{"id":974,"date":"2026-04-12T23:09:01","date_gmt":"2026-04-13T03:09:01","guid":{"rendered":"https:\/\/www.songhaiflange.com\/?p=974"},"modified":"2026-04-12T23:20:18","modified_gmt":"2026-04-13T03:20:18","slug":"orifice-flanges-complete-guide-selection-installation-and-flow-measurement-standards","status":"publish","type":"post","link":"https:\/\/www.songhaiflange.com\/fr\/2026\/04\/12\/orifice-flanges-complete-guide-selection-installation-and-flow-measurement-standards\/","title":{"rendered":"Brides \u00e0 orifice Guide complet de s\u00e9lection Installation et normes de mesure de d\u00e9bit"},"content":{"rendered":"<h2>What Are Orifice Flanges and How Do They Work<\/h2>\n<p>Orifice flanges are specialized piping components designed for precise flow measurement in pressurized systems. Unlike standard weld neck flanges, orifice flanges feature tapped holes (pressure taps) drilled radially through the base, enabling accurate differential pressure readings across an orifice plate.<\/p>\n<p>At Songhai Flange, we understand that proper flow measurement is critical for custody transfer, process control, and regulatory compliance.<\/p>\n<h3>The Science Behind Orifice Flow Measurement<\/h3>\n<p>When fluid passes through an orifice plate precisely sized bore, it creates a pressure differential between the upstream and downstream sides. This allows instrumentation to calculate exact flow rates using Bernoulli principle.<\/p>\n<p>The accuracy depends on:<\/p>\n<ul>\n<li>Proper flange tapping location (flange taps, corner taps, or D and D\/2 taps)<\/li>\n<li>Correct orifice plate bore diameter and beta ratio (typically 0.3 to 0.7)<\/li>\n<li>Adherence to ASME B16.36 and API 2530 standards<\/li>\n<li>Proper installation orientation based on fluid type<\/li>\n<\/ul>\n<h2>Orifice Flange Types and Configurations<\/h2>\n<h3>Weld Neck Orifice Flange Pairs<\/h3>\n<p>The most common configuration for critical applications with jack screws for maintenance without cutting pipeline.<\/p>\n<h3>Slip-On and Threaded Options<\/h3>\n<p>For lower-pressure utility applications (Class 150 and 300), cost-effective alternatives with reduced space requirements.<\/p>\n<h2>Material Selection<\/h2>\n<ul>\n<li><strong>Carbon Steel (A105):<\/strong> Oil, gas, petrochemical, -20F to 800F<\/li>\n<li><strong>Stainless Steel (F304\/F316):<\/strong> Corrosive service, marine applications<\/li>\n<li><strong>Low-Temp (A350 LF2):<\/strong> LNG, cryogenic applications<\/li>\n<li><strong>Chrome-Moly (F11\/F22\/F91):<\/strong> High-temperature power generation<\/li>\n<\/ul>\n<h2>ASME B16.36 Specifications<\/h2>\n<table border=\"1\" cellpadding=\"8\">\n<tr>\n<th>Specification<\/th>\n<th>D\u00e9tails<\/th>\n<\/tr>\n<tr>\n<td>Size Range<\/td>\n<td>1 inch through 24 inch<\/td>\n<\/tr>\n<tr>\n<td>Pressure Classes<\/td>\n<td>300, 400, 600, 900, 1500, 2500<\/td>\n<\/tr>\n<tr>\n<td>Materials<\/td>\n<td>A105, F304\/F304L, F316\/F316L, A350 LF2<\/td>\n<\/tr>\n<tr>\n<td>Flow Standard<\/td>\n<td>API 2530 \/ ISO 5167<\/td>\n<\/tr>\n<\/table>\n<h2>Why Choose Songhai Flange<\/h2>\n<p>Songhai Flange manufactures orifice flanges to ASME B16.36 standards with full material traceability. Contact us for competitive quotes and technical support.<\/p>\n<p><strong>WhatsApp :<\/strong>\u00a0+86-18658777855<br \/>\n<strong>Courriel :<\/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>Que sont les brides \u00e0 orifice et comment fonctionnent-elles Les brides \u00e0 orifice sont des composants de tuyauterie sp\u00e9cialis\u00e9s con\u00e7us pour mesurer avec pr\u00e9cision le d\u00e9bit dans les syst\u00e8mes sous pression. Contrairement aux brides \u00e0 collet soud\u00e9 standard, les brides \u00e0 orifice comportent des trous taraud\u00e9s (prises de pression) perc\u00e9s radialement \u00e0 travers la base, ce qui permet des mesures pr\u00e9cises de la pression diff\u00e9rentielle \u00e0 travers une plaque \u00e0 orifice. Chez Songhai Flange, nous comprenons que [...]<\/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-974","post","type-post","status-publish","format-standard","hentry","category-blog"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.songhaiflange.com\/fr\/wp-json\/wp\/v2\/posts\/974","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.songhaiflange.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.songhaiflange.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.songhaiflange.com\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.songhaiflange.com\/fr\/wp-json\/wp\/v2\/comments?post=974"}],"version-history":[{"count":2,"href":"https:\/\/www.songhaiflange.com\/fr\/wp-json\/wp\/v2\/posts\/974\/revisions"}],"predecessor-version":[{"id":989,"href":"https:\/\/www.songhaiflange.com\/fr\/wp-json\/wp\/v2\/posts\/974\/revisions\/989"}],"wp:attachment":[{"href":"https:\/\/www.songhaiflange.com\/fr\/wp-json\/wp\/v2\/media?parent=974"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.songhaiflange.com\/fr\/wp-json\/wp\/v2\/categories?post=974"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.songhaiflange.com\/fr\/wp-json\/wp\/v2\/tags?post=974"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}