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Duct work sound attenuators air flow Acoustic Flexible duct for HVAC systems


City: beijing



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Duct work sound attenuators air flow Acoustic Flexible duct for HVAC systems

Brand Name : DEC

Model Number : DEC-CXIA

Certification : ISO9001:2015

Place of Origin : China

MOQ : 1000 meter

Price : USD1.5~5/meter

Payment Terms : Western Union, T/T, L/C, D/A

Supply Ability : 5000 meter/day

Delivery Time : 5 to 13 days after receiving your payments

Packaging Details : plastic bags/can compress save space

Product : Acoustic flexible duct

Inner duct : Perforated duct

Diameter Range : 52mm-610mm

Temperature : -30~+140℃

Operation Pressure : Max.3000Pa

Insulation : Fibreglass wool or polyester

Air Velocity : Max.30m/s

Bending radius : 0.54xD+25mm

Insertion Loss : ≥10db

Length : 10m

Packing : Compressed into a cartonbox

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Duct work sound attenuators air flow Acoustic Flexible duct for HVAC systems

Features & Benefits:
- Superior Insertion Loss
- 10 Year Limited Warranty
- Unique Reinforced, Metalized Jacket
- Certified R-Values
- Airport Noise Reduction Solution


DEC-CXIA is an insulated acoustic air duct, manufactured by using a dead soft aluminum strip which is perforated, spirally wound and mechanically joined together.

The inner duct is draped with a thick fiberglass insulation and covered by a flame retardant, non-toxic polyethylene vapour barrier.

This top-rated product uses a perforated core with an open area of 20% to 25% to completely cushion sounds such as air movement and duct vibrations.

Full range of flexible acoustic thermal insulated ducting for preventing condensation and reducing noise when there’s temperature difference in airflow of ventilation system.

Product Name Noiseproof 8 inch 25ft Acoustic Flexible duct for HVAC systems
Color White/Silver/Black
Length 3m 6m 10m
Thickness 0.06mm-0.20mm
Fire Resistance Class A2 (Max) non-flammable
Temperature Range -30℃/+150℃
Operating Pressure 3000Pa
Inner Diameter 45mm-400mm(1.8"-16")
Length 10m(Max)
Packing Compressed into a cartonbox
Maximum Air Velocity 30m/s
Application HVAC system/Industrial Ventilation/Residential Ventilation/Kitchen/Dryer


1.Temperature range: -30℃ to +150℃
2.Operating pressure: Max.3000 Pa
3.Opearting air velocity: Max 30m/s
4.Bending radius: Min 0.54*D+25mm
5.Diameter range: 52mm-508mm
6.Standard length: 10m

7.Reaction to fire: Difficult to ignite

8.Packing: Single cardboard box

9.Sound Eliminating Performance: Grade A Insertion Loss 10dB

Polyester insulation acoustic flexible duct

Sound attenuators equip with machines


1.Inner duct: perforated AL foil
2.Glass wool blanket: 25mm,16kg/m³
3.Barrier:non woven fabric/PT film
4.R-value: 0.65㎡k/w
5.Outer jacket: steel spiral helix between the lays


1.Are you manufacturer or trade company?

we are flexible duct professional manufacturer.specilized in this field more than 20 years.

2.How could i trust you?

If have time come Guangzhou or Beijing,i am glad to receive you.

3.What product can you provide?

Any flexible air duct.

4.Have you attended exhibition before?

Yes,many,but almost china exhibition.


We, DEC Mach Elec&Equip (Beijing) Co.,Ltd.(“Dec Beijing”) is an exclusively foreign-owned enterprise formed by Holland Environment Group Company (“DEC Group”) in 1996 and with an amount of RMB ten million and five hundred thousand of registered capital.

DEC Group, one of the largest manufacturers of flexible duct in the world, is a transnational corporation specializing in manufacture of various kinds of ventilation ducts. Its products of flexible ventilation duct have passed quality certification tests in more than 20 countries such as American UL181 and British BS476.

By using a full set of automated production line of DEC Group and its product specifications and manufacturing techniques, DEC Beijing, manufacture nine major species ventilation flexible ducts, such as Aluminum foil duct,Combined PVC and AL foil duct,Insulated duct and acoustical and thermal ducts applying for ventilating and exhausting systems in high, medium or low pressures, or erosive, high-temperature, heat-insulation environments.

Annual output of flexible ducts of DEC Beijing is five hundred thousand (500,000)ms, amounting to circle more than ten times of the circumference of the earth. For more than ten years of development in Asia, now Dec Beijing focus on supplying high quality flexible ducts to a variety of industries such as building, nuclear energy, military, electron, space transportation, machinery, agriculture, steel refinery in China or overseas market.

Where there is gas ventilation, there will be our products. Dec Beijing have already become one of the leaders in domestic construction ventilating and industrial flexible ducts.

China Duct work sound attenuators air flow Acoustic Flexible duct for HVAC systems wholesale

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