Supply PU PU steel telescopic tube factory direct vent pipe Keywords: PU steel telescopic tube, PU steel pipe, PU telescopic tube, PU retractable hose, PU air hose, PU ventilation pipe, PU exhaust pipe, PU vacuum tube, PU vacuum tube ventilation purposes: PU mainly for ventilation duct cleaning. High rate of flow force strong wear particles, sand, gravel, fine, useless glass, dust and chips, gas and liquid environments, silo conveyor, glass, wood industry, steel industry, plastics industry, pits, shipbuilding industry, the cement industry and other mechanical conveying pipe, machinery and equipment, especially for dynamic position when tough protective tube. Can also be used in the food industry, the pharmaceutical industry. PU duct can better meet the requirements of all walks of ventilation vacuuming. Nature: Extreme abrasion resistance, strength copper wire reinforced hose, high pressure, vacuum and compression resistance, high axial strength is superior, so that transport materials and smooth, good chemical resistance; bending radius is approximately equal to three times the diameter, electro-static discharge . Construction: Flexible copper wire coated with sturdy on the wall; wall: Special Top polyether - polyurethane, about 0.4-0.9MM thickness, smooth wall; than ordinary PVC hose, rubber hose wear 10 times higher. Specification Diameter :25-400mm Temperature range: about -30 ℃ to +90 ℃, short time up to +120 ℃. Packaging: woven Reel facilitate long-distance transport.