Hydraulic Support Carriers play an indispensable role in the seamless operation of high-speed railway hydraulic and pneumatic systems. These devices ensure the reliable transmission of hydraulic pressure and pneumatic force that power essential operations such as braking, suspension adjustment, and track maintenance mechanisms.
Shaanxi Kelong New Material Technology Co., Ltd., established in 1996, leverages advanced European technologies — specifically from Austria’s DMH Company and top-tier Italian hydraulic hose production lines — to manufacture high quality hydraulic support carriers and sealing products. Their extensive expertise strengthens the high-speed railway industry by providing durable, high-performance components specifically designed for the demanding conditions of rail transportation.
The company’s focus on research and development, along with substantial investment in production technology, places them at the forefront of innovations within the hydraulic and pneumatic segments. This allows the production of custom solutions that adapt to the fast-evolving requirements of the railway sector.
Globally, the high-speed railway sector experiences rapid expansion, particularly across Asia, Europe, and Oceania regions, where governments prioritize investments in sustainable transportation infrastructure. Hydraulic support carriers form a critical part of the hydraulic and pneumatic systems enabling operational excellence. These components endure high pressures, continuous cycling, and extreme environmental conditions—demanding superior quality and reliability.
Despite growing competition, manufacturers like Kelong New Material maintain leadership through consistent quality control, R&D innovation, and certifications such as ISO and IRIS. Their products serve not only railway applications but also coal mining, metal mining, wind power, and civil aviation sectors, leveraging cross-industry knowledge to improve durability and technology standards.
In recent years, the high-speed railway hydraulic and pneumatic systems have advanced toward more intelligent and energy-efficient operations. The role of hydraulic support carriers is gradually shifting from simple conduits of mechanical power to integrated subsystems equipped with advanced sealing solutions, sensors, and condition monitoring capabilities.
Innovations include the development of multi-spiral hydraulic hoses with enhanced oil resistance and fatigue life, polyurethane hydraulic rod seals optimized for long service and low swelling, and advanced piston rod seals using composites of NBR, PTFE, FKM, PU materials to withstand severe workloads. These advancements improve system longevity while reducing downtime — a crucial factor given the high utilization rates of high-speed trains.
Additionally, the deployment of OEM/ODM services with flexible customization allows rapid adaptation of hydraulic support carriers to various climatic zones and operational pressures, with tailored lifecycle management to maximize operational uptime.
Beyond the typical usage in braking and suspension systems, hydraulic support carriers find innovative applications in:
These scenarios demand a balance of high pressure tolerance, flexibility, resistance to temperature variation, and minimal maintenance intervention — which Kelong New Material Technologies consistently delivers through its R&D-driven manufacturing.
| Main Market | North America, Western Europe, Eastern Europe, Eastern Asia, Oceania |
| Business Type | Manufacturer, Trading Company |
| No. of Employees | 300~500 |
| Annual Sales | 60,000,000 - 80,000,000 USD |
| Year Established | 1996 |
| Export Percentage | 30% - 40% |
| Customers Served | 100+ |
Shaanxi Kelong New Material Technology Co., Ltd. stands as a high-tech, innovation-driven manufacturer with more than 500 employees, including a significant proportion of engineers and R&D specialists dedicated to advancing hydraulic and pneumatic technologies. The company continually invests over 5.6% of its annual revenues in R&D, aiming to enhance product lifecycle, safety features, and performance benchmarks. It serves diverse industries such as coal mining, metal mining, civil aviation, wind power, and high-speed railways.
With ISO certifications and global export reach, Kelong emphasizes customization through its OEM/ODM service center, offering tailored sealing and hydraulic solutions perfectly adapted to unique client requirements and harsh industrial environments.
Kelong New Material provides a wide array of specialized services to meet market demands, including:

The sealing products utilize cutting-edge equipment and production technology sourced from DMH Company in Austria, ensuring high reliability and precision in performance.

Our hydraulic hose production base operates with a full set of advanced machinery imported from Italy, delivering products with exceptional durability and performance consistency.
Currently, Kelong's total assets reached 600 million RMB, generating an annual output value of around 300 million RMB. The workforce exceeds 400, including nearly 180 engineers and technicians with over 40% holding college degrees. R&D personnel represent 17.5% of the company, with investments in research consistently over 7% of yearly revenue in the last three years.
Our enterprise ranks among the top three companies in the domestic coal machine sealing industry and is rapidly advancing in categories like high-pressure rubber hoses and frame-type handling vehicles. Holding approximately 8% domestic market share, our company maintains a strong emphasis on technological innovation to stay industry leaders.
We sincerely welcome visits and cooperation opportunities to jointly advance hydraulic and pneumatic system technologies for high-speed railway and other critical industrial applications.