Thanks to its excellent products and quality services, UNT Duct is one of the leading rigid pir foam pre-insulated 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.

Rigid PIR Foam Pre-insulated Duct

As a contractor, you are well aware that conventional sheet metal ductwork involves cumbersome multi-stage procedures and heavy labour costs. Separate steps including duct fabrication, delivery, as well as on-site fitting of insulation and vapour barriers collectively drive up project timelines and overall expenses. Rigid PIR (Polyisocyanurate) foam pre-insulated ducts serve as a modern, high-performance substitute that greatly simplifies the full workflow.

This integrated HVAC system is an all-in-one premium solution engineered to cut down your installation hours, lighten structural load of buildings, and provide outstanding energy efficiency for your customers.

What Is Rigid PIR Foam Pre-insulated Duct Panel?

You can regard it as an all-in-one duct solution. It is a composite sandwich panel with a rigid PIR foam core permanently laminated between two robust facings, most commonly embossed aluminium foil. Thanks to this integrated structure, the duct frame, thermal insulation, air barrier and vapour barrier are combined into one single lightweight panel.

Key Advantages of Rigid PIR Foam Pre-insulated Duct for the Job Site

1. Fast & Easy Installation

Lightweight Material

PIR duct panels are far lighter than conventional metal ductwork. A standard PIR panel weighs roughly 1.4 kg/m², while a 0.8 mm steel duct weighs around 6.5 kg/m². The lightweight characteristic simplifies lifting, cutting and installation procedures with greater safety, cutting demand for heavy machinery and labour.

On-site Custom Fabrication

Special tools allow on-site cutting, V-grooving and folding of panels to fabricate straight ducts, elbows and branch fittings. Minor modifications can be completed directly on site, removing extra time and costs for off-site workshop rework.

One-step Installation

Thanks to integrated insulation, the separate process of wrapping insulation around metal ducts is eliminated. This drastically shortens labour hours and lowers risks of thermal bridging or insulation damage.

2. Outstanding Technical Performance

High Energy Efficiency

PIR foam features ultra-low thermal conductivity (0.020–0.022 W/m·K). It delivers premium thermal insulation with a slimmer panel thickness versus most alternative materials. Stable air temperature is maintained, energy loss is minimised, and building operational expenses are reduced for property owners.

Reliable Fire Resistance

PIR foam possesses inherent excellent fire performance. Instead of melting or dripping when exposed to fire, it carbonises to form a protective char layer that restricts flame propagation. Our duct systems comply with strict global standards including BS 476 Class 0 and ASTM E84 Class A.

Long Service Life & Sanitary Properties

The closed-cell foam core paired with aluminium foil facings forms a sturdy vapour barrier that repels moisture penetration and suppresses mould formation. The smooth inner aluminium surface is easy to clean, fibre-free and hygienic, perfectly suited for hospitals and cleanroom facilities.

Optimised Sound Insulation

The dense foam core absorbs airflow and mechanical equipment noise, creating a quieter indoor environment compared with all-metal duct systems.

3. Space-saving Structure

As insulation is built into the panel, PIR ductwork can be mounted closer to ceilings. It maximises available plenum space and may even lower the required inter-floor height during building construction.