1.Orange pvc duct 2. Negative pressure, pitch 5 cm 3. Water and fire proof 4. Custom sizes are available Negative pressure ship buliding exhaust flexible air duct Product description 1. Material: orange pvc, specially made for negative pressure ducts. 2. Structure:supported by helix steel wire The steel wire is wrapped by black rubber strip, which is wear-and-tear proof. 3. Both ends with metal rings. Each single ducts can be connected together very easily. 4. Wire pitch: 5cm. Can endure at least 8000 pa. 5. Size: 130mm x 5m Standard diameter:100mm-1500mm, Standard length: 5m, 10m. Custom size are available upon request. Packaging & shipping Packing: 1pc/ctn, netural carton packing. Inside will have a plastic bag for protection Shipping ways: by sea, by air, by express Shipping terms: ex-work, fob, c&f, cif, ddu, ddp... Application Negative pressure is mainly used of air exhaust and air suction. With 6cm pitch, the duct can stay on its own and will not collapse. When connecting with the ventilation equipment, it will not draw back. 1. Air exhaust, air suction 2. Mainly connecting with the ventilation fans, used to exhaust the poisonous gas, flammable and explosive gas, welding gas, fume, heat air, dust... 3. To creat a better environment for the workers. 4. Maindly used in shipping building, warehouse, underground, coal mine, fire fighting... Our services 1. We can offer small testing samples 2. Oem serivice is available 3. Product warranty is 1 year
