• Semi rigid ventilation duct
  • Semi rigid duct 06
  • Semi rigid duct 03
  • Semi rigid duct 04
  • Semi rigid duct 01
  • oval semi rigid duct. 01
  • rectangle semi rigid duct 02
  • Semi Rigid Connector
  • Semi rigid ventilation duct
  • Semi rigid duct 06
  • Semi rigid duct 03
  • Semi rigid duct 04
  • Semi rigid duct 01
  • oval semi rigid duct. 01
  • rectangle semi rigid duct 02
  • Semi Rigid Connector

Semi Rigid Ventilation Duct

  • • Nylon fabric with both sides PVC coated, easy-installed, high-strength welded construction provides exceptional airflow performance.
  • • Spiral ventilation duct with spring steel wire (φ5mm-φ10mm) reinforced featured with wear protection and high pressure resistance.
  • • Diameter: 200 mm-2,500 mm (Custom diameter available).
  • • Standard Length: 1 m-20 m (Custom length available).
  • • End connection: zipper / Velcro/ steel ring.
  • • 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)

Haolebaoji Jian Raiway Projects
Flexible Ventilation Duct
tunnel project flexible duct

Application

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

fitting 7

Steel Ring End

fitting 12

Zipper End

fitting 11

Velcro End

fitting 4

Steel Clamp

fitting 5

PVC Rubber Clamp

fitting 6

Carabiner Snap Hook

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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Spring Steel Wire Pitch

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