NUOENWEI Fiberglass High-Temp Duct | Flexible Insulated Ventilation Hose -45°C to 300°C
NUOENWEI Fiberglass High-Temp Duct represents the professional-grade solution for industrial ventilation challenges requiring both thermal endurance and mechanical toughness. Unlike standard PVC or polyurethane ducts that degrade rapidly under heat stress, this fiberglass duct features a composite construction that maintains flexibility while resisting temperatures up to 300°C continuously .
The external galvanized steel spring helix serves dual functions: structural reinforcement for crush resistance and an abrasion barrier that allows the duct to be dragged across concrete floors, gravel, and scaffolding without compromising the internal layers . Available in insulated (three-layer) and non-insulated configurations, with optional upgrades for 400°C and specialized 1200°C ceramic fiber construction for intermittent high-heat spikes.
NUOENWEI Fiberglass High-Temp Duct
The NUOENWEI Fiberglass High-Temp Duct is a heavy-duty flexible ventilation solution built for professionals who cannot compromise on thermal safety or durability. At its core, the duct utilizes premium glass fiber fabric—a material inherently flame-retardant and resistant to oils, solvents, and acidic exhaust gases
The insulated variant features a triple-layer composite architecture: an inner fiberglass layer for heat resistance, a middle insulation layer for thermal retention, and an outer wear-resistant jacket protected by the steel helix. This construction minimizes heat loss during conveyance while providing exceptional vibration dampening for engine and compressor applications .
With inner diameters spanning 80mm to 1000mm, standard lengths of 3.6m or 7.6m, and color options including gray, yellow, black, and blue, NUOENWEI adapts to diverse industrial requirements. The duct remains fully flexible and bendable to tight radii without kinking or collapsing, allowing installation in complex spatial configurations .
Related Parameters
| Attribute | Specification |
|---|---|
| Brand | NUOENWEI |
| Product Type | Fiberglass High-Temp Duct |
| Temperature Range (Standard) | -45°C to +300°C (continuous) |
| Temperature Range (Optional) | Up to 400°C / 1200°C (intermittent) |
| Minimum Inner Diameter | 80mm |
| Maximum Inner Diameter | 1000mm |
| Standard Lengths | 3.6m / 7.6m (custom lengths available) |
| Construction | Fiberglass fabric, composite foil, external steel wire helix |
| Insulation Option | Insulated (3-layer) / Non-Insulated |
| Available Colors | Gray, Yellow, Black, Blue |
| Key Properties | Flame-retardant, chemical resistant, abrasion-resistant, anti-vibration, flexible |
| Certification | ISO9001 |
| Place of Origin | Guangdong, China |
| MOQ | 5 meters |
| ODM / OEM | Available |
Product Advantages
- Extreme Thermal Performance with Flexibility. The standard configuration handles continuous operation from -45°C to 300°C—a range that exceeds most industrial flexible ducts. For specialized applications, upgraded insulation extends capability to 400°C, while ceramic fiber construction accommodates intermittent spikes up to 1200°C. Despite this thermal range, the duct remains fully bendable and compressible for storage and installation .
- External Steel Helix for Drag Protection. The galvanized steel spiral is not merely a support structure; it serves as a sacrificial wear surface. The duct can be dragged across job site floors, gravel, and scaffolding without tearing the fiberglass jacket. This design dramatically extends service life in construction and temporary heating applications where repositioning is routine .
- Triple-Layer Insulated Construction. The insulated variant incorporates a middle layer that enhances thermal retention during hot air conveyance. This reduces energy loss and maintains delivery temperature over longer runs—critical for temporary heating systems and industrial drying processes .
- Chemical and Flame Resistance. The fiberglass substrate is inherently flame-retardant, meeting most industrial fire safety codes without additional treatments. It also exhibits excellent resistance to oils, solvents, and acidic exhaust gases commonly encountered in engine testing, chemical processing, and welding environments .
- Vibration Dampening for Mechanical Systems. Engineered to absorb the mechanical vibration generated by engines, compressors, and blowers, the duct prevents stress transfer that can cause premature failure in rigid ducting systems. This makes it particularly suited for mobile equipment and portable heater connections .
- Structural Integrity Under Pressure. The robust steel helix allows the duct to support its own weight across long spans and resist crushing under foot traffic. It maintains its circular cross-section under both positive and negative pressure without collapsing or kinking .
- Customizable to Project Requirements. Beyond standard diameters (80mm–1000mm) and lengths (3.6m/7.6m), NUOENWEI offers color customization for volume orders and ODM/OEM services. Yellow is particularly useful for enhancing on-site safety visibility .
Application Scenario
- Temporary Heating & Construction Site Warming. The most demanding application for this duct is connection to portable gas or oil-fired indirect heaters for temporary building heat. The duct conveys hot air from the heater to the distribution point, delivering warmth to structures under construction, renovation, or repair. For ground thawing applications during winter construction, the high-temperature capability ensures reliable operation . Ducting for portable kerosene and oil heaters is specifically designed to route heat into tented spaces and construction sites .
- Industrial Exhaust & Fume Extraction. The duct handles exhaust gases from engines, chemical processes, and industrial ovens. Its chemical resistance makes it suitable for extracting fumes containing oils, solvents, and acidic vapors. Welding shops, chemical plants, and laboratories rely on this type of ducting for safe fume removal .
- Plastic Industry Granule Dryers. As a conductor of hot and cold air, the duct connects drying equipment to plastic granule processing systems. The thermal insulation variant maintains temperature consistency during the drying cycle, improving product quality .
- Printing, Blower & Compressor Systems. Printing machines, blowers, and compressors generate significant heat and vibration. The NUOENWEI duct absorbs vibration while handling the heated air output, protecting both equipment and work environment .
- Engine Manufacturing & Testing. For engine construction, engine warming, and dynamometer testing, the duct safely routes high-temperature exhaust. Aircraft and military applications benefit from the combination of thermal endurance and rugged construction .
- Abrasive Solids & Particulate Conveyance. The duct extracts exhaust containing abrasive solids such as dust and fibers. Applications include woodworking dust collection and metalworking fume extraction where the steel helix protects against particle wear .
- Portable Heater Connection. For heaters equipped with exhaust systems—particularly oil or gas units—the duct provides safe routing of combustion gases to prevent indoor air quality degradation. It also distributes heated air efficiently across large spaces requiring focused heat delivery .
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