{"id":1878,"date":"2025-12-23T12:11:34","date_gmt":"2025-12-23T11:11:34","guid":{"rendered":"https:\/\/www.efsfasteners.com\/?post_type=avada_portfolio&#038;p=1878"},"modified":"2025-12-30T13:53:27","modified_gmt":"2025-12-30T12:53:27","slug":"super-duplex-uns-s32760-bolts-for-high-pressure-valves","status":"publish","type":"avada_portfolio","link":"https:\/\/www.efsfasteners.com\/en\/portfolio-items\/super-duplex-uns-s32760-bolts-for-high-pressure-valves\/","title":{"rendered":"Super Duplex UNS S32760 Bolts for High-Pressure Valves"},"content":{"rendered":"<div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-1 fusion-flex-container nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-flex-wrap:wrap;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-flex-start fusion-flex-content-wrap\" style=\"max-width:1248px;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-0 fusion_builder_column_1_1 1_1 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:100%;--awb-margin-top-large:0px;--awb-spacing-right-large:1.92%;--awb-margin-bottom-large:0px;--awb-spacing-left-large:1.92%;--awb-width-medium:100%;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-text fusion-text-1\"><p>The <strong>Super Duplex UNS S32760 <\/strong>bolts supplied by EFS represent a proven technical solution for <strong>high-pressure valves.<\/strong> They are ideal for offshore industry where mechanical reliability and corrosion resistance are essential requirements. In the Oil &amp; Gas and energy sectors, the selection of Super Duplex bolts for high-pressure valves has a direct impact on operational safety and plant uptime.<\/p>\n<h2>Super Duplex UNS S32760: an alloy for critical applications<\/h2>\n<p><strong>Super Duplex UNS S32760<\/strong> is a high-alloy stainless steel featuring an optimised austenitic\u2013ferritic micro-structure, specifically designed for severe operating environments. Compared to standard Duplex grades, it offers:<\/p>\n<ul>\n<li>very high mechanical strength, ideal for heavy static and dynamic loads;<\/li>\n<li>excellent resistance to localised corrosion (pitting and crevice corrosion), particularly in chloride-rich environments;<\/li>\n<li>good stability in marine and chemically aggressive conditions.<\/li>\n<\/ul>\n<p>For these reasons, Super Duplex bolting for valves is widely used in <strong>offshore <\/strong>platforms, pumping systems, heat exchangers and equipment handling corrosive fluids.<\/p>\n<h2>Super Duplex bolts for high-pressure valves: EFS supply<\/h2>\n<p>The supply consists of DIN 931 bolts in Super Duplex UNS S32760, with <strong>diameters ranging from M8 to M20<\/strong> and various lengths, complete with nuts and washers compliant with applicable standards. These Super Duplex bolts are intended for valves operating under high pressure and continuous duty cycles.<\/p>\n<p>In applications of this kind, selecting a high-performance material alone is not enough. Ensuring dimensional control, production repeatability and fully documented quality throughout the entire supply chain is essential.<\/p>\n<h2>Laser marking and traceability of Super Duplex fasteners<\/h2>\n<p>The bolts are identified by <strong>laser marking<\/strong>, a technology particularly suitable for Super Duplex Oil &amp; Gas fasteners, as it provides permanent identification without altering the component geometry. Markings remain legible even after long service periods.<\/p>\n<p>Each batch is supplied with a <strong>UNI EN 10204 3.1<\/strong> inspection certificate, confirming the chemical and mechanical properties of the material. The raw material is of European origin Full traceability is therefore a key requirement for Super Duplex UNS S32760 bolts used in valves and other critical components in the energy sector.<\/p>\n<h2><span lang=\"EN-US\">Duplex vs Super Duplex: technical comparison<\/span><\/h2>\n<p><img decoding=\"async\" class=\"alignnone size-medium wp-image-1870\" src=\"https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2025\/12\/efs-duplex-vs-superduplex-it-300x225.jpg\" alt=\"Duplex vs Super Duplex: table of comparison\" width=\"300\" height=\"225\" srcset=\"https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2025\/12\/efs-duplex-vs-superduplex-it-200x150.jpg 200w, https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2025\/12\/efs-duplex-vs-superduplex-it-300x225.jpg 300w, https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2025\/12\/efs-duplex-vs-superduplex-it-400x300.jpg 400w, https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2025\/12\/efs-duplex-vs-superduplex-it-600x449.jpg 600w, https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2025\/12\/efs-duplex-vs-superduplex-it.jpg 645w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p>\n<p>In summary, Duplex is suitable for demanding but non-extreme operating conditions. Super Duplex, on the other hand, is preferred when pressure levels, fluid chemistry and service life require a higher safety margin.<\/p>\n<h2>Fastener reliability for high-pressure valves<\/h2>\n<p>In high-pressure valves, the quality of Super Duplex bolts is not limited to the material grade alone, but involves the entire process:<\/p>\n<ul>\n<li>alloy selection<\/li>\n<li>controlled machining<\/li>\n<li>appropriate marking<\/li>\n<li>certification and technical documentation.<\/li>\n<\/ul>\n<p>It is this integrated approach that enables EFS to reliably support complex projects in the <strong>Oil &amp; Gas and energy sectors<\/strong><\/p>\n<p>Discover the full range of <a href=\"https:\/\/www.efsfasteners.com\/en\/products\/\">EFS special fasteners<\/a>.<\/p>\n<\/div><\/div><\/div><\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>The Super Duplex UNS S32760 bolts supplied by EFS represent a proven technical solution for high-pressure valves. They are ideal for offshore industry where mechanical reliability and corrosion resistance are essential requirements.<\/p>\n","protected":false},"author":1,"featured_media":1874,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","format":"standard","meta":{"footnotes":""},"portfolio_category":[26,29],"portfolio_skills":[],"portfolio_tags":[],"class_list":["post-1878","avada_portfolio","type-avada_portfolio","status-publish","format-standard","has-post-thumbnail","hentry","portfolio_category-energy","portfolio_category-oil-gas"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Super Duplex bolts for high-pressure valves | EFS - EFS Srl European Fasteners Solutions<\/title>\n<meta name=\"description\" content=\"EFS: Super Duplex UNS S32760 bolts for high-pressure valves. 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