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PI Foam Aluminum Ductwork

PI Foam Aluminum Ductwork is a pre-insulated HVAC duct system featuring a PIR foam core sandwiched between corrosion-resistant aluminum facings. With ultra-low thermal conductivity of 0.022 W/(m·K) and Class 0 fire rating, it delivers superior energy efficiency, simplified installation, and over 20 years of service life for commercial and industrial applications .

Standard plate size: 3950 × 1200 × 20 mm
PIR foam density: 50 - 55 kg/m³
Unit weight of the sheet: Approximately 1.35-1.4 kg per square meter
Aluminum foil thickness: 60 - 80 microns (with embossing treatment)
Closed cell ratio: ≥ 95%
Fire resistance rating: BS 476 Part 6&7 Class 0 (equivalent to China National Standard B1 level)
Packing: 10 sheets/ package
Loading Capacity: 710 sheets/ 40'HQ (packed with plastic bags)
660 sheets/ 40'HQ (packed with cardboard box)

Core Performance Advantage of PI Foam Aluminum Ductwork

Thermal Insulation and Heat Preservation Performance
The thermal conductivity of the PIR foam core material is as low as 0.021 - 0.022 W/(m·K), which ranks at the forefront among all commonly used insulation materials. In comparison:

Traditional iron sheet ducts (with rock wool insulation): Thermal conductivity is approximately 0.038 - 0.045 W/(m·K)
XPS extruded board: Thermal conductivity is approximately 0.030 W/(m·K)

Glass wool: Thermal conductivity is approximately 0.035 - 0.040 W/(m·K)
This means that under the same thickness conditions, the heat loss of the PIR duct system can be reduced by approximately 30% - 40%, significantly reducing the energy consumption of the air conditioning system. The foam structure with a closed-cell ratio of up to 95% also gives the material an extremely low water absorption rate (24-hour immersion water absorption rate < 2%), enabling it to maintain stable insulation performance even in humid environments.

Service Life Comparison of PI Foam Aluminum Ductwork

Ductwork Type	Typical Service Life	Primary Failure Mode
PI Foam Aluminum Duct	20+ years	Physical damage
Galvanized Steel Duct	6–7 years	Corrosion / Insulation detachment
FRP (Fiberglass) Duct	10–15 years	Aging / Cracking
XPS Composite Duct	15–20 years	Insufficient fire performance

Core Advantages of PIR vs. Other Insulation Materials

Performance Aspect	PIR Foam	PU Foam	Phenolic Foam	XPS
Thermal Conductivity (W/m·K)	0.02	0.02–0.022	0.022–0.025	0.030
Fire Rating	Class 0 / B1	B2 / B1	B1	B2
Smoke Emission During Combustion	Low, non-toxic	Medium–high smoke	Low smoke	High smoke
Closed-Cell Ratio	>95%	>90%	>90%	>90%
Service Life	>20 years	15–20 years	15–20 years	15–20 years