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PIR Composite Air Ducts
PIR Composite Air Ducts are a lightweight, pre-insulated sandwich panel with aluminum foil facings and a rigid polyurethane foam core. Designed for HVAC systems, it offers superior thermal insulation (0.02 W/m·k), energy efficiency, and quick installation, directly replacing traditional metal ductwork that requires separate lagging .
Structure: Silver Aluminum/ PIR Foam/ Silver Aluminum
Size: 3950*1200*20mm
Foam Density: 50-55kg/m3
Aluminum Thickness: 0.06mm or 0.08mm
Aluminum Color: Silver
Packing: 10 sheets/ package
Loading Capacity: 710 sheets/ 40'HQ (packed with plastic bags)
660 sheets/ 40'HQ (packed with cardboard box)

The "lightweight revolution" of PIR Composite Air Ducts

In the HVAC sector, the PAL prefabricated insulated duct system transcends a single product category. It delivers a revolutionary construction mindset, shifting the workflow from field fabrication to modular assembly. Constructed with PIR (polyisocyanurate) or phenolic foam core and dual-side aluminium foil cladding, the system distinguishes itself from traditional galvanized steel ductwork in material characteristics and construction logic.
Conventional duct projects demand separate shipment of galvanized steel panels, rock wool/fiberglass insulation, adhesives and auxiliary components. Such materials are bulky and susceptible to abrasion and damage.
The PIR Composite Air Ducts achieve a density of roughly 50 kg/m³, and completed ducts weigh only 15% of comparable galvanized steel alternatives.
Economically for logistics, unit-area transport costs are reduced, while the space required for on-site material storage decreases by over 60%.
How to fabricate PIR Composite Air Ducts
Installation Process:
The pre-insulated panels are fabricated on-site or in a workshop into duct sections.
The process involves: Tracing, cutting, and folding the panels.
Joining the sections with adhesives, tape, and aluminum profiles.
Sealing the joints to ensure the system is airtight.








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