Expansion Joint Manufacturers Association
Encyclopedia
The Expansion Joint Manufacturers Association is an organization of a metal bellows
expansion joint manufacturers. It was founded in 1955 to create and maintain a set of standards for quality expansion joint
design and manufacturing
. The EJMA standards are used worldwide as a reference for the proper selection and application of metallic bellows expansion joints. The standards are a combination of a variety of expansion joint manufacturers' knowledge and experience.
The EJMA organization performs extensive technical research on a variety of topics concerning the design and manufacturing of expansion joints. This knowledge contributes to providing new versions of the EJMA book of standards.
Metal bellows
Metal bellows are elastic vessels that can be compressed when pressure is applied to the outside of the vessel, or extended under vacuum. When the pressure or vacuum is released, the bellows will return to its original shape .Bellows technology of the 20th and 21st century is centered on metal...
expansion joint manufacturers. It was founded in 1955 to create and maintain a set of standards for quality expansion joint
Expansion joint
An expansion joint or movement joint is an assembly designed to safely absorb the heat-induced expansion and contraction of various construction materials, to absorb vibration, to hold certain parts together, or to allow movement due to ground settlement or earthquakes...
design and manufacturing
Manufacturing
Manufacturing is the use of machines, tools and labor to produce goods for use or sale. The term may refer to a range of human activity, from handicraft to high tech, but is most commonly applied to industrial production, in which raw materials are transformed into finished goods on a large scale...
. The EJMA standards are used worldwide as a reference for the proper selection and application of metallic bellows expansion joints. The standards are a combination of a variety of expansion joint manufacturers' knowledge and experience.
The EJMA organization performs extensive technical research on a variety of topics concerning the design and manufacturing of expansion joints. This knowledge contributes to providing new versions of the EJMA book of standards.
Members
The current members that are a part of the Expansion Joint Manufacturers Association include:- AEROSUN-TOLA Expansion Joint Co. Ltd.
- American BOA, Inc.
- Badger Industries, Inc.
- Flexider
- Hyspan Precision Products, Inc.
- Idrosapiens S.r.l.
- KE-Burgmann EJS
- Microflex, Inc.
- Senior Flexonics Pathway
- SFZ, S.A.
- US BellowsUS BellowsUS Bellows is a manufacturer of metal bellows, fabric expansion joints, and metallic expansion joints including refractory lined, hinged, gimbal, slip-type, in-line pressure balanced, and elbow pressure balanced expansion joints. It was acquired by Piping Technology and Products in 1997 from...
, Inc. - WahlcoMetroflex, Inc.
- Witzenmann GmbH