Thanks to its excellent products and quality services, UNT Duct is one of the leading pre-insulated pu duct sheet manufacturers and suppliers in China. Welcome to buy the high quality and customized products from our factory. We will offer you the best service and fast delivery.
Pre-insulated PU Duct sheet
Pre-insulated PU duct sheets are lightweight, energy-efficient panels used to assemble HVAC ductwork. They consist of a rigid polyurethane (PU) foam core bonded to aluminum foil on both sides, replacing traditional metal ducts that require separate insulation.
| Specification | Typical Value | Why It Matters |
|---|---|---|
| Core Material | Rigid Polyurethane (PU) Foam | Provides excellent thermal insulation |
| Facings | 60/80μm Embossed Aluminum Foil (Internal) / 60/80/150/200μm Aluminum Sheet (External) | Durable, corrosion-resistant, and provides a hygienic surface |
| Thermal Conductivity | 0.020 W/m·K | Very low heat transfer, meaning high energy efficiency for your HVAC system |
| Standard Thickness | 20 mm (Also available: 10, 25, 30, 40mm) | Structural strength and insulation level; 20mm is most common for general applications |
| Panel Density | 45 - 50 kg/m³ | Indicates foam strength and durability |
| Compressive Strength | ~200 KPa | Ability to withstand pressure without deforming |
| Water Absorption | < 0.4% | Closed-cell structure makes it highly resistant to moisture, preventing mold and deterioration |
| Operating Temperature | -50°C to +80°C | Suitable for most heating and cooling applications |
Why Choose Pre-insulated PU Duct?
Energy Efficient: The low thermal conductivity keeps the air temperature consistent, reducing HVAC workload .
Space Saving: Because the insulation is integrated, the ducts are slimmer than traditional insulated metal ones, saving valuable ceiling space .
Quiet Operation: The foam core naturally dampens sound from fans and airflow .
Clean & Hygienic: The smooth aluminum inner surface prevents dust accumulation and resists mold, which is critical for indoor air quality
How to make Air Ducts with Pre-insulated PU Duct sheet
One of the biggest advantages is the simple, tool-based fabrication process that can be learned quickly:
Cutting & Grooving: Special tools are used to cut the panels and create V-shaped grooves for folding.
Folding & Assembly: The grooved panels are folded into a rectangular duct shape.
Sealing & Joining: Joints are sealed with special tape or glue, and sections are connected using aluminum profiles or flanges.
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