Introduction and Technical Structure

The Combo flexible duct is one of the modern and engineered products in the family of flexible hoses that Kian Fan Industrial Production Group manufactures to meet specialized needs in the ventilation industry. As its name implies, the structure of this product is a combination of the advantages of foil and plastic pipes. The body of this duct consists of a layer of aluminum foil reinforced with a layer of polyester to provide the necessary tensile strength; however, its distinguishing feature is the presence of a PVC coating layer over this structure. This PVC coating acts as a defensive shield against destructive environmental factors while maintaining flexibility. Inside this multi-layer structure, a sturdy steel spring is placed that maintains the cylindrical shape.
This product can be manufactured in a diameter range of 10 to 45 centimeters and lengths of 6 to 10 meters, providing the necessary flexibility in designing ventilation systems. The operating temperature range of this product is from -20 to +100 degrees Celsius, making it suitable for most HVAC and industrial applications.

Key Features and Advantages

The most important feature of Kian Fan's Combo flexible duct is its high strength and long lifespan. The combination of aluminum foil and PVC coating creates double resistance against tearing, abrasion, and physical pressures. Unlike simple foil ducts that may be damaged by sharp objects or mechanical pressure, the PVC layer in the Combo protects the foil and drastically increases the product's lifespan.
The lightweight nature of this product is maintained, making installation and handling easy. Resistance to moisture is another advantage that prevents corrosion and rusting of the internal spring and degradation of the aluminum layer. But the standout feature of the Combo is its chemical resistance; this product is resistant to acidic and alkaline environments and offers reliable performance for transferring corrosive vapors or use in factories where air contains chemical particles. High flexibility also allows installation in complex paths without significant pressure drop.

Specialized Applications

Due to its reinforced structure and resistance to chemical factors, the Combo flexible duct has widespread applications in various industries. In industrial ventilation systems where air contains mild acidic or alkaline vapors, this product is the best option for safe air transfer. In chemical material production factories, petrochemical plants, and laboratories that require pipes with high durability and corrosion resistance, Combo flexible ducts are used.
Also, in environments with high humidity, such as swimming pools and laundries, this duct does not suffer from rot or deformation due to its PVC coating. In commercial ventilation systems, where transfer pipes are exposed to impact or contact with chemical cleaning agents, the use of Combo is recommended. This product is also suitable for connecting ventilation devices that vibrate, as its multi-layer structure absorbs vibrations.

Conclusion

The Combo flexible duct of Kian Fan Industrial Production Group, combining the strength of aluminum foil and the chemical resistance of PVC, provides a comprehensive and stable solution to complex challenges in air transfer. Choosing this product means investing in a system that offers high durability, high safety, and requires fewer repairs.

Structure: One layer of aluminum foil, reinforced with polyester and a layer of PVC coating, and a steel spring
Diameter range: 10 to 45 cm
Branch length: 6 to 10 meters
Operating temperature range: -20 to +100 degrees Celsius

Features

• High flexibility
• High strength and long lifespan
• Lightweight
• Resistant to moisture
• Resistant to acidic and alkaline environments