Fire Rated Pre-insulated Ducts

Fire Rated PIR Pre-insulated Duct is a new-generation HVAC duct system specially designed for high-safety-level buildings. It features a polyisocyanurate (PIR) foam core as the insulation layer, adopting an integrated composite structure of "protective layer + insulation layer + protective layer". The outer and inner layers are made of high-strength fire-resistant aluminum foil or metal facings, while the middle high-density PIR foam is treated with a special flame-retardant process. It not only maintains an ultra-low thermal conductivity of 0.020-0.025 W/m·K but also passes stringent fire resistance certifications. While providing efficient insulation, it builds a solid defense line for building ventilation safety.

This duct is widely applicable to scenarios with dual high requirements for fire rating, insulation performance, and air quality, such as commercial complexes, hospitals, data centers, high-rise buildings, hotels, and industrial clean workshops. It is an ideal duct solution that balances energy efficiency and safety.

1. High-Level Fire Resistance, Building a Solid Safety Barrier

The core PIR foam is professionally modified for flame retardancy. When exposed to fire, it quickly forms a dense char layer, effectively blocking flame spread and inhibiting the release of toxic smoke.

Compliant with multiple international fire safety standards (e.g., GB 8624 Class A, BS 476 Part 6&7 Class 0), meeting fire safety requirements in high-risk areas, and gaining critical time for personnel evacuation and property protection.

2. Extreme Insulation Efficiency, Reducing System Energy Consumption

The PIR foam core with ultra-low thermal conductivity (0.020-0.025 W/m·K) effectively blocks heat exchange between the inside and outside of the duct, reducing cold and heat loss in the air conditioning system.

Compared with traditional ducts, it can reduce HVAC system energy consumption by 30%-40%, helping buildings achieve low-carbon and energy-saving goals, with significantly reduced long-term operating costs.

3. Moisture Resistance and Durability, Extending System Lifespan

The closed-cell foam structure combined with a sealed protective layer design provides excellent water and moisture resistance, preventing the insulation layer from mold growth or performance degradation due to moisture.

The outer aluminum foil/metal facing is corrosion-resistant and anti-aging, able to withstand complex environments such as humidity and high temperatures, ensuring the duct service life of more than 20 years.

4. Clean and Environmentally Friendly, Ensuring Air Quality

The smooth inner wall without dead corners reduces dust accumulation and microbial growth, lowering the risk of indoor air pollution, which is suitable for clean places such as hospitals and food workshops.

No harmful volatile substances are released during production, and the materials are recyclable, complying with green building environmental standards.

5. Convenient Installation, Improving Construction Efficiency

Factory-prefabricated standardized components, with a weight only 1/3 of traditional metal ducts, making transportation and handling easier.

Modular splicing design, no complex on-site cutting required, quick sealing and assembly with special accessories, shortening the construction period by more than 50% and reducing labor costs.

6. Comprehensive Adaptability, Strong Scene Compatibility

Supports multiple installation methods such as exposed installation, concealed installation, indoor and outdoor installation, and can adapt to different building layouts.

With good structural strength and flexibility, it can be customized into curved, reducing-diameter and other special-shaped components to meet the design needs of complex duct systems.

Fire Rated PIR Pre-insulated Duct, with the core concept of "no compromise on safety, no discount on energy efficiency", empowers the ventilation system with technology, making every air circulation efficient, clean and secure.

 

How to make Fire Rated Pre-insulated Ducts

 

the fabrication Process of Fire Rated Pre-insulated Duct

1. Marking

2. Cutting

3. Applying Glue

4. Folding

5. Applying Tapes

6. Install Flanges