Hydraulic systems on construction equipment, mining machinery, and industrial plants demand hoses that can withstand constant pressure cycling, tight bend radii, oil saturation, and abrasive environments. A single-braid hose often fails prematurely under these combined loads. This Double-wire-braid flexible hydraulic hose uses a double-layer high-tensile steel wire braid and a flexible rubber compound to deliver the pressure capacity of a heavy-duty hose with the routing flexibility required in compact machine compartments. It is manufactured by Hengshui Zhehan Rubber & Plastic Products Co., Ltd., a direct factory with in-house compounding, braiding, and pressure-testing operations.
The reinforcement consists of two layers of high-tensile galvanized steel wire, cross-braided at a precise angle. This construction provides approximately 60% higher pressure capacity than a comparable single-braid hose of the same diameter. The braid angle is controlled to maintain hose stability under impulse loads and prevent wire displacement or "bird-caging" during flexing.
The Double-wire-braid flexible hydraulic hose is designed and tested in accordance with the dimensional and performance requirements of EN853 2SN, a recognized European standard for compact double-wire-braid hydraulic hose. This provides a verifiable reference point for pressure ratings, bend radius, and impulse performance.
Under impulse testing at the rated working pressure, the hose has completed 500,000 pressure cycles without leakage, burst, or structural failure. This test simulates the repeated pressure spikes that occur when hydraulic cylinders reverse direction or when loads shift suddenly.
Standard working pressure: 21 MPa to 35 MPa (3,046 psi to 5,076 psi)
Minimum burst pressure: ≥ 80 MPa (11,603 psi)
This burst-to-working-pressure ratio provides a clear safety margin for hydraulic systems with unpredictable pressure spikes.
The inner tube is compounded from a high-density oil-resistant synthetic rubber. It is suitable for mineral hydraulic oil, water-oil emulsions, and many standard hydraulic fluids. Long-term immersion does not cause significant swelling, hardening, or cracking.
The hose is engineered with a smaller minimum bend radius than many standard double-braid hoses. This allows installation in tight spaces—such as excavator boom joints or compact agricultural equipment—without kinking or internal flow restriction.
The hose remains serviceable from -40°C to +100°C (-40°F to +212°F) continuous, with intermittent exposure up to 125°C (257°F). The rubber compound does not become brittle in freezing conditions or soften excessively near hot engine bays.
The outer cover is made from a synthetic rubber formulated for ozone, UV, and abrasion resistance. It protects the steel braid from rust and mechanical damage in outdoor and industrial environments.
Excavators, wheel loaders, backhoe loaders, and mobile cranes. The hose is used for boom, bucket, and steering circuits where high pressure and tight bending occur simultaneously.
Hydraulic roof supports, roadheaders, and conveyor tensioning systems. The double braid provides an extra margin against rock impact and external abrasion in underground conditions.
Forging presses, rolling mill hydraulic systems, and continuous casting equipment. These applications involve high-frequency pressure pulses and high ambient temperatures near furnaces.
Combine harvesters, sprayers, injection molding machines, and compact utility equipment. The hose's flexibility simplifies routing in confined spaces, and its oil resistance suits long service intervals.
| Parameter | Details |
| Standard | EN853 2SN (dimensional and performance reference) |
| Working Pressure | 21 MPa – 35 MPa depending on diameter |
| Minimum Burst Pressure | ≥ 80 MPa |
| Inner Diameters | 6 mm, 8 mm, 10 mm, 13 mm, 16 mm, 19 mm (custom sizes available) |
| Standard Lengths | 20 m and 40 m rolls; custom cut lengths supplied |
| Inner Tube | Oil-resistant synthetic rubber |
| Reinforcement | Two layers of high-tensile galvanized steel wire braid |
| Outer Cover | Weather, ozone, and abrasion-resistant synthetic rubber |
| Operating Temperature | -40°C to +100°C continuous; 125°C intermittent |
| Media Compatibility | Mineral hydraulic oil, water-oil emulsions; not for strong acids or alkalis |
Route the hose without exceeding the published minimum bend radius. Avoid twisting during fitting assembly. Use compatible crimped fittings and tighten to the fitting manufacturer's torque specification. If the hose must be routed near hot surfaces or sharp edges, use protective sleeves or clamps.
Do not exceed the rated working pressure. Pressure spikes above the rating will shorten hose life. The hose is not intended for strong acid, strong alkali, or solvent service. For alternative fluids, contact the manufacturer before ordering.
Check the outer cover regularly for cuts, abrasion, or swelling. Inspect fittings for leaks or movement. If any steel wire is visible or the hose has been crushed, replace it immediately.
Keep the cover free of heavy oil, mud, and debris. Accumulated grime can hide early signs of wear and accelerate cover degradation.
Store unused hose in a cool, dry, ventilated area away from direct sunlight, rain, and ozone-generating equipment. Do not stack heavy objects on hose coils.
Standard hose samples are provided free of charge for evaluation. The customer covers freight.
Stock sizes: 1 roll or 1 cut length. Custom configurations: MOQ depends on diameter, length, and fitting requirements.
Inner diameter, length, pressure class, cover color, brand printing, and end fitting configurations can be tailored. Engineering drawings are reviewed by our technical staff.
Every production batch undergoes 100% pressure testing and dimensional inspection. The product is backed by a 12-month warranty against material and manufacturing defects under normal use.
Hengshui Zhehan Rubber & Plastic Products Co., Ltd. is a direct manufacturer, not a trading intermediary. The company has produced rubber and plastic hydraulic products since June 2018. The factory in Jingxian County, Hebei Province operates:
6 specialized production lines for hydraulic hoses, industrial hoses, and related assemblies.
Over 120 employees, including 18 engineers and quality-control technicians.
In-house processes from raw material inspection and rubber compounding to wire braiding, cover extrusion, and final hydraulic testing.
Documented quality management covering the full production cycle.
Convenient logistics access near major expressways and rail lines for domestic and export shipping.
The company has supplied double-braid hydraulic hoses for construction, mining, agricultural, and industrial applications for over 8 years.
A: The hose is designed and tested to meet the performance and dimensional requirements of EN853 2SN. We can provide inspection reports and, if required, coordinate third-party verification for specific certifications.
A: A double braid provides roughly 60% higher working pressure capacity and a greater burst margin. It also offers better resistance to external impact and improved impulse life, making it suitable for heavy-duty hydraulic circuits.
A: The hose can tolerate intermittent temperatures up to 125°C. For continuous operation above 100°C, please contact us with your specific temperature and fluid data so we can recommend an alternative compound if needed.
A: We recommend crimped fittings designed for double-braid hose dimensions. We can supply matched fittings or produce complete hose assemblies to your specifications.
A: Every batch undergoes 100% pressure testing at 1.5 times the rated working pressure, along with dimensional checks and visual inspection. Test records are maintained and available for review.
Address
No. 7126, Zhanggehou Rubber & Plastic Base, Jingzhou Town, Jing County, Hengshui City, Hebei Province, Chinaa
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