{"id":980,"date":"2026-04-12T23:09:03","date_gmt":"2026-04-13T03:09:03","guid":{"rendered":"https:\/\/www.songhaiflange.com\/?p=980"},"modified":"2026-04-12T23:19:38","modified_gmt":"2026-04-13T03:19:38","slug":"flange-size-chart-reading-asme-b16-5-dimension-tables","status":"publish","type":"post","link":"https:\/\/www.songhaiflange.com\/fr\/2026\/04\/12\/flange-size-chart-reading-asme-b16-5-dimension-tables\/","title":{"rendered":"Tableau des dimensions des brides - Lecture des tableaux de dimensions ASME B16.5"},"content":{"rendered":"

Mastering ASME B16.5 Flange Dimensions<\/h2>\n

A flange size chart ensures proper fit-up, bolt alignment, and gasket seating. Misreading tables leads to costly mistakes.<\/p>\n

Key Dimension Parameters<\/h2>\n
\n
NPS<\/dt>\n
Nominal Pipe Size (not actual OD for 14 inch+)<\/dd>\n
Class<\/dt>\n
Pressure rating: 150, 300, 600, 900, 1500, 2500<\/dd>\n
Outside Diameter<\/dt>\n
Overall flange diameter<\/dd>\n
Thickness<\/dt>\n
Flange thickness at hub<\/dd>\n
Bolt Circle<\/dt>\n
Diameter through bolt hole centers<\/dd>\n
Number of Bolts<\/dt>\n
Increases with NPS and class<\/dd>\n<\/dl>\n

Class 150 Dimensions<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n
NPS<\/th>\nOD<\/th>\nThickness<\/th>\nBolt Circle<\/th>\nBolts<\/th>\n<\/tr>\n
1\/2<\/td>\n3.50<\/td>\n0.44<\/td>\n2.38<\/td>\n4<\/td>\n<\/tr>\n
1<\/td>\n4.25<\/td>\n0.56<\/td>\n3.12<\/td>\n4<\/td>\n<\/tr>\n
2<\/td>\n6.00<\/td>\n0.69<\/td>\n4.75<\/td>\n4<\/td>\n<\/tr>\n
4<\/td>\n9.00<\/td>\n0.81<\/td>\n7.50<\/td>\n8<\/td>\n<\/tr>\n
6<\/td>\n11.00<\/td>\n0.94<\/td>\n9.50<\/td>\n8<\/td>\n<\/tr>\n
8<\/td>\n13.50<\/td>\n1.06<\/td>\n11.75<\/td>\n8<\/td>\n<\/tr>\n
10<\/td>\n16.00<\/td>\n1.12<\/td>\n14.25<\/td>\n12<\/td>\n<\/tr>\n
12<\/td>\n19.00<\/td>\n1.19<\/td>\n17.00<\/td>\n12<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Class 300 Dimensions<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n
NPS<\/th>\nOD<\/th>\nThickness<\/th>\nBolt Circle<\/th>\nBolts<\/th>\n<\/tr>\n
1\/2<\/td>\n3.75<\/td>\n0.56<\/td>\n2.62<\/td>\n4<\/td>\n<\/tr>\n
1<\/td>\n4.88<\/td>\n0.69<\/td>\n3.50<\/td>\n4<\/td>\n<\/tr>\n
2<\/td>\n6.50<\/td>\n0.88<\/td>\n5.00<\/td>\n4<\/td>\n<\/tr>\n
4<\/td>\n10.00<\/td>\n1.12<\/td>\n7.88<\/td>\n8<\/td>\n<\/tr>\n
6<\/td>\n12.50<\/td>\n1.38<\/td>\n10.62<\/td>\n8<\/td>\n<\/tr>\n
8<\/td>\n15.00<\/td>\n1.56<\/td>\n13.00<\/td>\n8<\/td>\n<\/tr>\n
10<\/td>\n17.50<\/td>\n1.69<\/td>\n15.25<\/td>\n12<\/td>\n<\/tr>\n
12<\/td>\n21.00<\/td>\n1.81<\/td>\n18.50<\/td>\n12<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Common Mistakes<\/h2>\n
    \n
  1. Confusing NPS with actual dimensions<\/li>\n
  2. Mixing pressure classes (150 won’t bolt to 300)<\/li>\n
  3. Ignoring facing type (RF vs RTJ)<\/li>\n<\/ol>\n

    Songhai Flange<\/strong> provides dimension tables and CAD drawings for all products.<\/p>\n

    WhatsApp :<\/strong>\u00a0+86-18658777855
    \nCourriel :<\/strong>\u00a01007788887@qq.com
    \n\"\"<\/a><\/p>","protected":false},"excerpt":{"rendered":"

    Ma\u00eetriser les dimensions des brides ASME B16.5 Un tableau des dimensions des brides garantit un ajustement correct, l'alignement des boulons et l'assise des joints. Une mauvaise lecture des tableaux entra\u00eene des erreurs co\u00fbteuses. Param\u00e8tres dimensionnels cl\u00e9s NPS Diam\u00e8tre nominal du tuyau (pas le diam\u00e8tre ext\u00e9rieur r\u00e9el pour 14 pouces et plus) Classe Pression nominale : 150, 300, 600, 900, 1500, 2500 Diam\u00e8tre ext\u00e9rieur Diam\u00e8tre global de la bride Epaisseur Epaisseur de la bride au niveau du moyeu [...]<\/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-980","post","type-post","status-publish","format-standard","hentry","category-blog"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.songhaiflange.com\/fr\/wp-json\/wp\/v2\/posts\/980","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=980"}],"version-history":[{"count":3,"href":"https:\/\/www.songhaiflange.com\/fr\/wp-json\/wp\/v2\/posts\/980\/revisions"}],"predecessor-version":[{"id":985,"href":"https:\/\/www.songhaiflange.com\/fr\/wp-json\/wp\/v2\/posts\/980\/revisions\/985"}],"wp:attachment":[{"href":"https:\/\/www.songhaiflange.com\/fr\/wp-json\/wp\/v2\/media?parent=980"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.songhaiflange.com\/fr\/wp-json\/wp\/v2\/categories?post=980"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.songhaiflange.com\/fr\/wp-json\/wp\/v2\/tags?post=980"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}