1. PU Wire-Reinforced Hoses (Flexible Ducts)

Designed primarily for air and material conveying, these hoses feature a PU inner/outer layer reinforced with a spiral of steel or plastic wire.

Core Advantages:

Excellent Abrasion Resistance: PU's natural "wear-resistant king" property makes it ideal for conveying abrasive particles like sand, granules, and powder.

Full Transparency (in many grades): Allows visual monitoring of flow, making it easy to detect blockages or changes in material composition.

Kink Resistance: The spiral wire reinforcement prevents the hose from collapsing or kinking, even when dragged over rough terrain.

Temperature Performance: Withstands temperatures from -40°C up to 90°C (or 120°C for specialized grades), suitable for diverse seasonal conditions.

Lightweight: Significantly lighter than rubber alternatives, reducing operator fatigue and improving portability.

2. PU Steel Wire-Reinforced Air Hoses

Specifically engineered for high-pressure pneumatic tools and large-scale air supply lines.

Key Features:

High Burst Strength: The steel wire spiral provides excellent burst resistance for compressed air applications.

Electrical Conductivity (Antistatic): Many steel wire-reinforced PU hoses offer an antistatic layer, crucial for explosive atmospheres or environments with flammable dust.

Wide Diameter Range: Available from small-bore (6mm) for hand tools to large diameters (up to 100mm or more) for main air supply lines in factories.

Oil and Chemical Resistance: Resists degradation from lubricants used in air line lubricators.

3. Application Industries

Construction & Mining:

Connecting air compressors to jackhammers, rock drills, and pneumatic conveyors.

Dust and fume extraction systems.

Industrial Manufacturing:

Powering pneumatic cylinders, valves, and robotics.

Material transport of plastic pellets, flour, and cement.

Agriculture:

Pneumatic seeding equipment and sprayers.

4. How to Choose the Right PU Air Hose

Question: How do I decide between a wire-reinforced and a steel-wire model?

Answer: Consider the following factors:

For general air tools: A standard wire-reinforced PU hose with a working pressure of 1.0–1.5MPa is usually sufficient.

For main pipeline or high-pressure systems: A steel-wire-reinforced model rated for higher working pressures is recommended.

For abrasive material transport: Choose transparent PU wire hoses with thick walls for maximum lifespan.

For combustible environments: Always opt for antistatic (groundable) steel wire PU hoses.

5. Installation and Maintenance Tips

Check for sharp edges at connection points to prevent outer cover cuts.

Regularly inspect the hose for external wear and replace if the wire reinforcement becomes visible.

Store coils loosely to prevent permanent deformation of the spiral wire structure.