Nagase RooTac TOTAKU Ducting Hoses BELLOWS Duct

Manufacturer: Nagase RooTAC Industries, Inc.
Model: BELLOWS Duct

Feature

  • Can be expanded and contracted freely, allowing for storage at approximately one-third of its size.
  • Lightweight despite its large diameter, making it easy to transport.
  • Ideal for air supply and exhaust in manhole and tunnel construction work.
  • Effective for air supply, exhaust, and dust collection in various fields.
  • Suitable for drainage purposes (for surface-level drainage).

Standard Dimensions and Properties

Nominal DiameterInner DiameterOuter DiameterPitchReference WeightLengthAllowable Pressure
(at room temperature)
Allowable Vacuum Pressure
(at room temperature)
Allowable Bend Radius
(to the center axis of the hose)
inchmminchmminchmminchmmlbs/ftg/mfeetmpsiMPainHgkPainchmm
1435013.78350.014.45367.01.9750.02.71404032100.730.005-0.40-1.3513.78350
1640015.75400.016.46418.02.3660.03.27486032100.580.004-0.28-0.9515.75400
1845017.72450.018.46469.02.3660.03.71552032100.580.004-0.28-0.9517.72450
2050019.69500.020.47520.02.3660.04.15618032100.440.003-0.28-0.9519.69500
22*55021.65550.022.44570.02.3660.04.87725032100.440.003-0.21-0.7021.65550

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