{"id":3167,"date":"2026-03-27T14:50:24","date_gmt":"2026-03-27T13:50:24","guid":{"rendered":"https:\/\/www.nickelcasting.com\/?page_id=3167"},"modified":"2026-03-27T14:52:35","modified_gmt":"2026-03-27T13:52:35","slug":"blind","status":"publish","type":"page","link":"https:\/\/www.nickelcasting.com\/de\/product-forms\/flanges\/blind\/","title":{"rendered":"Blindflansche"},"content":{"rendered":"<div data-elementor-type=\"wp-page\" data-elementor-id=\"3167\" class=\"elementor elementor-3167\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-58f435c e-flex e-con-boxed e-con e-parent\" data-id=\"58f435c\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-94dc55e elementor-widget elementor-widget-html\" data-id=\"94dc55e\" data-element_type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<link rel=\"stylesheet\" href=\"\/zicss\/nickel5.css\">\n\n<div class=\"form-page-wrapper\">\n\n    <div class=\"breadcrumbs\">\n        <a href=\"\/de\/\">Startseite<\/a> \n        <span class=\"separator\">\/<\/span> \n        <a href=\"\/de\/product-forms\/\">Produkt Formulare<\/a>\n        <span class=\"separator\">\/<\/span> \n        <a href=\"\/de\/product-forms\/flanges\/\">Flansche<\/a>\n        <span class=\"separator\">\/<\/span> \n        Blindflansche\n    <\/div>\n\n    <div class=\"form-hero\">\n        <h1>Nickellegierte Blindflansche<\/h1>\n        \n        <p>\n            Wenn Sie ein Rohrleitungssystem sicher abschlie\u00dfen, einen Druckbeh\u00e4lter absperren oder eine Leitung f\u00fcr kritische Wartungsarbeiten isolieren m\u00fcssen, sind Blindflansche (BLRF \/ BLRTJ) der ultimative Schutz. 28Nickel stellt hochwertige, geschmiedete Blindflansche aus Nickellegierungen her, die den extremsten Innendr\u00fccken und hochkorrosiven, stehenden Medien in der chemischen Verarbeitung, der Offshore-Schifffahrt sowie der \u00d6l- und Gasindustrie standhalten.\n        <\/p>\n    <\/div>\n\n    <h2 class=\"section-title\">Verf\u00fcgbare Legierungssorten f\u00fcr Blindflansche<\/h2>\n    <p>\n        Da Blindflansche keine Mittelbohrung haben, nehmen sie von allen Flanschtypen die h\u00f6chsten Biegespannungen auf. Au\u00dferdem sammeln sich in Sackgassenleitungen oft stagnierende, korrosive Fl\u00fcssigkeiten an. Die Wahl einer hochfesten, lochfra\u00dfbest\u00e4ndigen Superlegierung - wie z. B. <a href=\"https:\/\/www.nickelcasting.com\/de\/nickellegierungen\/hastelloy-nickellegierungen\/hastelloy-c-276\/\">Hastelloy C-276<\/a> oder Inconel 718 - ist entscheidend, um katastrophale Ausf\u00e4lle zu verhindern.\n    <\/p>\n    \n    <div class=\"available-grades-box\">\n        <h3 style=\"margin-top:0; color: var(--primary-color); font-size: 1.2rem;\">W\u00e4hlen Sie eine Sorte, um die Materialspezifikationen anzuzeigen:<\/h3>\n        <div class=\"grade-tags-container\">\n            <a href=\"\/de\/nickellegierungen\/inconel-nickellegierungen\/inconel-625\/\" class=\"grade-tag\">Inconel\u00ae 625 (hervorragende Lochfra\u00dfbest\u00e4ndigkeit)<\/a>\n            <a href=\"\/de\/nickellegierungen\/inconel-nickellegierungen\/inconel-718\/\" class=\"grade-tag\">Inconel\u00ae 718 (hohe Streckgrenze\/Druck)<\/a>\n            \n            <a href=\"\/de\/nickellegierungen\/monel-metall-legierungen\/monel-400\/\" class=\"grade-tag\">Monel\u00ae 400 (HF-S\u00e4ure und Seewasser)<\/a>\n            <a href=\"\/de\/nickellegierungen\/monel-metall-legierungen\/monel-k500\/\" class=\"grade-tag\">Monel\u00ae K-500 (Marine\/Sauergas)<\/a>\n            \n            <a href=\"\/de\/nickellegierungen\/hastelloy-alloys\/hastelloy-c276\/\" class=\"grade-tag\">Hastelloy\u00ae C-276 (Schwere chemische Verarbeitung)<\/a>\n            <a href=\"\/de\/nickellegierungen\/waspaloy\/\" class=\"grade-tag\">Waspaloy\u00ae (Extreme Hochtemperatur-Auspuffanlagen)<\/a>\n        <\/div>\n    <\/div>\n\n    <h2 class=\"section-title\">Technische Merkmale und Variationen<\/h2>\n    <p style=\"margin-bottom: 25px;\">\n        \u00dcber die Standardflansche hinaus bieten wir spezielle Blindflansche f\u00fcr die Pr\u00fcfung von Rohrleitungen, die Instrumentierung und die routinem\u00e4\u00dfige Wartung an.\n    <\/p>\n    \n    <div class=\"forms-grid\">\n        \n        <div class=\"form-card\">\n            <div class=\"form-card-header\">\n                <div class=\"form-icon\">\ud83d\uded1<\/div>\n                <h3>Standard-Blindflansche<\/h3>\n            <\/div>\n            <p>Massive geschmiedete Scheiben, die zur Abdichtung der Enden von Rohrleitungssystemen oder Druckbeh\u00e4lter\u00f6ffnungen verwendet werden. Sie werden gegen einen Gegenflansch (typischerweise ein Vorschwei\u00df- oder Aufsteckflansch) geschraubt, um eine hochsichere, druckdichte Abdichtung zu schaffen.<\/p>\n        <\/div>\n\n        <div class=\"form-card\">\n            <div class=\"form-card-header\">\n                <div class=\"form-icon\">\ud83d\udc53<\/div>\n                <h3>Brillenjalousien (Abbildung 8)<\/h3>\n            <\/div>\n            <p>Eine spezielle Sicherheitsvorrichtung mit einer massiven Platte (um die Leitung abzusperren) und einer Ringplatte (um den Durchfluss zu erm\u00f6glichen), die durch einen Steg verbunden sind. Wird in Systemen verwendet, die eine h\u00e4ufige, absolute Isolierung f\u00fcr die Wartung erfordern.<\/p>\n        <\/div>\n\n        <div class=\"form-card\">\n            <div class=\"form-card-header\">\n                <div class=\"form-icon\">\ud83d\udeb0<\/div>\n                <h3>Gewindete Blindflansche<\/h3>\n            <\/div>\n            <p>Standard-Blindflansche, die mit einem zentralen Gewindeloch (NPT) pr\u00e4zise CNC-gefertigt wurden. Sie sind unerl\u00e4sslich f\u00fcr die Installation von Manometern, Entl\u00fcftungsventilen oder Entw\u00e4sserungsleitungen am Ende eines Rohrstrangs.<\/p>\n        <\/div>\n\n        <div class=\"form-card\">\n            <div class=\"form-card-header\">\n                <div class=\"form-icon\">\u2699\ufe0f<\/div>\n                <h3>Extreme Druckbest\u00e4ndigkeit<\/h3>\n            <\/div>\n            <p>Aufgrund des Fehlens einer zentralen \u00d6ffnung sind Blindflansche die strukturell st\u00e4rksten Flanschtypen. Wenn sie aus hochfesten Legierungen geschmiedet werden, wie <a href=\"https:\/\/www.nickelcasting.com\/de\/nickellegierungen\/inconel-nickellegierungen\/inconel-718\/\">Inconel 718<\/a>, Sie k\u00f6nnen problemlos schwere hydrostatische Druckpr\u00fcfungen und kontinuierliche Hochdruckeins\u00e4tze bew\u00e4ltigen.<\/p>\n        <\/div>\n\n    <\/div>\n\n    <div class=\"section-title\">Standard-Spezifikationen und Abmessungen<\/div>\n    <div class=\"data-table-wrap\">\n        <table class=\"tech-table\">\n            <thead>\n                <tr>\n                    <th width=\"30%\">Spezifikation Kategorie<\/th>\n                    <th width=\"70%\">Details &amp; Normen<\/th>\n                <\/tr>\n            <\/thead>\n            <tbody>\n                <tr>\n                    <td><strong>Abmessungsnormen<\/strong><\/td>\n                    <td>ASME \/ ANSI B16.5 (bis zu 24\"), ASME B16.47 Serie A &amp; B (gro\u00dfer Durchmesser &gt; 24\")<\/td>\n                <\/tr>\n                <tr>\n                    <td><strong>Druck-Klassen<\/strong><\/td>\n                    <td>150#, 300#, 600#, 900#, 1500#, 2500# (<a href=\"https:\/\/www.nickelcasting.com\/de\/nickellegierungen\/nickel-guss\/custom\/\">Benutzerdefiniert<\/a> Hochdruckdicken verf\u00fcgbar)<\/td>\n                <\/tr>\n                <tr>\n                    <td><strong>Bohrung Gr\u00f6\u00dfe<\/strong><\/td>\n                    <td>Keine (Vollscheibe). *Es sei denn, es handelt sich um einen Blindflansch mit Gewinde und NPT-Gewinde.<\/td>\n                <\/tr>\n                <tr>\n                    <td><strong>Flanschabdeckung<\/strong><\/td>\n                    <td>Erh\u00f6hte Fl\u00e4che (BLRF), flache Fl\u00e4che (BLFF), Ring Type Joint (BLRTJ) f\u00fcr maximale Abdichtung.<\/td>\n                <\/tr>\n                <tr>\n                    <td><strong>Herstellungsprozess<\/strong><\/td>\n                    <td>Hei\u00dfgeschmiedet und pr\u00e4zise CNC-bearbeitet. Niemals gegossen.<\/td>\n                <\/tr>\n            <\/tbody>\n        <\/table>\n    <\/div>\n\n    <div class=\"cta-block\">\n        <h3>M\u00fcssen Sie eine Leitung sicher blenden?<\/h3>\n        <p>Wenn Sie ein Angebot anfordern, geben Sie bitte die Legierungssorte (z.B. Hastelloy C-276), die Rohrnenngr\u00f6\u00dfe (NPS), die Druckklasse (z.B. 900#) und die Flanschfl\u00e4che (z.B. RTJ) an. Wenn Sie ein Blindgewinde ben\u00f6tigen, geben Sie bitte die erforderliche NPT-Gewindegr\u00f6\u00dfe an.<\/p>\n        <a href=\"\/de\/kontakt\/\" class=\"quote-btn\">Angebot f\u00fcr Blindflansche einholen<\/a>\n    <\/div>\n\n<\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Home \/ Product Forms \/ Flanges \/ Blind Flanges Nickel Alloy Blind Flanges When you need to securely terminate a piping system, blank off a pressure vessel, or isolate a line for critical maintenance, Blind Flanges (BLRF \/ BLRTJ) are the ultimate safeguard. 28Nickel manufactures premium forged nickel alloy blind flanges engineered to withstand the [&hellip;]<\/p>","protected":false},"author":1,"featured_media":0,"parent":3145,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"no-sidebar","site-content-layout":"page-builder","ast-site-content-layout":"full-width-container","site-content-style":"unboxed","site-sidebar-style":"unboxed","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"class_list":["post-3167","page","type-page","status-publish","hentry"],"spectra_custom_meta":{"_edit_lock":["1774619451:1"],"_edit_last":["1"],"_elementor_edit_mode":["builder"],"_astra_content_layout_flag":["disabled"],"ast-title-bar-display":["disabled"],"ast-featured-img":["disabled"],"site-content-layout":["page-builder"],"ast-site-content-layout":["full-width-container"],"site-sidebar-layout":["no-sidebar"],"_elementor_template_type":["wp-page"],"_elementor_version":["3.33.2"],"_elementor_pro_version":["3.32.3"],"rank_math_seo_score":["70"],"rank_math_internal_links_processed":["1"],"_wp_page_template":["default"],"_elementor_data":["[{\"id\":\"58f435c\",\"elType\":\"container\",\"settings\":{\"display_condition_list\":[{\"display_condition_login_status\":\"subscriber\",\"_id\":\"3a3bb3e\"}]},\"elements\":[{\"id\":\"94dc55e\",\"elType\":\"widget\",\"settings\":{\"html\":\"<link rel=\\\"stylesheet\\\" href=\\\"\\\/zicss\\\/nickel5.css\\\">\\n\\n<div class=\\\"form-page-wrapper\\\">\\n\\n    <div class=\\\"breadcrumbs\\\">\\n        <a href=\\\"\\\/\\\">Home<\\\/a> \\n        <span class=\\\"separator\\\">\\\/<\\\/span> \\n        <a href=\\\"\\\/product-forms\\\/\\\">Product Forms<\\\/a>\\n        <span class=\\\"separator\\\">\\\/<\\\/span> \\n        <a href=\\\"\\\/product-forms\\\/flanges\\\/\\\">Flanges<\\\/a>\\n        <span class=\\\"separator\\\">\\\/<\\\/span> \\n        Blind Flanges\\n    <\\\/div>\\n\\n    <div class=\\\"form-hero\\\">\\n        <h1>Nickel Alloy Blind Flanges<\\\/h1>\\n        \\n        <p>\\n            When you need to securely terminate a piping system, blank off a pressure vessel, or isolate a line for critical maintenance, Blind Flanges (BLRF \\\/ BLRTJ) are the ultimate safeguard. 28Nickel manufactures premium forged nickel alloy blind flanges engineered to withstand the most extreme internal pressures and highly corrosive stagnant media in chemical processing, offshore marine, and oil & gas environments.\\n        <\\\/p>\\n    <\\\/div>\\n\\n    <h2 class=\\\"section-title\\\">Available Alloy Grades for Blind Flanges<\\\/h2>\\n    <p>\\n        Because blind flanges lack a center bore, they absorb the highest bending stress of any flange type. Furthermore, dead-end lines often accumulate stagnant, corrosive fluids. Selecting a high-strength, pitting-resistant superalloy\\u2014such as Hastelloy C-276 or Inconel 718\\u2014is critical to preventing catastrophic failure.\\n    <\\\/p>\\n    \\n    <div class=\\\"available-grades-box\\\">\\n        <h3 style=\\\"margin-top:0; color: var(--primary-color); font-size: 1.2rem;\\\">Select a Grade to View Material Specs:<\\\/h3>\\n        <div class=\\\"grade-tags-container\\\">\\n            <a href=\\\"\\\/nickel-alloys\\\/inconel-nickel-alloys\\\/inconel-625\\\/\\\" class=\\\"grade-tag\\\">Inconel\\u00ae 625 (Excellent Pitting Resistance)<\\\/a>\\n            <a href=\\\"\\\/nickel-alloys\\\/inconel-nickel-alloys\\\/inconel-718\\\/\\\" class=\\\"grade-tag\\\">Inconel\\u00ae 718 (High Yield Strength\\\/Pressure)<\\\/a>\\n            \\n            <a href=\\\"\\\/nickel-alloys\\\/monel-metal-alloys\\\/monel-400\\\/\\\" class=\\\"grade-tag\\\">Monel\\u00ae 400 (HF Acid & Seawater)<\\\/a>\\n            <a href=\\\"\\\/nickel-alloys\\\/monel-metal-alloys\\\/monel-k500\\\/\\\" class=\\\"grade-tag\\\">Monel\\u00ae K-500 (Marine\\\/Sour Gas)<\\\/a>\\n            \\n            <a href=\\\"\\\/nickel-alloys\\\/hastelloy-alloys\\\/hastelloy-c276\\\/\\\" class=\\\"grade-tag\\\">Hastelloy\\u00ae C-276 (Severe Chemical Processing)<\\\/a>\\n            <a href=\\\"\\\/nickel-alloys\\\/waspaloy\\\/\\\" class=\\\"grade-tag\\\">Waspaloy\\u00ae (Extreme High Temp Exhausts)<\\\/a>\\n        <\\\/div>\\n    <\\\/div>\\n\\n    <h2 class=\\\"section-title\\\">Engineering Features & Variations<\\\/h2>\\n    <p style=\\\"margin-bottom: 25px;\\\">\\n        Beyond standard solid blanking flanges, we provide specialized blind configurations tailored for pipeline testing, instrumentation, and routine maintenance.\\n    <\\\/p>\\n    \\n    <div class=\\\"forms-grid\\\">\\n        \\n        <div class=\\\"form-card\\\">\\n            <div class=\\\"form-card-header\\\">\\n                <div class=\\\"form-icon\\\">\\ud83d\\uded1<\\\/div>\\n                <h3>Standard Blind Flanges<\\\/h3>\\n            <\\\/div>\\n            <p>Solid forged disks used to seal the ends of piping systems or pressure vessel openings. They are bolted against a mating flange (typically a weld neck or slip-on) to create a highly secure, pressure-tight seal.<\\\/p>\\n        <\\\/div>\\n\\n        <div class=\\\"form-card\\\">\\n            <div class=\\\"form-card-header\\\">\\n                <div class=\\\"form-icon\\\">\\ud83d\\udc53<\\\/div>\\n                <h3>Spectacle Blinds (Figure-8)<\\\/h3>\\n            <\\\/div>\\n            <p>A specialized safety device featuring a solid plate (to blind the line) and a ring plate (to allow flow) connected by a web. Used in systems requiring frequent, absolute isolation for maintenance.<\\\/p>\\n        <\\\/div>\\n\\n        <div class=\\\"form-card\\\">\\n            <div class=\\\"form-card-header\\\">\\n                <div class=\\\"form-icon\\\">\\ud83d\\udeb0<\\\/div>\\n                <h3>Tapped Blind Flanges<\\\/h3>\\n            <\\\/div>\\n            <p>Standard blind flanges that have been precision CNC-machined with a threaded center hole (NPT). These are essential for installing pressure gauges, bleed valves, or drainage lines at the end of a pipe run.<\\\/p>\\n        <\\\/div>\\n\\n        <div class=\\\"form-card\\\">\\n            <div class=\\\"form-card-header\\\">\\n                <div class=\\\"form-icon\\\">\\u2699\\ufe0f<\\\/div>\\n                <h3>Extreme Pressure Resistance<\\\/h3>\\n            <\\\/div>\\n            <p>Due to the lack of a center opening, blind flanges are structurally the strongest flange type. When forged from high-yield alloys like Inconel 718, they can easily manage severe hydrostatic pressure testing and continuous high-pressure service.<\\\/p>\\n        <\\\/div>\\n\\n    <\\\/div>\\n\\n    <div class=\\\"section-title\\\">Standard Specifications & Dimensions<\\\/div>\\n    <div class=\\\"data-table-wrap\\\">\\n        <table class=\\\"tech-table\\\">\\n            <thead>\\n                <tr>\\n                    <th width=\\\"30%\\\">Specification Category<\\\/th>\\n                    <th width=\\\"70%\\\">Details & Standards<\\\/th>\\n                <\\\/tr>\\n            <\\\/thead>\\n            <tbody>\\n                <tr>\\n                    <td><strong>Dimensional Standards<\\\/strong><\\\/td>\\n                    <td>ASME \\\/ ANSI B16.5 (Up to 24\\\"), ASME B16.47 Series A & B (Large Diameter > 24\\\")<\\\/td>\\n                <\\\/tr>\\n                <tr>\\n                    <td><strong>Pressure Classes<\\\/strong><\\\/td>\\n                    <td>150#, 300#, 600#, 900#, 1500#, 2500# (Custom high-pressure thicknesses available)<\\\/td>\\n                <\\\/tr>\\n                <tr>\\n                    <td><strong>Bore Size<\\\/strong><\\\/td>\\n                    <td>None (Solid disk). *Unless specified as a Tapped Blind Flange with NPT threading.<\\\/td>\\n                <\\\/tr>\\n                <tr>\\n                    <td><strong>Flange Facing<\\\/strong><\\\/td>\\n                    <td>Raised Face (BLRF), Flat Face (BLFF), Ring Type Joint (BLRTJ) for max sealing.<\\\/td>\\n                <\\\/tr>\\n                <tr>\\n                    <td><strong>Manufacturing Process<\\\/strong><\\\/td>\\n                    <td>Hot Forged and Precision CNC Machined. Never cast.<\\\/td>\\n                <\\\/tr>\\n            <\\\/tbody>\\n        <\\\/table>\\n    <\\\/div>\\n\\n    <div class=\\\"cta-block\\\">\\n        <h3>Need to Securely Blind a Line?<\\\/h3>\\n        <p>When requesting a quote, please specify the alloy grade (e.g., Hastelloy C-276), nominal pipe size (NPS), pressure class (e.g., 900#), and flange facing (e.g., RTJ). If you need a tapped blind, please provide the required NPT thread size.<\\\/p>\\n        <a href=\\\"\\\/contact\\\/\\\" class=\\\"quote-btn\\\">Get a Blind Flange Quote<\\\/a>\\n    <\\\/div>\\n\\n<\\\/div>\",\"display_condition_list\":[{\"display_condition_login_status\":\"subscriber\",\"_id\":\"821f165\"}]},\"elements\":[],\"widgetType\":\"html\"}],\"isInner\":false}]"],"_elementor_page_settings":["a:0:{}"],"_elementor_controls_usage":["a:2:{s:4:\"html\";a:3:{s:5:\"count\";i:1;s:15:\"control_percent\";i:0;s:8:\"controls\";a:2:{s:7:\"content\";a:1:{s:13:\"section_title\";a:1:{s:4:\"html\";i:1;}}s:8:\"advanced\";a:1:{s:26:\"display_conditions_section\";a:1:{s:22:\"display_condition_list\";i:1;}}}}s:9:\"container\";a:3:{s:5:\"count\";i:1;s:15:\"control_percent\";i:0;s:8:\"controls\";a:1:{s:8:\"advanced\";a:1:{s:26:\"display_conditions_section\";a:1:{s:22:\"display_condition_list\";i:1;}}}}}"],"rank_math_focus_keyword":["blind flanges"],"rank_math_description":["Nickel alloy blind flanges in Inconel, Monel, Hastelloy and Waspaloy for high-pressure, corrosive chemical, marine and oil gas systems."],"ilj_blacklistdefinition":["a:0:{}"],"ilj_linkdefinition":["a:1:{i:0;s:13:\"blind flanges\";}"],"site-content-style":["unboxed"],"site-sidebar-style":["unboxed"],"theme-transparent-header-meta":["default"],"astra-migrate-meta-layouts":["set"],"_uag_page_assets":["a:9:{s:3:\"css\";s:263:\".uag-blocks-common-selector{z-index:var(--z-index-desktop) !important}@media (max-width: 976px){.uag-blocks-common-selector{z-index:var(--z-index-tablet) !important}}@media (max-width: 767px){.uag-blocks-common-selector{z-index:var(--z-index-mobile) !important}}\n\";s:2:\"js\";s:0:\"\";s:18:\"current_block_list\";a:8:{i:0;s:11:\"core\/search\";i:1;s:10:\"core\/group\";i:2;s:12:\"core\/heading\";i:3;s:17:\"core\/latest-posts\";i:4;s:20:\"core\/latest-comments\";i:5;s:13:\"core\/archives\";i:6;s:15:\"core\/categories\";i:7;s:10:\"core\/image\";}s:8:\"uag_flag\";b:0;s:11:\"uag_version\";s:10:\"1779372270\";s:6:\"gfonts\";a:0:{}s:10:\"gfonts_url\";s:0:\"\";s:12:\"gfonts_files\";a:0:{}s:14:\"uag_faq_layout\";b:0;}"],"_uag_css_file_name":["uag-css-3167.css"],"_elementor_page_assets":["a:1:{s:7:\"scripts\";a:1:{i:0;s:18:\"elementor-frontend\";}}"],"_elementor_css":["a:6:{s:4:\"time\";i:1779909659;s:5:\"fonts\";a:0:{}s:5:\"icons\";a:0:{}s:20:\"dynamic_elements_ids\";a:0:{}s:6:\"status\";s:4:\"file\";i:0;s:0:\"\";}"],"_elementor_element_cache":["{\"timeout\":1779999659,\"value\":{\"content\":\"<div class=\\\"elementor-element elementor-element-58f435c e-flex e-con-boxed e-con e-parent\\\" data-id=\\\"58f435c\\\" data-element_type=\\\"container\\\">\\n\\t\\t\\t\\t\\t<div class=\\\"e-con-inner\\\">\\n\\t\\t\\t\\t<div class=\\\"elementor-element elementor-element-94dc55e elementor-widget elementor-widget-html\\\" data-id=\\\"94dc55e\\\" data-element_type=\\\"widget\\\" data-widget_type=\\\"html.default\\\">\\n\\t\\t\\t\\t<div class=\\\"elementor-widget-container\\\">\\n\\t\\t\\t\\t\\t<link rel=\\\"stylesheet\\\" href=\\\"\\\/zicss\\\/nickel5.css\\\">\\n\\n<div class=\\\"form-page-wrapper\\\">\\n\\n    <div class=\\\"breadcrumbs\\\">\\n        <a href=\\\"\\\/\\\">Home<\\\/a> \\n        <span class=\\\"separator\\\">\\\/<\\\/span> \\n        <a href=\\\"\\\/product-forms\\\/\\\">Product Forms<\\\/a>\\n        <span class=\\\"separator\\\">\\\/<\\\/span> \\n        <a href=\\\"\\\/product-forms\\\/flanges\\\/\\\">Flanges<\\\/a>\\n        <span class=\\\"separator\\\">\\\/<\\\/span> \\n        Blind Flanges\\n    <\\\/div>\\n\\n    <div class=\\\"form-hero\\\">\\n        <h1>Nickel Alloy Blind Flanges<\\\/h1>\\n        \\n        <p>\\n            When you need to securely terminate a piping system, blank off a pressure vessel, or isolate a line for critical maintenance, Blind Flanges (BLRF \\\/ BLRTJ) are the ultimate safeguard. 28Nickel manufactures premium forged nickel alloy blind flanges engineered to withstand the most extreme internal pressures and highly corrosive stagnant media in chemical processing, offshore marine, and oil & gas environments.\\n        <\\\/p>\\n    <\\\/div>\\n\\n    <h2 class=\\\"section-title\\\">Available Alloy Grades for Blind Flanges<\\\/h2>\\n    <p>\\n        Because blind flanges lack a center bore, they absorb the highest bending stress of any flange type. Furthermore, dead-end lines often accumulate stagnant, corrosive fluids. Selecting a high-strength, pitting-resistant superalloy\\u2014such as Hastelloy C-276 or Inconel 718\\u2014is critical to preventing catastrophic failure.\\n    <\\\/p>\\n    \\n    <div class=\\\"available-grades-box\\\">\\n        <h3 style=\\\"margin-top:0; color: var(--primary-color); font-size: 1.2rem;\\\">Select a Grade to View Material Specs:<\\\/h3>\\n        <div class=\\\"grade-tags-container\\\">\\n            <a href=\\\"\\\/nickel-alloys\\\/inconel-nickel-alloys\\\/inconel-625\\\/\\\" class=\\\"grade-tag\\\">Inconel\\u00ae 625 (Excellent Pitting Resistance)<\\\/a>\\n            <a href=\\\"\\\/nickel-alloys\\\/inconel-nickel-alloys\\\/inconel-718\\\/\\\" class=\\\"grade-tag\\\">Inconel\\u00ae 718 (High Yield Strength\\\/Pressure)<\\\/a>\\n            \\n            <a href=\\\"\\\/nickel-alloys\\\/monel-metal-alloys\\\/monel-400\\\/\\\" class=\\\"grade-tag\\\">Monel\\u00ae 400 (HF Acid & Seawater)<\\\/a>\\n            <a href=\\\"\\\/nickel-alloys\\\/monel-metal-alloys\\\/monel-k500\\\/\\\" class=\\\"grade-tag\\\">Monel\\u00ae K-500 (Marine\\\/Sour Gas)<\\\/a>\\n            \\n            <a href=\\\"\\\/nickel-alloys\\\/hastelloy-alloys\\\/hastelloy-c276\\\/\\\" class=\\\"grade-tag\\\">Hastelloy\\u00ae C-276 (Severe Chemical Processing)<\\\/a>\\n            <a href=\\\"\\\/nickel-alloys\\\/waspaloy\\\/\\\" class=\\\"grade-tag\\\">Waspaloy\\u00ae (Extreme High Temp Exhausts)<\\\/a>\\n        <\\\/div>\\n    <\\\/div>\\n\\n    <h2 class=\\\"section-title\\\">Engineering Features & Variations<\\\/h2>\\n    <p style=\\\"margin-bottom: 25px;\\\">\\n        Beyond standard solid blanking flanges, we provide specialized blind configurations tailored for pipeline testing, instrumentation, and routine maintenance.\\n    <\\\/p>\\n    \\n    <div class=\\\"forms-grid\\\">\\n        \\n        <div class=\\\"form-card\\\">\\n            <div class=\\\"form-card-header\\\">\\n                <div class=\\\"form-icon\\\">\\ud83d\\uded1<\\\/div>\\n                <h3>Standard Blind Flanges<\\\/h3>\\n            <\\\/div>\\n            <p>Solid forged disks used to seal the ends of piping systems or pressure vessel openings. They are bolted against a mating flange (typically a weld neck or slip-on) to create a highly secure, pressure-tight seal.<\\\/p>\\n        <\\\/div>\\n\\n        <div class=\\\"form-card\\\">\\n            <div class=\\\"form-card-header\\\">\\n                <div class=\\\"form-icon\\\">\\ud83d\\udc53<\\\/div>\\n                <h3>Spectacle Blinds (Figure-8)<\\\/h3>\\n            <\\\/div>\\n            <p>A specialized safety device featuring a solid plate (to blind the line) and a ring plate (to allow flow) connected by a web. Used in systems requiring frequent, absolute isolation for maintenance.<\\\/p>\\n        <\\\/div>\\n\\n        <div class=\\\"form-card\\\">\\n            <div class=\\\"form-card-header\\\">\\n                <div class=\\\"form-icon\\\">\\ud83d\\udeb0<\\\/div>\\n                <h3>Tapped Blind Flanges<\\\/h3>\\n            <\\\/div>\\n            <p>Standard blind flanges that have been precision CNC-machined with a threaded center hole (NPT). These are essential for installing pressure gauges, bleed valves, or drainage lines at the end of a pipe run.<\\\/p>\\n        <\\\/div>\\n\\n        <div class=\\\"form-card\\\">\\n            <div class=\\\"form-card-header\\\">\\n                <div class=\\\"form-icon\\\">\\u2699\\ufe0f<\\\/div>\\n                <h3>Extreme Pressure Resistance<\\\/h3>\\n            <\\\/div>\\n            <p>Due to the lack of a center opening, blind flanges are structurally the strongest flange type. When forged from high-yield alloys like Inconel 718, they can easily manage severe hydrostatic pressure testing and continuous high-pressure service.<\\\/p>\\n        <\\\/div>\\n\\n    <\\\/div>\\n\\n    <div class=\\\"section-title\\\">Standard Specifications & Dimensions<\\\/div>\\n    <div class=\\\"data-table-wrap\\\">\\n        <table class=\\\"tech-table\\\">\\n            <thead>\\n                <tr>\\n                    <th width=\\\"30%\\\">Specification Category<\\\/th>\\n                    <th width=\\\"70%\\\">Details & Standards<\\\/th>\\n                <\\\/tr>\\n            <\\\/thead>\\n            <tbody>\\n                <tr>\\n                    <td><strong>Dimensional Standards<\\\/strong><\\\/td>\\n                    <td>ASME \\\/ ANSI B16.5 (Up to 24\\\"), ASME B16.47 Series A & B (Large Diameter > 24\\\")<\\\/td>\\n                <\\\/tr>\\n                <tr>\\n                    <td><strong>Pressure Classes<\\\/strong><\\\/td>\\n                    <td>150#, 300#, 600#, 900#, 1500#, 2500# (Custom high-pressure thicknesses available)<\\\/td>\\n                <\\\/tr>\\n                <tr>\\n                    <td><strong>Bore Size<\\\/strong><\\\/td>\\n                    <td>None (Solid disk). *Unless specified as a Tapped Blind Flange with NPT threading.<\\\/td>\\n                <\\\/tr>\\n                <tr>\\n                    <td><strong>Flange Facing<\\\/strong><\\\/td>\\n                    <td>Raised Face (BLRF), Flat Face (BLFF), Ring Type Joint (BLRTJ) for max sealing.<\\\/td>\\n                <\\\/tr>\\n                <tr>\\n                    <td><strong>Manufacturing Process<\\\/strong><\\\/td>\\n                    <td>Hot Forged and Precision CNC Machined. Never cast.<\\\/td>\\n                <\\\/tr>\\n            <\\\/tbody>\\n        <\\\/table>\\n    <\\\/div>\\n\\n    <div class=\\\"cta-block\\\">\\n        <h3>Need to Securely Blind a Line?<\\\/h3>\\n        <p>When requesting a quote, please specify the alloy grade (e.g., Hastelloy C-276), nominal pipe size (NPS), pressure class (e.g., 900#), and flange facing (e.g., RTJ). If you need a tapped blind, please provide the required NPT thread size.<\\\/p>\\n        <a href=\\\"\\\/contact\\\/\\\" class=\\\"quote-btn\\\">Get a Blind Flange Quote<\\\/a>\\n    <\\\/div>\\n\\n<\\\/div>\\t\\t\\t\\t<\\\/div>\\n\\t\\t\\t\\t<\\\/div>\\n\\t\\t\\t\\t\\t<\\\/div>\\n\\t\\t\\t\\t<\\\/div>\\n\\t\\t\",\"scripts\":[],\"styles\":[]}}"]},"uagb_featured_image_src":{"full":false,"thumbnail":false,"medium":false,"medium_large":false,"large":false,"1536x1536":false,"2048x2048":false,"trp-custom-language-flag":false},"uagb_author_info":{"display_name":"nickel","author_link":"https:\/\/www.nickelcasting.com\/de\/author\/nickel\/"},"uagb_comment_info":0,"uagb_excerpt":"Home \/ Product Forms \/ Flanges \/ Blind Flanges Nickel Alloy Blind Flanges When you need to securely terminate a piping system, blank off a pressure vessel, or isolate a line for critical maintenance, Blind Flanges (BLRF \/ BLRTJ) are the ultimate safeguard. 28Nickel manufactures premium forged nickel alloy blind flanges engineered to withstand the&hellip;","_links":{"self":[{"href":"https:\/\/www.nickelcasting.com\/de\/wp-json\/wp\/v2\/pages\/3167","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.nickelcasting.com\/de\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.nickelcasting.com\/de\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.nickelcasting.com\/de\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.nickelcasting.com\/de\/wp-json\/wp\/v2\/comments?post=3167"}],"version-history":[{"count":4,"href":"https:\/\/www.nickelcasting.com\/de\/wp-json\/wp\/v2\/pages\/3167\/revisions"}],"predecessor-version":[{"id":3173,"href":"https:\/\/www.nickelcasting.com\/de\/wp-json\/wp\/v2\/pages\/3167\/revisions\/3173"}],"up":[{"embeddable":true,"href":"https:\/\/www.nickelcasting.com\/de\/wp-json\/wp\/v2\/pages\/3145"}],"wp:attachment":[{"href":"https:\/\/www.nickelcasting.com\/de\/wp-json\/wp\/v2\/media?parent=3167"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}