Edge Welded Metal Bellows
Edge Welded Metal Bellows
Edge welded metal bellows is a bellows formed by assembling several corrugated circular diaphragms by edge welding. Firstly, two diaphragms stamped from sheet metal are welded on the inner edges in concentric circles to form a diaphragm pair. Then several diaphragm pairs are stacked together for outer edge welding to form a corrugated section. Finally, connecting fittings are welded on both ends of the bellows to create an edge welded metal bellows assembly. Edge welded metal bellows are the same elastic sealing elements as flex bellows but are formed differently.
Types
- KF Bellows
- ISO Bellows
- CF Bellows
- Custom Bellows
size range
From DN7 to DN700.
The ratio of the inner and outer diameters of the edge welded bellows is about 1.2~3. For the formed bellows, the ratio of inner and outer diameters needs to be limited by the plasticity of the material so that it can be manageable, generally about 1.2~1.8. Compared with formed bellows, the axial stroke of edge welded bellows can reach up to 90% of the effective length.
Product features
Simple moulding
Compact length
Wide selection of materials
Good linearity
Longer stroke
- Stroke up to 90% in compression
- Stroke up to 30% in extension
Longer service life
High-temperature resistance
Strong corrosion resistance
Medium pressure capacity
High manufacturing cost
common materials
- Stainless Steel
- AM-350, 304, 304L, 316, 316L, 310, 316Ti
- Nickel Alloy
- Monel, Inconel 600, Inconel 625, Inconel 718, Hastelloy C-276
- Carbon Steel
- SA-387, A606, A588, SA516, SS400
- Nonferrous
- WC, Copper, Aluminum, Titanium etc.
Processing procedures
- Mould design
- Diaphragm pressing
- Cleaning
- Inner Edge Welding
- Outer edge welding
- Welding inspection
- Assembling
- Product inspection
- Cleaning
- Packaging
typical applications
- Aerospace
- Chemical processing facilities
- Oil and gas
- Semiconductors
- Medical
- Food and Beverage
- Pharmaceutical production
- Pulp and paper equipment
- Semiconductor and UHV
- Cryogenic
About Kipflex
Kipflex has an experienced production technical team. In the past ten years, it has been conducting continuous research on corrugated pipes and has formed a complete scientific management system.
Kipflex strictly implements the national standards of the People’s Republic of China “GB/T14525-2010” and “JB/T6169-2006”, and refers to the “EJMA” standard of the American Expansion Joint Manufacturers Association and the technical parameters of Japan, Germany, and other countries.
Frequently Asked Questions
Yes, we can make them to your exact needs.
Edge Welded bellows generally have a relatively large number of convolutions. The welding of the diaphragms is a big project. The typical lead time is about 30 days.
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