UNTDuct Pre-insulated Duct Profile

Materials & Technical Specifications
Pre-insulated duct profiles mainly adopt the following core materials:
Polyurethane (PU) foam core: Thermal conductivity λ≈0.02 W/m·K, with excellent thermal insulation performance and mechanical strength.
Polyisocyanurate (PIR) foam core: Thermal conductivity λ≈0.022 W/m·K, featuring superior fire resistance.
Phenolic foam core: Thermal conductivity λ≈0.02 W/m·K, resistant to high temperatures, low smoke, and non-toxic.
Key technical specifications include:
Thickness range: 10-80mm
Apparent density: 35-55kg/m³
Panel dimension: 3950mm × 1200mm × 20mm
Aluminum foil thickness: 0.06mm (embossed type)
Packing specification: 10 sheets/carton
Container Loading:
40'HQ Container:
3950*1200*20mm, 10 sheets packed in one carton, total 660sheets
2900*1200*20mm, 10 sheets packed in one carton, total 880sheets
20'GP Container: 2900*1200*20mm, 10 sheets packed in one carton, total 400sheets.
Advantages of UNTDuct Pre-insulated Duct Profile
1. Ultimate Thermal Insulation & Outstanding Energy Saving
Seamless tight lamination, cold loss rate ≤5% (traditional: 15%-20%), annual electricity savings 8%-12%, PU thermal conductivity as low as 0.022W/(m·K).
2. Efficient Construction & Shortened Construction Period
Factory prefabrication + on-site splicing, 3-5 times more efficient than traditional ducts. 1,000㎡ project completed in 3-7 days (traditional: 15-20 days).
3. Excellent Sealing & Stable Operation
Automated processing + special sealing, air leakage rate ≤2% (national Class I standard; traditional: 8%-15%), reducing energy consumption and protecting equipment.
4. Lightweight Design & Reduced Structural Load
Weight is 1/3-1/2 of traditional ducts (5-8kg/㎡ vs 18kg/㎡), suitable for load-sensitive scenarios.
5. Clean, Eco-Friendly & Versatile Applications
No harmful gas emissions, smooth surface with antibacterial property (some ≥99%), suitable for high cleanliness demand venues.
6. Easy Maintenance & Long-Term Low Cost
Stable structure + wear-resistant protective layer, maintenance cost reduced by over 60% compared to traditional ducts.
In summary, the UNTDuct Pre-insulated Duct is essentially an "efficiency upgrade solution" for ventilation systems - integrated design reduces construction complexity, superior performance boosts operational efficiency, and its lightweight, eco-friendly features meet modern building needs. Whether for short-term cost control or long-term energy savings and reduced maintenance, PID balances economy and practicality, having become a mainstream trend in the HVAC field.
Pre-insulated Duct Profile




Specification of PIR ALU Pre-insulated Duct
|
Item |
Unit |
Specification |
|
Panel Structure |
|
Alu./ PIR Foam/ Alu. |
|
Standard Panel Size |
mm |
3950*1200*20 |
|
Alu. Foil Thickness |
mm |
0.06 |
|
Foam Density |
kg/m3 |
48 |
|
Thermal Conductivity |
w/m.k |
0.022 |
|
Compressing Strength |
Mpa |
0.2 |
|
Bending Strength |
Mpa |
2 |
|
Water Absorption |
% |
0.36 |
|
Dimension Change |
% |
0.3 |
|
Working Temperature |
℃ |
-100 to +80 |
|
Maximum Allowable Wind Velocity |
m/s |
≤12 |
|
Continuous Running Maximum Temperature |
℃ |
≤70 |
|
Lifespan of PIR Air Duct |
years |
>20 |
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