{"id":1016,"date":"2026-04-17T23:33:02","date_gmt":"2026-04-18T03:33:02","guid":{"rendered":"https:\/\/www.songhaiflange.com\/?p=1016"},"modified":"2026-04-17T23:42:43","modified_gmt":"2026-04-18T03:42:43","slug":"flange-pressure-rating-class-150-to-2500-pn-selection-guide","status":"publish","type":"post","link":"https:\/\/www.songhaiflange.com\/fr\/2026\/04\/17\/flange-pressure-rating-class-150-to-2500-pn-selection-guide\/","title":{"rendered":"Pression nominale des brides Classe 150 \u00e0 2500 Guide de s\u00e9lection PN"},"content":{"rendered":"<h2>Comprendre les pressions nominales des brides<\/h2>\n<p>La pression nominale d'une bride indique la pression maximale qu'une bride peut supporter en toute s\u00e9curit\u00e9 \u00e0 une temp\u00e9rature donn\u00e9e. Le choix de la pression nominale correcte est essentiel pour la s\u00e9curit\u00e9 et la conformit\u00e9 du syst\u00e8me.<\/p>\n<h3>Classes de pression ASME<\/h3>\n<table>\n<tr>\n<th>Classe<\/th>\n<th>Pression maximale (bar)<\/th>\n<th>Pression maximale (psi)<\/th>\n<th>Applications typiques<\/th>\n<\/tr>\n<tr>\n<td>Classe 150<\/td>\n<td>19.6<\/td>\n<td>285<\/td>\n<td>Eau \u00e0 basse pression, air, services g\u00e9n\u00e9raux<\/td>\n<\/tr>\n<tr>\n<td>Classe 300<\/td>\n<td>51.7<\/td>\n<td>750<\/td>\n<td>Vapeur \u00e0 moyenne pression, tuyauterie industrielle<\/td>\n<\/tr>\n<tr>\n<td>Classe 600<\/td>\n<td>110.4<\/td>\n<td>1600<\/td>\n<td>Vapeur \u00e0 haute pression, p\u00e9trole et gaz<\/td>\n<\/tr>\n<tr>\n<td>Classe 900<\/td>\n<td>165.5<\/td>\n<td>2400<\/td>\n<td>Lignes de process \u00e0 haute pression<\/td>\n<\/tr>\n<tr>\n<td>Classe 1500<\/td>\n<td>275.9<\/td>\n<td>4000<\/td>\n<td>Tr\u00e8s haute pression, \u00e9quipement de t\u00eate de puits<\/td>\n<\/tr>\n<tr>\n<td>Classe 2500<\/td>\n<td>459.8<\/td>\n<td>6670<\/td>\n<td>Applications \u00e0 pression extr\u00eame<\/td>\n<\/tr>\n<\/table>\n<h3>Notations des PN europ\u00e9ens<\/h3>\n<table>\n<tr>\n<th>PN Rating<\/th>\n<th>Pression (bar)<\/th>\n<th>Classe ASME \u00e9quivalente<\/th>\n<\/tr>\n<tr>\n<td>PN6<\/td>\n<td>6<\/td>\n<td>Inf\u00e9rieur \u00e0 la classe 150<\/td>\n<\/tr>\n<tr>\n<td>PN10<\/td>\n<td>10<\/td>\n<td>Inf\u00e9rieur \u00e0 la classe 150<\/td>\n<\/tr>\n<tr>\n<td>PN16<\/td>\n<td>16<\/td>\n<td>Classe 150<\/td>\n<\/tr>\n<tr>\n<td>PN25<\/td>\n<td>25<\/td>\n<td>Classe 150<\/td>\n<\/tr>\n<tr>\n<td>PN40<\/td>\n<td>40<\/td>\n<td>Classe 300<\/td>\n<\/tr>\n<tr>\n<td>PN63<\/td>\n<td>63<\/td>\n<td>Classe 400<\/td>\n<\/tr>\n<tr>\n<td>PN100<\/td>\n<td>100<\/td>\n<td>Classe 600<\/td>\n<\/tr>\n<\/table>\n<h3>Consid\u00e9rations relatives \u00e0 la temp\u00e9rature<\/h3>\n<p>Les pressions nominales diminuent \u00e0 mesure que la temp\u00e9rature augmente. Une bride de classe 150 dont la pression nominale est de 285 psi \u00e0 temp\u00e9rature ambiante peut n'avoir qu'une pression nominale de 150 psi \u00e0 400\u00b0F (204\u00b0C).<\/p>\n<h3>Impact significatif sur la notation<\/h3>\n<ul>\n<li><strong>Acier au carbone (A105) :<\/strong> Caract\u00e9ristiques standard de pression et de temp\u00e9rature<\/li>\n<li><strong>Acier inoxydable (304\/316) :<\/strong> Caract\u00e9ristiques similaires, meilleure r\u00e9sistance \u00e0 la corrosion<\/li>\n<li><strong>Acier alli\u00e9 (F11\/F22) :<\/strong> Maintien de la r\u00e9sistance \u00e0 des temp\u00e9ratures plus \u00e9lev\u00e9es<\/li>\n<li><strong>Acier duplex :<\/strong> Une plus grande r\u00e9sistance permet des conceptions plus fines<\/li>\n<\/ul>\n<h3>Facteurs de s\u00e9lection de la notation<\/h3>\n<ol>\n<li><strong>Pression de conception :<\/strong> Pression maximale attendue du syst\u00e8me<\/li>\n<li><strong>Temp\u00e9rature de conception :<\/strong> Temp\u00e9rature maximale de fonctionnement<\/li>\n<li><strong>Marge de s\u00e9curit\u00e9 :<\/strong> Ajouter 10-25% au-dessus de la pression normale de fonctionnement<\/li>\n<li><strong>Coup de b\u00e9lier :<\/strong> Tenir compte des coups de b\u00e9lier et des conditions transitoires<\/li>\n<li><strong>Exigences du code :<\/strong> ASME B31.1, B31.3, ou r\u00e9glementations locales<\/li>\n<li><strong>Expansion future :<\/strong> Pr\u00e9voir des augmentations potentielles de capacit\u00e9<\/li>\n<\/ol>\n<h3>Les erreurs courantes \u00e0 \u00e9viter<\/h3>\n<ul>\n<li>Utilisation de la temp\u00e9rature ambiante pour un service \u00e0 temp\u00e9rature \u00e9lev\u00e9e<\/li>\n<li>Ignorer les coups de b\u00e9lier et les conditions transitoires<\/li>\n<li>M\u00e9lange de brides de classes de pression diff\u00e9rentes sans r\u00e9ducteurs appropri\u00e9s<\/li>\n<li>Ne pas tenir compte de l'indemnit\u00e9 de corrosion pour le service \u00e0 long terme<\/li>\n<li>Ne pas tenir compte des conditions de vide (pression externe)<\/li>\n<\/ul>\n<h3>Normes et codes<\/h3>\n<ul>\n<li>ASME B16.5 : Brides de tuyaux et raccords \u00e0 brides (NPS 1\/2 \u00e0 24)<\/li>\n<li>ASME B16.47 : Brides de grand diam\u00e8tre (NPS 26 \u00e0 60)<\/li>\n<li>EN 1092-1 : Brides en acier europ\u00e9ennes<\/li>\n<li>ASME B31.1 : Code de la tuyauterie d'\u00e9nergie<\/li>\n<li>ASME B31.3 : Code de la tuyauterie industrielle<\/li>\n<\/ul>\n<h3>Exigences en mati\u00e8re d'essais sous pression<\/h3>\n<p>Les brides sont g\u00e9n\u00e9ralement soumises \u00e0 un essai hydrostatique \u00e0 une pression 1,5 fois sup\u00e9rieure \u00e0 leur pression nominale afin de v\u00e9rifier leur int\u00e9grit\u00e9 avant d'\u00eatre mises en service.<\/p>\n<p>Le choix appropri\u00e9 de la pression nominale de la bride garantit un fonctionnement s\u00fbr, fiable et conforme au code du syst\u00e8me de tuyauterie tout au long de sa dur\u00e9e de vie.<\/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\" 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>","protected":false},"excerpt":{"rendered":"<p>Understanding Flange Pressure Ratings Flange pressure rating indicates the maximum pressure a flange can safely withstand at a specific temperature. Selecting the correct rating is critical for system safety and compliance. ASME Pressure Classes Class Max Pressure (bar) Max Pressure (psi) Typical Applications Class 150 19.6 285 Low pressure water, air, general service Class 300 [&hellip;]<\/p>\n","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":[81,66,89,72,70],"class_list":["post-1016","post","type-post","status-publish","format-standard","hentry","category-blog","tag-ansi","tag-flange","tag-pn16","tag-rating","tag-standard"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.songhaiflange.com\/fr\/wp-json\/wp\/v2\/posts\/1016","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=1016"}],"version-history":[{"count":2,"href":"https:\/\/www.songhaiflange.com\/fr\/wp-json\/wp\/v2\/posts\/1016\/revisions"}],"predecessor-version":[{"id":1018,"href":"https:\/\/www.songhaiflange.com\/fr\/wp-json\/wp\/v2\/posts\/1016\/revisions\/1018"}],"wp:attachment":[{"href":"https:\/\/www.songhaiflange.com\/fr\/wp-json\/wp\/v2\/media?parent=1016"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.songhaiflange.com\/fr\/wp-json\/wp\/v2\/categories?post=1016"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.songhaiflange.com\/fr\/wp-json\/wp\/v2\/tags?post=1016"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}