Four Layer Steel Wire Wound Hose

The JIDONGDA Four Layer Steel Wire Wound Hose is a reinforced pressure hose designed specifically for ultra-high-pressure hydraulic systems. Unlike standard braided hoses intended for low or medium pressures, this product features a construction comprising four layers of steel wire spiraled in alternating directions. It withstands high-pressure impulses, hydraulic shocks, and prolonged, intense loads while maintaining exceptional operational stability. The hose is primarily used in equipment such as heavy construction machinery, metallurgical plants, mining equipment, marine engineering systems, and high-pressure hydraulic power units.

Hose Construction

1. Oil-resistant inner layer

Made of high-performance NBR synthetic rubber; resistant to oil, permeation, and corrosion from the operating medium; suitable for use with various hydraulic fluids.

2. Four-layer spiral steel wire reinforcement

High-strength steel wire spirally wound in alternating directions; significantly enhances resistance to bursting and deformation, ensuring reliable performance under ultra-high pressure.

3. Buffer layer

Effectively absorbs instantaneous hydraulic shocks, reduces structural fatigue, and extends the hose's service life.

4. Protective outer layer

Resistant to abrasion, oil, aging, and UV radiation; suitable for operation in demanding environments such as outdoor sites, mines, and metallurgical plants.

Key Product Characteristics

1. Ultra-high-pressure operation: High nominal working pressure and a safety factor significantly exceeding that of standard hydraulic hoses;

2. Excellent resistance to impulse and shock loads: Suitable for heavy-duty applications involving frequent pressure fluctuations;

3. High structural stability: No blistering, deformation, or leakage during prolonged high-load operation;

4. Fatigue-resistant design for long service life: Effectively reduces maintenance and equipment replacement costs;

5. High operational adaptability: Resistant to oils, temperature extremes (high and low), and environmental aging;

6. Compliance with international safety standards: Compatible with various high-tech, ultra-high-pressure hydraulic systems.

Customized Options

JIDONGDA offers solutions tailored to specific operational requirements: reinforced construction (Type 4SH) for ultra-high pressure; versions for high-temperature (up to 150°C) and low-temperature (down to -40°C) operation; fire-resistant outer covers; anti-static designs; fittings compliant with SAE, DIN, and EN standards; ultra-durable protective outer layers; and custom hose assembly manufacturing.

Applications

Widely used in key sectors such as heavy construction machinery, metallurgical and steelmaking equipment, mining machinery, industrial high-pressure hydraulic systems, marine and offshore equipment, and specialized high-pressure power equipment.

Practical Application Examples

Example 1: Upgrading hydraulic auxiliary equipment in coal mines

In large domestic coal mines, standard hoses frequently burst and leaked under high-pressure pulses of 42 MPa, leading to frequent downtime and equipment failures. The frequency of hose replacements dropped by 72%, significantly enhancing operational safety and productivity.

Example 2: High-temperature operation at a hot rolling mill

A metallurgical plant in Shandong Province operated hot rolling mills at temperatures exceeding 120°C, requiring hoses with exceptional heat and pressure-pulse resistance. The company implemented custom-made, heat-resistant (up to 150°C) and fire-resistant JIDONGDA four-layer steel-wire-wound hoses, capable of withstanding prolonged thermal radiation and high-frequency pressure spikes. The service life of these products matched that of imported equivalents, while procurement costs were reduced by 35%.

Key product advantages

1. Four-layer spiral steel wire construction, ensuring high load-bearing capacity under ultra-high pressure and exceptional resistance to bursting and impulse loads.

2. Adaptable to various extreme industrial conditions, offering resistance to temperature extremes, abrasion, and corrosion.

3. Durable, fatigue-resistant design, resulting in reduced equipment maintenance costs and enhanced reliability.

4. Compatibility with numerous international standards; supports both standard and customized assemblies.

5. Widely used in high-end hydraulic systems worldwide, distinguished by consistent, reliable quality suitable for export markets.

Frequently Asked Questions

Q1: What are the main differences between the Four Layer Steel Wire Wound Hose and standard braided hoses? For what operating conditions are they designed?

A1: Standard braided hoses are suitable for low- to medium-pressure applications (below 35 MPa) involving minor impulse loads. In contrast, the JIDONGDA four-layer spiral-wound hose offers superior structural integrity; it significantly outperforms braided hoses in terms of pressure resistance, fatigue strength, and impact resistance. This hose is specifically engineered for heavy-duty service—handling ultra-high pressures (40–80 MPa), high-frequency impulse loads, and intensive, continuous operation in mining, metallurgy, and marine equipment—thereby ensuring enhanced safety and an extended service life.

Q2: Can the product withstand extremely high or low temperatures? Are custom-made versions available?

A2: The standard model is designed for an operating temperature range of -40°C to +100°C. We also offer versions for high-temperature (up to +150°C) and low-temperature (down to -40°C) applications, as well as products with specialized features such as fire-resistant, anti-static, or highly abrasion-resistant outer layers. This makes them suitable for use in extreme cold, high heat, explosive environments, and conditions involving abrasive elements.

Q3: Is it possible to order custom hose assemblies? Are the fittings compatible with common international standards?

A3: We provide comprehensive services for manufacturing hose assemblies compatible with fittings that meet international SAE, DIN, and EN standards. Length, bend angles, and fitting types can be customized to suit specific equipment layouts. All finished products undergo high-pressure testing to ensure leak-free performance and superior sealing integrity under ultra-high-pressure conditions.