Initially, skin was stitched into a tubular structure to suit the demands of production struggle. For a long time, by the end of the 17th century, the wandelgaingen brothers of the Netherlands had made canvas hoses with longitudinal stitching, which was widely used in the fire service. Later, with the appearance of rubber in the international market and the development of vulcanization process, the rubber tube and the rubber tube with metal wire or hemp rope and other fabric armored came out. However, some high temperature media like steam and hot wind, such as liquid hydrogen, liquid oxygen, liquid helium, gasoline, kerosene, acid, alkali, etc If you use hose to deliver, of course not. Especially under the high temperature condition, its security reliability is more difficult to guarantee.
As a result, attention has gradually been focused on the metal tube, changing the geometry of the tube to produce corresponding ripples on its inner and outer surfaces. In this way, it not only has the same flexibility as the rubber tube, but also has high temperature resistance, low temperature resistance, aging resistance and corrosion resistance. Thus, the metal bellows as the body of the metal hose are produced.