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.
The current members that are a part of the Expansion Joint Manufacturers Association include:
Yamaha Corporation is a Japanese musical instrument and audio equipment manufacturer.
Komatsu Ltd. or Komatsu (コマツ) is a Japanese multinational corporation that manufactures construction, mining, forestry and military equipment, as well as diesel engines and industrial equipment like press machines, lasers and thermoelectric generators. Its headquarters are in Minato, Tokyo, Japan. The corporation was named after the city of Komatsu, Ishikawa Prefecture, where the company was founded in 1921. Worldwide, the Komatsu Group consists of Komatsu Ltd. and 258 other companies.
Within industry, piping is a system of pipes used to convey fluids from one location to another. The engineering discipline of piping design studies the efficient transport of fluid.
The SIG Sauer P226 is a full-sized service pistol made by SIG Sauer. This model is available in four chamberings: the 9×19mm Parabellum, .40 S&W, .357 SIG, or .22 Long Rifle. It has the same mechanism of operation as the SIG Sauer P220, but is developed to use higher capacity, double stack magazines in place of the single stack magazines of the P220.
Vossloh AG is a rail technology company based in Werdohl in the state of North Rhine-Westphalia, Germany. The SDAX-listed group has achieved sales of around €930 million in 2016 and, as of 2017, had more than 4,000 employees.
BorgWarner Inc. is an American automotive and e-mobility supplier headquartered in Auburn Hills, Michigan. As of 2023, the company maintains production facilities and sites at 92 locations in 24 countries, and generates revenues of US$14.2 billion, while employing around 39,900 people. The company is one of the 25 largest automotive suppliers in the world.
A pipe is a tubular section or hollow cylinder, usually but not necessarily of circular cross-section, used mainly to convey substances which can flow — liquids and gases (fluids), slurries, powders and masses of small solids. It can also be used for structural applications; a hollow pipe is far stiffer per unit weight than the solid members.
Worthington Enterprises, Inc. is a global diversified metals manufacturing company based in Columbus, Ohio. It is a steel processor and manufacturer of pressure vessels, such as propane, oxygen and helium tanks, hand torches, refrigerant and industrial cylinders, camping cylinders, exploration, recovery and production products for global energy markets; water system tanks for storage, treatment, heating, expansion and flow control, and compressed natural gas storage cylinders. The company also manufactures framing systems for mid-rise buildings and steel pallets and racks for shipping. It is the largest independent processor of flat-rolled steel in the United States. The company takes steel from steel producers and processes it for customers in industries including automotive, lawn and garden, construction, hardware, office furniture, electrical control, leisure and recreation, appliance, agriculture and HVAC.
A expansion joint, or movement joint, is an assembly designed to hold parts together while safely absorbing temperature-induced expansion and contraction of building materials. They are commonly found between sections of buildings, bridges, sidewalks, railway tracks, piping systems, ships, and other structures.
A fitting or adapter is used in pipe systems to connect sections of pipe or tube, adapt to different sizes or shapes, and for other purposes such as regulating fluid flow. These fittings are used in plumbing to manipulate the conveyance of fluids such as water for potatory, irrigational, sanitary, and refrigerative purposes, gas, petroleum, liquid waste, or any other liquid or gaseous substances required in domestic or commercial environments, within a system of pipes or tubes, connected by various methods, as dictated by the material of which these are made, the material being conveyed, and the particular environmental context in which they will be used, such as soldering, mortaring, caulking, plastic welding, welding, friction fittings, threaded fittings, and compression fittings.
Linamar Corporation is a manufacturing company serving the mobility, access, agriculture, and MedTech industries. The company has three operating segments: Industrial, Mobility, and eLIN.
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, provided the material has not been stressed past its yield strength. They are used both for their ability to deform under pressure and to provide a hermetic seal that allows movement.
Voestalpine Nortrak, or VAE Nortrak, is a manufacturer of railroad track components. It started in October 1981 as Nortrak Railway Supply Ltd., an industrial supplier of new and used railroad track components. In November 1983, the company began manufacturing trackwork in Richmond, British Columbia, Canada. In 1990, Voest-Alpine Eisenbahnsysteme of Austria, which had been in the trackwork manufacturing business for over 140 years and became independent of Voest-Alpine AG that same year, formed a joint venture with Nortrak Ltd. and the company became known as VAE Nortrak Ltd. Voest-Alpine Eisenbahnsysteme became known as VAE Group, 90 percent owned by a joint venture between Voest-Alpine and Vossloh AG starting in 1998, and a subsidiary of voestalpine AG since 2003.
Georg Fischer comprises four divisions GF Piping Systems, GF Building Flow Solutions, GF Casting Solutions, and GF Machining Solutions. Founded in 1802, the corporation is headquartered in Switzerland and is present in 45 countries, with 187 companies, 76 of them production facilities. Its over 19 800 employees generated sales of over CHF 4 billion in 2018. GF offers pipes for the safe transport of liquids and gases, lightweight casting components in vehicles, and high-precision manufacturing technologies.
ElringKlinger AG is a German automotive supplier and car spare parts manufacturer headquartered in Dettingen an der Erms, Germany. As a worldwide development partner and original equipment supplier of cylinder-head and specialty gaskets, plastic housing modules, shielding components for engine, transmission, exhaust systems and underbody, exhaust gas purification technology as well as battery and fuel cell components ElringKlinger provides its products to almost all of the world's vehicle and engine manufacturers. As at May 3, 2017, in addition to the parent company, the ElringKlinger Group included 44 fully consolidated subsidiaries.
US 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 Ketema-U.S. Bellows, Inc. and is now located in Houston, Texas. U.S. Bellows, Inc. provides a variety of expansion joints for piping and duct systems and has been a member of the Expansion Joint Manufacturers Association, Inc. since 2002. In December 2011, U.S. Bellows acquired all bellows assets of the former Lortz Manufacturing companies, doubling its manufacturing capabilities. It is a privately held company owned by Durga D. Agrawal. It is a subsidiary of Piping Technology and Products. These companies provide pipe supports and expansion joints to international companies including Dow Chemical Company, Chevron Corporation, ExxonMobil, and Bechtel.
Piping Technology and Products is a privately owned pipe support manufacturing and engineering company headquartered in Houston, Texas, United States. Its wholly owned subsidiaries are US Bellows, Sweco Fab, Fronek Anchor/Darling Enterprise, and Pipe Shields. These companies provide pipe supports, expansion joints, shock and vibration controls, and pre-insulated supports to a variety of industries including LNG, chemical, petrochemical, pulp & paper, and aerospace.
A hinged expansion joint is a metallic assembly, that can rotate in a single plane, used to absorb changes resulting from piping thermal expansion or contraction.
A Toroidal expansion joint is a metallic assembly that consists of a series of toroidal convolutions which are circular tubes wrapped around pipe ends or weld ends and have a gap at the inside diameter to allow for axial stroke while absorbing changes in expansion or contraction of the pipe line. Convolutions are the portion of the bellows that allow it to be flexible. The convolutions are formed around reinforcing bands so that only the concave portion of the torus allows for flexibility. Toroidal expansion joints are typically used in high pressure applications, where little movement is required, and generally used for heat exchangers. Usually, they are hydraulically formed, but others are free formed. These expansion joints are also referred to as "Omega" bellows due to their shape resembling the Greek letter, Omega.
Metal expansion joints are compensating elements for thermal expansion and relative movement in pipelines, containers and machines. They consist of one or more metal bellows, connectors at both ends, and tie rods that depend on the application. They are differentiated according to the three basic types of movement: axial, angular and lateral expansion joints. Expansion joints have usage in various sectors, like energy production, paper industry, chemical industry, water treatment, oil and gas. Expansion joints can be used wherever thermal movements or vibration occurs in pipelines.