{"id":863,"date":"2026-04-09T12:36:34","date_gmt":"2026-04-09T04:36:34","guid":{"rendered":""},"modified":"2026-04-10T00:17:09","modified_gmt":"2026-04-10T04:17:09","slug":"large-diameter-flanges-custom-manufacturing","status":"publish","type":"post","link":"https:\/\/www.songhaiflange.com\/pa\/2026\/04\/09\/large-diameter-flanges-custom-manufacturing\/","title":{"rendered":"\u0a35\u0a71\u0a21\u0a47 \u0a35\u0a3f\u0a06\u0a38 \u0a35\u0a3e\u0a32\u0a47 \u0a2b\u0a32\u0a48\u0a02\u0a1c: \u0a15\u0a38\u0a1f\u0a2e \u0a28\u0a3f\u0a30\u0a2e\u0a3e\u0a23 \u0a38\u0a2e\u0a30\u0a71\u0a25\u0a3e\u0a35\u0a3e\u0a02"},"content":{"rendered":"<figure class=\"flange-image\"><img decoding=\"async\" style=\"max-width: 100%; height: auto; margin: 20px 0; border: 1px solid #ddd; border-radius: 8px; box-shadow: 0 2px 8px rgba(0,0,0,0.1);\" src=\"\/wp-content\/uploads\/flange-images\/large-flange.svg\" alt=\"Large Diameter Flange\" title=\"\"><\/figure>\n<h1>\u0a35\u0a71\u0a21\u0a47 \u0a35\u0a3f\u0a06\u0a38 \u0a35\u0a3e\u0a32\u0a47 \u0a2b\u0a32\u0a48\u0a02\u0a1c: \u0a15\u0a38\u0a1f\u0a2e \u0a28\u0a3f\u0a30\u0a2e\u0a3e\u0a23 \u0a38\u0a2e\u0a30\u0a71\u0a25\u0a3e\u0a35\u0a3e\u0a02<\/h1>\n<p><strong>Large diameter flanges<\/strong> (above 24&#8243;\/DN600) require specialized manufacturing capabilities. SongHai produces custom flanges up to 4 meters for heavy-duty industrial applications.<\/p>\n<h2>What Defines a Large Flange?<\/h2>\n<ul>\n<li><strong>Standard Range:<\/strong> Up to 24&#8243; (DN600) per ASME B16.5<\/li>\n<li><strong>Large Diameter:<\/strong> 24&#8243; to 48&#8243; (DN600-DN1200)<\/li>\n<li><strong>Extra Large:<\/strong> Above 48&#8243; (DN1200+)<\/li>\n<li><strong>Mega Flanges:<\/strong> 2 to 4 meters diameter<\/li>\n<\/ul>\n<h2>Applications for Large Flanges<\/h2>\n<ul>\n<li><strong>Oil &amp; Gas:<\/strong> Pipeline manifolds, wellhead equipment<\/li>\n<li><strong>Power Generation:<\/strong> Turbine connections, cooling systems<\/li>\n<li><strong>Water Treatment:<\/strong> Pump stations, distribution mains<\/li>\n<li><strong>Chemical:<\/strong> Reactor vessels, storage tanks<\/li>\n<li><strong>Marine:<\/strong> Ship hull connections, offshore platforms<\/li>\n<\/ul>\n<h2>Manufacturing Challenges<\/h2>\n<h3>Material Sourcing<\/h3>\n<p>Large forgings require specialized steel mills with heavy hammer capacity. SongHai partners with certified mills for plates up to 500mm thickness.<\/p>\n<h3>Machining Capability<\/h3>\n<p>CNC vertical lathes with 5-meter capacity ensure dimensional accuracy for large flanges. Surface finish Ra 3.2 or better on sealing faces.<\/p>\n<h3>\u0a24\u0a3e\u0a2a \u0a07\u0a32\u0a3e\u0a1c<\/h3>\n<p>In-house furnace handles solution annealing for stainless steel flanges up to 3 meters diameter.<\/p>\n<h3>\u0a17\u0a41\u0a23\u0a35\u0a71\u0a24\u0a3e \u0a1c\u0a3e\u0a02\u0a1a<\/h3>\n<ul>\n<li>Ultrasonic testing (UT) per ASTM A388<\/li>\n<li>Magnetic particle testing (MT) per ASTM E709<\/li>\n<li>Dimensional inspection with CMM<\/li>\n<li>Hydrostatic testing per ASME B16.5<\/li>\n<\/ul>\n<h2>SongHai Large Flange Capabilities<\/h2>\n<table>\n<tbody>\n<tr>\n<th>Parameter<\/th>\n<th>Capability<\/th>\n<\/tr>\n<tr>\n<td>Maximum Diameter<\/td>\n<td>4000mm (4 meters)<\/td>\n<\/tr>\n<tr>\n<td>Maximum Thickness<\/td>\n<td>500mm<\/td>\n<\/tr>\n<tr>\n<td>Maximum Weight<\/td>\n<td>10 tons per piece<\/td>\n<\/tr>\n<tr>\n<td>\u0a38\u0a2e\u0a71\u0a17\u0a30\u0a40<\/td>\n<td>SS 304\/316\/321\/347, Duplex, Carbon Steel<\/td>\n<\/tr>\n<tr>\n<td>\u0a2e\u0a3f\u0a06\u0a30<\/td>\n<td>ASME, DIN, JIS, GOST, Custom<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<div class=\"quote-box\">\n<h3>\ud83d\udcde Request Large Flange Quote<\/h3>\n<p><strong>\u0a35\u0a1f\u0a38\u0a10\u0a2a:<\/strong> +86-18658777855<\/p>\n<p><strong>\u0a08\u0a2e\u0a47\u0a32:<\/strong> 1007788887@qq.com<\/p>\n<p>\u2713 Custom drawings welcome \u2713 Fast prototyping \u2713 Competitive pricing<\/p>\n<p><a href=\"https:\/\/www.720yun.com\/vr\/a6ajt7ynrw0\" target=\"_blank\" rel=\"noopener\"><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\" title=\"\" 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>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Custom large diameter flanges up to 4 meters. SongHai manufactures extra-large flanges for oil &#038; gas, power, water treatment. ASME DIN certified.<\/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-863","post","type-post","status-publish","format-standard","hentry","category-blog"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.songhaiflange.com\/pa\/wp-json\/wp\/v2\/posts\/863","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=863"}],"version-history":[{"count":5,"href":"https:\/\/www.songhaiflange.com\/pa\/wp-json\/wp\/v2\/posts\/863\/revisions"}],"predecessor-version":[{"id":905,"href":"https:\/\/www.songhaiflange.com\/pa\/wp-json\/wp\/v2\/posts\/863\/revisions\/905"}],"wp:attachment":[{"href":"https:\/\/www.songhaiflange.com\/pa\/wp-json\/wp\/v2\/media?parent=863"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.songhaiflange.com\/pa\/wp-json\/wp\/v2\/categories?post=863"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.songhaiflange.com\/pa\/wp-json\/wp\/v2\/tags?post=863"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}