South Korean railway operators are deploying AI-powered rail inspection systems and IoT sensors to detect micro-cracks and joint defects in real time. This data-driven approach is increasing the precision and frequency of targeted thermite welding interventions, reducing unplanned downtime and extending rail service life.
Environmental compliance is a priority for Korean infrastructure projects. RMTS thermite welding materials are formulated to minimize waste and reduce emissions during the exothermic reaction process β aligning with South Korea's 2050 Carbon Neutrality roadmap and green procurement standards adopted by KORAIL.
New metro lines are under construction or planned in Incheon, Daejeon, Gwangju, and the Seoul Capital Area. The GTX (μλκΆ κ΄μκΈνμ² λ) express rail network expansion represents one of the largest urban rail projects in Korean history, creating significant demand for high-performance rail welding consumables.
Korean railway authorities are increasingly specifying higher-grade rail steels (60kg/m and above) for new construction. RMTS's R&D team continuously develops thermite welding formulations compatible with these advanced rail profiles, ensuring metallurgically sound welds that match base material properties.
Busan New Port expansion and the development of smart logistics hubs across Korea are driving upgrades to industrial crane rail systems. These high-load environments demand robust aluminothermic welding solutions capable of withstanding continuous heavy-duty operations β a core competency of RMTS products.
As Korean rail contractors win overseas projects across ASEAN and Central Asia, they require internationally certified welding consumables from trusted manufacturers. RMTS's global project experience and multi-standard compliance make it the preferred supply chain partner for Korean engineering companies operating internationally.
RMTS is a manufacturer specializing in railroad thermit welding materials, based in Tianjin, China. With a factory spanning 5,500+γ‘ 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.
Our 5,500γ‘ production facility in Tianjin is equipped with advanced manufacturing and quality control systems, ensuring every batch of thermite welding material meets the exacting standards required by South Korean and international railway projects.
RMTS combines deep technical R&D with real-world railway project experience to deliver thermite welding solutions that perform reliably in South Korea's demanding rail environments.
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 β including the 60kg/m and UIC54 profiles widely used across South Korea's KTX and mainline networks.
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 extensive railway networks. 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. These collaborations enable RMTS to continuously strengthen its R&D capabilities in thermit welding technologies, ensuring solutions remain at the cutting edge of the industry.
RMTS's strong R&D abilities, coupled with its involvement in railway projects across Asia and beyond, demonstrate the company's commitment to providing advanced thermit welding solutions that meet the specific demands of the railway industry.
For South Korean railway operators, maintenance contractors, and engineering firms, RMTS delivers not just products β but a complete technical partnership. From initial material selection and on-site training to project supervision and post-weld quality verification, our team is committed to ensuring every rail joint meets the highest standards of safety and longevity.
RMTS thermite welding solutions are applied across the full spectrum of South Korea's railway and industrial rail environments β from high-speed mainlines to busy seaport crane systems.

Ensures seamless rail joints, providing durable connections, which are critical for maintaining the safety of South Korea's KTX high-speed and national mainline railway networks.

Widely used in the welding of crane rails at South Korea's major seaports due to its efficiency, reliability, and ability to create strong, durable joints under heavy cyclic loading.

Ideal for the confined spaces and tight overnight maintenance windows of South Korea's metro rail systems, including Seoul Metro, Busan Metro, and the Incheon Airport Railroad.

RMTS's aluminothermic welding technology ensures smooth and uninterrupted rail operations for cargo handling at South Korea's world-class container terminal facilities.
Our track record across Asia and beyond demonstrates RMTS's ability to deliver thermite welding solutions for complex, high-stakes railway projects β the same expertise we bring to South Korean clients.


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 aimed to improve connectivity across the city's suburbs. RMTS was selected as the most trusted supplier, providing 1,000 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, serving 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.
RMTS offers fully customized OEM thermite welding solutions for South Korean railway contractors, equipment manufacturers, and maintenance organizations. We adapt our formulations, packaging, and documentation to meet Korean Railway Standards (KRS) and your specific project requirements.
From thermite welding powders and precision crucibles to rail grinding machines and sand moulds β RMTS supplies the complete toolkit for professional railway maintenance welding operations across South Korea and the Asia-Pacific region.