Our airslide hose are usually used for bulk cement trailer discharging. It always woking on the bottom of the trailer. Through inflation by air compressor, it makes the bulk cement discharging from the trailer. Some people called Aeration hose. It is really very similar as Fire hose frame. But it's much more strength and impact toughness than fire hose. One side of our hose is the PU coating. It is for block off the air flow.