Lay flat ventilation duct ( air forcing ventilation duct / positive pressure ventilation duct / straight length )
Lay flat Ventilation ducting material are usually used in positive pressure application for conveying fresh air to underground worksite. Lay flat ducting are widely used for ventilation in UG mining and tunnel operation. They are flexible, light in weight, easy to transport and require less manpower for installation.
We adopt hot air welding technology to make lay flat duct and for welding place, its strength can be retained to maximum extent. The coupling type can be steel ring, zipper or Velcro. The diameter can be from 10 inches to 100 inches. Our standard section length is 15ft, 30ft, 50ft, 100ft. We can also customize to make special specifications as our customers request.
For our flexible ventilation ducting, flame retardant and anti-static ducting are optional. We can customize to make the ducting material for you at first, then make the final ventilation ducting for you.
Features:
high tenacity ployester base fabric/ scrim with PVC coated on both sides.
long-time and stable anti-static. ( surface resistivity: less than 100 mega ohm. )
flame retardant ( can meet NFPA-701, B1, B2 or M2 standard ).
superior broken tensile strength and tear strength.
extremely low air leakage rate in a hundred meter.
extremely low drag coefficient in a hundred meter.
endure the temperature variation.
more fold-resistant.
easier in repairing.
pro-environmental, do not have any unpleasant odor.
Technical Characteristics for 500GSM Ducting Material |
NO | Item | Value | Unit | Test Method |
1 | Coating | PVC |
|
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2 | Base Fabric | Polyester |
|
|
3 | Color | Yellow or Black |
|
|
4 | Finished Weight | 500 +/-20 | gr/sqm | DIN 53352 |
14.7 | oz/y² | DIN 53352 |
5 | Construction | 9X9 | Yarns/sq.inch | DIN 60001 |
3.5X3.5 | Yarns/cm | DIN 53830 |
6 | Yarn | 1300DX1300D | Denier | DIN 60001 |
1430X1430 Dtex | Decitex | DIN 53830 |
7 | Tensile Strength ( warp) | 1800 | N/5cm | DIN 53354 |
8 | Tensile Strength ( weft) | 1700 | N/5cm | DIN 53354 |
9 | Tear Strength ( warp) | 350 | N | DIN 53363 |
10 | Tear Strength ( weft) | 350 | N | DIN 53363 |
11 | Adhesion strength | 120 | N/5cm | DIN 53357 |
12 | Temperature Resistance | -40 to +100 | ℃ | MIL-C-20696 |
13 | Flame Retardant-FR treatment | Passed |
| M2, NFPA 701, DIN 4102-B1 OR B2 level |
14 | Surface Resistivity-Anti-static ( optional ) | <300 mega | ohm | DIN 54345 PART 1 |
Note: The above data is for reference, for different batch of production, the test value may have 10% tolerance.
Technical Characteristics for 550GSM Ducting Material |
NO | Item | Value | Unit | Test Method |
1 | Coating | PVC |
|
|
2 | Base Fabric | Polyester |
|
|
3 | Color | Yellow or Black |
|
|
4 | Finished Weight | 550 +/-20 | gr/sqm | DIN 53352 |
16.2 | oz/y² | DIN 53352 |
5 | Construction | 9X9 | Yarns/sq.inch | DIN 60001 |
3.5X3.5 | Yarns/cm | DIN 53830 |
6 | Yarn | 1300DX2000D | Denier | DIN 60001 |
1430X2200 Dtex | Decitex | DIN 53830 |
7 | Tensile Strength ( warp) | 1800 | N/5cm | DIN 53354 |
8 | Tensile Strength ( weft) | 2500 | N/5cm | DIN 53354 |
9 | Tear Strength ( warp) | 400 | N | DIN 53363 |
10 | Tear Strength ( weft) | 600 | N | DIN 53363 |
11 | Adhesion strength | 120 | N/5cm | DIN 53357 |
12 | Temperature Resistance | -40 to +100 | ℃ | MIL-C-20696 |
13 | Flame Retardant-FR treatment | Passed |
| M2, NFPA 701, DIN 4102-B1 OR B2 level |
14 | Surface Resistivity-Anti-static ( optional ) | <300 mega | ohm | DIN 54345 PART 1 |
Note: The above data is for reference, for different batch of production, the test value may have 10% tolerance.
