1.ventilation duct with pvc bag 2.fire-retardant and light-weight 3.the bag protect the duct not be made duirty,damaged ect

ventilation duct with pvc bag

Made of fire-retardant PVC material and helix steel wireEasily to connect due to flexibleEnduring the high temperature Schlep easily wherever exhaust and inhalation the air in the field condition due to light-weightPrevent the workers from the suffocating by improving dust air into fresh air . due to the  bag  ,the flexible duct can be conviently schleped to anywhere during the outdoor 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

pvc flexible ventilation duct with pvc bag