• 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 Fabric SL-FPD-Ⅱ SL-FPD-TⅢ SL-FPD-TⅡ SL-FPD-Ⅰ SL-FPD-TⅠ
Threads & Yarn 1000D×1000D 1000D×1000D 1300D×2000D 2000D×2000D 2000D×2000D
9×9 9×9 9×9 9×9 12×12
Total Weight (gsm) 500±20 550±20 550±20 600±20 700±20
Color Yellow / Black / Green / Orange
Tensile Strength
(DIN53354)
Warp (N/5cm) 1000 1150 1800 2600 3100
Weft (N/5cm) 1200 1400 2000 2800 3800
Tearing Strength
(DIN53363)
Warp (N) 240 260 350 650 820
Weft (N) 320 350 400 700 960
Working Temperature -30℃ ~ +80℃
Flame Retardant NFPA701:2015, DIN 4102 B2
Inside Diameter 200mm – 3200mm
Section Length 1m – 300m
End Finish Zipper / 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!