NUOENWEI Large-diameter Insulated Air Duct (4-59")
The NUOENWEI Large-diameter Insulated Air Duct is a professional-grade, high-performance flexible ducting system engineered for the efficient transportation of conditioned air in demanding environments. Featuring a unique triple-layer composite construction—a 0.55mm PVC-coated fabric outer layer, a 3mm composite thermal insulation core, and a 0.4mm smooth PVC inner liner—this flexible duct minimizes heat loss, prevents condensation, and reduces energy consumption.
Reinforced with helical spring steel wire and protected by an external PVC wear-resistant strip, the NUOENWEI insulated air duct delivers exceptional durability, flexibility, and thermal performance. Available in diameters from 4 inches (100mm) to 59 inches (1500mm) and standard lengths of 3m or 10m (with custom lengths available upon request), it is the ideal solution for grain storage cooling, outdoor tent air conditioning, portable AC systems, and specialty HVAC applications.
Our factory specializes in large-diameter duct production—with diameters up to 1500mm (59 inches), we have the manufacturing capacity and expertise to handle oversized custom orders for industrial-scale projects.
NUOENWEI Large-diameter insulated air duct
Engineered for Extreme Performance – Up to 59″ (1500mm) Diameter
The NUOENWEI Large-diameter Insulated Air Duct is built to meet the rigorous demands of industrial air conditioning and ventilation systems. Whether you are cooling massive grain silos, conditioning air in outdoor tents, or operating portable HVAC units in challenging environments, our large-diameter insulated duct delivers unmatched thermal efficiency and structural integrity.
Why Choose NUOENWEI Large-diameter Ducting?
- Massive Diameter Range: From 4″ (100mm) to a whopping 59″ (1500mm)—our factory has the capability to produce large-diameter ducts that few competitors can match.
- Triple-Layer Insulation: 0.55mm PVC-coated fabric outer layer + 3mm composite insulation core + 0.4mm smooth PVC inner liner for minimal heat loss (thermal conductivity ≤0.035 W/(m·K)).
- Superior Durability: Helical spring steel wire reinforcement (3.5mm diameter) with external PVC wear-resistant strip over the spiral—total wall thickness 4mm.
- Flexible Connection: 10cm wire-free soft connector at each end with tightening clamps for easy installation.
- Wide Temperature Range: Operates efficiently from -15℃ to +80℃.
- Customizable: Available in multiple colors (yellow, gray, white, blue, red, black, green, orange) and custom lengths.
Large Diameter? No Problem.
Our advanced manufacturing facility is fully equipped to handle large-diameter duct production up to 1500mm. We have extensive experience producing oversized insulated ducts for grain storage facilities, industrial warehouses, and large-scale temporary structures. Whatever your diameter requirement, NUOENWEI delivers.
Related Parameters
| Specification | Detail |
|---|---|
| Brand | NUOENWEI |
| Product Name | Large-diameter Insulated Air Duct |
| Construction | Triple-layer: PVC outer (0.55mm) + Insulation core (3mm) + PVC inner (0.4mm) |
| Diameter Range (ID) | 4″ – 59″ (100mm – 1500mm) |
| Standard Lengths | 3m / 10m (custom lengths available) |
| Total Wall Thickness | 4mm (±0.5mm) |
| Reinforcement | Helical spring steel wire (3.5mm diameter; spacing varies by diameter) |
| External Protection | PVC wear-resistant strip over spiral wire |
| End Connection | 10cm wire-free soft connector + tightening clamps at each end |
| Temperature Range | -15℃ to +80℃ |
| Thermal Conductivity | ≤0.035 W/(m·K) |
| Standard Color | Yellow |
| Available Colors | Gray, White, Blue, Red, Black, Green, Orange |
| Certification | ISO9001 |
| Place of Origin | Guangdong, China |
| MOQ | 5 meters |
| Supply Ability | 500,000 meters/year (standard duct) |
| ODM / OEM | Available |
Product Advantages
Superior Three-Layer Thermal Insulation
The 3mm composite insulation core delivers exceptional thermal retention with a thermal conductivity of ≤0.035 W/(m·K). This translates to less than 5% cold loss over standard runs, compared to over 30% loss with uninsulated ducts. The result: reduced compressor cycling, lower energy costs, and extended equipment life.
Massive Diameter Capability – Up to 1500mm
With diameters ranging from 100mm to 1500mm (4″ to 59″), our large-diameter insulated air duct is one of the most versatile on the market. Our factory is specially equipped to handle oversized orders, making us the go-to supplier for industrial-scale projects requiring large-diameter ducting.
Exceptional Durability and Abrasion Resistance
The outer layer is constructed from 0.55mm PVC-coated fabric, reinforced with a helical spring steel wire (3.5mm diameter), and protected by an external PVC wear-resistant strip over the spiral. This rugged construction ensures the duct withstands harsh environments, repeated handling, and continuous operation without degradation.
Flexible and Easy to Install
Despite its robust construction, the duct remains highly flexible, allowing for easy routing around obstacles and tight spaces. The 10cm wire-free soft connector at each end, equipped with tightening clamps, enables quick and secure connections to air conditioning units, grain chillers, and ventilation systems.
Flame Retardant and Corrosion Resistant
Manufactured from Class B flame retardant polyvinyl chloride and high-carbon spring steel, the duct offers excellent fire safety and corrosion resistance. It is tear-resistant, acid-resistant, waterproof, and environmentally friendly—non-toxic with no air leakage.
Customizable to Your Exact Specifications
We offer complete customization—choose from multiple colors (yellow, gray, white, blue, red, black, green, orange), specify your required length (standard 3m or 10m, or custom), and select your diameter. ODM and OEM services are available for specialized requirements
Application Scenario
Grain Storage and Silo Cooling
The NUOENWEI large-diameter insulated air duct is widely used with grain chillers to cool massive grain silos and storage facilities. The thermal insulation prevents condensation and maintains precise temperature control, ensuring grain quality and reducing spoilage. For large-diameter silos, our oversized ducts (up to 1500mm) provide the airflow capacity needed for efficient cooling.
Outdoor Tents and Temporary Structures
Ideal for outdoor event tents, military shelters, and emergency response structures, this duct efficiently delivers conditioned air from portable AC units to maintain comfortable temperatures in large temporary spaces.
Portable and Mobile Air Conditioning Systems
Specifically designed for use with portable and mobile air conditioning units, the duct serves both suction and exhaust functions, ensuring efficient air delivery in applications where flexibility and insulation are critical.
Industrial and Commercial HVAC
Perfect for warehouses, factories, workshops, and large commercial spaces requiring efficient air distribution. The large-diameter options make it particularly suitable for high-volume air movement in industrial settings.
Specialty Air Conditioning Applications
Used in environments requiring strict temperature and humidity control, including:
- Pharmaceutical manufacturing and storage (GMP compliance)
- Electronic and semiconductor production facilities
- Food processing and cold chain logistics
- Laboratories and research facilities
- Hospitals and medical institutions
- Data centers and server rooms
Frequently Asked Questions
Contact person: Elaine Guo
Tel.: +8615875732388
E-mail: sales@fsnuowei.com
Add: No. 39 Xingjiao Road, Hecheng Street, Gaoming District, Foshan City, Guangdong Province,China