PIR Duct Panels Structure
This product adopts a two-layer composite structure:
Outer Layer: A 0.15mm-thick aluminum plate provides excellent mechanical strength and corrosion resistance, while a 0.06/0.08mm embossed aluminum foil enhances surface durability and optimizes air flow efficiency.
Core Material: Polyisocyanurate (PIR) foam with a thermal conductivity as low as 0.022 W/(m·K).
Core Structure and Material Advantages
1. PIR Foam Core Layer
High-Efficiency Thermal Insulation: The thermal conductivity of PIR foam (polyisocyanurate foam) is as low as 0.022 W/(m·K), which effectively reduces heat transfer between the inside and outside of the pipeline, lowers air conditioning energy consumption, and achieves significant energy-saving effects.
Fire Retardancy: Complies with high international fire safety standards, with an oxygen index ≥32%. It is difficult to ignite when exposed to an open flame and does not drip, effectively delaying the spread of fire and ensuring building fire safety.
Lightweight and High-Strength: With a density of only 38–45 kg/m³, it is lightweight and easy to install. Meanwhile, it has excellent compressive strength, can withstand external impacts during transportation and installation, and is not prone to deformation or damage.
2.Outer Layer
(1)0.15mm Aluminum Plate Outer Layer
Structural Reinforcement: The 0.15mm aluminum plate gives the duct board excellent mechanical strength, capable of withstanding collisions and friction in daily use, extending service life, and being particularly suitable for places with dense crowds or significant vibrations.
Corrosion Resistance and Weatherability: The aluminum plate surface forms a natural oxide film, with excellent corrosion resistance. It is not afraid of humid, acidic, or alkaline environments, making it suitable for complex scenarios such as industrial plants and basements.
(2)0.06/0.08mm Embossed Aluminum Foil Outer Layer
Moisture-Proof and Anti-Penetration: The dense structure of the aluminum foil layer effectively isolates water vapor, preventing the PIR foam from being damaged by moisture and ensuring long-term stable thermal insulation performance.
Friction Enhancement: The embossing process creates concave-convex textures on the aluminum foil surface, increasing friction between panels to facilitate splicing and installation, reduce air leakage risks at joints, and improve overall airtightness.
Aesthetic and Durable: The unique embossed design combines visual appeal with anti-slip functionality. Meanwhile, the smooth surface of the aluminum foil is not prone to dust accumulation, making it easy to clean and maintain.
Typical Applications
HVAC system air ducts (temperature range: -50°C to +120°C)
Pressure ventilation systems for cleanrooms and laboratories
Condensation-proof pipelines in food processing plants
With its excellent performance and wide applicability, PIR duct board (covered with 0.15mm aluminum plate / 0.06/0.08mm embossed aluminum foil) has become an ideal choice for HVAC systems in modern construction and industrial fields. For more product information or customized solutions, please feel free to contact us!
FAQs of PIR Foam Pre-insulated Aluminum Duct
Do PIR pre-insulated (PI) ducts require additional insulation after installation?
No. Unlike traditional steel ducts (which need separate insulation layers like fiberglass), PIR pre-insulated panels are factory-insulated with integrated facing. This eliminates the need for secondary insulation work, saving time and labor.
In which scenarios is PIR pre - insulated duct sheet suitable?
It is widely used in commercial buildings such as offices, shopping malls, and hotels, as well as in residential complexes, industrial facilities, healthcare and food processing facilities, and cold storage and refrigeration systems.
How is PIR pre - insulated duct sheet packaged?
-It is usually packaged in plastic film or cartons, with 10 sheets per package.
How to maintain PIR pre-insulated (PI) ducts?
Maintenance is minimal. Regular inspections for joint tightness (to prevent air leakage) and surface damage (e.g., punctures in aluminum facing) are recommended. Cleaning the inner surface periodically (with mild detergents) helps maintain airflow efficiency, especially in hygiene-sensitive areas.
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