... ,scuff resistant, 2:corrosive resistant,fire resistant. Material: A high quality very flexible Flame Retardent ducting made from PVC coated Nylon ... ; Tunnel, Basement, Municipal pipeline engineering; marine engineeringCharacteristic: It is high strength,durable,scuff resistant,corrosive resistant,fire resistant. It is ... , no peculiar smell. Without Dust, No fiber pulverized. Exhaust ventilation duct