声卫士 消音风管
Comparison of Air Ducts
|
Name |
475 centrifugal glass wool directly formed silencing air duct |
Galvanized steel sheet air duct (insulation) |
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|
Engineering cost |
Low |
One time molding, no need for secondary insulation, saving on secondary insulation costs |
Tall |
Need secondary insulation |
|
Production cycle |
Fast |
Plate machine slotting, fast forming of air ducts |
Slow |
The process is complex, and the processing cycle of special pipe fittings is limited |
|
Fire performance |
A-class non combustible |
Rubber insulation B-grade non combustible |
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|
Air leakage rate |
Small |
Unable to connect via plug-in connection, with low air leakage and no occupation of elevation space |
Big |
The gap between the flanges is large, occupying the elevation space |
|
Service life |
Long |
Corrosion resistant, non rusting, non aging, with a lifespan of over 20 years |
Short |
Easy to corrode and puncture, short lifespan, basically 6-10 years |
|
Durability |
Strong |
Unique connection method, saving elevation space |
Weak |
Rubber insulation has the phenomenon of mice gnawing on it, glass wool external insulation has the phenomenon of falling off, insulation nails are prone to weak adhesion, which can easily cause the insulation board to fall off, and the insulation layer sealant is prone to aging |
|
Moisture resistance |
Tall |
Effectively prevent the spread of water vapor |
Low |
Condensation water causes rusting and leakage of condensation water on galvanized sheet metal |
|
Usage effect |
Good |
Good insulation effect, sound absorption and noise reduction of 20-30DB, no odor, energy saving of 20% -30% |
Differ from |
Poor insulation effect, loud noise, high formaldehyde and odor in rubber brush, posing great harm to the body, and high air leakage and energy consumption |
|
Weight |
Light |
Bulk density 80-120kg/m³ |
Weight |
Far heavier than fiberglass ducts |
|
Comparison chart |
Overall beautiful and smooth, with Class A non combustible and long service life
|
Corrosion of galvanized parts, detachment of insulation layer, unsightly appearance, short service life
|
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