Explore our foundational hydraulic and pneumatic products designed to sustain heavy loads in extreme mining applications.
Founded in 1996, Shaanxi Kelong New Materials Technology Co., Ltd. grew from the prestigious Xianyang Kelong Rubber Products Institute. Over nearly three decades of relentless research and industrial evolution, we have established ourselves as a technological innovation titan, seamlessly integrating R&D, high-end manufacturing, and global distribution networks.
Our core manufacturing programs concentrate on hydraulic seal sets, high-pressure hoses, and coal mine auxiliary transportation equipment, alongside professional repair services and comprehensive technical consultation. Kelong's engineering footprint spans critical, high-reliability sectors globally, including underground coal mining, civil aviation, high-speed rail transportation, heavy engineering machinery, and wind power installations.
By leveraging advanced raw material formulations and custom engineering models, we address the extreme operational challenges of deep-earth extraction, ensuring maximum uptime, system integrity, and personnel safety.
A statistical testament to Shaanxi Kelong's leadership in the domestic and international heavy industrial sealing and mining vehicle landscape.
Currently, Kelong stands proudly as one of the top three entities in the domestic coal machinery sealing sector. With rapid capacity expansions, our high-pressure rubber hose lines and structural frame-type handling vehicles are projected to secure top-three national rankings within the next two years. Our key seal and transport technologies hold an impressive 8% domestic market share, driven by technical innovation and robust quality assurance.
600M
RMB Total Assets
400M
RMB Annual Output Value
500+
Dedicated Professionals
180+
Specialist Engineers & Technicians
In heavy-duty underground mining, procuring cheap hydraulic longwall carriers and associated hydraulic machinery is not merely a matter of cutting initial purchase expenditures. Instead, global purchasing directors focus on the concept of optimized Total Cost of Ownership (TCO). A carrier that experiences frequent seal failures, structural deformation, or fluid pressure drop becomes astronomically expensive in lost tonnage and mechanical downtime.
Kelong redefines cost-efficiency by positioning our products at the intersection of European manufacturing precision and Chinese supply chain integration. The "cheap" designation we achieve stems from strategic, structural advantages rather than compromised component standards:
Our commitment to global-grade quality is anchored by our production infrastructure. The sealing systems integrated within our hydraulic longwall carriers utilize state-of-the-art manufacturing machinery and raw material formulations imported directly from DMH Company in Austria. This guarantees that every composite seal, O-ring, and wiper system meets strict European tolerances.
Furthermore, our high-pressure rubber hose manufacturing facility operates a complete production line imported from Italy. This advanced line utilizes precise mandrel wrapping and computerized braiding tension systems to produce hydraulic hoses that display superior flex-fatigue life and withstand extreme pressure spikes, far outperforming standard aftermarket alternatives.
Why mining conglomerates and heavy machinery distributors globally align with Shaanxi Kelong.
Boasting over 500 employees, nearly 180 of whom are engineers and technicians, along with an R&D center and 7%+ annual R&D investment, we ensure robust and diverse production capacity.
With ISO 9001 and IRIS aerospace-grade certifications, our professional team conducts strict checks throughout the production process, guaranteeing top-notch product quality.
Powered by a large workforce and substantial R&D input, we're capable of manufacturing various customized sealing products to meet demands across multiple industrial domains.
Operating heavy hydraulic longwall carriers in deep mines requires adherence to strict safety mandates. Every region features specialized regulatory bodies—such as MSHA (Mine Safety and Health Administration) in the United States, MA (Coal Mine Safety Certification) in China, and ATEX / CE directives in the European Union. Kelong ensures that our exported equipment and replacement hydraulic kits conform entirely to these safety frameworks.
Our localized support structure guarantees that international clients receive prompt assistance, engineering redesigns, and rapid replacement parts. By offering field installation kits that match local standards, we eliminate conversion delays at the mine site. This includes adapting fluid connections from metric DIN to imperial BSPP or JIC standards, depending on regional preferences.
The global mining equipment industry is transitioning toward eco-friendly and automated underground operations. Key industry trends that Kelong is leading include:
Real-world deployments of Kelong fluid power systems across demanding heavy industries.
Ultra-tough, high-pressure hydraulic hose solutions designed for rock-solid machinery performance in deep coal extraction faces.
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Rigorously tested, high-pressure hydraulic hoses that maintain load-holding stability under extreme dynamic crane maneuvers.
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Corrosion-resistant and flexible hydraulic lines that provide offshore platforms with reliable power transmission under marine conditions.
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Pitch control and braking hydraulic hose systems providing long-life reliability for nacelle installations.
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Designed to seal tight and last long in ultra-high-pressure tunnel boring machine environments, significantly lowering overall maintenance costs and machine downtime.
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A showcase of our premium facilities featuring imported high-precision manufacturing lines.
Our main hydraulic hose manufacturing center uses complete fabrication lines imported from Italy to achieve high tensile steel wire braiding.
Using Austrian engineering technology to produce specialized polyurethane and PTFE seals with precise mechanical tolerances.
Fully controlled mixing and compounding of high-performance elastomers, including NBR, FKM, and HNBR compounds.
Every batch of longwall carrier cylinders, seals, and hoses undergoes intensive impulse pressure fatigue testing.
Providing direct answers to technical engineering and international procurement inquiries.
Our hydraulic seal sets are engineered with custom thermoplastic header rings and active sealing lips (such as those in our KL09 series). By utilizing high-modulus polyurethane and fluorocarbon compounds processed on our imported Austrian DMH systems, the seals resist extrusion under intense transient shock loads, eliminating pressure drop and keeping heavy longwall shield carriers operating smoothly.
Our high-pressure wire braided and spiral hydraulic hoses are designed and tested to conform to major international specifications, including EN 853, SAE 100 (such as SAE 100 R1, R2, R6, R12, and R15), and ISO standards. Our Italian-imported production lines guarantee tight control over wire tension and rubber adhesion, satisfying strict safety rules in global markets.
Yes. With our R&D center housing over 180 engineers and technicians, we analyze custom seal drawings, worn samples, and operational specifications. We can supply direct replacement kits for various classic heavy-duty frame-type handling vehicles and shearer systems.
We provide on-site technical support, detailed diagnostic kits, and fast component supply channels. Because we produce both the sealing elements and the high-pressure flexible conduits, we can troubleshoot complete actuator failures faster than standard component retailers.
Further high-performance solutions designed to complete your heavy-duty hydraulic machinery rebuilds.
Kelong New Materials
