{"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\/de\/2026\/04\/12\/flange-size-chart-reading-asme-b16-5-dimension-tables\/","title":{"rendered":"Flanschgr\u00f6\u00dfentabelle ASME B16.5 Ma\u00dftabellen lesen"},"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
    \nE-Mail:<\/strong>\u00a01007788887@qq.com
    \n\"\"<\/a><\/p>","protected":false},"excerpt":{"rendered":"

    Beherrschen der ASME B16.5 Flanschabmessungen Eine Flanschgr\u00f6\u00dfentabelle gew\u00e4hrleistet die korrekte Montage, die Ausrichtung der Schrauben und den Sitz der Dichtungen. Falsches Lesen von Tabellen f\u00fchrt zu kostspieligen Fehlern. Wichtige Abmessungsparameter NPS Nominale Rohrgr\u00f6\u00dfe (nicht tats\u00e4chlicher Au\u00dfendurchmesser f\u00fcr 14 Zoll+) Klasse Druckstufe: 150, 300, 600, 900, 1500, 2500 Au\u00dfendurchmesser Gesamtdurchmesser des Flansches Dicke Flanschdicke an der Nabe [...]<\/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\/de\/wp-json\/wp\/v2\/posts\/980","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.songhaiflange.com\/de\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.songhaiflange.com\/de\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.songhaiflange.com\/de\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.songhaiflange.com\/de\/wp-json\/wp\/v2\/comments?post=980"}],"version-history":[{"count":3,"href":"https:\/\/www.songhaiflange.com\/de\/wp-json\/wp\/v2\/posts\/980\/revisions"}],"predecessor-version":[{"id":985,"href":"https:\/\/www.songhaiflange.com\/de\/wp-json\/wp\/v2\/posts\/980\/revisions\/985"}],"wp:attachment":[{"href":"https:\/\/www.songhaiflange.com\/de\/wp-json\/wp\/v2\/media?parent=980"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.songhaiflange.com\/de\/wp-json\/wp\/v2\/categories?post=980"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.songhaiflange.com\/de\/wp-json\/wp\/v2\/tags?post=980"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}