{"id":978,"date":"2026-04-12T23:09:02","date_gmt":"2026-04-13T03:09:02","guid":{"rendered":"https:\/\/www.songhaiflange.com\/?p=978"},"modified":"2026-04-12T23:19:59","modified_gmt":"2026-04-13T03:19:59","slug":"ped-vs-asme-vs-api-which-flange-standard-is-strictest","status":"publish","type":"post","link":"https:\/\/www.songhaiflange.com\/ru\/2026\/04\/12\/ped-vs-asme-vs-api-which-flange-standard-is-strictest\/","title":{"rendered":"PED vs ASME vs API Which Flange Standard Is Strictest"},"content":{"rendered":"<h2>Understanding Flange Standards Comparison<\/h2>\n<p>Between ASME, API, ISO, and PED, which standard is strictest? The answer depends on what you measure.<\/p>\n<h2>PED: Europe Legal Mandate<\/h2>\n<p>The Pressure Equipment Directive (2014\/68\/EU) is an EU legislative directive for pressure equipment over 0.5 bar. Unlike voluntary ASME\/API standards, PED is a <strong>regulatory mandate<\/strong> requiring CE marking for EU market access.<\/p>\n<h3>PED Risk Categories (I-IV)<\/h3>\n<p>Classification based on fluid type, pressure, and volume. Category III and IV require Notified Body involvement.<\/p>\n<h2>ASME: Technical Heavyweight<\/h2>\n<p>ASME B16.5, B16.47, B31.3 set detailed requirements for pressure design calculations, material traceability, NDE and hydrostatic testing.<\/p>\n<h2>API: Industry-Specific<\/h2>\n<ul>\n<li>API 605: Large-diameter flanges<\/li>\n<li>API 6A: Wellhead equipment<\/li>\n<li>API 624: Fugitive emissions<\/li>\n<li>NACE MR0175: Sour service<\/li>\n<\/ul>\n<h2>Comparison Table<\/h2>\n<table border=\"1\" cellpadding=\"8\">\n<tr>\n<th>Standard<\/th>\n<th>Type<\/th>\n<th>Enforcement<\/th>\n<th>Best For<\/th>\n<\/tr>\n<tr>\n<td>PED<\/td>\n<td>Regulatory<\/td>\n<td>EU Legal Mandate<\/td>\n<td>EU Market Access<\/td>\n<\/tr>\n<tr>\n<td>ASME<\/td>\n<td>Technical Code<\/td>\n<td>Adopted by Regulation<\/td>\n<td>Pressure Design<\/td>\n<\/tr>\n<tr>\n<td>API<\/td>\n<td>Industry Standard<\/td>\n<td>Contractual<\/td>\n<td>Oil and Gas<\/td>\n<\/tr>\n<tr>\n<td>ISO<\/td>\n<td>International<\/td>\n<td>Contractual<\/td>\n<td>Global Projects<\/td>\n<\/tr>\n<\/table>\n<h2>Bottom Line<\/h2>\n<ul>\n<li><strong>ASME:<\/strong> Most technically rigorous for pressure integrity<\/li>\n<li><strong>API:<\/strong> Most demanding for high-risk oil\/gas applications<\/li>\n<li><strong>PED:<\/strong> Only standard with force of law and mandatory third-party oversight<\/li>\n<\/ul>\n<p><strong>Songhai Flange<\/strong> manufactures to ASME, API, and PED standards with full certification.<\/p>\n<p><strong>WhatsApp:<\/strong>\u00a0+86-18658777855<br \/>\n<strong>\u042d\u043b\u0435\u043a\u0442\u0440\u043e\u043d\u043d\u0430\u044f \u043f\u043e\u0447\u0442\u0430:<\/strong>\u00a01007788887@qq.com<br \/>\n<a href=\"https:\/\/www.720yun.com\/vr\/a6ajt7ynrw0\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-884\" src=\"http:\/\/www.songhaiflange.com\/wp-content\/uploads\/2026\/04\/4.webp\" alt=\"\" width=\"1290\" height=\"2317\" srcset=\"https:\/\/www.songhaiflange.com\/wp-content\/uploads\/2026\/04\/4.webp 1290w, https:\/\/www.songhaiflange.com\/wp-content\/uploads\/2026\/04\/4-167x300.webp 167w, https:\/\/www.songhaiflange.com\/wp-content\/uploads\/2026\/04\/4-570x1024.webp 570w, https:\/\/www.songhaiflange.com\/wp-content\/uploads\/2026\/04\/4-768x1379.webp 768w, https:\/\/www.songhaiflange.com\/wp-content\/uploads\/2026\/04\/4-855x1536.webp 855w, https:\/\/www.songhaiflange.com\/wp-content\/uploads\/2026\/04\/4-1140x2048.webp 1140w, https:\/\/www.songhaiflange.com\/wp-content\/uploads\/2026\/04\/4-7x12.webp 7w, https:\/\/www.songhaiflange.com\/wp-content\/uploads\/2026\/04\/4-416x747.webp 416w\" sizes=\"auto, (max-width: 1290px) 100vw, 1290px\" \/><\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Understanding Flange Standards Comparison Between ASME, API, ISO, and PED, which standard is strictest? The answer depends on what you measure. PED: Europe Legal Mandate The Pressure Equipment Directive (2014\/68\/EU) is an EU legislative directive for pressure equipment over 0.5 bar. Unlike voluntary ASME\/API standards, PED is a regulatory mandate requiring CE marking for EU [&hellip;]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-978","post","type-post","status-publish","format-standard","hentry","category-blog"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.songhaiflange.com\/ru\/wp-json\/wp\/v2\/posts\/978","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.songhaiflange.com\/ru\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.songhaiflange.com\/ru\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.songhaiflange.com\/ru\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.songhaiflange.com\/ru\/wp-json\/wp\/v2\/comments?post=978"}],"version-history":[{"count":2,"href":"https:\/\/www.songhaiflange.com\/ru\/wp-json\/wp\/v2\/posts\/978\/revisions"}],"predecessor-version":[{"id":987,"href":"https:\/\/www.songhaiflange.com\/ru\/wp-json\/wp\/v2\/posts\/978\/revisions\/987"}],"wp:attachment":[{"href":"https:\/\/www.songhaiflange.com\/ru\/wp-json\/wp\/v2\/media?parent=978"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.songhaiflange.com\/ru\/wp-json\/wp\/v2\/categories?post=978"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.songhaiflange.com\/ru\/wp-json\/wp\/v2\/tags?post=978"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}