The Expansion Joint Manufacturers Association, Inc. is an organization of established manufacturers of metal bellows type expansion joints.  EJMA was founded in 1955 to establish and maintain quality design and manufacturing standards.  These Standards combine the knowledge and experience of the association's Technical Committee and are available to assist users, designers, and others in the selection and application of expansion joints for safe and reliable piping and vessel installation.

EJMA members are experienced and knowledgeable manufacturers that have demonstrated many years of reliable service to industry. As reputable manufacturers, EJMA members are the best source for product value, design, and service.   For a further explanation of ways EJMA members give you the edge on quality, click here.

EJMA also functions as a forum for discussion and correlation of technical information from members and outside sources including engineering societies, universities, industry, and government.  EJMA carries out extensive technical research and testing on many important aspects of expansion joint design and manufacturing.

The new 10th Edition EJMA Standard is now available both in printed version and e-reader format.
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