{"id":1010,"date":"2026-04-17T23:31:30","date_gmt":"2026-04-18T03:31:30","guid":{"rendered":"https:\/\/www.songhaiflange.com\/?p=1010"},"modified":"2026-04-17T23:43:41","modified_gmt":"2026-04-18T03:43:41","slug":"lap-joint-flange-stub-end-assembly-easy-alignment-piping-systems","status":"publish","type":"post","link":"https:\/\/www.songhaiflange.com\/vi\/2026\/04\/17\/lap-joint-flange-stub-end-assembly-easy-alignment-piping-systems\/","title":{"rendered":"B\u1ed9 ph\u1eadn \u0111\u1ea7u n\u1ed1i ng\u1eafn c\u00f3 m\u1eb7t b\u00edch n\u1ed1i ch\u1ed3ng \u2013 H\u1ec7 th\u1ed1ng \u0111\u01b0\u1eddng \u1ed1ng d\u1ec5 c\u0103n ch\u1ec9nh"},"content":{"rendered":"<h2>Understanding Lap Joint Flanges<\/h2>\n<p>A Lap Joint Flange consists of two components: a stub end and a backing flange. The stub end is butt-welded to the pipe, while the backing flange rotates freely around it, allowing for easy bolt hole alignment during assembly.<\/p>\n<h3>Design Features<\/h3>\n<ul>\n<li>Two-piece construction: stub end + backing flange<\/li>\n<li>Backing flange rotates freely for bolt alignment<\/li>\n<li>Stub end provides pressure containment<\/li>\n<li>Available in various materials and finishes<\/li>\n<\/ul>\n<h3>Key Advantages<\/h3>\n<ol>\n<li><strong>Easy Alignment:<\/strong> Rotating flange simplifies bolt hole matching<\/li>\n<li><strong>Cost Savings:<\/strong> Backing flange can be lower-grade material<\/li>\n<li><strong>Quick Disassembly:<\/strong> Ideal for systems requiring frequent maintenance<\/li>\n<li><strong>Reduced Installation Time:<\/strong> No need to rotate pipe for alignment<\/li>\n<li><strong>\u0110a n\u0103ng:<\/strong> Compatible with various stub end materials<\/li>\n<\/ol>\n<h3>Typical Applications<\/h3>\n<ul>\n<li>Low-pressure piping systems<\/li>\n<li>Systems requiring frequent disassembly<\/li>\n<li>Large diameter piping where alignment is challenging<\/li>\n<li>Water treatment and distribution systems<\/li>\n<li>HVAC and fire protection systems<\/li>\n<li>Process piping with expansion joints<\/li>\n<\/ul>\n<h3>Material Combinations<\/h3>\n<table>\n<tr>\n<th>Component<\/th>\n<th>Material Options<\/th>\n<\/tr>\n<tr>\n<td>Stub End<\/td>\n<td>304\/316 Stainless, Carbon Steel, Duplex<\/td>\n<\/tr>\n<tr>\n<td>Backing Flange<\/td>\n<td>Carbon Steel (cost-effective option)<\/td>\n<\/tr>\n<\/table>\n<h3>Standards<\/h3>\n<ul>\n<li>ASME B16.5: Class 150-2500<\/li>\n<li>EN 1092-1: PN6-PN100<\/li>\n<li>GB\/T 9115: Chinese lap joint flange standard<\/li>\n<\/ul>\n<h3>Installation Tips<\/h3>\n<ol>\n<li>Ensure stub end is properly welded to pipe<\/li>\n<li>Verify backing flange rotates freely<\/li>\n<li>Check gasket seating surface is clean<\/li>\n<li>Tighten bolts in cross pattern<\/li>\n<\/ol>\n<p>Lap joint flanges offer an economical and practical solution for piping systems requiring frequent maintenance or where precise bolt alignment is challenging.<\/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-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>Hi\u1ec3u v\u1ec1 m\u1eb7t b\u00edch n\u1ed1i ch\u1ed3ng M\u1eb7t b\u00edch n\u1ed1i ch\u1ed3ng bao g\u1ed3m hai b\u1ed9 ph\u1eadn: \u0111\u1ea7u n\u1ed1i v\u00e0 m\u1eb7t b\u00edch \u0111\u1ee1. \u0110\u1ea7u n\u1ed1i \u0111\u01b0\u1ee3c h\u00e0n \u0111\u1ed1i \u0111\u1ea7u v\u1edbi \u1ed1ng, trong khi m\u1eb7t b\u00edch \u0111\u1ee1 c\u00f3 th\u1ec3 xoay t\u1ef1 do quanh \u0111\u1ea7u n\u1ed1i, gi\u00fap d\u1ec5 d\u00e0ng c\u0103n ch\u1ec9nh l\u1ed7 bu l\u00f4ng trong qu\u00e1 tr\u00ecnh l\u1eafp r\u00e1p. \u0110\u1eb7c \u0111i\u1ec3m thi\u1ebft k\u1ebf C\u1ea5u tr\u00fac hai m\u1ea3nh: \u0111\u1ea7u n\u1ed1i + m\u1eb7t b\u00edch \u0111\u1ee1 M\u1eb7t b\u00edch \u0111\u1ee1 c\u00f3 th\u1ec3 xoay [\u2026]<\/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":[71,66,103,70],"class_list":["post-1010","post","type-post","status-publish","format-standard","hentry","category-blog","tag-facing","tag-flange","tag-lapjoint","tag-standard"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.songhaiflange.com\/vi\/wp-json\/wp\/v2\/posts\/1010","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.songhaiflange.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.songhaiflange.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.songhaiflange.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.songhaiflange.com\/vi\/wp-json\/wp\/v2\/comments?post=1010"}],"version-history":[{"count":2,"href":"https:\/\/www.songhaiflange.com\/vi\/wp-json\/wp\/v2\/posts\/1010\/revisions"}],"predecessor-version":[{"id":1021,"href":"https:\/\/www.songhaiflange.com\/vi\/wp-json\/wp\/v2\/posts\/1010\/revisions\/1021"}],"wp:attachment":[{"href":"https:\/\/www.songhaiflange.com\/vi\/wp-json\/wp\/v2\/media?parent=1010"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.songhaiflange.com\/vi\/wp-json\/wp\/v2\/categories?post=1010"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.songhaiflange.com\/vi\/wp-json\/wp\/v2\/tags?post=1010"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}