{"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\/pa\/2026\/04\/12\/flange-size-chart-reading-asme-b16-5-dimension-tables\/","title":{"rendered":"\u0a2b\u0a32\u0a48\u0a02\u0a1c \u0a06\u0a15\u0a3e\u0a30 \u0a1a\u0a3e\u0a30\u0a1f: ASME B16.5 \u0a2e\u0a3e\u0a2a-\u0a2a\u0a30\u0a3f\u0a2e\u0a3e\u0a23 \u0a38\u0a3e\u0a30\u0a23\u0a40\u0a06\u0a02 \u0a26\u0a40 \u0a2a\u0a5c\u0a4d\u0a39\u0a3e\u0a08"},"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
\u0a10\u0a28.\u0a2a\u0a40.\u0a10\u0a38.<\/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
\u0a10\u0a28.\u0a2a\u0a40.\u0a10\u0a38.<\/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
\u0a10\u0a28.\u0a2a\u0a40.\u0a10\u0a38.<\/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

    \u0a35\u0a1f\u0a38\u0a10\u0a2a:<\/strong>\u00a0+86-18658777855
    \n\u0a08\u0a2e\u0a47\u0a32:<\/strong>\u00a01007788887@qq.com
    \n\"\"<\/a><\/p>","protected":false},"excerpt":{"rendered":"

    ASME B16.5 \u0a2b\u0a32\u0a48\u0a02\u0a1c \u0a2e\u0a3e\u0a2a\u0a3e\u0a02 \u0a26\u0a40 \u0a2e\u0a3e\u0a38\u0a1f\u0a30\u0a3f\u0a70\u0a17 \u0a07\u0a71\u0a15 \u0a2b\u0a32\u0a48\u0a02\u0a1c \u0a06\u0a15\u0a3e\u0a30 \u0a1a\u0a3e\u0a30\u0a1f \u0a38\u0a39\u0a40 \u0a2b\u0a3f\u0a1f-\u0a05\u0a71\u0a2a, \u0a2c\u0a4b\u0a32\u0a1f \u0a38\u0a39\u0a40 \u0a32\u0a3e\u0a08\u0a28\u0a05\u0a2a \u0a05\u0a24\u0a47 \u0a17\u0a48\u0a38\u0a15\u0a47\u0a1f \u0a2c\u0a48\u0a20\u0a23 \u0a28\u0a42\u0a70 \u0a2f\u0a15\u0a40\u0a28\u0a40 \u0a2c\u0a23\u0a3e\u0a09\u0a02\u0a26\u0a3e \u0a39\u0a48\u0964 \u0a1f\u0a47\u0a2c\u0a32\u0a3e\u0a02 \u0a28\u0a42\u0a70 \u0a17\u0a32\u0a24 \u0a2a\u0a5c\u0a4d\u0a39\u0a28 \u0a28\u0a3e\u0a32 \u0a2e\u0a39\u0a3f\u0a70\u0a17\u0a40\u0a06\u0a02 \u0a17\u0a32\u0a24\u0a40\u0a06\u0a02 \u0a39\u0a41\u0a70\u0a26\u0a40\u0a06\u0a02 \u0a39\u0a28\u0964 \u0a2e\u0a41\u0a71\u0a16 \u0a2e\u0a3e\u0a2a \u0a2a\u0a48\u0a30\u0a3e\u0a2e\u0a40\u0a1f\u0a30 NPS \u0a28\u0a4b\u0a2e\u0a3f\u0a28\u0a32 \u0a2a\u0a3e\u0a08\u0a2a \u0a06\u0a15\u0a3e\u0a30 (14 \u0a07\u0a70\u0a1a+ \u0a32\u0a08 \u0a05\u0a38\u0a32 \u0a2c\u0a3e\u0a39\u0a30\u0a40 \u0a35\u0a3f\u0a06\u0a38 \u0a28\u0a39\u0a40\u0a02) \u0a15\u0a32\u0a3e\u0a38 \u0a26\u0a2c\u0a3e\u0a05 \u0a30\u0a47\u0a1f\u0a3f\u0a70\u0a17: 150, 300, 600, 900, 1500, 2500 \u0a2c\u0a3e\u0a39\u0a30\u0a40 \u0a35\u0a3f\u0a06\u0a38 \u0a15\u0a41\u0a71\u0a32 \u0a2b\u0a32\u0a48\u0a02\u0a1c \u0a35\u0a3f\u0a06\u0a38 \u0a2e\u0a4b\u0a1f\u0a3e\u0a08 \u0a39\u0a71\u0a2c '\u0a24\u0a47 \u0a2b\u0a32\u0a48\u0a02\u0a1c \u0a26\u0a40 \u0a2e\u0a4b\u0a1f\u0a3e\u0a08 [\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":[],"class_list":["post-980","post","type-post","status-publish","format-standard","hentry","category-blog"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.songhaiflange.com\/pa\/wp-json\/wp\/v2\/posts\/980","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.songhaiflange.com\/pa\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.songhaiflange.com\/pa\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.songhaiflange.com\/pa\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.songhaiflange.com\/pa\/wp-json\/wp\/v2\/comments?post=980"}],"version-history":[{"count":3,"href":"https:\/\/www.songhaiflange.com\/pa\/wp-json\/wp\/v2\/posts\/980\/revisions"}],"predecessor-version":[{"id":985,"href":"https:\/\/www.songhaiflange.com\/pa\/wp-json\/wp\/v2\/posts\/980\/revisions\/985"}],"wp:attachment":[{"href":"https:\/\/www.songhaiflange.com\/pa\/wp-json\/wp\/v2\/media?parent=980"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.songhaiflange.com\/pa\/wp-json\/wp\/v2\/categories?post=980"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.songhaiflange.com\/pa\/wp-json\/wp\/v2\/tags?post=980"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}