Premium sealing components & high-pressure hydraulic infrastructure for heavy-duty mining machinery.
Shaanxi Kelong New Materials Technology Co., Ltd. was founded in 1996, growing from the prestigious Xianyang Kelong Rubber Products Institute. Over the past three decades, we have evolved into a technological innovation powerhouse, seamlessly integrating research, development, mass manufacturing, and global sales channels.
We concentrate our core competencies on hydraulic seal sets, high-pressure industrial rubber hoses, coal mine auxiliary transportation systems, repair engineering, and specialized technical support services. Our engineered components have been field-proven and widely implemented across demanding sectors, including coal mining machinery, civil aviation, high-speed rail networks, heavy engineering machinery, and wind power installations.
Kelong stands as one of the top three manufacturers in the domestic coal machine sealing sector. With rapid growth driving our operational expansions, our high-pressure rubber hoses and frame-type handling vehicles are projected to enter the top three market share positions within the next two years. Currently holding an 8% market share in the highly competitive domestic market, we continuously drive technological upgrades to stay at the absolute forefront of heavy industrial applications.
Technical roadmap, system integration, and global procurement logic for mining support handling machinery.
Underground mining operations dictate some of the harshest environments on earth. Mining support handling vehicles (including shield haulers, frame-type carriers, and specialized utility transporters) are the lifeblood of auxiliary transportation systems. The technological roadmap for these vehicles is shifting rapidly toward three core pillars: Electrification, Autonomous Control Integration, and Ultra-High Durability Sealing Networks.
To reduce emissions in underground mines and optimize the Total Cost of Ownership (TCO), manufacturers are transitioning from traditional diesel drivetrains to explosion-proof lithium iron phosphate (LFP) batteries and hydrogen fuel cells. However, high-torque operations in steep grade declines require exceptional hydraulic force. This demands advanced hydraulic circuits equipped with multi-stage cylinder seals and high-strength, flexible braided hoses capable of operating under extreme, pulsating pressures without leakage. In the next five years, smart sensors embedded within hydraulic cylinders will provide real-time pressure, wear, and temperature telemetry, allowing operators to run predictive maintenance protocols before failures occur.
Efficient extraction requires rapid equipment relocation. During longwall transitions, heavy shield supports weighing up to 80 tons must be recovered, carried through tight roadways, and re-installed. Standard logistics vehicles fail under these conditions. The frame-type handling vehicle is the standard choice for this procedure, employing a heavy-duty mechanical frame and structural lifting systems.
Kelong's macro solutions focus on minimizing transition downtime. By implementing optimized hydraulic seal sets and high-pressure rubber hoses with customized end-fittings, we ensure that heavy haulers maintain consistent lifting pressure during sustained operations. This structural reliability minimizes fluid loss, reduces hydraulic system contamination, and complies with international safety directives for fire resistance and anti-static properties (MSHA / ATEX standards).
| Vehicle Component Type | Technical Challenge | Kelong Material Solution | Expected Performance Enhancement |
|---|---|---|---|
| Lifting Cylinder Rods | Abrasive dust, extreme pressure spikes | PTFE-loaded dynamic rod seals (KL86, KL15 HNBR) | 99.7% leak prevention, prolonged lifecycle |
| Main Hydraulic Lines | Impulse fatigue, abrasive wear on hoses | Stainless steel braided PTFE & high-pressure rubber hoses | Up to 1,000,000 impulse cycles without rupture |
| Guideway Systems | Frictional wear and alignment drift | Low-swelling composite hydraulic guide rings | Minimized metal-on-metal contact, smoother cylinder travel |
At Kelong’s state-of-the-art production hub, we utilize advanced manufacturing methodologies. We have imported a complete set of automated production lines from Italy to manufacture our high-pressure rubber hoses, alongside seal production equipment and CNC technology from the renowned DMH Company in Austria. This international tooling, combined with domestic supply chain agility, gives Kelong a unique cost-performance advantage.
With more than 7% of our annual revenue funneled back into research and development, we have designed seals and hose formulas specifically optimized for mining. Our "Factory 4.0" practices employ automated raw material compounding, strict thermal control, and zero-defect QA workflows. This ensures that global purchasers seeking "Cheap Mining Support Handling Vehicles" do not sacrifice reliability for cost. Cheap manufacturing is redefined as optimized structural design and automated efficiency, allowing us to offer highly competitive pricing directly from our source factory in Shaanxi, China.
Field-tested applications of Kelong components across demanding operational environments.
Ultra-tough, high-pressure hydraulic hose solutions deployed on structural drilling and hauling machinery, ensuring stable pressure delivery under continuous mechanical vibration.
Tested under rigorous dynamic loads, Kelong hoses provide steady pressure transmission to hydraulic stabilizers on mobile mining cranes operating at steep inclinations.
Our marine grade offshore application combines robust flexibility with advanced saltwater corrosion resistance, simplifying routine installation tasks.
High-efficiency hydraulic lines installed in wind turbine pitch control systems, delivering longevity in extreme low-temperature and high-altitude environments.
Deployed in Tunnel Boring Machines (TBM) characterized by continuous peak pressures. These hoses maintain structural integrity, reducing unplanned maintenance shutdowns.
Certified engineering quality matched with robust manufacturing infrastructure.
We boast a workforce of over 500 personnel, including a dedicated core of 180+ design engineers. This R&D team ensures we maintain an agile custom product catalog and robust manufacturing scalability.
Kelong is ISO 9001 and IRIS certified. Our quality control teams supervise every phase of production—from raw rubber inspection to automated high-pressure impulse testing.
Our sealing production utilizes CNC machining complexes from Austrian DMH Company, while our hydraulic hose facility operates Italy-imported machinery, ensuring tight tolerances.
Aligning with international mining safety frameworks and on-the-ground support.
Entering international mining territories requires adherence to localized safety frameworks. Mining support handling vehicles operating in North America must align with MSHA (Mine Safety and Health Administration) regulations, while those in Europe must adhere to ATEX directives for explosive gas and dust hazards. In Australia, compliance with MDG (Mining Design Guidelines) is mandatory.
Kelong designs products specifically to meet these compliance challenges. Our high-pressure hoses are covered in flame-resistant, anti-static (FRAS) outer layers, and our sealing compounds utilize custom-formulated polymers that exhibit high thermal stability and resistance to rapidly changing explosive atmospheres. Furthermore, Kelong provides localized engineering consultation and commissioning assistance directly to your maintenance yards. This ensures that every replacement seal set or customized hose bundle integrates smoothly into your auxiliary vehicle fleet, preventing certification issues during regulatory safety audits.
Essential insights for engineering procurement and supply chain managers.
Premium sealing systems and specialized high-pressure lines for global distribution.
Kelong New Materials
