
PU Pre-insulated Duct Sheet
PU Pre-insulated Duct Sheet (Polyurethane Pre-insulated Duct Sheet) is a factory-prefabricated, all-in-one composite material tailored for HVAC (Heating, Ventilation, and Air Conditioning) duct systems. Unlike traditional "duct substrate + separate insulation" solutions, it integrates structural support, thermal insulation, and protective functions into a single sheet-making it a core component for efficient, fast, and reliable duct construction.
Key Advantages: Why PU Pre-insulated Duct Sheet Outperforms Traditional Solutions
For contractors and project teams, the PU Pre-insulated Duct Sheet solves many pain points of traditional duct systems (e.g., galvanized iron ducts + glass wool insulation). Its advantages directly translate to time savings, cost reduction, and better client satisfaction.
① Ultra-High Thermal Insulation & Anti-Condensation
Energy efficiency: The PU core minimizes heat/cold loss. For air conditioning systems, it reduces cold air loss by <3% (vs. 10-15% for poorly insulated traditional ducts), cutting clients' annual HVAC energy bills by 15-20%.
Condensation prevention: Even in high-humidity environments (e.g., southern China's rainy season), the sheet's low thermal conductivity avoids surface condensation-eliminating water damage to ceilings, walls, or electrical equipment (a major source of post-installation callbacks).
② Lightweight & Fast Installation
Light weight Compared to traditional ducts + insulation. This reduces:
Transport costs (30-40% less than metal ducts);
Structural load on buildings (no need for heavy-duty hangers-standard 6mm threaded rods suffice);
Labor intensity (2 workers can install 80-100 m²/day, vs. 30-40 m²/day for traditional ducts).
Simplified assembly: Sheets are factory-cut to custom sizes (length: 2-6m; width: 0.5-1.2m).
③ Excellent Airtightness & Hygiene
Airtightness: Factory-sealed edges and standardized connections ensure air leakage rate <2% (meets ISO 10079 Class 1 standards), vs. 8-15% for traditional ducts. This improves HVAC system efficiency and avoids uneven temperature distribution in rooms.
Hygiene: The smooth inner steel layer has no gaps or fiber shedding (unlike glass wool insulation, which may release tiny fibers into the air). It meets GMP standards for pharmaceuticals, food processing, and hospitals-easy to clean with compressed air or disinfectant.
④ Durable & Low Maintenance
Long lifespan: Resists corrosion (inner galvanized steel has a zinc coating of ≥120 g/m²) and moisture; the PU core does not age or settle over time. Service life is 20-25 years (vs. 10-15 years for traditional ducts with aging insulation).
Low maintenance: No need for regular insulation replacement or rust removal-only occasional wiping of the outer aluminum foil layer to remove dust.
In summary, PU Pre-insulated Duct Sheet is a "high-performance, cost-effective, and labor-saving" solution for modern HVAC projects. It not only shortens construction cycles and reduces costs for contractors but also delivers long-term energy savings and comfort for clients-making it a top choice for today's competitive construction market.
certification of PU Pre-insulated Duct sheet
Fire Safety, Thermal Conductivity and Physical Performance

BS 476 Part 6&7

ASNZS 1530.3

thermal Conductivity

Compress Strength

CFC HCFC Free
How to make Air Ducts with PU Pre-insulated Duct Sheet
The fabrication process of Pre-insulated Air Ducts






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