Name: PIP Duct Panel Suppliers and Manufacturers - China Factory - UNT Duct
Brand: UNTDuct
SKU: 305866255

Thanks to its excellent products and quality services, UNT Duct is one of the leading pip duct panel 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.

PIP Duct Panel

PIP Duct Panel is pre-insulated rigid foam board for HVAC air ducts, made of high-density PIR foam with dual-sided aluminum foil. Lightweight, low thermal conductivity, easy cutting and installation, saving labor and long-term energy consumption for commercial ventilation systems.

Structure: Silver Aluminum/ PU Foam/ Silver Aluminum
Size: 4000*1200*20mm
Foam Density: 50kg/m3
Aluminum Thickness: 0.06mm or 0.08mm
Aluminum Color: Silver
Packing: 10 sheets/ package
Loading Capacity: 710 sheets/ 40'HQ (packed with plastic bags)
660 sheets/ 40'HQ (packed with cardboard box)

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Our Honor & certificate

Since its establishment in 2013, UNT has obtained 17 patents and earned numerous industry honors. We are also certified to the ISO 9001, ISO 14001, and ISO 45001 international management standards.

December 2020: Awarded the National High-Tech Enterprise Certificate and the Fujian Provincial High-Tech Enterprise Certificate

December 2023: Awarded the National High-Tech Enterprise Certificate and the Fujian Provincial High-Tech Enterprise Certificate

November 2024: Listed in the Fujian Provincial List of Specialized, Refined, Differentiated and Innovative Small and Medium-Sized Enterprises

UNTDuct ISO 9001 2015

UNTDuct ISO 14001 2015

UNTDuct ISO 45001 2018

Fire Safety GB 8624-2012

Fire Safety BS476 Part6&7

Fire Safety ASNZS 1530.3

Thermal Conductivity

PID Panel Physical Property

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Raw material structure and physical parameters of PIP Duct Panel

The main body of the PIP duct panel is made of high-density PIR polyurethane rigid foam core material, with a double-sided composite micro-micron embossed aluminum foil protective layer. The core material density of this industry standard remains stable at 45–52 kg/m³, different from the low-density specification of ordinary PU panels at 32–38 kg/m³.

The thermal conductivity is as low as 0.018–0.022 W/(m・K), and the insulation performance at room temperature is improved by more than 35% compared to the galvanized iron sheet with glass wool on the outside. The standard thickness of the panel is 10/20/25/30/40mm. The single 20mm-thick item weighs only 1.1–1.3kg at room temperature, and the weight is 1/7 of the traditional iron sheet duct.

The thickness of the aluminum foil layer is 60/80–200μm, with a water vapor permeability of ≤0.01 g/(㎡・24h), which can prevent water vapor from penetrating the air and eliminate condensation dripping on the inner wall of the duct. The core material has a closed-cell rate of ≥95%, with a uniform and stable bubble structure, and will not have problems such as bubble collapse or insulation layer detachment during long-term use.

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Construction Installation and Labor Cost of PIP Duct Panel

Traditional galvanized iron sheet ducts require five processes: cutting, edge folding, flange riveting, external insulation application, and tape wrapping. It takes 2.5 working hours to complete the entire production of a 10㎡ duct; while PIP materials only require three steps: CNC cutting, edge folding, and joint sealing. For the same area, it only takes 0.8 working hours, directly reducing labor costs by 68%.

The materials can be cut into arcs, changed in diameter, and three-way irregular parts on-site, eliminating the need for custom processing in a prefabrication factory, thus shortening the project duration by 30%–40%. The standard plate size is 1200×3950mm, and a single person can handle and install it without the need for lifting equipment; a 2-meter section of iron sheet duct requires 2–3 people to work together for hoisting.

The accessory system is standardized, with integrated aluminum foil tape, plug-in flanges, and sealing strips, eliminating the need for additional purchases of insulation cotton, wire ties, and waterproof sheet materials, resulting in a 22% reduction in overall material procurement costs.

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Why choose UNTDuct

UNT Pre-insulated Ductwork

Packaging and loading of Duct Panel

Specification

Item	Unit	Specification
Standard Panel Size	mm	3950x1200x20
Alu. Foil Thickness	mm	0.06 or 0.08
PIR Foam Density	kg/m³	50-55
Fire Safety (BS476Part 6&7)		Class 0
Thermal Conductivity	W/(m·K)	0.020
Compressive Strength	MPa	0.2
Bending Strength	MPa	2
Water Absorption	%	0.36
Dimension Change	%	0.3
Working Temperature	℃	-60 to +80
Max Pressure in duct	Pa	1500
Maximum Allowable Wind Velocity	m/s	≤15
Max Continuous Running Temperature	℃	≤70
Lifespan of PIR Air Duct	years	>20

PRE-INSULATED DUCT vs G.I. DUCTWORK

Metric	20mm PIR Pre - Insulated Duct (with 0.08mm Alu. Foil, )	0.5mm G.I Duct + 30mm Rubber Plastic (40-90kg/m³)
Fire Safety	Compliant (Class 0/BS 476, AS 1530.3). Self-extinguishing PIR core, low toxic smoke, non-combustible alu foil.	G.I non-combustible; rubber plastic fire-retardant but requires coating to meet strict codes.G.I
Thermal Insulation	Excellent. λ=0.020 W/m·K, no thermal bridging. 20mm integrated structure ensures consistent insulation.	Fair. λ=0.035 W/m·K, thermal bridging at G.I joints. 30mm insulation offset by metal conductivity.
Hygiene & Air Quality	Superior. Non-porous alu foil, smooth inner surface, moisture-resistant PIR. Meets cleanroom/hospital standards.	Poor. Porous rubber plastic traps dust/mold; G.I-insulation gaps breed pathogens.
Lightweight	1.4-1.5 kg/m². Ultra-light, reduces structural load; ideal for retrofits/timber-framed buildings.	5.1–6.3 kg/m². Heavy G.I base + bulk insulation; requires reinforced supports.
Energy Efficiency	Excellent. 20–30% lower HVAC energy consumption. Minimizes heat gain/loss in conditioned air.	Low. 20–30% higher energy loss due to inferior insulation and thermal bridging.
Ease of Construction	Easy. Factory-prefabricated tongue-and-groove joints. No separate insulation step; 40–60% less labor time.	Complex. Two-step on-site process: G.I duct fabrication + rubber plastic wrapping. Labor-intensive, prone to gaps.
Quiet Operation	Good. PIR core absorbs 10–15 dB airflow noise; alu foil dampens vibration.	Fair. Rubber plastic provides basic sound reduction, but G.I vibration and insulation gaps reduce efficiency.
Space Savings	Excellent. 20mm total thickness (all-in-one). Fits tight ceilings/retrofit cavities.	Poor. 30.5mm total thickness (0.5mm G.I + 30mm insulation). Bulky, requires larger installation space.
Environmental Friendliness	Balanced. CFC/HCFC-free PIR, recyclable alu foil. 20–30-year lifespan; net carbon positive in 1–3 years.	Low. Rubber plastic non-recyclable; 10–15-year lifespan. Frequent replacement increases waste; higher energy emissions.
Air Leakage	Superior. ≤2% air leakage (EN 1507, AS/NZS 3660.1). Airtight factory joints + alu foil vapor barrier.	Poor. 5–10% air leakage. On-site sealing gaps; separate vapor barrier required.

Performance comparison based on UNT Duct product data and standard system configurations. Actual performance may vary depending on system design, installation method and project conditions.

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