• oval ventilation duct
  • oval flexible duct
  • Oval Flat Duct 02
  • Oval Flat Duct 01
  • lay flat duct 5
  • lay flat duct 9
  • oval ventilation duct
  • oval flexible duct
  • Oval Flat Duct 02
  • Oval Flat Duct 01
  • lay flat duct 5
  • lay flat duct 9

Oval Ventilation Duct

  • • Available in lay flat and semi-rigid ventilation duct, suitable for both positive and negative pressure airflow.
  • • Maximize available duct space and increase headroom in drift/tunnel by 25% to accommodate tunnel height.
  • • High-strength welded construction provides exceptional airflow performance.
  • • Flame retardant standards NFPA701:2015 and DIN 4102 B2 approved.
  • • Diameter: 600 mm ~ 2000 mm (Custom diameter available).
  • • Standard Length: 1 m~50 m(Custom length available).
  • • End connection: zipper / Velcro/ steel ring / eyelets.
  • • Antistatic fabric optional.

Standard Technical Specifications

PVC FabricSL-PFD-ⅡSL-PFD-TⅢSL-PFD-TⅡSL-PFD-ⅠSL-PFD-TⅠ
Threads & Yarn1000D×1000D1000D×1000D1300D×2000D2000D×2000D2000D×2000D
9×99×99×99×912×12
Total Weight (gsm)500±20550±20550±20600±20700±20
ColorYellow / Black / Green / Orange
Tensile Strength
(DIN53354)
Warp (N/5cm)10001150180026003100
Weft (N/5cm)12001400200028003800
Tearing Strength
(DIN53363)
Warp (N)240260350650820
Weft (N)320350400700960
Working Temperature-30℃ ~ +80℃
Flame RetardantNFPA701:2015, DIN 4102 B2
Inside Diameter200mm – 3200mm
Section Length1m – 300m
End FinishZipper / Steel Ring / Velcro / Eyelets
Anti-static≤10 ^8 Ω (if required)

India Hydropower Project
Nepal Hydropower Project 01
Oval Flat Duct 03

Application

  • • Mining projects
  • • Metro projects
  • • Highway projects
  • • Railway projects
  • • Hydropower station projects
  • • Water diversion projects
  • • Underground oil storage projects
  • • Other underground projects requiring ventilation.

Other Parts of An Underground Ventilation Ducting System

Adapter Duct 01

Adapter Duct

Duct adapter changes the ducting system from a bigger size to a smaller one and vice versa. It minimizes airflow leakages and material costs as the connection between the extractor fan and the duct.

Bend Duct 1

Bend Duct

Available in angles such as 30, 45, 65 and 90 degrees, duct bends flexibly adjust the sharp turns of airflow direction.

Tee WYE Duct 1

Tee and WYE Duct

Degree refers to the angle between the straight duct flow and the branch. Branches of 30, 45, 60, and 90-degree angles, so do the Tee and WYE ducts.

Customize YOUR Ventilation Duct

Every parts of the ventilation ducting system matter. Sulong ventilation duct with multiple custom options fulfills your requirements in budget and quality.

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Duct Size

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Fabric Performance

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End Connection

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Suspension Seam

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