{"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\/pa\/2026\/04\/12\/ped-vs-asme-vs-api-which-flange-standard-is-strictest\/","title":{"rendered":"PED, ASME \u0a05\u0a24\u0a47 API: \u0a15\u0a3f\u0a39\u0a5c\u0a3e \u0a2b\u0a32\u0a48\u0a02\u0a1c \u0a2e\u0a3f\u0a06\u0a30 \u0a38\u0a2d \u0a24\u0a4b\u0a02 \u0a38\u0a16\u0a3c\u0a24 \u0a39\u0a48?"},"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>\u0a0f\u0a10\u0a38\u0a10\u0a2e\u0a08<\/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>\u0a35\u0a1f\u0a38\u0a10\u0a2a:<\/strong>\u00a0+86-18658777855<br \/>\n<strong>\u0a08\u0a2e\u0a47\u0a32:<\/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>\u0a2b\u0a32\u0a48\u0a02\u0a1c \u0a2e\u0a3f\u0a06\u0a30\u0a3e\u0a02 \u0a26\u0a40 \u0a24\u0a41\u0a32\u0a28\u0a3e: ASME, API, ISO \u0a05\u0a24\u0a47 PED \u0a35\u0a3f\u0a71\u0a1a\u0a4b\u0a02 \u0a38\u0a2d \u0a24\u0a4b\u0a02 \u0a38\u0a16\u0a24 \u0a2e\u0a3f\u0a06\u0a30 \u0a15\u0a3f\u0a39\u0a5c\u0a3e \u0a39\u0a48? \u0a1c\u0a35\u0a3e\u0a2c \u0a07\u0a38 \u0a17\u0a71\u0a32 '\u0a24\u0a47 \u0a28\u0a3f\u0a30\u0a2d\u0a30 \u0a15\u0a30\u0a26\u0a3e \u0a39\u0a48 \u0a15\u0a3f \u0a24\u0a41\u0a38\u0a40\u0a02 \u0a15\u0a40 \u0a2e\u0a3e\u0a2a\u0a26\u0a47 \u0a39\u0a4b\u0964   PED: \u0a2f\u0a42\u0a30\u0a2a\u0a40 \u0a15\u0a3e\u0a28\u0a42\u0a70\u0a28\u0a40 \u0a39\u0a41\u0a15\u0a2e   \u0a2a\u0a4d\u0a30\u0a48\u0a38\u0a3c\u0a30 \u0a07\u0a15\u0a41\u0a07\u0a2a\u0a2e\u0a48\u0a02\u0a1f \u0a21\u0a3e\u0a07\u0a30\u0a48\u0a15\u0a1f\u0a3f\u0a35 (2014\/68\/EU) 0.5 \u0a2c\u0a3e\u0a30 \u0a24\u0a4b\u0a02 \u0a35\u0a71\u0a27 \u0a26\u0a2c\u0a3e\u0a05 \u0a35\u0a3e\u0a32\u0a47 \u0a09\u0a2a\u0a15\u0a30\u0a28\u0a3e\u0a02 \u0a32\u0a08 \u0a07\u0a71\u0a15 \u0a2f\u0a42\u0a30\u0a2a\u0a40 \u0a38\u0a70\u0a18 \u0a26\u0a3e \u0a15\u0a3e\u0a28\u0a42\u0a70\u0a28\u0a40 \u0a28\u0a3f\u0a30\u0a26\u0a47\u0a38\u0a3c \u0a39\u0a48\u0964   \u0a07\u0a1b\u0a3e\u0a27\u0a3e\u0a30\u0a40 ASME\/API \u0a2e\u0a3f\u0a06\u0a30\u0a3e\u0a02 \u0a26\u0a47 \u0a09\u0a32\u0a1f, PED \u0a07\u0a71\u0a15 \u0a28\u0a3f\u0a2f\u0a70\u0a24\u0a30\u0a15 \u0a39\u0a41\u0a15\u0a2e \u0a39\u0a48 \u0a1c\u0a4b EU \u0a32\u0a08 CE \u0a2e\u0a3e\u0a30\u0a15\u0a3f\u0a70\u0a17 \u0a32\u0a3e\u0a1c\u0a3c\u0a2e\u0a40 \u0a15\u0a30\u0a26\u0a3e \u0a39\u0a48\u0964<\/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\/pa\/wp-json\/wp\/v2\/posts\/978","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.songhaiflange.com\/pa\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.songhaiflange.com\/pa\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.songhaiflange.com\/pa\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.songhaiflange.com\/pa\/wp-json\/wp\/v2\/comments?post=978"}],"version-history":[{"count":2,"href":"https:\/\/www.songhaiflange.com\/pa\/wp-json\/wp\/v2\/posts\/978\/revisions"}],"predecessor-version":[{"id":987,"href":"https:\/\/www.songhaiflange.com\/pa\/wp-json\/wp\/v2\/posts\/978\/revisions\/987"}],"wp:attachment":[{"href":"https:\/\/www.songhaiflange.com\/pa\/wp-json\/wp\/v2\/media?parent=978"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.songhaiflange.com\/pa\/wp-json\/wp\/v2\/categories?post=978"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.songhaiflange.com\/pa\/wp-json\/wp\/v2\/tags?post=978"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}