Welded bellows (also called edge-welded, or diaphragm bellows) are manufactured by welding a number of individually formed diaphragms to each other.

Advantages of welded metal bellows 

• It can be made of any material that can be welded. 

• Production is possible without limitation in size and shape. 

• Excellent straightness and flexibility, and excellent airtightness, suitable for ultra-high vacuum. 

• Excellent durability, long service life and strong against high temperatures. Use of welded metal bellows 

• Measurement and sensor [speed, displacement, pressure and temperature measurement] 

• Valve stem sealing 

• Use in Mechanical Seal 

• Used for actuators, accumulators, and equalizers 

• Used for bellows coupling (backlash is 0, compensation for misalignment and high RPM) • Used for ultra-high vacuum

Formed metal bellows are manufactured by that the Hydraulic pressure a metal sheet on the formed mould or using the molded roller form its.

* Precision molded bellows are used for pressure switches, pressure gauges, pressure electric converters, actuators, hydraulic absorbers, electric control devices, vacuum systems, and valves. Also general molded bellows are used for expansion pipes and expansion joints.

* Hydraulic bellows have trait of flexible free expansion and contraction, bending and sealing functions, so they are used in various applications such as controlling various fluids from vacuum to high pressure, low to high temperature, and moving parts. Rollformed bellows are suitable for high pressure applications because they are easy to form even if it is a thick plate