PU Air Hose

Product Overview

PU air hose, also known as PU polyurethane air hose, is the most widely used flexible hose in pneumatic systems, primarily responsible for conveying compressed air between the air source and solenoid valves or cylinders. This hose is extruded from highly elastic polyurethane material, featuring uniform wall thickness and a smooth inner surface, which effectively reduces airflow resistance. It also boasts excellent flexibility and bendability, easily adapting to tight installation spaces on equipment. Even after repeated bending, it resists whitening and cracking, and remains tough and non‑brittle even in low‑temperature environments. Product specifications cover the full range from Φ4 to Φ16, including standard sizes such as 4×2.5, 6×4, 8×5, 10×6.5, 12×8, and 16×12, perfectly compatible with mainstream quick‑connect pneumatic fittings available on the market. Widely applied in various automated devices and assembly line scenarios, it also supports custom colors and export orders to meet diverse customer needs.

Key Performance Parameters

1. Working Pressure: At 23°C, the typical working pressure ranges from 0.6 to 0.8 MPa, with a burst pressure of at least three times the working pressure.
2. Temperature Range: -20°C to +60°C.
3. Suitable Media: Ideal for conveying dry compressed air; not suitable for strong solvents or concentrated acids and alkalis.
4. Standard Specifications: Includes sizes such as 4×2.5, 6×4, 8×5, 10×6.5, 12×8, and 16×12.
5. Optional Colors: Transparent, blue, black, red, etc., with support for custom colors.

Core Advantages

1. Exceptional flexibility with a small bending radius, making wiring in tight equipment spaces easy. Withstands at least 100,000 bends without whitening or cracking, fully meeting the demands of continuous operation and vibration conditions, effectively addressing industry challenges of pipe cracking and leakage due to repeated bending.
2. Smooth inner walls reduce airflow resistance; under the same length, pressure loss is approximately 20% lower than inferior hoses, resulting in improved responsiveness of pneumatic cylinders and alleviating issues caused by rough inner surfaces and high pressure loss in conventional hoses.
3. Excellent elasticity ensures tight sealing with quick‑connect fitting seals, minimizing air leaks and reducing micro‑leaks at joint connections, significantly lowering the risk of leakage in 0.6 MPa systems and avoiding common problems associated with large pipe tolerances and joint leaks.
4. Lightweight design simplifies whole‑machine wiring and assembly, reducing pipeline weight and boosting assembly efficiency, thus resolving difficulties in wiring and low assembly productivity.
5. Available in multiple colors for easy identification of different air circuits, facilitating quick troubleshooting during maintenance and lowering service complexity.
6. Oil‑resistant surface withstands typical workshop oil mist, extending service life under normal operating conditions and preventing rapid aging of the hose in oily environments.
7. Comprehensive specifications ensure full compatibility with mainstream quick‑connect fittings on the market, supporting bulk roll shipments and cut‑to‑length processing to meet diverse procurement needs across various applications.

Core Value Proposition

1. Superior bend‑resistance guarantees long‑term stable operation of pneumatic lines, reducing downtime and repair costs caused by pipe damage.
2. Low pressure loss design enhances overall system efficiency, enabling faster response from pneumatic components like cylinders and improving equipment performance.
3. Stable airtightness minimizes compressed air leakage, cuts energy waste, and lowers long‑term operating costs.
4. Multi‑color coding and lightweight design simplify equipment wiring and subsequent maintenance, boosting operational efficiency.
5. Full specification compatibility and customization options cater to personalized requirements of various automated devices and projects, accommodating global procurement scenarios.

Target Customer Groups

Non‑standard automation equipment manufacturers, packaging machinery producers, textile machinery companies, printing equipment makers, woodworking machinery manufacturers, food processing equipment suppliers, lithium‑ion/photovoltaic equipment firms, construction machinery component providers, pneumatic hardware distributors, line renovation and old equipment upgrade service providers, pneumatic circuit modification contractors, overseas buyers, and more.

Application Scenarios

This product finds extensive use in non‑standard automation, packaging machinery, textile and woodworking equipment, new energy tooling, assembly lines, and equipment renovation and maintenance—covering a wide range of pneumatic system applications. Specifically, it can be connected to cylinders, solenoid valves, pneumatic grippers, blow‑off dust removal circuits, enabling quick hose connection and disconnection while adapting to continuous operation and vibration conditions. For food and new energy projects, corresponding materials and testing documentation are available to meet specific industry compliance requirements.

Solutions to Industry Pain Points

1. Addressing repeated pipe bending, cracking, and leakage: Thanks to its high resilience and ability to endure at least 100,000 bends without whitening or cracking, this hose dramatically extends service life and reduces maintenance frequency.
2. Tackling difficulties in wiring and low assembly efficiency: With excellent flexibility, a small bending radius, and light weight, it allows effortless installation in tight equipment spaces, simplifying whole‑machine assembly and significantly boosting wiring and assembly productivity.
3. Mitigating rough inner walls and high pressure loss: Its smooth inner surface reduces gas flow resistance, cutting pressure loss by about 20% compared to inferior hoses, thereby enhancing system responsiveness.
4. Solving issues of large pipe tolerances and joint leaks: Uniform wall thickness and superior elasticity ensure tight sealing with quick‑connect fittings, stabilizing airtightness and markedly reducing micro‑leak risks at joint connections.
5. Countering rapid aging in workshop oil‑mist environments: The oil‑resistant surface withstands typical workshop oil mist, prolonging service life under normal operating conditions and lowering replacement costs.

Frequently Asked Questions (FAQ)

Q1: What media is the PU air hose suitable for?
A: The PU air hose is ideal for conveying dry compressed air but not suitable for strong solvents or concentrated acids and alkalis. Users should pay attention to media compatibility when selecting the hose.
Q2: What is the operating temperature range of this PU air hose?
A: The product operates stably within a temperature range of -20°C to +60°C. It will not become brittle or crack in low temperatures, nor will it lose structural integrity in high temperatures.
Q3: Which fittings can be used with this PU air hose?
A: With specifications covering the full range from Φ4 to Φ16, including various standard sizes, this hose is fully compatible with mainstream quick‑connect pneumatic fittings available on the market, so there’s no need to worry about compatibility issues.
Q4: Does the company offer customization services?
A: Yes, we support custom colors, as well as cut‑to‑length processing and export orders, meeting diverse customer needs.
Q5: How does the PU air hose perform in terms of bend resistance?
A: The product exhibits outstanding bend resistance, enduring at least 100,000 bends without whitening or cracking, adapting well to continuous operation and vibration conditions, effectively preventing pipe damage.