Expansion Joint Manufacturers Association Explained

The Expansion Joint Manufacturers Association is an organization of 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.^[1] 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.^{[2] [3]}

The EJMA organization performs extensive technical research on a variety of topics concerning the design and manufacturing of expansion joints.^[4] 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.
• Belman A/S
• EagleBurgmann EJS
• Flexider
• Hyspan Precision Products, Inc.
• Idrosapiens S.r.l.
• KE-Burgmann EJS
• MACOGA, S.A ^[5]
• Microflex, Inc.
• Senior Flexonics Pathway
• SFZ, S.A.
• Teddington Engineered Solutions Ltd.
• US Bellows, Inc.^[6]
• WahlcoMetroflex, Inc.
• Witzenmann GmbH, Inc.^[7]
• UnisonHKR Co., Ltd. (South Korea) ^[8]
• Teadit Juntas Ltda.

External links

• Official EJMA Site
• Metal Expansion Joint Pressure Thrust – Web site: Part 2 – Pressure Thrust – Oakridge Bellows . 2023-08-19 . Oakridge Bellows. en-US. (1 minute)
• Metal Expansion Joint Anchors and Guides - Web site: Part 3 – Anchors & Guides – Oakridge Bellows . 2023-08-19 . Oakridge Bellows. en-US. (1 minute)

See also

• Expansion joint

Notes and References

1. http://www.ejma.org/= EJMA Website
2. Rubber bellows life cycle & specification - Modern Building Services . 2023-08-19 . Modern Building Services k . en.
3. Web site: 2017-04-03 . EJMA 10th Edition . Triad Bellows . 2023-08-19 . en-US.
4. Web site: Expansion Joints & Piping Equipment. World of Piping. 31 August 2010.
5. Web site: MACOGA: MACOGA is an official member of EJMA . MACOGA, S.A. . 2 February 2021.
6. Web site: U.S. Bellows: About Us. U.S. Bellows, Inc.. 31 August 2010. 4 June 2010. https://web.archive.org/web/20100604062032/http://www.usbellows.com/aboutus.html. dead.
7. Web site: Witzenmann GmbH . Witzenmann GmbH. 7 February 2024.
8. https://www.unisonhkr.co.kr:40012/