Description

- Made of fire-retardant PVC material and helix steel wire - Easily to connect due to flexible - Enduring the high temperature and oleic acid - Acid & alkali resistant and corrosion resistant and fire resistant - Schlep easily wherever exhaust and inhalation the air in the field condition due to light-weight - Prevent the workers from the suffocating by improving dust air into fresh air. - due to the bag , the vent duct can be conviently schlepped to anywhere during out of door working, in order to protect the duct not be made duirty, damaged ect. Application of the flexible duct connected with portable ventilator - Manhole , tunnel and tank - Ship building , under-ground project - Welding and chemical lab or spot