Nagase RooTAC (TOTAKU)
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 Diameter | Inner Diameter | Outer Diameter | Pitch | Reference Weight | Length | Allowable Pressure (at room temperature) | Allowable Vacuum Pressure (at room temperature) | Allowable Bend Radius (to the center axis of the hose) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| inch | mm | inch | mm | inch | mm | inch | mm | lbs/ft | g/m | feet | m | psi | MPa | inHg | kPa | inch | mm |
| 14 | 350 | 13.78 | 350.0 | 14.45 | 367.0 | 1.97 | 50.0 | 2.71 | 4040 | 32 | 10 | 0.73 | 0.005 | -0.40 | -1.35 | 13.78 | 350 |
| 16 | 400 | 15.75 | 400.0 | 16.46 | 418.0 | 2.36 | 60.0 | 3.27 | 4860 | 32 | 10 | 0.58 | 0.004 | -0.28 | -0.95 | 15.75 | 400 |
| 18 | 450 | 17.72 | 450.0 | 18.46 | 469.0 | 2.36 | 60.0 | 3.71 | 5520 | 32 | 10 | 0.58 | 0.004 | -0.28 | -0.95 | 17.72 | 450 |
| 20 | 500 | 19.69 | 500.0 | 20.47 | 520.0 | 2.36 | 60.0 | 4.15 | 6180 | 32 | 10 | 0.44 | 0.003 | -0.28 | -0.95 | 19.69 | 500 |
| 22* | 550 | 21.65 | 550.0 | 22.44 | 570.0 | 2.36 | 60.0 | 4.87 | 7250 | 32 | 10 | 0.44 | 0.003 | -0.21 | -0.70 | 21.65 | 550 |
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