Jinlong Flexible Ventilation Duct is made of high-quality PVC coated tarpaulin, featuring excellent air tightness, strong tear resistance and outstanding anti-aging performance. For ducts with diameter under 1.6 meters, we adopt one-piece molding technology. It avoids multiple fabric splicing and repeated heat sealing, effectively cutting down air leakage risk and greatly improving ventilation safety.
Lightweight and foldable, this flexible duct is easy to pack, transport and install on site. It adapts to both positive-pressure air supply and negative-pressure air extraction, widely used in mines, tunnels, underground pipe galleries and construction sites. The premium PVC tarpaulin boasts great moisture-proof and wear-resistant properties, resisting mud, dust and dampness. It can keep stable mechanical performance under long-time service in rough underground and construction working conditions.
We support full customization of diameter, length, color and connection types. Fittings including steel rings, hanging eyelets, zippers and velcro cuffs are optional. Anti-static and flame retardant (FRAS) versions are available for underground mining and tunnel hazardous conditions, and relevant test reports can be supplied to meet local safety standards.
Besides finished ducts, Jinlong also supplies raw PVC coated tarpaulin rolls for customers to produce ventilation ducts themselves. With stable quality, competitive price and reliable lead time, Jinlong is your trusted supplier of flexible ventilation products.
Features of Flexible Ventilation Duct
•The dense PVC coated tarpaulin structure minimizes air permeation loss, ensuring efficient air delivery over long distances in tunnel and mine ventilation systems.
•The tarpaulin material remains flexible at a wide temperature range, resisting cracking and hardening when used in cold or hot underground working sites.
•The PVC tarpaulin can be quickly repaired with matching repair patches if scratched or slightly damaged, reducing downtime during project operation.
•Multiple connection methods can be matched to different ventilation fan ports, enabling fast assembly and seamless linking between sections of air duct.
•It can be rolled up compactly after use. No large storage space required, which brings convenience for repeated use in short-term engineering projects.
Specifications of Flexible Ventilation Duct
| Item | Flexible Ventilation Duct |
| Brand | JLM |
| Material | PVC Polyester |
| Weight | 250gsm-2000gsm |
| Color | Orange,green,blue,yellow |
| Base Fabric | 500D×500D,500D×1000D,840D×840D,1000D×1000D |
| Density | 28×28,30×17,18×18,20×20 |
| Warp breaking strength (N/50mm) | 2594 |
| Weft breaking strength (N/50mm) | 2838 |
| Lap joint breaking strength (N/50mm) | 2290 |
| Warp tearing force (N) | 485 |
| 100 m air duct leakage rate (%) | 1.38 |
| Adhesion strength (N/25mm) | 46 |
| Air duct expansion rate (%) | 1.8 |
| Features | High tensile strength,pressure resistant,wear resistant |
| Applications | Mining ventilation duct,tunnel ventilation duct,metro ventilation duct |
| Surface Treatment | Matte / Glossy optional |
| OEM/ODM | Accepted |
| Note: color, weight, width, base fabric, surface treatment and all functional features are customizable. | |
Applications of Flexible Ventilation Duct
Jinlong flexible ventilation duct is widely used for air supply and exhaust in mines, tunnels, underground pipe galleries and construction sites.
Mining Ventilation Duct
Tunnel Ventilation Duct
Metro Ventilation Duct
FAQ of Flexible Ventilation Duct
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