{"id":3030,"date":"2025-08-16T13:49:09","date_gmt":"2025-08-16T10:49:09","guid":{"rendered":"https:\/\/www.tektrade.ee\/en\/?post_type=product&#038;p=3030"},"modified":"2025-08-17T00:08:15","modified_gmt":"2025-08-16T21:08:15","slug":"metal-expansion-joints","status":"publish","type":"product","link":"https:\/\/www.tektrade.ee\/en\/our-products\/pipeline-components\/expansion-joints\/metal-expansion-joints\/","title":{"rendered":"Metal Expansion Joints"},"content":{"rendered":"\n<p>Metallkompensaatorid TekTrade Baltic tootevalikus on valmistatud vaid klientide vajaduste p\u00f5hiselt. Nn standardtooteid valikus ei ole.<br>Metal expansion joints are available in different configurations.<\/p>\n\n\n\n<p>The EJMA Standards are used for proper selection and in designing of metallic bellows type expansion joints in order to achieve safe and reliable piping and vessel installation.&nbsp;<\/p>\n\n\n\n<p>Standard materials:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>material of bellows \u2013 AISI 321<\/li>\n\n\n\n<li>welding ends \u2013 carbon steel A106<\/li>\n\n\n\n<li>inner sleeve &#8211;\u00a0 AISI 304<\/li>\n\n\n\n<li>flanges \u2013 ST-37<\/li>\n<\/ul>\n\n\n\n<p>Other materials are available by request.<\/p>\n\n\n\n<p>Sizes &#8211; DN15 &#8211; DN8000 (depending on the type)<\/p>\n\n\n\n<p><br><br><strong>Metal Expansion Joint Types<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Single \u201cunrestrained\u201d expansion joints<\/li>\n<\/ul>\n\n\n\n<p>This type of expansion joint is made up of one single bellows provided with welding ends. Used mainly for compensating axial, but to some extent lateral and angular movement.&nbsp;<\/p>\n\n\n\n<div class=\"wp-block-group is-layout-grid wp-container-core-group-is-layout-baef362d wp-block-group-is-layout-grid\">\n<div class=\"wp-block-group is-content-justification-left is-layout-constrained wp-container-core-group-is-layout-8c890d92 wp-block-group-is-layout-constrained\">\n<figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"250\" height=\"213\" src=\"https:\/\/www.tektrade.ee\/en\/wp-content\/uploads\/sites\/2\/2025\/08\/ResizedImage250213-MWA-axial-unrestrained-welding-ends.jpg\" alt=\"\" class=\"wp-image-3031\"\/><figcaption class=\"wp-element-caption\"><em>Axial Unrestrained Welding Ends<br><\/em><\/figcaption><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-group is-layout-constrained wp-block-group-is-layout-constrained\">\n<figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"250\" height=\"213\" src=\"https:\/\/www.tektrade.ee\/en\/wp-content\/uploads\/sites\/2\/2025\/08\/ResizedImage250213-MFA-axial-unrestrained-flanges.jpg\" alt=\"\" class=\"wp-image-3032\"\/><figcaption class=\"wp-element-caption\"><em>Axial Unrestrained Flanges<br><\/em><\/figcaption><\/figure>\n<\/div>\n<\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Universal \u201cunrestained\u201d expansion joints<\/li>\n<\/ul>\n\n\n\n<p>This type of expansion joint is made up of two bellows joined together by a central pipe provided with flanged ends. Used mainly for compensating axial and lateral movement, but slightly also angular movement.&nbsp;<\/p>\n\n\n\n<div class=\"wp-block-group is-nowrap is-layout-flex wp-container-core-group-is-layout-ad2f72ca wp-block-group-is-layout-flex\">\n<div class=\"wp-block-group is-layout-constrained wp-block-group-is-layout-constrained\">\n<figure class=\"wp-block-image alignleft size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"250\" height=\"213\" src=\"https:\/\/www.tektrade.ee\/en\/wp-content\/uploads\/sites\/2\/2025\/08\/ResizedImage250213-MFD-universal-unrestrained-flanges.jpg\" alt=\"\" class=\"wp-image-3033\"\/><figcaption class=\"wp-element-caption\"><em>Universal Unrestrained Flanges<\/em><\/figcaption><\/figure>\n<\/div>\n<\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Single tied expansion joints<\/li>\n<\/ul>\n\n\n\n<p>This type of expansion joint is made of one single bellows element with end connections plus a tie rod system. Absorbs axial and small amounts of lateral and angular movements if provided with only two tie rods. &nbsp;<\/p>\n\n\n\n<div class=\"wp-block-group is-layout-grid wp-container-core-group-is-layout-baef362d wp-block-group-is-layout-grid\">\n<div class=\"wp-block-group is-content-justification-left is-layout-constrained wp-container-core-group-is-layout-8c890d92 wp-block-group-is-layout-constrained\">\n<figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"249\" height=\"213\" src=\"https:\/\/www.tektrade.ee\/en\/wp-content\/uploads\/sites\/2\/2025\/08\/ResizedImage249213-MFT-axial-tied-flanges.jpg\" alt=\"\" class=\"wp-image-3034\"\/><figcaption class=\"wp-element-caption\"><em><em>Axial Tied Flanges<\/em><\/em><\/figcaption><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-group is-layout-constrained wp-block-group-is-layout-constrained\">\n<figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"249\" height=\"213\" src=\"https:\/\/www.tektrade.ee\/en\/wp-content\/uploads\/sites\/2\/2025\/08\/ResizedImage249213-MWT-axial-tied-welding-ends.jpg\" alt=\"\" class=\"wp-image-3035\"\/><figcaption class=\"wp-element-caption\"><em>Axial Tied Welding Ends<br><\/em><\/figcaption><\/figure>\n<\/div>\n<\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Universal tied expansion joints<\/li>\n<\/ul>\n\n\n\n<p>Compensates lateral movement in all levels. Using these kinds of expansion joints, adequate anchors and guides are installed to pipeline<\/p>\n\n\n\n<div class=\"wp-block-group is-layout-grid wp-container-core-group-is-layout-baef362d wp-block-group-is-layout-grid\">\n<div class=\"wp-block-group is-content-justification-left is-layout-constrained wp-container-core-group-is-layout-8c890d92 wp-block-group-is-layout-constrained\">\n<figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"249\" height=\"213\" src=\"https:\/\/www.tektrade.ee\/en\/wp-content\/uploads\/sites\/2\/2025\/08\/ResizedImage249213-MFL-universal-tied-flanges.jpg\" alt=\"\" class=\"wp-image-3036\"\/><figcaption class=\"wp-element-caption\"><em><em>Universal Tied Flanges<\/em><\/em><\/figcaption><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-group is-layout-constrained wp-block-group-is-layout-constrained\">\n<figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"249\" height=\"213\" src=\"https:\/\/www.tektrade.ee\/en\/wp-content\/uploads\/sites\/2\/2025\/08\/ResizedImage249213-MWL-universal-tied-welding-ends.jpg\" alt=\"\" class=\"wp-image-3037\"\/><figcaption class=\"wp-element-caption\">Universal Tied Welding Ends<br><\/figcaption><\/figure>\n<\/div>\n<\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Expansion joints for high pressure systems\u00a0<\/li>\n<\/ul>\n\n\n\n<p>Bellows of expansion joints are reinforced with metal rings what prevent deformation of the bellow in case of high pressure. These bellows fit to any type of expansion joints (axial, lateral or angular movement).&nbsp;<\/p>\n\n\n\n<div class=\"wp-block-group is-nowrap is-layout-flex wp-container-core-group-is-layout-ad2f72ca wp-block-group-is-layout-flex\">\n<div class=\"wp-block-group is-layout-constrained wp-block-group-is-layout-constrained\">\n<figure class=\"wp-block-image alignleft size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"249\" height=\"213\" src=\"https:\/\/www.tektrade.ee\/en\/wp-content\/uploads\/sites\/2\/2025\/08\/ResizedImage249213-MRR-high-pressure-reinforcement-rings.jpg\" alt=\"\" class=\"wp-image-3038\"\/><figcaption class=\"wp-element-caption\"><em>High Pressure Reinforcement Rings<\/em><\/figcaption><\/figure>\n<\/div>\n<\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Expansion joints for district heating pipelines<\/li>\n<\/ul>\n\n\n\n<p>They resemble to \u201cunrestrained\u201d expansion joints, but they are provided with inner sleeve as well as with external cover. In addition there is installed a protection for contraction, extension and for unexpected twists.&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Externally pressurized expansion joints<\/li>\n<\/ul>\n\n\n\n<p>Designed for cases in which the fluid pressure acts on outside of bellows and the atmospheric pressure from inside. This ensures stability and equal pressure on both sides of the bellows. Perfect expansion joint for compensating high pressure and large axial movements.&nbsp;<\/p>\n\n\n\n<div class=\"wp-block-group is-nowrap is-layout-flex wp-container-core-group-is-layout-ad2f72ca wp-block-group-is-layout-flex\">\n<div class=\"wp-block-group is-layout-constrained wp-block-group-is-layout-constrained\">\n<figure class=\"wp-block-image alignleft size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"249\" height=\"213\" src=\"https:\/\/www.tektrade.ee\/en\/wp-content\/uploads\/sites\/2\/2025\/08\/ResizedImage249213-MEP-externally-pressurized.jpg\" alt=\"\" class=\"wp-image-3218\"\/><figcaption class=\"wp-element-caption\"><em>Externally Pressurized<\/em><\/figcaption><\/figure>\n<\/div>\n<\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Thick wall expansion joints<\/li>\n<\/ul>\n\n\n\n<p>These expansion joints are characterized by a high convolution profile and thick ply construction. They can be manufactured in circular, oval or any particular shape. They are characterized with one or more convolutions and supplied with flanged or welded ends or bellows element only. Thick Wall expansion joints are frequently used in heat exchangers, furnace and blast furnace pipe work. &nbsp;<\/p>\n\n\n\n<div class=\"wp-block-group is-nowrap is-layout-flex wp-container-core-group-is-layout-ad2f72ca wp-block-group-is-layout-flex\">\n<div class=\"wp-block-group is-layout-constrained wp-block-group-is-layout-constrained\">\n<figure class=\"wp-block-image alignleft size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"249\" height=\"213\" src=\"https:\/\/www.tektrade.ee\/en\/wp-content\/uploads\/sites\/2\/2025\/08\/ResizedImage249213-M-LENS-thick-wall-flanged-flued-1.jpg\" alt=\"\" class=\"wp-image-3219\"\/><figcaption class=\"wp-element-caption\"><em>M-LENS Thick Wall Flanged<\/em><\/figcaption><\/figure>\n<\/div>\n<\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Rectangular expansion joints<\/li>\n<\/ul>\n\n\n\n<p>Rectangular expansion joints are described with U-shaped convolutions and round corner (MRU), V-shaped convolutions and camera corner (MRW) or with V-shaped convolutions and miter corner (MRV).&nbsp;<\/p>\n\n\n\n<div class=\"wp-block-group is-layout-grid wp-container-core-group-is-layout-6be84c55 wp-block-group-is-layout-grid\">\n<div class=\"wp-block-group is-content-justification-left is-layout-constrained wp-container-core-group-is-layout-8c890d92 wp-block-group-is-layout-constrained\">\n<figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"249\" height=\"213\" src=\"https:\/\/www.tektrade.ee\/en\/wp-content\/uploads\/sites\/2\/2025\/08\/ResizedImage249213-MRW-rectangular-camera.jpg\" alt=\"\" class=\"wp-image-3042\"\/><figcaption class=\"wp-element-caption\">MRW Rectangular Camera<br><\/figcaption><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-group is-layout-constrained wp-block-group-is-layout-constrained\">\n<figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"249\" height=\"213\" src=\"https:\/\/www.tektrade.ee\/en\/wp-content\/uploads\/sites\/2\/2025\/08\/ResizedImage249213-MRU-rectangular-rounded.jpg\" alt=\"\" class=\"wp-image-3043\"\/><figcaption class=\"wp-element-caption\">MRU Rectangular Rounded<br><\/figcaption><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-group is-layout-constrained wp-block-group-is-layout-constrained\">\n<figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"249\" height=\"212\" src=\"https:\/\/www.tektrade.ee\/en\/wp-content\/uploads\/sites\/2\/2025\/08\/ResizedImage249212-MRV-rectangular-miter.jpg\" alt=\"\" class=\"wp-image-3044\"\/><figcaption class=\"wp-element-caption\">MRV Rectangular Miter<br><\/figcaption><\/figure>\n<\/div>\n<\/div>\n\n\n\n<p>In addition \u201cGimbal\u201d, \u201cHinged\u201d, \u201cFCCU\u201c, \u201cJacketed\u201d expansion joints are available.<\/p>\n\n\n\n<div class=\"wp-block-file\"><a id=\"wp-block-file--media-4b3630cd-57b8-4f7f-baac-609119127cbb\" href=\"https:\/\/www.tektrade.ee\/en\/wp-content\/uploads\/sites\/2\/2025\/08\/metal-expansion-joints.pdf\" target=\"_blank\" rel=\"noreferrer noopener\">Product Catalogue<\/a><\/div>\n","protected":false},"featured_media":0,"parent":2877,"menu_order":38,"template":"","class_list":["post-3030","product","type-product","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.tektrade.ee\/en\/wp-json\/wp\/v2\/product\/3030","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.tektrade.ee\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.tektrade.ee\/en\/wp-json\/wp\/v2\/types\/product"}],"version-history":[{"count":4,"href":"https:\/\/www.tektrade.ee\/en\/wp-json\/wp\/v2\/product\/3030\/revisions"}],"predecessor-version":[{"id":3222,"href":"https:\/\/www.tektrade.ee\/en\/wp-json\/wp\/v2\/product\/3030\/revisions\/3222"}],"up":[{"embeddable":true,"href":"https:\/\/www.tektrade.ee\/en\/wp-json\/wp\/v2\/product\/2877"}],"wp:attachment":[{"href":"https:\/\/www.tektrade.ee\/en\/wp-json\/wp\/v2\/media?parent=3030"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}