{"id":4214,"date":"2026-03-26T08:29:28","date_gmt":"2026-03-26T08:29:28","guid":{"rendered":"https:\/\/leffer.de\/en\/business-areas\/competence\/"},"modified":"2026-03-26T09:21:07","modified_gmt":"2026-03-26T09:21:07","slug":"certifications-2","status":"publish","type":"divisions","link":"https:\/\/leffer.de\/en\/business-areas\/competence\/certifications-2\/","title":{"rendered":"Certifications"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">Highest standards \u2013 certified and award-winning<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">At LEFFER, quality is not just a promise, but a standard we live by. Our quality management system is recertified according to <strong>DIN EN ISO 9001:2015<\/strong> and also meets the strict requirements of the <strong>ASME Code (U and U2)<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A comprehensive <strong>quality management manual<\/strong> and detailed quality assurance and work instructions ensure that all processes are continuously monitored, documented, and improved. We have received multiple awards from our customers for the quality of our products \u2013 proof of the reliability and precision of our work.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Our certifications at a glance<\/h2>\n\n\n\n<h4 class=\"wp-block-heading\">Quality and management systems<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong><a href=\"https:\/\/leffer.de\/en\/our-competencies\/certifications\/iso-90012015\/\">ISO 9001:2015<\/a><\/strong> \u2013 Quality management<\/li>\n\n\n\n<li><strong><a href=\"https:\/\/leffer.de\/en\/our-competencies\/certifications\/iso-450012018-scc\/\">ISO 45001:2018 &amp; SCC<\/a><\/strong> \u2013 Occupational health and safety management<\/li>\n\n\n\n<li><strong><a href=\"https:\/\/leffer.de\/en\/our-competencies\/certifications\/iso-500012018\/\">ISO 50001:2018<\/a><\/strong> \u2013 Energy management system<\/li>\n\n\n\n<li><strong>ISO 17025<\/strong> \u2013 Testing laboratory competence and calibration capability<\/li>\n\n\n\n<li><strong><a href=\"https:\/\/leffer.de\/en\/our-competencies\/certifications\/achilles\/\">ACHILLES <\/a><\/strong>\u2013 Certification of Membership<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">Welding technology, pressure equipment and piping<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong><a href=\"https:\/\/leffer.de\/en\/our-competencies\/certifications\/en-iso-3834-2\/\">EN ISO 3834-2<\/a><\/strong> \u2013 Welding quality requirements<\/li>\n\n\n\n<li><strong><a href=\"https:\/\/leffer.de\/en\/our-competencies\/certifications\/2014-68-eu-ped-module-h-h1\/\">2014\/68\/EU (PED) Module H\/H1<\/a><\/strong> \u2013 Pressure Equipment Directive<\/li>\n\n\n\n<li><strong><a href=\"https:\/\/leffer.de\/en\/our-competencies\/certifications\/asme-code-stamp-u-u2\/\">ASME Code Stamp U &amp; U2<\/a><\/strong> \u2013 Certification according to ASME Code<\/li>\n\n\n\n<li><strong><a href=\"https:\/\/leffer.de\/en\/our-competencies\/certifications\/ad-2000-hp0-hp100r\/\">AD 2000 HP0 \/ HP100R<\/a><\/strong> \u2013 Manufacture of pressure equipment<\/li>\n\n\n\n<li><strong><a href=\"https:\/\/leffer.de\/en\/our-competencies\/certifications\/din-en-13480\/\">DIN EN 13480<\/a><\/strong> \u2013 Metal piping<\/li>\n\n\n\n<li><strong>DIN 2303 \/ Q2 BK1<\/strong> \u2013 Welding of military products<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">Steel and plant engineering<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong><a href=\"https:\/\/leffer.de\/en\/our-competencies\/certifications\/en-1090-1-wpk-en-1090-2-exc1-exc4\/\">EN 1090-1 WPK \/ EN 1090-2 EXC1\u2013EXC4<\/a><\/strong> \u2013 Construction of steel and aluminum structures<\/li>\n\n\n\n<li><strong><a href=\"https:\/\/leffer.de\/en\/our-competencies\/certifications\/dnv-welding-workshop-approval-certificate\/\">DNV <\/a><\/strong> \u2013 Welding Workshop Approval Certificate<\/li>\n\n\n\n<li><a href=\"https:\/\/leffer.de\/en\/our-competencies\/certifications\/whg\/\"><strong>WHG<\/strong> <\/a>\u2013 Manufacture of water-polluting facilities in accordance with the Water Resources Act<\/li>\n<\/ul>\n\n\n<h3>ACHILLES \u2013 Certification of Membership<\/h3><h3>WHG Certified Contractor<\/h3><h3>ISO 50001:2018<\/h3><h3>DIN EN 1090-2:2018 EXC4<\/h3><h3>DIN EN 1090-1 WPK<\/h3><h3>DIN ISO 9001:2015<\/h3><h3>DIN EN ISO 3834-2<\/h3><h3>2014\/68\/EU (PED) Module H\/H1<\/h3><h3>ASME U2<\/h3>","protected":false},"excerpt":{"rendered":"<p>Highest standards \u2013 certified and award-winning At LEFFER, quality is not just a promise, but a standard we live by. Our quality management system is recertified according to DIN EN ISO 9001:2015 and also meets the strict requirements of the ASME Code (U and U2). A comprehensive quality management manual and detailed quality assurance and [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":0,"parent":2531,"menu_order":0,"template":"","meta":{"_acf_changed":false,"featuredimage_focalpoint":[],"footnotes":""},"divisions-category":[111],"class_list":["post-4214","divisions","type-divisions","status-publish","hentry","divisions-category-kompetenzen-en"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Certifications - Leffer - Stahl- und Apparatebau<\/title>\n<meta name=\"robots\" content=\"noindex, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Certifications - Leffer - Stahl- und Apparatebau\" \/>\n<meta property=\"og:description\" content=\"Highest standards \u2013 certified and award-winning At LEFFER, quality is not just a promise, but a standard we live by. Our quality management system is recertified according to DIN EN ISO 9001:2015 and also meets the strict requirements of the ASME Code (U and U2). A comprehensive quality management manual and detailed quality assurance and [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/leffer.de\/en\/business-areas\/competence\/certifications-2\/\" \/>\n<meta property=\"og:site_name\" content=\"Leffer - Stahl- und Apparatebau\" \/>\n<meta property=\"article:modified_time\" content=\"2026-03-26T09:21:07+00:00\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/leffer.de\/en\/business-areas\/competence\/certifications-2\/\",\"url\":\"https:\/\/leffer.de\/en\/business-areas\/competence\/certifications-2\/\",\"name\":\"Certifications - Leffer - Stahl- und Apparatebau\",\"isPartOf\":{\"@id\":\"https:\/\/leffer.de\/#website\"},\"datePublished\":\"2026-03-26T08:29:28+00:00\",\"dateModified\":\"2026-03-26T09:21:07+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/leffer.de\/en\/business-areas\/competence\/certifications-2\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/leffer.de\/en\/business-areas\/competence\/certifications-2\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/leffer.de\/en\/business-areas\/competence\/certifications-2\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Startseite\",\"item\":\"https:\/\/leffer.de\/en\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Competence\",\"item\":\"https:\/\/leffer.de\/en\/business-areas\/competence\/competence\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Certifications\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/leffer.de\/#website\",\"url\":\"https:\/\/leffer.de\/\",\"name\":\"Leffer - Stahl- und Apparatebau\",\"description\":\"Stahl- und Apparatebau\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/leffer.de\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Certifications - Leffer - Stahl- und Apparatebau","robots":{"index":"noindex","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"og_locale":"en_US","og_type":"article","og_title":"Certifications - Leffer - Stahl- und Apparatebau","og_description":"Highest standards \u2013 certified and award-winning At LEFFER, quality is not just a promise, but a standard we live by. 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