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PIP Insulation Duct
PIP duct is factory integrated pre-insulated HVAC duct with closed-cell PIR foam core and double aluminum foil layers. It features ultra-low thermal conductivity, lightweight structure, Class B1 fire resistance, fast modular assembly, widely used in commercial, cleanroom and rail transit ventilation systems.
Structure: Silver Aluminum/ PIR Foam/ Silver Aluminum
Size: 4000*1200*20mm
Foam Density: 50kg/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)
Product Structure and Core Materials of PIP Insulation Duct
The full name of PIP is Pre-Insulated Integrated Duct, which is a prefabricated integrated insulation duct. It has a three-layer sandwich structure. All parameters are based on national standard measured data:
1) Surface layer: Double-sided 60–80μm embossed aluminum foil, waterproof grade IP65, anti-oxidation, and moisture-proof;
2) Core layer: High-density PIR (polyisocyanurate) closed-cell foam, density 50–55kg/m³, closed-cell ratio 98%, thermal conductivity 0.018–0.022W/(m・K), water absorption rate ≤1%;
3) One-piece molding, no need for secondary insulation wrapping on site. The standard size of the finished board is 4000×1200×20/30mm, and it can be cut as needed.
Compared with traditional galvanized iron sheet + glass wool duct: The thermal conductivity of glass wool is 0.032W/(m・K). Under the same insulation thickness, the heat insulation performance of PIP is 37.5% higher.
Weight, Construction Efficiency and Project Cost of PIP Insulation Duct
1) Weight comparison: The surface density of PIP sheet material is 1.4 kg/㎡; the combined weight of 0.75mm galvanized iron sheet + 25mm glass wool is approximately 2.3 kg/㎡, resulting in a 40% reduction in weight, which lowers the load on the building ceiling and eliminates the need for reinforcing the joists in renovation projects;
2) Construction speed: The modular cutting, bonding and forming process reduces the construction period of the duct system on a single floor to only 1/5 of that of traditional iron sheet ducts. For a 20,000㎡ office building, the traditional duct system construction took 28 days, while the PIP duct system was completed in just 6 days;
3) Labor cost: By eliminating the three processes of iron sheet bending, insulation wrapping and aluminum foil protective layer, the labor cost is reduced by 25%.
The unit price of PIP sheet material is 10% higher than that of glass wool duct system, but considering labor and construction period, the overall project cost is the same or even slightly lower.
Air tightness, noise reduction and indoor air quality of PIP Insulation Duct
1) Air tightness: Special PIR adhesive is used to seal the joint gaps, with the leakage rate far lower than the national standard of 0.06L/(s・㎡); The gaps of traditional iron sheet duct flanges usually exceed the standard by 1-3 times, resulting in a large amount of ineffective energy consumption of air conditioning;
2) Noise reduction: The foam core layer has its own sound absorption function, and the vibration noise of the airflow is reduced by 15-20dB. For small and medium-sized machine rooms, a separate silencer can be omitted, saving ceiling space;
3) Cleanliness: The inner wall is smooth without fiber shedding, and there is no dust dispersion, meeting the GMP food and pharmaceutical cleanroom standards; Glass wool will lose fibers due to long-term air flow impact, polluting the clean area and cannot be used in medical scenarios.
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