Antistatic Ventilation Duct

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  Layflat ventilation duct are ideal for positive pressure application
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  Seams and grommets are welded to be airtight, providing low friction loss
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  Woven/knitted polyster fabric with both sides PCV coated
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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 3 x10  . 
  

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  Flame resistence conforms to to DIN4102 B1/EN13501/NFPA701/DIN75200
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  Diameter range 200-3000mm, customization is available.
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  Standard lenght 10m, 20m, 50m, 100m...develop specifically for TBM, the section length can reach 200m, 300m or even longer, and the lifetime can be up to 5-10 years