Fire Retardant Flexible Duct | Flame-Resistant PVC Negative Pressure Duct for Shipbuilding & Tunnel Ventilation
Core Technology & Compliance
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Material: Heavy-duty orange PVC with UL94 V-0 flame retardant certification.
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Structure: Double-layer spiral steel wire wrapped in black rubber strips for enhanced abrasion resistance (wire spacing: 6cm).
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Pressure Resistance: Withstands -30kPa negative pressure, ideal for ship engine rooms and tunnel exhaust systems.
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Certifications: ISO 9001.
Why Choose This Duct?
✅ Zero Flame Spread: Self-extinguishing material prevents fire propagation in confined spaces (e.g., ship cabins).
✅ Corrosion Defense: Resists saltwater, chemicals, and high humidity – critical for marine engineering.
✅ Customizable: Tailor diameter (100-1500mm), length, and fittings for HVAC, welding fume extraction, or emergency smoke ducts.
fire retardant shipbuilding duct
The Fire Retardant Flexible Duct is engineered for high-risk environments requiring flame resistance and extreme durability. Specifically designed for shipbuilding negative pressure ducts, underground air transfer, and emergency ventilation, this orange PVC duct features spiral steel wire reinforcement and black rubber-coated abrasion protection. Available in 5m/10m lengths with diameters from 100mm to 1500mm.
Related Parameters
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Material |
PVC |
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Diameter |
100mm-1500mm （Custom diameters available） |
|
Length |
5m,10m,（Custom lengths available） |
|
Temperature range |
-15℃ to 80℃ |
|
Color |
Black（Custom color available） |
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Connection |
Magic tape, zipper |
Product Advantages
1. Superior Fire Safety Compliance
UL94 V-0 Certified Material
Engineered with self-extinguishing orange PVC, this duct meets stringent fire retardant standards, preventing flame propagation in high-risk areas like ship engine rooms and underground tunnels.
Zero Smoke Emission
Even under extreme heat (up to 120°C), the material resists toxic smoke release, critical for fire rescue operations and confined spaces compliance
2. Unmatched Durability for Harsh Environments
Spiral Steel Wire + Rubber Armor
Double-layer galvanized steel wire (6cm spacing) wrapped with black abrasion-resistant rubber strips ensures structural integrity under continuous negative pressure (-30kPa), ideal for shipbuilding ventilation systems and mining ducts.
Corrosion & Chemical Resistance
Withstands saltwater, acidic fumes, and high humidity, making it the top choice for marine engineering and chemical plant exhaust applications.
3. Precision Engineering for Critical Scenarios
Negative Pressure Optimization
Reinforced wire spacing prevents collapse during high-volume air extraction, ensuring stable airflow in tunnel municipal projects and welding fume extraction.
Temperature Resilience
Operates seamlessly from -30°C to +120°C, adaptable to Arctic shipyards or high-temperature metal workshops.
4. Customization & Cost Efficiency
Tailored to Your Project
Available in diameters from 100mm to 1500mm, with standard lengths (5m/10m) or custom sizes (MOQ 50 units) for specialized HVAC or emergency smoke ducts.
Easy Installation & Maintenance
Lightweight yet robust design reduces labor costs, while the smooth inner surface minimizes dust accumulation for long-term airflow efficiency.
Application Scenario
Shipbuilding Negative Pressure Ducts
Engine room ventilation & welding smoke extraction in shipyards
Emergency Fire Rescue Systems
Rapid smoke evacuation in tunnels, basements, and high-rise buildings.
Municipal Tunnel Engineering
Corrosion-resistant airflow management in subway and drainage projects.
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