Spiral ducting ( semirigid ducting / concertina / negative pressure ventilation ducting )
The spiral ducting can be used as elbows in positive pressure application and in negative pressure application , where it is necessary to exhaust air, toxic gases, dusts and other industrial pollutants out.
Our spiral ducting are made of the PVC-coated fabric with spring steel wire helix reinforced. They are extremely flexible (can be compressed) and have good suction effect.
The pitch can be 150mm, 200mm, 300mm and the diameter of wire can be from 5mm to 10mm. The diameter of our spiral ducting can be from 10 inches to 70 inches. Our standard section length is 5m. The coupling type can be steel ring, zipper or Velcro. We can also customize to make special specifications as our customers request.
Technical Characteristics for 600GSM Ducting Material |
NO | Item | Value | Unit | Test Method |
1 | Coating | PVC |
|
|
2 | Base Fabric | Polyester |
|
|
3 | Color | Yellow or Black |
|
|
4 | Finished Weight | 600 +/-20 | gr/sqm | DIN 53352 |
17.7 | 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.
Technical Characteristics for 650GSM Ducting Material |
NO | Item | Value | Unit | Test Method |
1 | Coating | PVC |
|
|
2 | Base Fabric | Polyester |
|
|
3 | Color | Yellow or Black |
|
|
4 | Finished Weight | 650 +/-20 | gr/sqm | DIN 53352 |
19.2 | oz/y² | DIN 53352 |
5 | Construction | 9X9 | Yarns/sq.inch | DIN 60001 |
3.5X3.5 | Yarns/cm | DIN 53830 |
6 | Yarn | 2000DX2000D | Denier | DIN 60001 |
2200X2200 Dtex | Decitex | DIN 53830 |
7 | Tensile Strength ( warp) | 2600 | N/5cm | DIN 53354 |
8 | Tensile Strength ( weft) | 2500 | N/5cm | DIN 53354 |
9 | Tear Strength ( warp) | 600 | N | DIN 53363 |
10 | Tear Strength ( weft) | 500 | 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.
