Using a Metal Bellows For Industrial Work

The word “bellows” often invokes images of furnace bellows, or pumps that blast air into a flame to keep it bed, but this only one form of bellows. Today, for many different industries and machines such as cars or trucks, metal bellows are in fact flexible metal tubes that can carry hot, cold, or pressurized gases or liquids without tearing or melting during work. They are effectively short tubes that contain materials too hot, cold, or pressurized for other types of tubes or vessels to contain, and different models of various sizes and materials are out there for various uses, like in a car or a factory. A customer will have to know the type of bellows that a machine or vehicle needs, and find the right model from manufacturers and have skilled workers install it without any risks of leaks or ruptures. For example, exhaust bellows for engine exhaust industry work can be useful for transporting hot gases safely, and besides exhaust bellows for engine exhaust industry work, other bellows may contain hot liquids or very cold materials like chilled air or more. If a factory or manufacturer needs exhaust bellows for engine exhaust industry work or some of other type of bellows, what options can they pursue? Just how resistant are exhaust bellows or standard bellows when doing their work?

Materials and Strength of Bellows

exhaust bellows for engine exhaust industry work and other types will be made out of the correct metal alloys and construction method so that they can safely transport whatever is inside them without melting, warping, or rupturing, and bellows are also typically flexible, and they should bend during their work without breaking or leaking. What can someone expect for heat resistance or corrosion resistance in these devices? A bellows that works in a marine environment, for example, must be able to resist the corrosion effects of saltwater and other impurities in the water. Marine Grade Stainless Steel alloys can handle this. They will contain an element called molybdenum, which has a melting point of 4,748 degrees Fahrenheit, and a bellows made from this alloy will stand up to corrosive marine water for a long time. Bellows used for transporting strong chemicals in a chemical plant, similarly, will also have to endure the composition of whatever they are carrying, and will be made out of a specialized alloy designed to endure it. The wrong bellows model may quickly dissolve and rupture when exposed to these environments.

Bellows can often endure extreme heat or cold based on the materials that they carry or their surroundings, such as a truck’s or airplane’s hot engine during work. For example, an alloy called Hastelloy X can be used well for high-heat jobs. This particular alloy is able to resist temperatures up to 1,600 degrees Fahrenheit, and it is often used in aerospace jobs but it also can be used for commercial metal bellows jobs. Some environments such as vehicle engines, ore smelting facilities, or more will deal with extremes of temperature and the bellows must be able to keep up.


Getting the right model of bellows made from the right alloys is just the first step. An exhaust bellows for engine exhaust industry work or other bellows will need maintenance and inspection every so often, or else a ruptured or leaking bellows can quickly cause a disaster. How can this be prevented? Any workplace manager or vehicle owner can have inspection crews visit regularly to look over metal bellows and check for imminent leaks, ruptures, melting, or any other issue, such as the bellows coming loose from where it is fastened. Damaged, old, or worn-out bellows can be replaced with newer ones to make sure that the job is being done right and no leaks occur.