Technical assistance standards of the expansion joint manufacturers association, inc. The authority on expansion joints the ejma standards receive a free copy of a practical guide to expansion joints with each printed. Good morning friends, i was looking for ejma 9th edition standard. The ejma standards are used worldwide as a reference for the proper selection and application of metallic bellows expansion joints. Hyspan expansion joints, expansion joint technical. Ejma standard of the expansion joint manufacturers association n o oedition. Ejma hand calculations x caesar ii intergraph cadworx. Inquiries requiring such consideration will be returned. An evaluation of ejma stress calculations for unreinforced. This ebook can only be opened on 1 device and no printing or copying of the content is allowed. The expansion joint manufacturers association ejma, the authority on metal expansion joints, has revised the standards in the latest 10th edition ejma standards are recognized throughout the world as the authority on the proper selection and application of metallic bellows type expansion joints for safe and reliable piping and vessel installation. A bellows expansion joint is an assembly of two or more bellows which.
The latter provides a significantly higher cycle life. The tenth edition standards combine the knowledge and experience of the leading manufacturers of expansion joints into an invaluable. Ejma does not act as a consultant on specific engineering problems or on general application or understanding of the ejma standards. Using a bellows configuration corresponding to standard, e. Guest tom vowell on sunday, 20 october this would be a very good development as it will lead to more uniform design practices and less confusion. This catalog outlines the selection and installation of our metal bellows. Proco style 240242 spherical molded expansion joints are designed for piping systems to absorb pipe movements, relieve stress, reduce system noisevibration, compensate for misalignmentoffset and to protect rotating mechanical equipment against startup surge forces. At triad bellows we believe that design integrity is key to building metal bellows expansion joints that will last. Transverse vibrations of bellows expansion joints macsphere. The ejma standards are recognized throughout the world as the authority on the proper selection and application of metallic bellows type.
The other is in accordance with the standards of the expansion joint manufacturers association. Our expansion joints are present in more than 90 countries across all continents performing demanding tasks and we build this global experience into every expansion joint and support service that bears our name. The expansion joint manufacturers association is an organization of a metal bellows expansion joint manufacturers. The successful installation of expansion joints in a pipe system. It discusses the parameters and conditions specified by the piping system designer and how to design an expansion joint as a. Ihs markit is your source for ejma standards and publications. We listen and learn about the challenges our customers face, and strive to help meet them. Ejma 10th edition is the most current edition and supersedes all previous publications.
Metallic expansion joint project standards and specifications page 3 of 9 rev. The expansion joint shall be able to handle the axial, lateral, angular or rotational movements or a combination of one or more above, at all operating conditions. With each copy of the ninth edition, you will receive ejma s practical guide to expansion joints, a pocket size primer based on ejma standards. Triad bellows design and manufacturing uses bellows design software based on ejma 10th edition guidelines. The guide is intended to provide users with a basic understanding of expansion joints. Ejma carries out extensive technical research and testing on many important aspects of expansion joint design and manufacturing. Bellows vendors will often quote two different cycle lives for their bellows.
Can someone please provide me this standard 9th or 8th edition as well. The ejma bellows fatigue curve is a best fit curve based on data that wa. Stainless steels can only be affect by uniform corrosion. According to the ejma standard, an expansion joint can be installed in proximity. Prior to 1988, coverage of metallic bellows expansion joints in asme b31. Ejma is the expansion joint manufacturers association. In this method, megaflexon can produce up to 1,500 mm in nominal diameter.
Metallic bellows the main element of an expansion joint, which consists of one or more convolution, is called bellow. Asme section viii division 1 appendix 26 june 2004 addenda white paper francis osweiller richard stastny asme swghte asme swghte scope this white paper is intended to provide historical information regarding appendix 26 of asme section viii, division 1 pressure vessel and heat exchanger expansion joints and the basis for the. Macoga expansion joints, metal expansion joints macoga. Receive a free copy of a practical guide to expansion joints with each printed copy of the tenth edition, you will receive ejma s practical guide to expansion joints, a pocket size primer based on ejma standards. Peng criticism is addressed to the fact the anchor is so important in the application of bellow expansion joints that many engineers seem to automatically place an anchor or anchors in an expansion joint installation. Stainless steel expansion joints low pressure and high pressure metal expansion joints are designed and manufactured in strict accordance with the expansion joint manufacturers association ejma latest 10th edition. Welcome to triad bellows stainless steel exhaust bellows data sheets page. Doing business with an ejma member takes the risk out of vendor selection, when you insist on ejma membership, you can be sure that you ore. Triad bellows design and manufacturing uses bellows design software based on ejma. Abstract the flexible element of an expansion joints consisting of one or more convolutions. The ejma standards are recognized throughout the world as the authority on the proper selection and application of metallic bellows type expansion joints for safe and reliable piping and vessel installation. The authority on expansion joints the ejma standards are recognized throughout the world as the authority on the proper selection and application of metallic bellows type expansion joints for safe and reliable piping and vessel installation. Purchase of standards includes a free practical guide with each book. Morishita, ikahata, and kitamura 1989 use the fixedfixed uniform rod.
The information set forth is based upon the substantial experience in research, design and application of rubber expansion joints by engineering personnel associated with the member companies of the nonmetallic expansion joint division of the fluid sealing association. The discussion in pengs book assumes using an ej to solve the equipment load problem due to piping thermal expansion. This guide is not intended as a source for expansion joint design or application details. Prediction of cycle life of flexible pipe bellows science publishing. Standards of the expansion joint manufacturers association, inc. Expansion joint manufacturers association metal expansion. Asme section viii division 1 appendix 26 june 2004 addenda. Expansion joint manufacturers association wikipedia.
Includes one copy of practical guide to expansion joints. Responses to inquiries are normally made at the ejma technical committee meetings which are held in april and october. Typical narrow arch expansion joint movementspring. Ejma was founded in 1955 to establish and maintain quality design and manufacturing standards.
Expansion joint selection expansion joint selection definitions fp fix point on the straight pipe fp fix point placed in the corner lfp light. Design, manufacturing and analysis of metal expansion bellows. Cycle life may be increased, or movement may be increased decreasing the cycle life by utilizing the graph located on this page. Design, analysis and shape optimisation of metallic bellows for. The ej were designed according to the expansion joints manufacturer association code ejma, the diameters range from 0. This ebook can only be opened on 1 device and no printing or copying of the content is. This metal expansion joint design is recognized and recommended by ejma, the expansion joint manufacturers association. It should be noted that the manual generation of the input data file for 30 finite. Ejma standards pdf documents similar to ejma 9th standards of expansion joint manufacturers association 9h. Use our different data sheets as references to see which bellows will meet your needs. Metal expansion joints and connectors, rubber expansion joints, te. Bellows are one of the most efficient energy absorbing elements for engineering system. Expansion joint application and design course covers how to provide flexibility in the piping system by employing expansion joints to accommodate thermal expansion and contraction of sections of pipes or ducts.
Receive a free copy of a practical guide to expansion joints with each printed copy of the tenth edition, midwayusa is a privately held american retailer of. It was founded in 1955 to create and maintain a set of standards for quality expansion joint design and manufacturing. To become a member of ejma, a company must adhere to strict quality standards in all aspects of expansion joint design, fabrication and testing. Bellows were required to be designed in accordance with the rules for pressure design of unlisted components par. Once you have determined the part that best matches your requirements, we will be able to see if a standard or custom design would be the most beneficial for your situation. Ejma is an organization of the leading international manufacturers of metal bellows expansion joints. The expansion joint manufacturers association, inc.
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