Use of hose

At first, people used animal skins to sew into tubular structures to meet the needs of production struggles. After a long period of time, by the end of the 17th century, the Dutch Van Delgegin brothers made longitudinally stitched canvas hose, which was widely adopted in the fire service at that time. Later, with the emergence of rubber in the international market and the development of its vulcanization process, rubber hoses and fabric armored hoses such as metal wire or twine came out. However, some steam, hot air type of high temperature medium 'liquid hydrogen, liquid oxygen, liquid helium type of low temperature medium; Gasoline, kerosene, acid, alkali and other corrosive media, if the hose to transport, of course, not. Especially under high temperature conditions, its safety and reliability is more difficult to ensure. 

Therefore, people gradually focus on the metal pipe, change the geometry of the metal pipe, so that its internal and external surfaces produce corresponding ripples. In this way, it has the same flexibility as the rubber hose, and at the same time, it has high temperature resistance, low temperature resistance, aging resistance and corrosion resistance. As a result, the metal bellows used as the body of the metal hose are thus produced.