PIR Pre-insulated Duct
Pre-Insulated PIR Duct Panel offers an ideal solution for efficient air distribution in HVAC systems.
UNT HVAC PIR Pre-insulated Duct Panel is composed of a 20mm thick rigid closed-cell PIR (Polyisocyanurate) foam core, laminated on both sides with 60/80 micron embossed aluminum foil. The surface aluminum foil is coated with a 2g/㎡ corrosion-resistant epoxy varnish, ensuring durability and protection in harsh environments.
This PIR Duct Panel is a high-performance insulation material featuring excellent thermal insulation, fire resistance, and structural strength. It is widely used in HVAC (Heating, Ventilation, and Air Conditioning) duct systems, providing energy-saving, fireproof, and efficient air distribution.
Moreover, PIR Rigid Foam Duct features a simple and efficient fabrication process, including tracing, cutting, folding, taping, gluing, and profile reinforcement, which ensures fast installation and neat appearance.

Technical Data Sheet And Certificate
| Property | Specification | Explanation |
|---|---|---|
| Foam Density | 50-55kg/m³ | Provides rigidity and durability |
| Aluminum Foil Thickness | 60/80 microns | Adds durability and insulation |
| Thermal Conductivity | 0.02 W/m·K | Offers excellent thermal insulation to minimize energy loss |
| Fire Rating | BS 476 Part 6 & 7 Class 0 | Ensures strong fire resistance |
| Compressive Strength | 0.25 MPa | Provides reliable structural support |
| Bending Strength | 2 MPa | Allows flexibility to withstand bending without cracking |
| Water Absorption | 0.1% | Ensures high moisture resistance |
| Dimensional Stability | 0.3% | Maintains stability in varying environments |
| Maximum Wind Velocity | 13-20 m/s | Suitable for high-velocity airflows |
| Maximum Operating Temperature | 80℃ | Ideal for high-temperature environments |
Advantages of PIR Pre-insulated Duct

Exceptional Thermal Efficiency
Ultra-low thermal conductivity (0.018–0.022 W/m·K) ensures minimal heat loss/gain, reducing HVAC energy consumption by 20%+ .
Maintains stable temperatures even in extreme environments (-196°C to 140°C) .
Superior Fire Safety
Class B1 fire rating (GB 8624) with self-extinguishing properties and low smoke toxicity .
Forms a protective char layer during combustion, blocking flame spread .
Lightweight & Rapid Installation
Weighs only 1.4 kg/m², simplifying handling and reducing structural load .
Modular design allows 50% faster installation compared to traditional metal ducts .
certification of PIR Pre-insulated Duct
Fire Safety, Thermal Conductivity and Physical Performance

BS 476 Part 6&7

ASNZS 1530.3

thermal Conductivity

Compress Strength

CFC HCFC Free
Project Case of PIR Pre-insulated Duct




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