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PU Pre-insulated Air Ductwork
PU Pre-insulated Air Ductwork represent a high-performance monolithic solution developed for state-of-the-art heating, ventilation and air conditioning systems. The product adopts an accurately fabricated sandwich structure: its core layer is compact polyurethane foam possessing outstanding thermal resistance, clad on both sides with corrosion-proof aluminum foil claddings.
As off-site prefabricated modular components, the panels integrate thermal insulation capacity, structural bearing performance and air impermeability. The design omits independent on-site insulation construction procedures, effectively simplifying the overall ductwork erection process for various construction projects.
Structure: Silver Aluminum/ PU Foam/ Silver Aluminum
Size: 3950*1200*20mm
Foam Density: 40-45kg/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)
Advantages of PU Pre-insulated Air Ductwork
1. Excellent Thermal Insulation & Energy Efficiency
High-density PU foam core delivers ultra-low thermal conductivity (0.020–0.022 W/m·K) to block heat exchange. It stabilizes duct air temperature year-round, slashing HVAC energy loss by 30–40% and lowering long-term electricity costs for eco-friendly construction.
2. Reliable Fire Performance & Standard Compliance
Formulated with premium flame retardants, the PU core meets rigorous fire codes. It creates a fire-resistant char barrier to slow flame spread and cut toxic fume emission, ideal for high-traffic sites including schools and hospitals.
3. Waterproof Structure & Extended Service Life
Closed-cell PU foam repels water absorption to avoid mildew, insulation failure and structural damage. Paired with corrosion-resistant aluminum/steel facings, panels retain full performance for 15–20 years with low maintenance needs.
4. Smooth Inner Surface for Better IAQ & Airflow
Non-porous smooth lining reduces air resistance and pressure drop for higher system efficiency. Less dust and bacteria build-up ensures superior indoor air quality, perfect for hospitals, food factories and offices.
5. Ultra-Lightweight & Fast On-Site Assembly
Only 1/3 the weight of conventional metal ducts, simplifying transport and manual handling. Standard prefabricated modular panels connect quickly with dedicated glue and fittings, cutting installation time by half while guaranteeing uniform quality.
6. Wide Application & Flexible Customization
Fits residential towers, offices, hotels, malls and light industry plants. Customizable into rectangular, round and transition shapes for exposed or hidden duct layouts to match complex architectural designs.
How to fabricate PU Pre-insulated Air Ductwork Straight Duct?
Step 1 - Tracing: outline the duct shapes on the panel.
Step 2 - Cutting: Use hand cutting tools to trim panel edges and carve 90-degree V-shaped grooves on the panels.
Step 3 - Gluing: Apply glue to the cutting surfaces of the panels.
Step 4 - Folding: Once the adhesive fully cures, fold both sides inward to form straight duct sections.
Step 5 - Taping: Seal all outer duct joints with tape to achieve full air tightness.
Step 6 - Flanging: After gluing and securing steel angle supports, mount concealed PVC or aluminum flanges.
Step 7 - Reinforcement: reinforce the duct with an aluminum reinforcement bar and G.I. Shaped disks, if necessary.
Step 8 - Sealing: Upon finishing duct installation, apply silicone to fully seal every internal joint.
PID Panel Physical Property
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