Manufacturer direct sales of **PU transparent steel wire spiral air duct, wear-resistant and high-temperature polyurethane air duct, PU steel wire retractable vacuum hose**. Attributes: The PU steel wire hose has excellent wear-resistant protection, reinforced with lower metal wire (wear resistance is 6 times higher than most rubber materials and 5 times higher than soft PU); the interior is smooth, optimizing flow characteristics, lightweight and flexible, enhancing pressure and vacuum resistance, high tensile strength, and tear resistance; good resistance to mineral oils, good chemical resistance, good UV and ozone resistance, small bending radius, not easy to knot, free of softeners and halogens, gas and liquid leakage-proof, and can discharge static electricity through spiral wire grounding. **PU transparent steel wire spiral air duct, wear-resistant and high-temperature polyurethane air duct, PU steel wire retractable vacuum hose**. Structure: Spiral elastic steel wire is firmly embedded in the pipe wall, optimizing external flow, with a wall thickness of about 2.5 mm; Material: Pipe wall: special polyether-polyurethane material, spiral wire: elastic steel wire; Temperature range: approximately -40°C to +125°C, can reach +150°C for a short time. Application: The PU steel wire hose is used for suction and conveying wear protection, especially suitable for rooftop gravel delivery, underground filling, and for vehicle suction and transportation. Product specifications: inner diameter 25mm-500mm                    wall thickness 0.6mm-2.0mm                    Complete specifications available, special specifications can be customized.