Corrugated Hose in metal hoses

The manufacture of corrugated metal hoses starts from the selection of raw materials, through the main process links such as billet manufacture, bellows molding, shaping, heat treatment, surface treatment, quality inspection, etc., to manufacture the bellows that meets the design requirements.

Corrugated metal hose from the structural point of view, metal bellows material has two bells of strip and pipe, they can be molded out of annular bellows and spiral bellows.

Strip molding of the bellows always have a certain length of brazing or fusion welding of the buckle and joints, these places are often accumulated with the residue of the working medium, and precipitation of cleaning tests and mechanical impurities in the working medium contamination of the inner lumen. Therefore its use of trustworthiness to be relatively poor.

Annular bellows is a number of circular diaphragm outer edge and a number of concave surface to the center of the semicircular ring tangent connection, the inner edge of the concave surface with a number of concave undershirt semicircular ring tangent connection of the special geometry of the pipe. Its billet to pipe-based, this type of bellows has a flexible, elastic, simple to manufacture, rigidity and other characteristics. Suitable for the production of general working pressure, high requirements for flexibility of large and medium diameter metal hose. Spiral bellows is a certain length of spring-wound diaphragm outer edge and spring-wound concave centripetal semicircular ring tangent, the inner edge and spring-wound concave undershirt semicircular ring tangent with a special geometric shape of the pipe. This type of bellows has high strength, rigidity, manufacturing simple features, suitable for the production of general requirements for flexibility, high strength requirements of high and medium pressure, medium and small diameter metal hose.