{"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\/th\/2026\/04\/17\/lap-joint-flange-stub-end-assembly-easy-alignment-piping-systems\/","title":{"rendered":"\u0e0a\u0e38\u0e14\u0e1b\u0e23\u0e30\u0e01\u0e2d\u0e1a\u0e02\u0e49\u0e2d\u0e15\u0e48\u0e2d\u0e41\u0e1a\u0e1a\u0e15\u0e48\u0e2d\u0e0b\u0e49\u0e2d\u0e19\u0e01\u0e31\u0e19\u0e1e\u0e23\u0e49\u0e2d\u0e21\u0e2b\u0e19\u0e49\u0e32\u0e41\u0e1b\u0e25\u0e19\u0e41\u0e25\u0e30\u0e1b\u0e25\u0e32\u0e22\u0e15\u0e31\u0e19 \u0e23\u0e30\u0e1a\u0e1a\u0e17\u0e48\u0e2d\u0e08\u0e31\u0e14\u0e41\u0e19\u0e27\u0e44\u0e14\u0e49\u0e07\u0e48\u0e32\u0e22"},"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>\u0e04\u0e38\u0e13\u0e2a\u0e21\u0e1a\u0e31\u0e15\u0e34\u0e01\u0e32\u0e23\u0e2d\u0e2d\u0e01\u0e41\u0e1a\u0e1a<\/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>\u0e04\u0e27\u0e32\u0e21\u0e2b\u0e25\u0e32\u0e01\u0e2b\u0e25\u0e32\u0e22\u0e43\u0e19\u0e01\u0e32\u0e23\u0e43\u0e0a\u0e49\u0e07\u0e32\u0e19:<\/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>\u0e23\u0e30\u0e1a\u0e1a\u0e17\u0e35\u0e48\u0e15\u0e49\u0e2d\u0e07\u0e16\u0e2d\u0e14\u0e1b\u0e23\u0e30\u0e01\u0e2d\u0e1a\u0e1a\u0e48\u0e2d\u0e22\u0e04\u0e23\u0e31\u0e49\u0e07<\/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>\u0e21\u0e32\u0e15\u0e23\u0e10\u0e32\u0e19<\/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>\u0e2d\u0e35\u0e40\u0e21\u0e25:<\/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>\u0e01\u0e32\u0e23\u0e17\u0e33\u0e04\u0e27\u0e32\u0e21\u0e40\u0e02\u0e49\u0e32\u0e43\u0e08\u0e2b\u0e19\u0e49\u0e32\u0e41\u0e1b\u0e25\u0e19\u0e41\u0e1a\u0e1a\u0e15\u0e48\u0e2d\u0e0b\u0e49\u0e2d\u0e19 (Lap Joint Flange) \u0e2b\u0e19\u0e49\u0e32\u0e41\u0e1b\u0e25\u0e19\u0e41\u0e1a\u0e1a\u0e15\u0e48\u0e2d\u0e0b\u0e49\u0e2d\u0e19\u0e1b\u0e23\u0e30\u0e01\u0e2d\u0e1a\u0e14\u0e49\u0e27\u0e22\u0e2a\u0e2d\u0e07\u0e2a\u0e48\u0e27\u0e19\u0e2b\u0e25\u0e31\u0e01 \u0e44\u0e14\u0e49\u0e41\u0e01\u0e48 \u0e2a\u0e48\u0e27\u0e19\u0e1b\u0e25\u0e32\u0e22\u0e15\u0e31\u0e19 (stub end) \u0e41\u0e25\u0e30\u0e2a\u0e48\u0e27\u0e19\u0e2b\u0e19\u0e49\u0e32\u0e41\u0e1b\u0e25\u0e19\u0e23\u0e2d\u0e07\u0e23\u0e31\u0e1a (backing flange) \u0e42\u0e14\u0e22\u0e2a\u0e48\u0e27\u0e19\u0e1b\u0e25\u0e32\u0e22\u0e15\u0e31\u0e19\u0e08\u0e30\u0e16\u0e39\u0e01\u0e40\u0e0a\u0e37\u0e48\u0e2d\u0e21\u0e41\u0e1a\u0e1a\u0e1autt-weld \u0e40\u0e02\u0e49\u0e32\u0e01\u0e31\u0e1a\u0e17\u0e48\u0e2d \u0e43\u0e19\u0e02\u0e13\u0e30\u0e17\u0e35\u0e48\u0e2a\u0e48\u0e27\u0e19\u0e2b\u0e19\u0e49\u0e32\u0e41\u0e1b\u0e25\u0e19\u0e23\u0e2d\u0e07\u0e23\u0e31\u0e1a\u0e2a\u0e32\u0e21\u0e32\u0e23\u0e16\u0e2b\u0e21\u0e38\u0e19\u0e23\u0e2d\u0e1a\u0e2a\u0e48\u0e27\u0e19\u0e1b\u0e25\u0e32\u0e22\u0e15\u0e31\u0e19\u0e44\u0e14\u0e49\u0e2d\u0e22\u0e48\u0e32\u0e07\u0e2d\u0e34\u0e2a\u0e23\u0e30 \u0e0a\u0e48\u0e27\u0e22\u0e43\u0e2b\u0e49\u0e08\u0e31\u0e14\u0e41\u0e19\u0e27\u0e23\u0e39\u0e2a\u0e25\u0e31\u0e01\u0e44\u0e14\u0e49\u0e07\u0e48\u0e32\u0e22\u0e23\u0e30\u0e2b\u0e27\u0e48\u0e32\u0e07\u0e01\u0e32\u0e23\u0e1b\u0e23\u0e30\u0e01\u0e2d\u0e1a \u0e04\u0e38\u0e13\u0e25\u0e31\u0e01\u0e29\u0e13\u0e30\u0e01\u0e32\u0e23\u0e2d\u0e2d\u0e01\u0e41\u0e1a\u0e1a \u0e42\u0e04\u0e23\u0e07\u0e2a\u0e23\u0e49\u0e32\u0e07\u0e2a\u0e2d\u0e07\u0e0a\u0e34\u0e49\u0e19\u0e2a\u0e48\u0e27\u0e19: \u0e2a\u0e48\u0e27\u0e19\u0e1b\u0e25\u0e32\u0e22\u0e15\u0e31\u0e19 + \u0e2a\u0e48\u0e27\u0e19\u0e2b\u0e19\u0e49\u0e32\u0e41\u0e1b\u0e25\u0e19\u0e23\u0e2d\u0e07\u0e23\u0e31\u0e1a \u0e2a\u0e48\u0e27\u0e19\u0e2b\u0e19\u0e49\u0e32\u0e41\u0e1b\u0e25\u0e19\u0e23\u0e2d\u0e07\u0e23\u0e31\u0e1a\u0e2a\u0e32\u0e21\u0e32\u0e23\u0e16\u0e2b\u0e21\u0e38\u0e19\u0e44\u0e14\u0e49 [\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\/th\/wp-json\/wp\/v2\/posts\/1010","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.songhaiflange.com\/th\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.songhaiflange.com\/th\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.songhaiflange.com\/th\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.songhaiflange.com\/th\/wp-json\/wp\/v2\/comments?post=1010"}],"version-history":[{"count":2,"href":"https:\/\/www.songhaiflange.com\/th\/wp-json\/wp\/v2\/posts\/1010\/revisions"}],"predecessor-version":[{"id":1021,"href":"https:\/\/www.songhaiflange.com\/th\/wp-json\/wp\/v2\/posts\/1010\/revisions\/1021"}],"wp:attachment":[{"href":"https:\/\/www.songhaiflange.com\/th\/wp-json\/wp\/v2\/media?parent=1010"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.songhaiflange.com\/th\/wp-json\/wp\/v2\/categories?post=1010"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.songhaiflange.com\/th\/wp-json\/wp\/v2\/tags?post=1010"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}