I. Product Definition and Core Positioning
PIP (Pre-Insulated air ducting) prefabricated insulated air ducts are factory-fabricated integrated ventilation ducts that integrate three major structures: the base material of the air duct, the insulation layer, and the protective layer. They do not require secondary insulation construction on site and are mainly used in HVAC systems, clean workshop ventilation, industrial waste heat recovery, and other scenarios.
Ii. Product Structure and Material Configuration
Base material layer: Galvanized steel plate (thickness 0.5-1.2mm) or aluminum foil composite board is adopted, with wind pressure resistance strength ≥1500Pa, suitable for different air volume requirements.
Insulation layer: The core is high-density polyurethane foam (density ≥40kg/m³), with a thermal conductivity of ≤0.024W/(m · K), and its insulation performance is over 30% better than that of traditional glass wool.
Protective layer: The outer layer is made of PVC color film or aluminum sheet, with a waterproof grade of IP65 and an aging resistance period of ≥10 years. It can adapt to complex environments such as dampness and chemical plants.
Iii. Key Performance Advantages
Energy-saving and highly efficient: The integrated insulation structure reduces cold/heat loss, lowering the system's operational energy consumption by 20% to 30%, in compliance with the national "Energy Efficiency Design Standard for Public Buildings".
Anti-corrosion and anti-condensation: Dual protection of inner galvanized layer and outer protective film to prevent rusting on the inner wall of the air duct and condensation on the outer wall, reducing maintenance costs.
High air tightness: Factory-prefabricated joints are few, with an air leakage rate of ≤0.5% (far lower than the 2% required by the national standard GB 50243), ensuring ventilation efficiency.
Iv. Multi-scenario application scope
Commercial buildings: Central air conditioning supply air for shopping malls and office buildings, reducing the construction space within the ceiling.
Clean field: Food processing, pharmaceutical factories, smooth inner walls without dead corners, meeting GMP clean standards;
Industrial scenarios: Waste heat recovery ventilation in power plants and chemical workshops, with a temperature range of -30 ℃ to 80℃.
Rail transit: Air conditioning systems for subways and high-speed railway stations, with lightweight design (40% lighter than traditional air ducts) to adapt to space limitations.
V. Convenience of Installation and Maintenance
Quick installation: Factory prefabricated components are assembled on-site, and the installation efficiency is 50% higher than that of traditional air ducts, shortening the construction period by more than 30%.
Simple maintenance: The outer protective layer can be directly cleaned without disassembling the insulation layer, and only one visual inspection is required per year.
Long service life: The overall structural design has a service life of ≥20 years, requiring no frequent replacement and having a lower full life cycle cost.
Vi. Environmental Protection and Safety Features
Environmentally friendly material: The polyurethane insulation layer does not contain harmful substances such as formaldehyde and benzene, and complies with the GB/T 18883-2022 indoor air quality standard.
Fire protection compliance: Flame retardants are added to the insulation layer, and the combustion performance reaches GB 8624 B1 grade (difficult to ignite), meeting the building fire protection requirements.
