{"id":1625,"date":"2026-04-15T02:39:22","date_gmt":"2026-04-15T09:39:22","guid":{"rendered":"https:\/\/www.songhaiflanges.com\/?p=1625"},"modified":"2026-04-15T02:49:39","modified_gmt":"2026-04-15T09:49:39","slug":"pipe-fitting-standards-explained-asme-din-jis-gb-comparison","status":"publish","type":"post","link":"https:\/\/www.songhaiflanges.com\/pt\/pipe-fitting-standards-explained-asme-din-jis-gb-comparison\/","title":{"rendered":"Pipe Fitting Standards Explained: ASME, DIN, JIS, GB Comparison"},"content":{"rendered":"<h2>Understanding Pipe Fitting Standards<\/h2>\n<p>Global piping projects require understanding multiple fitting standards. ASME (American), DIN\/EN (European), JIS (Japanese), and GB (Chinese) standards each have unique specifications for dimensions, pressure ratings, and materials.<\/p>\n<p>Songhai Flange manufactures fittings to all major international standards. This guide helps you navigate the differences and ensure proper specification for your projects.<\/p>\n<h2>ASME Standards (American)<\/h2>\n<h3>ASME B16.5 &#8211; Pipe Flanges and Flanged Fittings<\/h3>\n<p>The primary North American flange standard.<\/p>\n<ul>\n<li>Size range: 1\/2&#8243; to 24&#8243; NPS<\/li>\n<li>Pressure classes: 150, 300, 400, 600, 900, 1500, 2500<\/li>\n<li>Temperature ratings vary by material<\/li>\n<\/ul>\n<h3>ASME B16.9 &#8211; Factory-Made Wrought Butt Weld Fittings<\/h3>\n<p>Covers elbows, tees, reducers, caps, and stub ends.<\/p>\n<ul>\n<li>Size range: 1\/2&#8243; to 48&#8243; NPS<\/li>\n<li>Wall thickness: SCH 10S through XXS<\/li>\n<\/ul>\n<h3>ASME B16.11 &#8211; Forged Fittings<\/h3>\n<p>Socket weld and threaded fittings.<\/p>\n<ul>\n<li>Size range: 1\/8&#8243; to 4&#8243;<\/li>\n<li>Pressure classes: 2000, 3000, 6000, 9000 PSI<\/li>\n<\/ul>\n<h2>DIN\/EN Standards (European)<\/h2>\n<h3>DIN 2501 \/ EN 1092-1 &#8211; Flanges<\/h3>\n<p>European flange standard replacing older DIN standards.<\/p>\n<ul>\n<li>Size range: DN 10 to DN 4000<\/li>\n<li>Pressure ratings: PN 2.5, 6, 10, 16, 25, 40, 63, 100<\/li>\n<\/ul>\n<h2>JIS Standards (Japanese)<\/h2>\n<h3>JIS B2220 &#8211; Steel Pipe Flanges<\/h3>\n<p>Japanese flange standard widely used in Asia.<\/p>\n<ul>\n<li>Size range: 10A to 1500A (roughly 3\/8&#8243; to 60&#8243;)<\/li>\n<li>Pressure ratings: 5K, 10K, 16K, 20K, 30K, 40K, 63K<\/li>\n<\/ul>\n<p><strong>JIS K Rating Equivalent:<\/strong><\/p>\n<ul>\n<li>5K \u2248 150#<\/li>\n<li>10K \u2248 150#-300#<\/li>\n<li>16K \u2248 300#<\/li>\n<li>20K \u2248 400#<\/li>\n<li>30K \u2248 600#<\/li>\n<\/ul>\n<h2>GB Standards (Chinese)<\/h2>\n<h3>GB\/T 9112-9124 &#8211; Steel Pipe Flanges<\/h3>\n<p>Chinese national flange standards.<\/p>\n<ul>\n<li>Size range: DN 10 to DN 4000<\/li>\n<li>Pressure ratings: PN 2.5, 6, 10, 16, 25, 40, 63, 100, 160<\/li>\n<\/ul>\n<h2>Standard Comparison Table<\/h2>\n<table>\n<tr>\n<th>Parameter<\/th>\n<th>ASME<\/th>\n<th>DIN\/EN<\/th>\n<th>JIS<\/th>\n<th>GB<\/th>\n<\/tr>\n<tr>\n<td>Size Designation<\/td>\n<td>NPS (inches)<\/td>\n<td>DN (mm)<\/td>\n<td>A (mm)<\/td>\n<td>DN (mm)<\/td>\n<\/tr>\n<tr>\n<td>Pressure Rating<\/td>\n<td>Class (150-2500)<\/td>\n<td>PN (2.5-160)<\/td>\n<td>K (5K-63K)<\/td>\n<td>PN\/Class<\/td>\n<\/tr>\n<tr>\n<td>Flange Faces<\/td>\n<td>RF, FF, RTJ<\/td>\n<td>RF, FF, RTJ<\/td>\n<td>RF, FF, RTJ<\/td>\n<td>RF, FF, RTJ<\/td>\n<\/tr>\n<\/table>\n<h2>Pressure Class Equivalents (Approximate)<\/h2>\n<table>\n<tr>\n<th>ASME Class<\/th>\n<th>DIN\/EN PN<\/th>\n<th>JIS K<\/th>\n<th>GB PN<\/th>\n<\/tr>\n<tr>\n<td>150<\/td>\n<td>PN20<\/td>\n<td>10K<\/td>\n<td>PN20<\/td>\n<\/tr>\n<tr>\n<td>300<\/td>\n<td>PN50<\/td>\n<td>16K\/20K<\/td>\n<td>PN50<\/td>\n<\/tr>\n<tr>\n<td>600<\/td>\n<td>PN110<\/td>\n<td>30K<\/td>\n<td>PN110<\/td>\n<\/tr>\n<tr>\n<td>900<\/td>\n<td>PN150<\/td>\n<td>40K<\/td>\n<td>PN150<\/td>\n<\/tr>\n<tr>\n<td>1500<\/td>\n<td>PN260<\/td>\n<td>63K<\/td>\n<td>PN260<\/td>\n<\/tr>\n<\/table>\n<h2>Material Specification Equivalents<\/h2>\n<h3>Carbon Steel<\/h3>\n<ul>\n<li><strong>ASME:<\/strong> A105, A216 WCB, A234 WPB<\/li>\n<li><strong>DIN:<\/strong> P235GH, P265GH, 1.0460<\/li>\n<li><strong>JIS:<\/strong> SFVC2A, SFVC2B<\/li>\n<li><strong>GB:<\/strong> 20#, Q235, 16Mn<\/li>\n<\/ul>\n<h3>Stainless Steel 304<\/h3>\n<ul>\n<li><strong>ASME:<\/strong> A182 F304\/F304L<\/li>\n<li><strong>DIN:<\/strong> 1.4301 \/ 1.4307 (X5CrNi18-10)<\/li>\n<li><strong>JIS:<\/strong> SUS304 \/ SUS304L<\/li>\n<li><strong>GB:<\/strong> 06Cr19Ni10 \/ 022Cr19Ni10<\/li>\n<\/ul>\n<h3>Stainless Steel 316<\/h3>\n<ul>\n<li><strong>ASME:<\/strong> A182 F316\/F316L<\/li>\n<li><strong>DIN:<\/strong> 1.4401 \/ 1.4404 (X5CrNiMo17-12-2)<\/li>\n<li><strong>JIS:<\/strong> SUS316 \/ SUS316L<\/li>\n<li><strong>GB:<\/strong> 06Cr17Ni12Mo2 \/ 022Cr17Ni12Mo2<\/li>\n<\/ul>\n<h2>Conclusion<\/h2>\n<p>Understanding pipe fitting standards is essential for global projects. While ASME, DIN, JIS, and GB have differences, proper cross-referencing ensures compatible, safe piping systems.<\/p>\n<p>Songhai Flange manufactures fittings to all major international standards with full certification and traceability. Our engineering team can help you navigate standard requirements for your specific project.<\/p>\n<p><strong>WhatsApp:<\/strong>\u00a0+86-18658777855<br \/>\n<strong>Email:<\/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-1480\" src=\"http:\/\/www.songhaiflanges.com\/wp-content\/uploads\/2026\/04\/4-1.webp\" alt=\"\" width=\"1290\" height=\"2317\" srcset=\"https:\/\/www.songhaiflanges.com\/wp-content\/uploads\/2026\/04\/4-1.webp 1290w, https:\/\/www.songhaiflanges.com\/wp-content\/uploads\/2026\/04\/4-1-167x300.webp 167w, https:\/\/www.songhaiflanges.com\/wp-content\/uploads\/2026\/04\/4-1-570x1024.webp 570w, https:\/\/www.songhaiflanges.com\/wp-content\/uploads\/2026\/04\/4-1-768x1379.webp 768w, https:\/\/www.songhaiflanges.com\/wp-content\/uploads\/2026\/04\/4-1-855x1536.webp 855w, https:\/\/www.songhaiflanges.com\/wp-content\/uploads\/2026\/04\/4-1-1140x2048.webp 1140w, https:\/\/www.songhaiflanges.com\/wp-content\/uploads\/2026\/04\/4-1-7x12.webp 7w\" sizes=\"auto, (max-width: 1290px) 100vw, 1290px\" \/><\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Comprehensive comparison of ASME, DIN, JIS, and GB pipe fitting standards with cross-reference tables and specification guidance.<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_kadence_starter_templates_imported_post":false,"_kad_post_transparent":"default","_kad_post_title":"default","_kad_post_layout":"default","_kad_post_sidebar_id":"","_kad_post_content_style":"default","_kad_post_vertical_padding":"default","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"footnotes":""},"categories":[240],"tags":[122,235,238,237,239,236,234],"class_list":["post-1625","post","type-post","status-publish","format-standard","hentry","category-standards-guide","tag-asme-b16-5","tag-din-flanges","tag-flange-standards","tag-gb-t-standards","tag-international-standards","tag-jis-b2220","tag-pipe-fitting-standards"],"_links":{"self":[{"href":"https:\/\/www.songhaiflanges.com\/pt\/wp-json\/wp\/v2\/posts\/1625","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.songhaiflanges.com\/pt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.songhaiflanges.com\/pt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.songhaiflanges.com\/pt\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.songhaiflanges.com\/pt\/wp-json\/wp\/v2\/comments?post=1625"}],"version-history":[{"count":2,"href":"https:\/\/www.songhaiflanges.com\/pt\/wp-json\/wp\/v2\/posts\/1625\/revisions"}],"predecessor-version":[{"id":1640,"href":"https:\/\/www.songhaiflanges.com\/pt\/wp-json\/wp\/v2\/posts\/1625\/revisions\/1640"}],"wp:attachment":[{"href":"https:\/\/www.songhaiflanges.com\/pt\/wp-json\/wp\/v2\/media?parent=1625"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.songhaiflanges.com\/pt\/wp-json\/wp\/v2\/categories?post=1625"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.songhaiflanges.com\/pt\/wp-json\/wp\/v2\/tags?post=1625"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}