Welded bellows is a kind of highly flexible and expandable metal bellows made by numerous pressing hollow thin film through high precision welding.
It consists of two formed hollow membranes welded to be a pair of membranes according to inscribed circle mode to make the inner edge welding then weld outer edge of each pair of membrane to be ripple section, then weld the ripple section with two side ends and end plates, so called welded bellows group which could be reciprocated with other moving parts if needed.
In general, It could be used for sensitive elements, sealing elements, isolating medium, pipe connection and temperature compensation and so on. In addition to its compression, temperature, corrosion resistance, good sealing, etc. There are two distinct advantages compared to conventional forming bellows: great deformation, long life and great linear mechanics.