EJMA Expansion Joint Manufacturers Associaton Member. Engineering and design at U. S. Bellows, Inc. is done per EJMA Expansion Joint Manufacturers Association standards. U. S. Bellows has been a EJMA member since 2. Currently, our pipe expansion joints are being designed and manufactured per the 9th edition of the EJMA Standards. The photo belows includes U. S. Bellows employees that are currently active members of the EJMA technical committee. EJMA Technical Committee Barcelona 2. U. S. Bellows Certification of Membership to EJMA. EJMA Certified Since 2002. Engineering and design at U. S. Bellows, Inc. is done per EJMA Expansion Joint Manufacturers Association standards. U. S. Bellows has been. Ejma Bellows Software Store' title='Ejma Bellows Software Store' />Own development bellows calculation software based on EJMA and EN 149172 fully integrated CRM software. Many design formulae of bellows can be found in. Belman is a globally recognised supplier of Engieered Expansion joints and metallic expansion bellows sized. EN 14917, EJMA, ASME, AD 2000. 40 Hadith For Islamic Schools Pdf To Jpg. Software. Manufacturers expansion joints in accordance with the latest EJMA Addendum. Bellows design. American BOAs engineering staff utilizes additional software.