Spiral Ventilation Duct

Spiral Ventilation Duct

Spiral Ventilation Duct

S ulong Spiral Ventilation Duct is also called Negative flow duct, Flexible Ducting or Simi-rigid Duct. It is used for both positive and negative pressure application of underground tunnel and mining projects. It is produced based on positive flow ducting, it installs hard-drawn steel or spring steel as frame on the lay flat ducting to support it withstand high pressure. The diameter can be customized from 150 mm to 2,000 mm and length for every piece is 1 m to 20 m.


ASK FOR QUOTE pdf-icon  

Specifications

PVC Fabric SL-PFD-Ⅲ SL-PFD-Ⅱ SL-PFD-TⅢ SL-PFD-TⅡ SL-PFD-TⅠ
Threads & Yarn 500D×840D 1000D×1000D 1000D×1000D 1500D×1500D 2000D×2000D
9×12 9×12 12×12 9×12 9×9
Total Weight 420±20 500±20 550±20 600±20 700±20
Color Yellow / Black / Green
Tensile Strength (DIN53354) Warp (N/5cm) 1000 1200 1600 1800 2600
Weft (N/5cm) 1000 1500 1900 2000 2600
Tearing Strength (DIN53363) Warp (N) 220 320 500 650 720
Weft (N) 300 380 500 680 720
Working Temperature -30℃ ~ +80℃
Flame Retardant NFPA701:2015, DIN 4102 B2
Inside Diameter 150 mm - 2,000 mm
Length 1 m - 20 m
Standard Pitch 75 mm for exhausting, 150 mm for blowing
Wire Hard-Drawn steel / Spring Steel
End Finish Zipper / Steel Ring / Velcro
Conductivity ≤108 Ω (both for Black and Yellow)
* We hereby state that the above data is only for reference, allowing 5% tolerance.
  • Working temperature: -30 ~ 80 .
  • Diameter: 600 mm~3200 mm 
  • Standard Length: 5 m~200 m
  • Standard color: Yellow, Black, Green
  • Connection: Zipper, End Coil, Eyelet, Velcro

S L is also called Negative flow duct, Flexible Ducting or Simi-rigid Duct. It is used for both positive and negative pressure application of underground tunnel and mining projects. It is produced based on positive flow ducting, it installs hard-drawn steel or spring steel as frame on the lay flat ducting to support it withstand high pressure.

The diameter can be customized from 150 mm to 2,000 mm and length for every piece is 1 m to 20 m. Kind of connection can be customized: Zipper, Steel Ring, Eyelet and Velcro.

Five different types of PVC coated fabric to meet different models of ventilation fans and the fabrics can be flame retardant and anti-static. Also other fabric specification can be customized according to clients' requirement.

Quality standard abides by GB/T 9900-2008, NFPA 701, MA and SGS.

Usage Underground project of coal mines, tunnels, subway and so on.
  • Large air flow
  • Long distance air supply
  • Low air leakage
  • Low air resistance
  • Long service life
  • Easy installation
  • Safe and Environmental protection
  • Great value

Products You Might Like

Lay Flat Ventilation Duct

Lay Flat Ventilation Duct

Flexible Ventilation Ducting

Flexible Ventilation Ducting

Special Shaped Ventilation Duct

Special Shaped Ventilation Duct

Ventilation Hose Fabrics

Ventilation Hose Fabrics