Thanks to its excellent products and quality services, UNT Duct is one of the leading pu rectangular ductwork 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.
PU Rectangular Ductwork
PU rectangular ductwork is a modern, high-performance alternative to traditional sheet metal ducts for Heating, Ventilation, and Air Conditioning (HVAC) systems. Its key innovation is that it comes pre-insulated-the thermal insulation is an integral part of the duct panel itself, eliminating the need for a separate, external wrapping layer.
The performance of this ductwork comes from its three bonded layers, which work together as a single unit:
The Core (Polyurethane Foam): This is the heart of the duct. The rigid closed-cell PU foam is an exceptional thermal insulator, with a thermal conductivity as low as 0.020 W/m·K . This closed-cell structure also makes it highly resistant to moisture absorption, preventing issues like mold growth and corrosion.
The Facings (Aluminum Foil): Both the inside and outside surfaces are typically covered with a layer of aluminum foil, usually 60-80 microns thick . The smooth inner lining reduces air resistance (friction loss), improves hygiene, and prevents particle buildup, making it suitable for cleanroom environments . The outer foil provides durability and a finished look.
Why Choose PU Rectangular Ductwork?
This system offers several significant benefits over traditional metal ducts that are insulated after fabrication:
Space Saving: Its design allows for a thinner overall wall thickness compared to a metal duct with external insulation wrapped around it. This saves valuable ceiling plenum space, which is a major advantage in modern construction .
Energy Efficiency: The excellent thermal conductivity of the PU core minimizes thermal bridging (heat loss through metal components) and reduces energy loss by up to 40% compared to poorly insulated systems.
Lightweight: The panels are significantly lighter than equivalent metal ducts with insulation, making them easier to handle, faster to install, and reducing the load on the building's structural supports.
Faster Installation: Fabricating and installing PU ductwork can cut labor time by 50-70% . The process involves cutting the panels, folding them, and sealing the joints with specialized adhesives and tapes, eliminating the need for heavy metalworking or separate insulation work.
Quiet Operation: The dense PU foam core acts as a sound damper, absorbing vibration and reducing the noise from fans and moving air, contributing to a quieter indoor environment.
What is PU Pre-insulated Ductwork System?
The UNTDuct PU System stands apart as the most advanced and innovative pre-insulated air distribution ductwork solution worldwide. Proven for its ease of installation and maintenance, it represents a breakthrough in air distribution technology.
More than just pre-insulated PU aluminum panels, the UNTDuct PU Ductwork System is a comprehensive solution - complete with precision-engineered accessories, specialized machinery, purpose-built tools, and expert know-how - ensuring flawless construction and installation.
PU Panels
High-performance sandwich panels featuring rigid polyurethane (PU) insulation, fully clad with durable aluminum foil or aluminum sheets for superior duct construction.
Accessories:
Flanges, section bars, and specialized fittings designed for seamless duct joining and installation.
Equipment:
State-of-the-art bending machines, manual cuting tools and CNC Router Machine, enabling professional fabrication and installation-whether in a fully equipped workshop or directly on-site.
Know-How:
We provide unparalleled technical and commercial support to consultants and contractors, guaranteeing optimal system performance.
How to make PU Rectangular Ductwork
The fabrication process of Pre-insulated Air Ducts
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