Polyurethane Composite Duct

Thanks to its excellent products and quality services, UNT Duct is one of the leading polyurethane composite duct manufacturers and suppliers in China. Welcome to buy the high quality and customized products from our factory. We will offer you the best service and fast delivery.

Polyurethane Composite Duct

 

Polyurethane Composite Duct

It is a high-performance ventilation duct product, which is widely used in HVAC systems. The following is a detailed introduction:

 

Basic Structure: It is a sandwich structured panel. The core is Polyurethane(PU) foam, which is a closed-cell insulating material. The two outer layers are aluminum sheets or aluminum foils.

 

Panel Structure: Silver Alu. Foil/ PU Foam/ Silver Alu. Foil
Foam Density: 50-55kg/CBM
Panel Dimension: 3950mm*1200mm*20mm or 2900*1200*20mm
Alu. Foil: 60 or 80 Micron (Embossed)
Fire Rating: Class 0 (BS476Part 6&7)

certification of Polyurethane Composite Duct

 

 

Fire Safety, Thermal Conductivity and Physical Performance

BS 476 Part 6&7

ASNZS 1530.3

thermal Conductivity

Compress Strength

CFC HCFC Free

Thermal insulation property The closed-cell rate of the core insulation layer polyurethane is ≥90%, and the thermal conductivity is stable at 0.018-0.022 W/(m · K) (at 25℃), which is far superior to the traditional combination of iron sheet air ducts and insulation cotton (thermal conductivity ≥0.035 W/(m · K)), and can reduce the energy consumption of the HVAC system by 15%-20%, achieving long-term energy conservation.

Flame retardant safety: Made of flame-retardant polyurethane raw materials, it complies with the B1 grade standard of GB 8624-2012 "Classification for Fire Performance of Building Materials and Products", with an oxygen index of ≥28%. No toxic gases are released during combustion, and it has passed the smoke density test (smoke density grade ≤75), meeting the safety requirements of densely populated places.

Mechanical strength: The composite structure design makes the density of the air duct only 30-40 kg/m³, which is over 60% lighter than traditional air ducts. Meanwhile, the compressive strength is ≥250 kPa and the tensile strength is ≥150 kPa, capable of withstanding external force impacts during installation and use without easy deformation.

Sealing and moisture-proof performance: It is connected with special sealant and snap-fit, with an air leakage rate of ≤1.5% (in compliance with GB 50243-2016 standard). Moreover, polyurethane is non-absorbent, moisture-proof and mold-proof, preventing condensation on the inner wall of the pipe and the breeding of bacteria, ensuring air quality.

Commercial buildings: Suitable for office buildings, shopping centers, high-star hotels, etc., meeting the demands of large-scale ventilation and constant temperature and humidity. For instance, the central air conditioning supply air system in shopping malls can reduce cooling loss and enhance the comfort experience.

Industrial field: It is suitable for electronic clean workshops, food processing plants, pharmaceutical workshops, etc. Due to its good insulation and no dust shedding, it can ensure the cleanliness of the production environment and withstand slight corrosion in industrial environments at the same time.

Public facilities such as hospitals, schools, subways, and airports have high requirements for safety, flame retardancy, and low noise. This air duct meets the flame retardancy standards and has low air resistance (friction resistance coefficient ≤0.018), with low operating noise, making it suitable for use in public Spaces.

Civil buildings: Household central air conditioning systems for high-end residences and villas are easy to install, occupy little space, can be flexibly adapted to complex house types, and are environmentally friendly and odorless, meeting the health needs of home living.

Cost advantage: The lightweight feature reduces installation time by 30% to 40%, eliminating the need for additional insulation construction. The overall installation cost is 20% to 25% lower than that of traditional air ducts.

Technical advantages: The composite structure integrates insulation, protection and sealing functions, offering more stable performance and lower maintenance costs.

Strong adaptability: Supports customization of various cross-sectional sizes such as circular and rectangular (diameters ranging from 100 to 1600mm), which can meet the design requirements of different HVAC systems, and can operate stably in an environment ranging from -40 ℃ to 80℃.

Service life: Polyurethane material is resistant to aging and ultraviolet rays. Its normal service life can reach 15 to 20 years, which is 5 to 8 years longer than that of traditional air ducts. This reduces the frequency of replacement and lowers the total life cycle cost.