Pre-insulated Aluminum Duct Board Material Composition
Insulation Layer
Polyurethane Foam (PU): Boasts an ultra-low thermal conductivity of as low as 0.02W/(m・K). Its closed-cell structure offers strong water resistance, along with sound absorption and noise reduction capabilities, effectively preventing heat transfer.
Phenolic Foam (PF): Has a thermal conductivity ranging from 0.02 to 0.03W/(m・K), delivering excellent thermal insulation performance. Classified as a B1-grade flame-retardant material, it forms a carbonized layer when exposed to fire, exhibiting outstanding fire resistance.
Polyisocyanurate Foam (PIR): Features excellent thermal stability and a low thermal conductivity of 0.022W/(m・K). With a dense molecular structure, it offers high compressive strength and superior anti-aging properties.
Facing Materials
Aluminum Foil: Provides moisture and water resistance, reflects heat to reduce thermal radiation. Its surface is usually embossed to enhance strength and aesthetics, and can be coated with anti-corrosive layers to improve corrosion resistance.
Galvanized Steel (GI): Possesses high mechanical strength, withstanding pressure and impact. The galvanized layer prevents rust and corrosion, making it suitable for scenarios requiring high strength and durability.
Color Steel: Offers rich and attractive colors, along with certain strength and corrosion resistance, contributing to the overall aesthetic appeal of buildings.
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Pre-Insulated Panels

Pre-Insulated board

Pre-insulated Aluminum Duct
The advantages of Pre-insulated Aluminum Duct Board
Superior Thermal Insulation: Low thermal conductivity effectively reduces heat loss or gain in HVAC systems, lowering energy consumption and improving energy efficiency.
Lightweight: Significantly lighter than traditional galvanized iron ducts (e.g., phenolic composite ducts are 1/6 the weight of iron ducts), reducing building load and facilitating transportation, installation, and construction.
Easy & Quick Installation: Factory-prefabricated boards require only on-site cutting, splicing, and fixing, eliminating on-site insulation work, reducing procedures, shortening construction cycles, and boosting efficiency.
Good Fire Resistance: Insulation materials like phenolic foam and PIR foam reach B1 or higher flame-retardant grades, forming protective layers to inhibit fire spread and enhance building safety.
Excellent Air Tightness: Special connections (e.g., flanges, inserts) with sealant ensure tightness, minimizing air leakage, improving air supply efficiency, and reducing energy waste.
The packing and container loading of PIR Foam Pre-insulated Aluminum Duct:
PIR Pre-insulated (PI) Duct Sheets:
Regular Size: 3950*1200*20mm/ 2900*1200*20mm
PIR Foam Density: 52kg/m3,
Weight: about 1.4kg/m2
Packing: 10 sheets/ paper carton
Container Loading:
40'HQ Container: 3950/2900*1200*20mm, 10 sheets packed in one carton, total 660sheets (3950mm) / 880sheets(2900mm).
20'GP Container: 2900*1200*20mm, 10 sheets packed in one carton, total 400sheets.

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