Thanks to its excellent products and quality services, UNT Duct is one of the leading pir composite duct board 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.
PIR Composite Duct Board
PIR Composite Duct Board serve as a premium high-performance solution for modern HVAC systems.
Structure: Silver Aluminum/ PIR Foam/ Silver Aluminum
Size: 3950*1200*20mm
Foam Density: 50-55kg/m3
Aluminum Thickness: 0.06mm or 0.08mm
Packing: 10 sheets/ package
Loading Capacity: 710 sheets/ 40'HQ (packed with plastic bags)
660 sheets/ 40'HQ (packed with cardboard box)
The UNTDuct PIR System: Redefining Air Distribution Excellence
A PIR pre-insulated duct system is far more than individual duct panels - it constitutes a fully engineered integrated solution. The whole system consists of four core components, among which the duct panel acts as the primary element.
PIR Composite Duct Board
This duct panel adopts a foundational three-layer sandwich composite structure.
Inner Facing Normally constructed with smooth food-grade aluminum foil, it creates a hygienic and airtight inner surface. It lowers air friction to optimize airflow efficiency and meets safety requirements for air handling systems.
PIR Foam Core High-density polyisocyanurate foam serves as the main thermal insulation and structural support. It delivers exceptional thermal performance with thermal conductivity reaching as low as 0.022 W/m·K, alongside reliable fire resistance ratings such as Class 0 and B1.
Outer Facing A protective cladding - generally aluminum foil or heavy-gauge metal sheet - safeguards the foam core against mechanical impact, moisture ingress and corrosion.
pre-insulated Duct Accessories:
Connecting Profiles & Flanges
These fittings firmly join adjacent duct panel edges to form stable connections.
Reinforcement Sections
Fabricated from aluminum or galvanized steel, they deliver additional structural support. They are particularly essential for large-size ducts to avoid deflection and sagging.
Tapes & Sealants
Specialized adhesive tapes and silicone sealants seal all joints and seams to deliver superior airtightness, prevent air leakage and maintain the ventilation system's energy efficiency.
Tools for pre-insulated Duct Fabrication
Professional tools use to fabricate duct panels into customized shapes and standard duct configurations.
Cutting Tools
Manual cutters or high-precision CNC router machines enable accurate panel cutting and scoring, ensuring precise dimensions for subsequent fabrication.
Bending Machines
Manual and advanced automatic bending machines deliver precise folding of pre-scored panels, facilitating the standardized forming of rectangular duct sections.
Core Benefits That Benefit Your Contracting Business
✅ Greatly Save Construction Time & Labor Expense Around 70% lighter than galvanized steel. No on-site duct fabrication and insulation wrapping. Installation efficiency increases 40%–60%, helping you handle more projects without extra labor overtime.
✅ Reduce Rework & After-sales Headaches Low water-absorption closed-cell PIR foam avoids condensation, mold and rust issues typical of insulated metal ducts, lowering repair callbacks.
✅ Energy-saving Edge to Secure Bids Ultra-low thermal conductivity cuts AC energy use by 20%–30% and meets green building regulations, forming a key advantage in tender competitions.
✅ Full UNTDuct Supporting System for Tight Assembly Matching aluminum/PVC flanges, sealant, hangers and professional tools guarantee airtight joints and avoid air leakage rework.
✅ Wide Project Adaptability Fit for offices, malls, hotels, hospitals, food cleanrooms, cold storage and humid coastal constructions, covering most commercial HVAC projects.
✅ Long-term Economic Value for End Users 20–50 years service life with little maintenance, lowering long-run building operating costs and improving your quotation appeal.
We provide free technician training, standard construction drawings, on-site technical guidance and ongoing consultation to help your team proficiently process and fabricate ducts.
How does the PIR Composite Duct Board contribute to reducing energy consumption?
1.High-density rigid PU foam core delivers superior thermal insulation, effectively blocking heat penetration and cutting heat/cold loss in air circulation.
2. Double-sided aluminum foil forms fully sealed structure with excellent airtightness, drastically reducing air leakage loss.
3. Stable insulation performance lightens the running load of air conditioning units, lowering frequent startup and power consumption.
4. It avoids extra heat compensation needed for traditional ductworks, stabilizing system operation efficiency all year round.
5. Overall optimized ventilation performance greatly reduces long-term operational energy costs for HVAC projects.
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