{"id":6055,"date":"2025-04-11T07:53:45","date_gmt":"2025-04-11T07:53:45","guid":{"rendered":"https:\/\/prototekparts.com\/?p=6055"},"modified":"2025-04-11T07:56:08","modified_gmt":"2025-04-11T07:56:08","slug":"a-comprehensive-guide-to-flange","status":"publish","type":"post","link":"https:\/\/prototekparts.com\/it\/a-comprehensive-guide-to-flange\/","title":{"rendered":"Una guida completa alle flange"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"6055\" class=\"elementor elementor-6055\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-62b36767 elementor-section-height-min-height elementor-section-content-middle elementor-section-boxed elementor-section-height-default elementor-section-items-middle wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no\" data-id=\"62b36767\" data-element_type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t\t<div class=\"elementor-background-overlay\"><\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-5c5132c7\" data-id=\"5c5132c7\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-b432773 elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"b432773\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Una guida completa alle flange<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-5ab64424 elementor-section-boxed elementor-section-height-default elementor-section-height-default wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no\" data-id=\"5ab64424\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-66 elementor-top-column elementor-element elementor-element-59e3ef11\" data-id=\"59e3ef11\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-2d3a06bd elementor-invisible elementor-widget elementor-widget-post-info\" data-id=\"2d3a06bd\" data-element_type=\"widget\" data-settings=\"{&quot;_animation_tablet&quot;:&quot;fadeInUp&quot;,&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"post-info.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<ul class=\"elementor-inline-items elementor-icon-list-items elementor-post-info\">\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item elementor-repeater-item-63bb4ef elementor-inline-item\" itemprop=\"author\">\n\t\t\t\t\t\t<a href=\"https:\/\/prototekparts.com\/it\/author\/tami\/\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"jki jki-user-light\"><\/i>\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text elementor-post-info__item elementor-post-info__item--type-author\">\n\t\t\t\t\t\t\t\t\t\tTami\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t<\/li>\n\t\t\t\t<li class=\"elementor-icon-list-item elementor-repeater-item-c6ed1e9 elementor-inline-item\" itemprop=\"datePublished\">\n\t\t\t\t\t\t<a href=\"https:\/\/prototekparts.com\/it\/2025\/04\/11\/\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"fas fa-calendar\"><\/i>\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text elementor-post-info__item elementor-post-info__item--type-date\">\n\t\t\t\t\t\t\t\t\t\t<time>Aprile 11, 2025<\/time>\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t<\/li>\n\t\t\t\t<\/ul>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3b92f96f elementor-widget elementor-widget-image\" data-id=\"3b92f96f\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/prototekparts.com\/it\/\">\n\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"2560\" height=\"1280\" src=\"https:\/\/prototekparts.com\/wp-content\/uploads\/2025\/04\/flange-scaled.avif\" class=\"attachment-full size-full wp-image-6064\" alt=\"\" srcset=\"https:\/\/prototekparts.com\/wp-content\/uploads\/2025\/04\/flange-scaled.avif 2560w, https:\/\/prototekparts.com\/wp-content\/uploads\/2025\/04\/flange-300x150.avif 300w, https:\/\/prototekparts.com\/wp-content\/uploads\/2025\/04\/flange-1024x512.avif 1024w, https:\/\/prototekparts.com\/wp-content\/uploads\/2025\/04\/flange-768x384.avif 768w, https:\/\/prototekparts.com\/wp-content\/uploads\/2025\/04\/flange-1536x768.avif 1536w, https:\/\/prototekparts.com\/wp-content\/uploads\/2025\/04\/flange-2048x1024.avif 2048w, https:\/\/prototekparts.com\/wp-content\/uploads\/2025\/04\/flange-18x9.avif 18w\" sizes=\"(max-width: 2560px) 100vw, 2560px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\"><\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5bcc312 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"5bcc312\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<h2><strong><b>What is a flange?<\/b><\/strong><\/h2><p>Brief definition: A flange is a mechanical component used to connect pipes, valves, pumps and other equipment, and is often used to form a sealed connection.<\/p><p>Function: connection, sealing, easy maintenance (detachable), suitable for high-pressure and high-temperature occasions.<\/p><p>Application areas: petroleum and natural gas, chemical industry, electric power, shipbuilding, water treatment, etc.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-efb8981 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"efb8981\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<h2><strong><b>Common flange types and characteristics<\/b><\/strong><\/h2><ol><li><strong>Weld Neck Flange (WN)<\/strong><\/li><\/ol><p>A butt-weld flange is a flange with a long tapered neck, the end of which is butt-welded to the pipe. Its neck gradually transitions to the thickness of the pipe, so it has good mechanical properties and stress resistance. Butt-weld flanges are suitable for high-temperature and high-pressure environments and are often used in key piping systems in industries such as oil, gas, and chemicals. This type of flange generally has a raised face (RF) or a ring joint face (RTJ).<\/p><ul><li>Features: With a long tapered neck, it is connected to the pipe by welding.<\/li><li>Application: Pipe systems with high pressure, high temperature, or severe vibration (such as the petrochemical industry, and power industry).<\/li><li>Advantages: Uniform stress distribution and strong fatigue resistance.<\/li><\/ul><ol start=\"2\"><li><strong>Slip-On Flange (SO)<\/strong><\/li><\/ol><p>The inner diameter of the flat welding flange is slightly larger than the outer diameter of the pipe. When installed, the flange is inserted into the end of the pipe and welded inside and outside. It has a simple structure and is easy to install. It is suitable for occasions with low pressure and less corrosiveness. Flat welding flanges are usually used in general industrial pipelines, and the joint surface can be flat (FF) or convex (RF).<\/p><ul><li>Features: Double-sided fillet welding after the pipe is inserted into the inner hole of the flange.<\/li><li>Application: Low-pressure, normal temperature system (such as water treatment, low-pressure gas pipeline).<\/li><li>Advantages: Low cost and easy installation.<\/li><\/ul><ol start=\"3\"><li><strong>Threaded Flange<\/strong><\/li><\/ol><p>Threaded flanges are connected to pipes with external threads through internal threads, without the need for welding, and are therefore suitable for use in situations where welding is not appropriate (such as inflammable and explosive environments). They are often used in low-pressure, small-diameter piping systems. Threaded flanges are suitable for on-site assembly and disassembly, and are also suitable for systems that are sensitive to temperature fluctuations.<\/p><ul><li>Features: The inner hole of the flange is threaded and connected to the pipe thread.<\/li><li>Application: Low-pressure small-diameter pipelines (such as instrument pipelines, and fire protection systems).<\/li><li>Advantages: No welding required, suitable for flammable and explosive environments.<\/li><\/ul><ol start=\"4\"><li><strong>Blind Flange<\/strong><\/li><\/ol><p>A blind flange (also called a \u2018closure plate flange\u2019) is installed at the end of a piping system to terminate a pipe. It has no center hole (bore), so there is no flow through the flange. A blind flange may be used for isolating a pipe, valve, or pressure vessel. This\u00a0type of flange\u00a0is available in\u00a0all sizes\u00a0and\u00a0classes\u00a0and may use a\u00a0flat,\u00a0raised, or\u00a0ring-type joint\u00a0face.<\/p><ul><li>Features: No center hole, is used to block the opening of the pipeline or equipment.<\/li><li>Application: system isolation, pressure testing, or future expansion reservation.<\/li><li>Advantages: strong sealing and high pressure bearing capacity.<\/li><\/ul><ol start=\"5\"><li><strong>Lapped Joint Flange<\/strong><\/li><\/ol><p>The loose flange consists of two parts: a stub end and a loose flange ring. The flange ring can rotate freely on the stub end, which is convenient for centering and installation. Since the flange body is not welded to the pipe, it can be reused and is suitable for corrosive media (often used with lined pipes), which can save expensive material costs.<\/p><ul><li>Features: The flange and the pipe are connected through a stub end.<\/li><li>Application: Systems that are frequently disassembled (such as food and pharmaceutical industries).<\/li><li>Advantages: Can be rotated for alignment, reducing installation stress.<\/li><\/ul><ol start=\"6\"><li><strong>Socket Weld Flange (SW)<\/strong><\/li><\/ol><p>There is a step on the inner side of the socket welding flange, which is used for inserting the pipe before corner welding. This structure is suitable for small-caliber, high-pressure systems, and has good sealing and strength after installation. Its welding part is not easy to generate eddy current or stress concentration, and is suitable for high-pressure but low-temperature occasions.<\/p><ul><li>Features: The pipe is inserted into the flange socket and then welded on one side.<\/li><li>Application: Small-diameter high-pressure pipelines (such as hydraulic systems and chemical plants)<\/li><li>Advantages: High weld strength, suitable for thin-walled pipelines.<\/li><\/ul>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8721e92 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"8721e92\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<h2><strong><b>Flange Face Types<\/b><\/strong><\/h2><p>Different types of flange faces serve as the contact surface for the gasket material. ASME B16.5 and B16.47 define various types of flange faces, including raised faces, large raised faces, and concave faces, which have the same dimensions to provide a relatively large contact area.<\/p><h3><strong>Raised Face<\/strong><strong>(RF)<\/strong><\/h3><p>The most widely utilized type of raised face flanges in process plant applications are easily recognized. Because the gasket surface is elevated above the bolt circle, they are known as raised faces. Different gasket design combinations, such as flat ring plate types and metal composites like spiral wound and double jacketed types, are made possible by this face type.<\/p><p>RF flanges are designed to increase the joint&#8217;s pressure-carrying capacity by applying greater pressure to a smaller gasket area. ASME B16.5 defines height and diameter according to pressure class. The height of the elevated face is determined by the flange&#8217;s pressure class.<\/p><p>ASME B16.5 RF flanges typically have a surface polish of 125 to 250 \u00b5 in Ra (3 to 6 \u00b5 m Ra).<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-39dd7ee elementor-widget elementor-widget-image\" data-id=\"39dd7ee\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"730\" height=\"247\" src=\"https:\/\/prototekparts.com\/wp-content\/uploads\/2025\/04\/flange_RF.avif\" class=\"attachment-large size-large wp-image-6057\" alt=\"\" srcset=\"https:\/\/prototekparts.com\/wp-content\/uploads\/2025\/04\/flange_RF.avif 730w, https:\/\/prototekparts.com\/wp-content\/uploads\/2025\/04\/flange_RF-300x102.avif 300w, https:\/\/prototekparts.com\/wp-content\/uploads\/2025\/04\/flange_RF-18x6.avif 18w\" sizes=\"(max-width: 730px) 100vw, 730px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2a98876 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"2a98876\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<h3><strong>Flat Face(FF)<\/strong><\/h3><p>The bolt circle surface and the gasket surface of a flat face flange are in the same plane. Flat face flanges are usually utilized in applications where the flange fitting or mating flange is cast.<\/p><p>Never fasten a flat face flange to a raised face flange. According to ASME B31.1, a full face gasket is needed and the raised face on the carbon steel flange must be removed when joining a flat face cast iron flange to it. This is to stop the thin, delicate cast iron flange from bouncing into the space made by the carbon steel flange&#8217;s raised face.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3ee965a elementor-widget elementor-widget-image\" data-id=\"3ee965a\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"728\" height=\"210\" src=\"https:\/\/prototekparts.com\/wp-content\/uploads\/2025\/04\/flange_FF.avif\" class=\"attachment-large size-large wp-image-6058\" alt=\"\" srcset=\"https:\/\/prototekparts.com\/wp-content\/uploads\/2025\/04\/flange_FF.avif 728w, https:\/\/prototekparts.com\/wp-content\/uploads\/2025\/04\/flange_FF-300x87.avif 300w, https:\/\/prototekparts.com\/wp-content\/uploads\/2025\/04\/flange_FF-18x5.avif 18w\" sizes=\"(max-width: 728px) 100vw, 728px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-32d6ba2 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"32d6ba2\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<h3><strong>Ring Type Joint<\/strong><strong>(RTJ)<\/strong><\/h3><p>For high-temperature service above 800\u00b0F (427\u00b0C) and\/or high pressure (Class 600 and above), ring-type joint flanges are commonly utilized. Steel ring-shaped gaskets can be received in grooves on the flange surface. A metal-to-metal seal is created when the bolts are tightened, compressing the gasket between the flanges into the grooves and def\u00a0orming (or coining) it to achieve close contact. <br \/><br \/>An annular groove may be machined into the raised face of RTJ flanges. The sealing device does not use this raised face in any way. The raised faces of the connecting and fastening flanges may come into touch with one another in RTJ flanges that are sealed with ring-shaped gaskets. In this scenario, vibration and movement cannot further crush the compression gasket and release the connection tension, nor will it be subjected to weights over the bolt tension.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fe10373 elementor-widget elementor-widget-image\" data-id=\"fe10373\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"730\" height=\"188\" src=\"https:\/\/prototekparts.com\/wp-content\/uploads\/2025\/04\/flg_rtj.avif\" class=\"attachment-large size-large wp-image-6059\" alt=\"\" srcset=\"https:\/\/prototekparts.com\/wp-content\/uploads\/2025\/04\/flg_rtj.avif 730w, https:\/\/prototekparts.com\/wp-content\/uploads\/2025\/04\/flg_rtj-300x77.avif 300w, https:\/\/prototekparts.com\/wp-content\/uploads\/2025\/04\/flg_rtj-18x5.avif 18w\" sizes=\"(max-width: 730px) 100vw, 730px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-483a4ba elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"483a4ba\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<h3><strong>Tongue and Groove<\/strong><strong>(TG)<\/strong><\/h3><p>This flange&#8217;s tongue and groove faces need to line up. One flange face has a raised ring (tenon) carved into it, and the corresponding flange face has a matching depression (groove) drilled into it. <br \/><br \/>There are two varieties of tongue and groove faces: large and small. Both are standardized. They secure the gasket to its ID and OD because, unlike male and female flanges, the ID of the tongue and groove face does not extend into the flange base. These are frequently seen on valve bonnets and pump covers.<br \/><br \/>Another benefit of tongue and groove joints is that they serve as an adhesive reservoir and self-align. Miter joints don&#8217;t need extensive machining and maintain the load axis in line with the joint. <br \/><br \/>It is never advisable to bolt together general flange faces like RTJ, TandG, and FandM. The contact faces are mismatched, and there isn&#8217;t a gasket with one type on one side and another on the other.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5c6329d elementor-widget elementor-widget-image\" data-id=\"5c6329d\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"730\" height=\"193\" src=\"https:\/\/prototekparts.com\/wp-content\/uploads\/2025\/04\/flg_tg.avif\" class=\"attachment-large size-large wp-image-6060\" alt=\"\" srcset=\"https:\/\/prototekparts.com\/wp-content\/uploads\/2025\/04\/flg_tg.avif 730w, https:\/\/prototekparts.com\/wp-content\/uploads\/2025\/04\/flg_tg-300x79.avif 300w, https:\/\/prototekparts.com\/wp-content\/uploads\/2025\/04\/flg_tg-18x5.avif 18w\" sizes=\"(max-width: 730px) 100vw, 730px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d6fde3e elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"d6fde3e\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<h3><strong>Male and Female<\/strong><strong>(FM)<\/strong><\/h3><p>The flanges of this type must also match. There is an area on one flange face that is larger than the typical flange face (convex face). A concave face, or matching depression, is machined into the surface of the opposite flange, also known as the mating flange. <br \/><br \/>Both the convex and concave faces are sanded and measure 1\/4 inch high and 3\/16 inch deep, respectively. The gasket is located and fastened using the concave face&#8217;s outer diameter. Theoretically, there are two types of M&amp;F flanges: small and large. Heat exchanger shells frequently have convex and concave faces that are custom-made to cover and guide the flanges.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5557688 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"5557688\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<h2><strong>Flange material selection<\/strong><\/h2>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3e4aae2 eael-table-align-center eael-dt-th-align-left elementor-widget elementor-widget-eael-data-table\" data-id=\"3e4aae2\" data-element_type=\"widget\" data-widget_type=\"eael-data-table.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"eael-data-table-wrap\" data-table_id=\"3e4aae2\" id=\"eael-data-table-wrapper-3e4aae2\" data-custom_responsive=\"false\">\n\t\t\t<table class=\"tablesorter eael-data-table center\" id=\"eael-data-table-3e4aae2\">\n\t\t\t    <thead>\n\t\t\t        <tr class=\"table-header\">\n\t\t\t\t\t\t\t\t\t            <th class=\"\" id=\"\" colspan=\"\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"data-table-header-text\">Materiale<\/span><\/th>\n\t\t\t        \t\t\t\t            <th class=\"\" id=\"\" colspan=\"\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"data-table-header-text\">Feature<\/span><\/th>\n\t\t\t        \t\t\t\t            <th class=\"\" id=\"\" colspan=\"\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"data-table-header-text\">Applicazione<\/span><\/th>\n\t\t\t        \t\t\t\t        <\/tr>\n\t\t\t    <\/thead>\n\t\t\t  \t<tbody>\n\t\t\t\t\t\t\t\t\t\t\t<tr>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t   \t\t\t\t\t\t\t\t\t\t\t<td colspan=\"\" rowspan=\"\" class=\"\" id=\"\">\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"td-content-wrapper\"><div class=\"td-content\">\n\t\t\t\t\t\t\t\t\t\t\t\t\tCarbon steel\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t   \t\t\t\t\t\t\t\t\t\t\t<td colspan=\"\" rowspan=\"\" class=\"\" id=\"\">\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"td-content-wrapper\"><div class=\"td-content\">\n\t\t\t\t\t\t\t\t\t\t\t\t\tLow cost, good mechanical properties\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t   \t\t\t\t\t\t\t\t\t\t\t<td colspan=\"\" rowspan=\"\" class=\"\" id=\"\">\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"td-content-wrapper\"><div class=\"td-content\">\n\t\t\t\t\t\t\t\t\t\t\t\t\tNormal temperature and pressure water and steam system\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/tr>\n\t\t\t        \t\t\t\t\t\t<tr>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t   \t\t\t\t\t\t\t\t\t\t\t<td colspan=\"\" rowspan=\"\" class=\"\" id=\"\">\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"td-content-wrapper\"><div class=\"td-content\">\n\t\t\t\t\t\t\t\t\t\t\t\t\tStainless steel\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t   \t\t\t\t\t\t\t\t\t\t\t<td colspan=\"\" rowspan=\"\" class=\"\" id=\"\">\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"td-content-wrapper\"><div class=\"td-content\">\n\t\t\t\t\t\t\t\t\t\t\t\t\tStrong corrosion resistance\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t   \t\t\t\t\t\t\t\t\t\t\t<td colspan=\"\" rowspan=\"\" class=\"\" id=\"\">\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"td-content-wrapper\"><div class=\"td-content\">\n\t\t\t\t\t\t\t\t\t\t\t\t\tCorrosive environments such as chemical, food, and medicine\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/tr>\n\t\t\t        \t\t\t\t\t\t<tr>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t   \t\t\t\t\t\t\t\t\t\t\t<td colspan=\"\" rowspan=\"\" class=\"\" id=\"\">\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"td-content-wrapper\"><div class=\"td-content\">\n\t\t\t\t\t\t\t\t\t\t\t\t\tAlloy steel\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t   \t\t\t\t\t\t\t\t\t\t\t<td colspan=\"\" rowspan=\"\" class=\"\" id=\"\">\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"td-content-wrapper\"><div class=\"td-content\">\n\t\t\t\t\t\t\t\t\t\t\t\t\tExcellent performance at high temperature and high pressure\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t   \t\t\t\t\t\t\t\t\t\t\t<td colspan=\"\" rowspan=\"\" class=\"\" id=\"\">\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"td-content-wrapper\"><div class=\"td-content\">\n\t\t\t\t\t\t\t\t\t\t\t\t\tHigh-intensity working conditions such as petrochemical and power plants\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/tr>\n\t\t\t        \t\t\t\t\t\t<tr>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t   \t\t\t\t\t\t\t\t\t\t\t<td colspan=\"\" rowspan=\"\" class=\"\" id=\"\">\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"td-content-wrapper\"><div class=\"td-content\">\n\t\t\t\t\t\t\t\t\t\t\t\t\tCopper, aluminum, titanium, Hastelloy, etc.\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t   \t\t\t\t\t\t\t\t\t\t\t<td colspan=\"\" rowspan=\"\" class=\"\" id=\"\">\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"td-content-wrapper\"><div class=\"td-content\">\n\t\t\t\t\t\t\t\t\t\t\t\t\tSpecial performance materials\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t   \t\t\t\t\t\t\t\t\t\t\t<td colspan=\"\" rowspan=\"\" class=\"\" id=\"\">\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"td-content-wrapper\"><div class=\"td-content\">\n\t\t\t\t\t\t\t\t\t\t\t\t\tSpecial media or light demand platform\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/tr>\n\t\t\t        \t\t\t    <\/tbody>\n\t\t\t<\/table>\n\t\t<\/div>\n\t  \t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5cfc284 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"5cfc284\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><strong>Material selection suggestions:<\/strong><\/p><ul><li>Strongly corrosive media (such as acid and alkali): 316 or Hastelloy is recommended<\/li><li>High-temperature steam: Cr-Mo alloy steel is recommended<\/li><li>Drinking water or food pipelines: Food-grade stainless steel (such as 304L) is recommended<\/li><\/ul>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6053092 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"6053092\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<h2><strong>How to choose the right flange<\/strong><\/h2><p><span style=\"font-size: 16px;\">Choosing the right flange requires comprehensive consideration of system parameters, economic costs, maintenance difficulty and other factors:<\/span><\/p><p>1. According to pressure and temperature<\/p><ul><li>High-pressure and high-temperature systems should use butt-weld flanges or socket-weld flanges<\/li><li>Medium and low-pressure systems can choose flat-weld flanges or threaded flanges<\/li><\/ul><p>2. According to the type of medium<\/p><ul><li>Stainless steel or special alloy materials are used for highly corrosive media<\/li><li>Carbon steel can be used for ordinary water systems<\/li><\/ul><p>3. According to installation method and maintainability<\/p><ul><li>Loose flanges can be used in occasions where frequent disassembly and assembly are required<\/li><li>Butt-weld flanges are firmly welded and suitable for systems with long-term stable operation<\/li><\/ul><p>4. According to international\/regional standards<\/p><ul><li>Export products must match the standards of the target market (such as ASME, DIN, and JIS)<\/li><li>Standards should be unified within the same project to avoid incompatible joints<\/li><\/ul><p>5. Other factors<\/p><ul><li>Cost budget<\/li><li>Flange surface form (RF, FF, RTJ)<\/li><li>Gasket type matching<\/li><\/ul>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4413937f elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"4413937f\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"flex flex-grow flex-col max-w-full\"><div class=\"min-h-[20px] text-message flex flex-col items-start whitespace-pre-wrap break-words [.text-message+&amp;]:mt-5 juice:w-full juice:items-end overflow-x-auto gap-2\" dir=\"auto\" data-message-author-role=\"assistant\" data-message-id=\"c53e57b0-bbca-470d-848a-8c704dd8be25\"><div class=\"flex w-full flex-col gap-1 juice:empty:hidden juice:first:pt-[3px]\"><div class=\"markdown prose w-full break-words dark:prose-invert light\"><p>Per qualsiasi necessit\u00e0, ci contatti via e-mail all'indirizzo <a href=\"mailto:Lynnyao@ebi-china.com\"><u>Lynnyao@prototekparts.com<\/u><\/a> o telefonare: +86-0792-86372550<\/p><\/div><\/div><\/div><\/div><h6><!-- notionvc: c448ee40-ca1e-4aed-8d40-d6a525e2eb3b --><\/h6><p><!-- notionvc: 3c8c08d2-14b4-41e0-9fe2-e1ced2c249e2 --><\/p><p><!-- notionvc: b826800e-a7e0-4a1c-a39d-b01e6b0b8e15 --><\/p><p><!-- notionvc: d08a39bd-bf44-438d-831c-be3cc808c5e1 --><\/p><p><!-- notionvc: b1c7543b-879e-417b-93f9-7b40cf0df398 --><\/p><p><!-- notionvc: 43e022ac-3145-474d-8e13-2b42e42a3481 --><\/p><p><!-- notionvc: 5376446e-60cb-46ec-9397-fc5849316e57 --><\/p><p><!-- notionvc: 2536c352-1baa-4f0f-a31c-c37602f6f057 --><\/p><p><!-- notionvc: dbc853e9-f394-42ca-b1c2-9dbc27d6a67a --><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-7d4af9b6 elementor-section-content-middle elementor-section-boxed elementor-section-height-default elementor-section-height-default wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no elementor-invisible\" data-id=\"7d4af9b6\" data-element_type=\"section\" data-settings=\"{&quot;animation_tablet&quot;:&quot;fadeInUp&quot;,&quot;animation&quot;:&quot;fadeInUp&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-no\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-3e4e0760\" data-id=\"3e4e0760\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-73d2395c elementor-widget__width-auto elementor-widget-mobile__width-inherit elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"73d2395c\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Tags:    <\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1e2d420 elementor-widget__width-auto elementor-invisible elementor-widget elementor-widget-post-info\" data-id=\"1e2d420\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"post-info.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<ul class=\"elementor-inline-items elementor-icon-list-items elementor-post-info\">\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item elementor-repeater-item-3e11d6e elementor-inline-item\">\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"far fa-tags\"><\/i>\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text elementor-post-info__item elementor-post-info__item--type-custom\">\n\t\t\t\t\t\t\t\t\t\tProdotti per macchine a vite automatiche\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t<\/ul>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-5bc4a139\" data-id=\"5bc4a139\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-352b194a elementor-widget__width-auto elementor-widget-mobile__width-inherit elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"352b194a\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Rete sociale:<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-37cf15c0 elementor-share-buttons--view-icon elementor-share-buttons--skin-flat elementor-share-buttons--shape-circle elementor-share-buttons--align-left elementor-share-buttons--color-custom elementor-widget__width-auto elementor-widget-mobile__width-inherit elementor-grid-0 elementor-widget elementor-widget-share-buttons\" data-id=\"37cf15c0\" data-element_type=\"widget\" data-widget_type=\"share-buttons.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-grid\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-grid-item\">\n\t\t\t\t\t\t<div\n\t\t\t\t\t\t\tclass=\"elementor-share-btn elementor-share-btn_facebook\"\n\t\t\t\t\t\t\trole=\"button\"\n\t\t\t\t\t\t\ttabindex=\"0\"\n\t\t\t\t\t\t\taria-label=\"Share on facebook\"\n\t\t\t\t\t\t>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-share-btn__icon\">\n\t\t\t\t\t\t\t\t<i class=\"fab fa-facebook\" aria-hidden=\"true\"><\/i>\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-grid-item\">\n\t\t\t\t\t\t<div\n\t\t\t\t\t\t\tclass=\"elementor-share-btn elementor-share-btn_linkedin\"\n\t\t\t\t\t\t\trole=\"button\"\n\t\t\t\t\t\t\ttabindex=\"0\"\n\t\t\t\t\t\t\taria-label=\"Share on linkedin\"\n\t\t\t\t\t\t>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-share-btn__icon\">\n\t\t\t\t\t\t\t\t<i class=\"fab fa-linkedin\" aria-hidden=\"true\"><\/i>\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-top-column elementor-element elementor-element-5a13d4d\" data-id=\"5a13d4d\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-4fb3f9bc elementor-search-form--skin-classic elementor-search-form--button-type-icon elementor-search-form--icon-search elementor-invisible elementor-widget elementor-widget-search-form\" data-id=\"4fb3f9bc\" data-element_type=\"widget\" data-settings=\"{&quot;_animation_tablet&quot;:&quot;fadeInUp&quot;,&quot;_animation&quot;:&quot;fadeInUp&quot;,&quot;skin&quot;:&quot;classic&quot;}\" data-widget_type=\"search-form.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<search role=\"search\">\n\t\t\t<form class=\"elementor-search-form\" action=\"https:\/\/prototekparts.com\/it\" method=\"get\" data-trp-original-action=\"https:\/\/prototekparts.com\/it\">\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"elementor-search-form__container\">\n\t\t\t\t\t<label class=\"elementor-screen-only\" 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0791-86372550\n<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-2519444e elementor-section-boxed elementor-section-height-default elementor-section-height-default wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no\" data-id=\"2519444e\" data-element_type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-6ab664a7\" data-id=\"6ab664a7\" data-element_type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-2ad336fc elementor-section-boxed elementor-section-height-default elementor-section-height-default wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no\" data-id=\"2ad336fc\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-cf88ce3\" data-id=\"cf88ce3\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-5e70f9e0 elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"5e70f9e0\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">VUOLE DISCUTERE IN DETTAGLIO\n<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-de0c23e elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"de0c23e\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Contatti ora il nostro consulente\n<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-6625a79c\" data-id=\"6625a79c\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-672cd89a elementor-align-right elementor-mobile-align-center elementor-invisible elementor-widget elementor-widget-button\" data-id=\"672cd89a\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm elementor-animation-grow\" href=\"https:\/\/prototekparts.com\/it\/contact-us\/\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">CONTATTO<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>A Comprehensive Guide to Flange What is a flange? Brief definition: A flange is a mechanical component used to connect pipes, valves, pumps and other equipment, and is often used to form a sealed connection. Function: connection, sealing, easy maintenance (detachable), suitable for high-pressure and high-temperature occasions. Application areas: petroleum and natural gas, chemical industry, electric power, shipbuilding, water treatment, etc. Common flange types and characteristics Weld Neck Flange (WN) A butt-weld flange is a flange with a long tapered neck, the end of which is butt-welded to the pipe. Its neck gradually transitions to the thickness of the pipe, so it has good mechanical properties and stress resistance. Butt-weld flanges are suitable for high-temperature and high-pressure environments and are often used in key piping systems in industries such as oil, gas, and chemicals. This type of flange generally has a raised face (RF) or a ring joint face (RTJ). Features: With a long tapered neck, it is connected to the pipe by welding. Application: Pipe systems with high pressure, high temperature, or severe vibration (such as the petrochemical industry, and power industry). Advantages: Uniform stress distribution and strong fatigue resistance. Slip-On Flange (SO) The inner diameter of the flat welding flange is slightly larger than the outer diameter of the pipe. When installed, the flange is inserted into the end of the pipe and welded inside and outside. It has a simple structure and is easy to install. It is suitable for occasions with low pressure and less corrosiveness. Flat welding flanges are usually used in general industrial pipelines, and the joint surface can be flat (FF) or convex (RF). Features: Double-sided fillet welding after the pipe is inserted into the inner hole of the flange. Application: Low-pressure, normal temperature system (such as water treatment, low-pressure gas pipeline). Advantages: Low cost and easy installation. Threaded Flange Threaded flanges are connected to pipes with external threads through internal threads, without the need for welding, and are therefore suitable for use in situations where welding is not appropriate (such as inflammable and explosive environments). They are often used in low-pressure, small-diameter piping systems. Threaded flanges are suitable for on-site assembly and disassembly, and are also suitable for systems that are sensitive to temperature fluctuations. Features: The inner hole of the flange is threaded and connected to the pipe thread. Application: Low-pressure small-diameter pipelines (such as instrument pipelines, and fire protection systems). Advantages: No welding required, suitable for flammable and explosive environments. Blind Flange A blind flange (also called a \u2018closure plate flange\u2019) is installed at the end of a piping system to terminate a pipe. It has no center hole (bore), so there is no flow through the flange. A blind flange may be used for isolating a pipe, valve, or pressure vessel. This\u00a0type of flange\u00a0is available in\u00a0all sizes\u00a0and\u00a0classes\u00a0and may use a\u00a0flat,\u00a0raised, or\u00a0ring-type joint\u00a0face. Features: No center hole, is used to block the opening of the pipeline or equipment. Application: system isolation, pressure testing, or future expansion reservation. Advantages: strong sealing and high pressure bearing capacity. Lapped Joint Flange The loose flange consists of two parts: a stub end and a loose flange ring. The flange ring can rotate freely on the stub end, which is convenient for centering and installation. Since the flange body is not welded to the pipe, it can be reused and is suitable for corrosive media (often used with lined pipes), which can save expensive material costs. Features: The flange and the pipe are connected through a stub end. Application: Systems that are frequently disassembled (such as food and pharmaceutical industries). Advantages: Can be rotated for alignment, reducing installation stress. Socket Weld Flange (SW) There is a step on the inner side of the socket welding flange, which is used for inserting the pipe before corner welding. This structure is suitable for small-caliber, high-pressure systems, and has good sealing and strength after installation. Its welding part is not easy to generate eddy current or stress concentration, and is suitable for high-pressure but low-temperature occasions. Features: The pipe is inserted into the flange socket and then welded on one side. Application: Small-diameter high-pressure pipelines (such as hydraulic systems and chemical plants) Advantages: High weld strength, suitable for thin-walled pipelines. Flange Face Types Different types of flange faces serve as the contact surface for the gasket material. ASME B16.5 and B16.47 define various types of flange faces, including raised faces, large raised faces, and concave faces, which have the same dimensions to provide a relatively large contact area. Raised Face(RF) The most widely utilized type of raised face flanges in process plant applications are easily recognized. Because the gasket surface is elevated above the bolt circle, they are known as raised faces. Different gasket design combinations, such as flat ring plate types and metal composites like spiral wound and double jacketed types, are made possible by this face type. RF flanges are designed to increase the joint&#8217;s pressure-carrying capacity by applying greater pressure to a smaller gasket area. ASME B16.5 defines height and diameter according to pressure class. The height of the elevated face is determined by the flange&#8217;s pressure class. ASME B16.5 RF flanges typically have a surface polish of 125 to 250 \u00b5 in Ra (3 to 6 \u00b5 m Ra). Flat Face(FF) The bolt circle surface and the gasket surface of a flat face flange are in the same plane. Flat face flanges are usually utilized in applications where the flange fitting or mating flange is cast. Never fasten a flat face flange to a raised face flange. According to ASME B31.1, a full face gasket is needed and the raised face on the carbon steel flange must be removed when joining a flat face cast iron flange to it. This is to stop the thin, delicate cast iron flange from bouncing into the space made by the carbon steel flange&#8217;s raised face. Ring Type Joint(RTJ) For high-temperature service above 800\u00b0F (427\u00b0C) and\/or high pressure (Class 600 and above), ring-type joint flanges are commonly<\/p>","protected":false},"author":4,"featured_media":6064,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-6055","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>A Comprehensive Guide to Flange - Prototek Parts<\/title>\n<meta name=\"description\" content=\"In this guide, you can know not only what are the types of flanges and face flanges but also how to choose the right flange.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/prototekparts.com\/it\/a-comprehensive-guide-to-flange\/\" \/>\n<meta property=\"og:locale\" content=\"it_IT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"A Comprehensive Guide to Flange - 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