Description

Donghao braided corrugated hose is a high quality general purpose industrial hose. It is produced in carbon steel, stainless steel (types **4, **6 and **6L) and many others. The corrugated hose is manufactured from a cylindrical, thin walled tube formed from rolled strip and joined at the seam by butt welding. Impressed into this tube is a corrugated annular or helical profile. The thickness of the metal strip, the height of the corrugations and the number of corrugations per foot all affect the performance characteristics of metal hose. Flexibility in corrugated hose is the result of the bending of the metal corrugations. Service life varies depending upon the severity of the flexing, the temperature, corrosive conditions, pressure and vibration to which the hose is subjected. Unless restrained, corrugated hose will elongate when subjected to increasing internal pressure. This restraint is provided by a braided covering, consisting of a tubular sheath of woven metal wires fitted tightly over the corrugated hose and secured at each end. Flexibility of the corrugated hose is not appreciably affected by this wire braid covering. In addition, the braid provides squirm support and dampens vibration. In higher pressure applications, the use of additional braid covers will provide additional working pressure. Unbraided hose is satisfactory for vacuum and low pressure applications.