Hydraulic hoses serve as flexible conduits for transporting hydraulic fluids under pressure. They are essential components in hydraulic systems, delivering power to machinery and equipment across various industries. With over 60 years of experience, Duoli specializes in manufacturing high-quality hydraulic hoses known for innovation, reliability, safety, and superior performance, particularly in construction machinery and heavy equipment applications.
Duoli hydraulic hoses consist of an inner tube, reinforcement layer, and outer cover. The inner and outer layers are made from carefully formulated rubber compounds, including natural rubber, synthetic rubbers such as nitrile, chloroprene, EPDM, or fluororubber, depending on requirements for oil resistance, temperature tolerance, or chemical compatibility.
The reinforcement layer, which determines pressure capacity and durability, can be constructed with steel wire braiding, steel wire spiraling, or high-strength synthetic fibers. Steel wire reinforcement is typically used for high-pressure applications, while fiber
reinforcement suits medium- and low-pressure needs. Duoli maintains strict in-house control over rubber compounding and manufacturing processes to ensure consistent quality and long service life.
Duoli offers a comprehensive range of hydraulic hoses categorized by reinforcement type, pressure rating, and application requirements.
ISO 18752 Hydraulic Hoses are constant-pressure designs that exceed ISO 18752 standards. These hoses deliver excellent performance in demanding applications where consistent pressure and high impulse resistance are critical.
Spiral Wire Hoses feature high-strength steel wire spiraled reinforcement, usually in four or six layers. They are engineered for ultra-high pressure and extreme impulse cycles, making them ideal for the most heavy-duty hydraulic systems.
Braided Wire Hoses use steel wire braiding (single or multiple layers) as reinforcement. They provide an optimal balance between strength, flexibility, and pressure resistance, making them versatile for a wide range of medium- to high-pressure applications.
Medium and Low Pressure Hoses are designed for conveying hydraulic oil, water, and return-line fluids in systems operating under lower pressure. These hoses prioritize flexibility, lightweight construction, and cost-effectiveness.
Specialized Hydraulic Hoses are developed for unique or challenging conditions. This category includes thermoplastic hoses, high-temperature hoses, arctic hoses, steam hoses, and other custom solutions tailored to specific industrial needs such as chemical resistance or extreme environments.
Duoli hydraulic hoses are available in a wide range of sizes, typically measured by inside diameter (ID) from 1/4 inch to 2 inches or larger. Custom dimensions and specifications can be produced according to customer requirements. Please contact us for detailed size charts or assistance in selecting the right hose for your application.
Duoli hydraulic hoses are trusted globally for their durability and performance in harsh working conditions. Our advanced R&D capabilities, state-of-the-art manufacturing facilities, and in-house rubber formulation ensure superior abrasion resistance, flexibility, and service life.
The specially engineered abrasion-resistant covers protect the hose from external damage, scuffing, and degradation, significantly extending the life of the entire hydraulic assembly and reducing costly downtime.
In addition to hydraulic hoses, Duoli manufactures a full range of supporting products, including high-quality hydraulic hose fittings and adapters in SAE, metric, BSP, JIC, ORFS, and other standards. We also supply various industrial hoses such as PVC hoses, PU pneumatic hoses, nylon hoses, silicone hoses, chemical hoses, food-grade hoses, steam hoses, and more.
Whether you need standard hydraulic hoses in bulk or custom-engineered solutions, Duoli is your reliable partner.
Contact us today for a free quote or personalized recommendations. We look forward to supporting your hydraulic system needs with high-performance products you can trust.
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