PIR Rectangular Ductwork Material Composition
PIR is a high-performance insulation material made by isocyanate-polyether catalytic reaction (foam structure). It has ultra-low thermal conductivity (0.022 W/m·K, cutting HVAC energy consumption) and high closed-cell rate (>95%, good waterproofness).
Surface Materials
Aluminum foil: Lightweight, smooth, highly reflective (blocks thermal radiation).
Aluminum sheets: Higher strength and corrosion resistance.
Color-coated steel sheets: Aesthetic and mechanically durable.
These materials protect the PIR layer and enhance ductwork performance.
PIR Rectangular Ductwork Features
Excellent thermal insulation: PIR rectangular ductwork's low thermal conductivity cuts heat loss during AC hot/cold air transport, boosting energy efficiency and reducing consumption.
Superior fire resistance: PIR material is flame-retardant (usually Class B1 per GB 8624-2006; specially treated ones reach non-combustible Class A), delaying flame spread and reducing smoke/toxic gases in fires.
Outstanding airtightness: Professional manufacturing/connection gives PIR rectangular ductwork ultra-low air leakage, ensuring AC air volume/quality and minimizing energy waste.
High strength & lightweight: Lighter than traditional galvanized iron ductwork (easier transport/installation) while having enough strength/rigidity to resist pressure/forces without deformation.
Good corrosion resistance & anti-aging: Aluminum foil/aluminum surface resists moisture, acids, alkalis; PIR insulation is anti-aging for stable long-term performance, with a service life of 20-30 years.
Main Production Process of PIR Foam Pre-insulated Aluminum Duct
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