Spiral Ventilation Duct

FEATURES

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    Designed for both high negative and positive pressure and as elbow use
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    Spiral reinforced by spring steel wire/individual steel ring(end ring), spring spiral duct is used for blowing in with lower pressure, or as elbow used in the tunnel or underground which need to make a turn; the end ring spiral duct is mainly used for exhaust air with higher pressure. Seams and profile welded airtight, smooth inner surface, low friction loss.
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    Diameter range 400mm to 1500mm. Customization is available
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    Flame resistence conforms to DIN4102 B1/EN13501/NFPA701/DIN75200
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    Standard length 5m,10m.
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    Antistatic feature(<3x10 ) is optional. Newly developed water-based material which use for antistatic surface treatment is environmental protective material without VOC emission in processing and using, also is healthy for workers, it makes the antistatic value stabilize at 3x10  .  

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PRODUCT TECHNICAL SPECIFICATION

SUSPENSION SYSTEMS

Single suspension ring

Dual suspesion ring