Fabric quality decides the performance of flexible ventilation duct because appropriate fabric grade is the key to withstand high air pressure effectively and convey fresh air efficiently.

Therefore, for every engineered project, kinds of chemical performance and dimension that fabric owned are of significance. 
Sulong with self-developed PVC production line is capable of manufacturing flexible ventilation duct with multiple custom options to fulfill your requirements in budget and quality.

Fit To All Tunneling Applications

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Metro

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Railway

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Highway

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Hydropower Station

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Hydraulic Engineering

Tunnel Ventilation Ducting System

Lay flat duct

Lay Flat Ventilation Duct

Round lay flat ventilation duct as the portable flexible duct with custom choices(diameter, length and fabric material) meets your quality requirement and project budgets.

oval ventilation duct

Oval Ventilation Duct

Oval ventilation duct as the portable flexible duct with custom choices(diameter, length and end connection) meets your quality requirement and project budgets.

Semi rigid ventilation duct

Semi Rigid Ventilation Duct

Round and square spiral ventilation duct strengthened by hard-drawn steel or spring steel that can be bent withstand high pressure and handles the rigor of mine and tunnel projects.

Fiberglass rigid duct

Fiberglass Rigid Vent Duct

Fiberglass Rigid duct is a flexible, interlocking duct solution for tunnel and mining application by constructing from filament wound fiberglass roving and reinforced with polyester fibers.

Our Case

Guangzhou Metro Project
Flexible Ventilation Duct
Long tunnle project in Xingjiang
PVC Ventilation Duct for TMCLK HongKong

Make Your High-Flow Ventilation Duct With Our Experts' Help!