Formed Bellows

Formed bellows are a type of metal bellows that is distinct from edge welded bellows. The key point is the forming method of metal bellows and their unique advantages. Common forming methods include Hydroforming, Punch Forming, Roll Forming, and Electrodeposition Forming, among which Hydroforming is the most widely used. The metal bellows produced by these four forming methods are collectively called formed bellows. The engineering and manufacturing of formed bellows has a long history. Compared with welded bellows, it has the characteristics of high pressure resistance, light weight, widely used, more economic and so on. From aerospace to the automotive industry, from petrochemical pipelines to kitchen appliances, from national defense to laboratories, they can always be found. The formed bellows is a cylindrical flexible element made of a seamed or seamless tubing. It is used both to deform under pressure and to provide a flexible seal that allows movement.