Steel wire helix hose Application: Especally ideal for ventilation and air conditioning system, industrial vacuum cleaner, and granulate conveying systems. As suction and transport hose suitable for below substance. Gaseous medias such as vapors and smoke. Liquid medias. Small granultes such as dusts,powders and ect. Features: Highly flexible with low weigh Extremely compressible Smooth interior Highly transparent wall Small bending radius Working temperature range -20 degree to +70 degree. Material: Wall:Soft PVC Spiral:Pvc coated steel wire.