Name: PUR Pre-insulated HVAC Ductwork Suppliers and Manufacturers - China Factory - UNT Duct
Brand: UNTDuct
SKU: 306131682

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

PUR Pre-insulated HVAC Ductwork

PUR Pre-insulated HVAC Ductwork, alternatively designated PU aluminum foil duct panel and PU sandwich duct panel, is a high-spec composite material intended for HVAC (Heating, Ventilation and Air Conditioning) air duct applications.

The product adopts a trilaminar laminated structure composed of:

Dual outer facings: High-tensile aluminum foil, supplied in plain or embossed variants

Internal core substrate: Rigid polyurethane (PU) foam, functioning as structural backing and thermal insulating medium

Structure: Silver Aluminum/ PU Foam/ Silver Aluminum
Size: 3950*1200*20mm
Foam Density: 40-45kg/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)

Send inquiry

Core Technical & Physical Properties of PUR Pre-insulated HVAC Ductwork

Technical Parameters	Typical Value / Standard	Engineering Significance
Density (Core Foam)	40-45kg/m3	Balances lightweight design with excellent compressive structural strength.
Thermal Conductivity	≤0.022w/m.k	Extremely low. Outperforms traditional glass wool (~0.040), improving thermal insulation by nearly 40%.
Fire Rating	Class B1 (GB 8624)	Meets fire safety and flame retardant requirements for most commercial and residential buildings.
Closed Cell Ratio	≥95%	Effectively blocks water vapor penetration, preventing internal mold and performance degradation.
Working Temperature	-60℃--+80℃	Adapts to various harsh environments, from extreme cold to high-temperature air transmission.

Send inquiry

Production and Installation of PUR Pre-insulated HVAC Ductwork

Factory-fabricated panels achieve uniform density and high dimensional accuracy, satisfying the specifications for standardized mass production and unified construction norms.

Field spray foaming technology is developed for non-standard duct systems and complex architectural structures. The sprayed PUR foam achieves full surface lamination without insulation voids. This core performance advantage is unmatched by other insulation materials.

From an installation perspective, PUR Pre-insulated HVAC Ductwork offers favorable processability. Its flexible properties facilitate simple cutting and fabrication, removing the reliance on large specialized equipment. The entire installation procedure can be carried out by a single operator.

Moreover, the panel possesses strong interfacial adhesion. It creates stable connections with color steel plates, steel sheets, cement mortar and other substrates, and maintains excellent anti-peeling and anti-separation performance during operation.

Send inquiry

Why choose UNTDuct

UNT Pre-insulated Ductwork

Project Case of Duct Panel

Project Case

PRE-INSULATED DUCT vs G.I. DUCTWORK

Metric	20mm PU 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 PU 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 PU. 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. PU 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 PU, 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.

Contact now

Hot Tags: pur pre-insulated hvac ductwork, China, suppliers, manufacturers, factory, customized