{"id":1026,"date":"2026-04-20T22:34:21","date_gmt":"2026-04-21T02:34:21","guid":{"rendered":"https:\/\/www.songhaiflange.com\/?p=1026"},"modified":"2026-04-21T20:18:43","modified_gmt":"2026-04-22T00:18:43","slug":"flange-bolt-torque-values-complete-chart-for-all-pressure-classes","status":"publish","type":"post","link":"https:\/\/www.songhaiflange.com\/vi\/2026\/04\/20\/flange-bolt-torque-values-complete-chart-for-all-pressure-classes\/","title":{"rendered":"B\u1ea3ng gi\u00e1 tr\u1ecb m\u00f4-men xo\u1eafn bu-l\u00f4ng m\u1eb7t b\u00edch \u0111\u1ea7y \u0111\u1ee7 cho t\u1ea5t c\u1ea3 c\u00e1c c\u1ea5p \u00e1p su\u1ea5t"},"content":{"rendered":"<h2>H\u01b0\u1edbng d\u1eabn si\u1ebft bu-l\u00f4ng m\u1eb7t b\u00edch \u0111\u00fang c\u00e1ch<\/h2>\n<p>M\u00f4-men xo\u1eafn bu-l\u00f4ng ch\u00ednh x\u00e1c l\u00e0 y\u1ebfu t\u1ed1 quan tr\u1ecdng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o c\u00e1c m\u1ed1i n\u1ed1i m\u1eb7t b\u00edch kh\u00f4ng b\u1ecb r\u00f2 r\u1ec9. M\u00f4-men xo\u1eafn qu\u00e1 th\u1ea5p s\u1ebd d\u1eabn \u0111\u1ebfn hi\u1ec7n t\u01b0\u1ee3ng gio\u0103ng b\u1ecb bung ra, trong khi m\u00f4-men xo\u1eafn qu\u00e1 cao c\u00f3 th\u1ec3 l\u00e0m h\u1ecfng gio\u0103ng ho\u1eb7c l\u00e0m bi\u1ebfn d\u1ea1ng b\u1ec1 m\u1eb7t m\u1eb7t b\u00edch.<\/p>\n<h3>T\u1ea1i sao m\u00f4-men xo\u1eafn c\u1ee7a bu-l\u00f4ng l\u1ea1i quan tr\u1ecdng<\/h3>\n<ul>\n<li>\u0110\u1ea3m b\u1ea3o \u0111\u1ed9 n\u00e9n \u0111\u1ed3ng \u0111\u1ec1u c\u1ee7a gio\u0103ng<\/li>\n<li>Ng\u0103n ng\u1eeba r\u00f2 r\u1ec9 \u1edf m\u1eb7t b\u00edch trong \u0111i\u1ec1u ki\u1ec7n v\u1eadn h\u00e0nh<\/li>\n<li>B\u00f9 \u0111\u1eafp cho hi\u1ec7n t\u01b0\u1ee3ng tr\u01b0\u1ee3t v\u00e0 gi\u00e3n n\u1edf c\u1ee7a gio\u0103ng<\/li>\n<li>Gi\u1eef nguy\u00ean t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a m\u1ed1i n\u1ed1i trong qu\u00e1 tr\u00ecnh thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9<\/li>\n<\/ul>\n<h3>Gi\u00e1 tr\u1ecb m\u00f4-men xo\u1eafn bu-l\u00f4ng lo\u1ea1i 150 (ft-lbs)<\/h3>\n<table>\n<tr>\n<th>K\u00edch th\u01b0\u1edbc<\/th>\n<th>K\u00edch th\u01b0\u1edbc bu-l\u00f4ng<\/th>\n<th>S\u1ed1 l\u01b0\u1ee3ng<\/th>\n<th>Kh\u00f4ng b\u00f4i tr\u01a1n<\/th>\n<th>\u0110\u01b0\u1ee3c b\u00f4i tr\u01a1n<\/th>\n<\/tr>\n<tr>\n<td>1\/2 inch<\/td>\n<td>1\/2\u2033-13<\/td>\n<td>4<\/td>\n<td>45<\/td>\n<td>35<\/td>\n<\/tr>\n<tr>\n<td>1\u2033<\/td>\n<td>5\/8\u2033-11<\/td>\n<td>4<\/td>\n<td>85<\/td>\n<td>65<\/td>\n<\/tr>\n<tr>\n<td>2\u2033<\/td>\n<td>3\/4\u2033-10<\/td>\n<td>4<\/td>\n<td>150<\/td>\n<td>115<\/td>\n<\/tr>\n<tr>\n<td>4\u2033<\/td>\n<td>5\/8\u2033-11<\/td>\n<td>8<\/td>\n<td>85<\/td>\n<td>65<\/td>\n<\/tr>\n<tr>\n<td>6 inch<\/td>\n<td>3\/4\u2033-10<\/td>\n<td>8<\/td>\n<td>150<\/td>\n<td>115<\/td>\n<\/tr>\n<tr>\n<td>12 inch<\/td>\n<td>7\/8\u2033\u20139<\/td>\n<td>12<\/td>\n<td>250<\/td>\n<td>190<\/td>\n<\/tr>\n<\/table>\n<h3>Gi\u00e1 tr\u1ecb m\u00f4-men xo\u1eafn bu-l\u00f4ng lo\u1ea1i 300 (ft-lbs)<\/h3>\n<table>\n<tr>\n<th>K\u00edch th\u01b0\u1edbc<\/th>\n<th>K\u00edch th\u01b0\u1edbc bu-l\u00f4ng<\/th>\n<th>S\u1ed1 l\u01b0\u1ee3ng<\/th>\n<th>Kh\u00f4ng b\u00f4i tr\u01a1n<\/th>\n<th>\u0110\u01b0\u1ee3c b\u00f4i tr\u01a1n<\/th>\n<\/tr>\n<tr>\n<td>1\/2 inch<\/td>\n<td>1\/2\u2033-13<\/td>\n<td>4<\/td>\n<td>65<\/td>\n<td>50<\/td>\n<\/tr>\n<tr>\n<td>2\u2033<\/td>\n<td>3\/4\u2033-10<\/td>\n<td>8<\/td>\n<td>185<\/td>\n<td>140<\/td>\n<\/tr>\n<tr>\n<td>4\u2033<\/td>\n<td>3\/4\u2033-10<\/td>\n<td>8<\/td>\n<td>185<\/td>\n<td>140<\/td>\n<\/tr>\n<tr>\n<td>6 inch<\/td>\n<td>7\/8\u2033\u20139<\/td>\n<td>8<\/td>\n<td>290<\/td>\n<td>220<\/td>\n<\/tr>\n<tr>\n<td>12 inch<\/td>\n<td>1\u2033\u20138<\/td>\n<td>12<\/td>\n<td>425<\/td>\n<td>320<\/td>\n<\/tr>\n<\/table>\n<h3>H\u01b0\u1edbng d\u1eabn v\u1ec1 m\u00f4-men xo\u1eafn cho d\u00f2ng 600-2500<\/h3>\n<p>C\u00e1c c\u1ea5p \u00e1p su\u1ea5t cao h\u01a1n \u0111\u00f2i h\u1ecfi gi\u00e1 tr\u1ecb m\u00f4-men xo\u1eafn ph\u1ea3i cao h\u01a1n \u0111\u00e1ng k\u1ec3. Lu\u00f4n tham kh\u1ea3o th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t \u0111\u1ed1i v\u1edbi c\u00e1c lo\u1ea1i m\u1eb7t b\u00edch c\u1ea5p 900, 1500 v\u00e0 2500.<\/p>\n<h3>Quy tr\u00ecnh si\u1ebft bu-l\u00f4ng<\/h3>\n<ol>\n<li><strong>S\u1ea1ch s\u1ebd:<\/strong> Lo\u1ea1i b\u1ecf b\u1ee5i b\u1ea9n, r\u1ec9 s\u00e9t v\u00e0 c\u00e1c m\u1ea3nh v\u1ee5n c\u1ee7a mi\u1ebfng \u0111\u1ec7m c\u0169 kh\u1ecfi b\u1ec1 m\u1eb7t m\u1eb7t b\u00edch<\/li>\n<li><strong>Ki\u1ec3m tra:<\/strong> Ki\u1ec3m tra b\u1ec1 m\u1eb7t m\u1eb7t b\u00edch xem c\u00f3 b\u1ecb h\u01b0 h\u1ecfng ho\u1eb7c bi\u1ebfn d\u1ea1ng kh\u00f4ng<\/li>\n<li><strong>B\u00f4i tr\u01a1n:<\/strong> B\u00f4i ch\u1ea5t ch\u1ed1ng k\u1eb9t l\u00ean ren bu-l\u00f4ng v\u00e0 m\u1eb7t \u0111ai \u1ed1c<\/li>\n<li><strong>Ch\u00e8n:<\/strong> \u0110\u1eb7t mi\u1ebfng \u0111\u1ec7m v\u00e0o ch\u00ednh gi\u1eefa m\u1eb7t b\u00edch<\/li>\n<li><strong>V\u1eb7n ch\u1eb7t b\u1eb1ng tay:<\/strong> V\u1eb7n ch\u1eb7t t\u1ea5t c\u1ea3 c\u00e1c \u0111ai \u1ed1c b\u1eb1ng tay<\/li>\n<li><strong>M\u1eabu:<\/strong> S\u1eed d\u1ee5ng m\u1eabu h\u00ecnh sao\/ch\u1eef th\u1eadp \u0111\u1ec3 n\u00e9n \u0111\u1ec1u<\/li>\n<li><strong>D\u00e3y:<\/strong> Si\u1ebft ch\u1eb7t \u0111\u1ebfn 30%, sau \u0111\u00f3 \u0111\u1ebfn 60%, r\u1ed3i \u0111\u1ebfn 100% (gi\u00e1 tr\u1ecb cu\u1ed1i c\u00f9ng)<\/li>\n<li><strong>X\u00e1c minh:<\/strong> Ki\u1ec3m tra l\u1ea1i t\u1ea5t c\u1ea3 c\u00e1c bu-l\u00f4ng sau khi si\u1ebft l\u1ef1c ban \u0111\u1ea7u<\/li>\n<\/ol>\n<h3>Nh\u1eefng \u0111i\u1ec1u c\u1ea7n l\u01b0u \u00fd<\/h3>\n<ul>\n<li><strong>Lo\u1ea1i gio\u0103ng:<\/strong> C\u00e1c lo\u1ea1i gio\u0103ng kh\u00e1c nhau \u0111\u00f2i h\u1ecfi c\u00e1c m\u1ee9c l\u1ef1c n\u00e9n kh\u00e1c nhau<\/li>\n<li><strong>Ch\u1ea5t li\u1ec7u bu-l\u00f4ng:<\/strong> Ti\u00eau chu\u1ea9n ASTM A193 B7 v\u00e0 B16 c\u00f3 c\u00e1c m\u1ee9c \u0111\u1ed9 b\u1ec1n kh\u00e1c nhau<\/li>\n<li><strong>B\u00f4i tr\u01a1n:<\/strong> Gi\u1ea3m m\u00f4-men xo\u1eafn c\u1ea7n thi\u1ebft xu\u1ed1ng 20\u2013251 TP3T<\/li>\n<li><strong>Nhi\u1ec7t \u0111\u1ed9:<\/strong> C\u00f3 th\u1ec3 c\u1ea7n ph\u1ea3i si\u1ebft ch\u1eb7t khi n\u00f3ng trong \u0111i\u1ec1u ki\u1ec7n l\u00e0m vi\u1ec7c \u1edf nhi\u1ec7t \u0111\u1ed9 cao<\/li>\n<li><strong>Si\u1ebft l\u1ea1i m\u00f4-men xo\u1eafn:<\/strong> C\u1ea7n xem x\u00e9t vi\u1ec7c si\u1ebft l\u1ea1i bu-l\u00f4ng sau c\u00e1c chu k\u1ef3 nhi\u1ec7t<\/li>\n<\/ul>\n<h3>Nh\u1eefng sai l\u1ea7m th\u01b0\u1eddng g\u1eb7p c\u1ea7n tr\u00e1nh<\/h3>\n<ul>\n<li>S\u1eed d\u1ee5ng c\u1edd l\u00ea t\u00e1c \u0111\u1ed9ng m\u00e0 kh\u00f4ng hi\u1ec7u chu\u1ea9n<\/li>\n<li>V\u1eb7n theo h\u00ecnh tr\u00f2n thay v\u00ec h\u00ecnh sao<\/li>\n<li>B\u1ecf qua quy tr\u00ecnh si\u1ebft l\u1ef1c nhi\u1ec1u b\u01b0\u1edbc<\/li>\n<li>T\u00e1i s\u1eed d\u1ee5ng bu-l\u00f4ng b\u1ecb h\u01b0 h\u1ecfng ho\u1eb7c b\u1ecb gi\u00e3n<\/li>\n<li>Kh\u00f4ng tu\u00e2n th\u1ee7 c\u00e1c khuy\u1ebfn ngh\u1ecb v\u1ec1 m\u00f4-men xo\u1eafn c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t gio\u0103ng<\/li>\n<\/ul>\n<p>Vi\u1ec7c si\u1ebft bu-l\u00f4ng \u0111\u00fang l\u1ef1c xo\u1eafn l\u00e0 y\u1ebfu t\u1ed1 quan tr\u1ecdng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o c\u00e1c m\u1ed1i n\u1ed1i m\u1eb7t b\u00edch kh\u00f4ng b\u1ecb r\u00f2 r\u1ec9. Lu\u00f4n tu\u00e2n th\u1ee7 c\u00e1c quy tr\u00ecnh \u0111\u00e3 \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp v\u00e0 s\u1eed d\u1ee5ng c\u00e1c d\u1ee5ng c\u1ee5 si\u1ebft bu-l\u00f4ng \u0111\u00e3 \u0111\u01b0\u1ee3c hi\u1ec7u chu\u1ea9n.<\/p>\n<p><strong>WhatsApp:<\/strong>\u00a0+86-18658777855<br \/>\n<strong>Email:<\/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>Proper Flange Bolt Torquing Guide Correct bolt torque is critical for achieving leak-free flange joints. Under-torquing causes gasket blowout, while over-torquing can damage gaskets or warp flange faces. Why Bolt Torque Matters Ensures uniform gasket compression Prevents flange leakage under operating conditions Compensates for gasket creep and relaxation Maintains joint integrity during thermal cycling Class [&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":[87,66,88,72],"class_list":["post-1026","post","type-post","status-publish","format-standard","hentry","category-blog","tag-bolt-torque","tag-flange","tag-gasket","tag-rating"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.songhaiflange.com\/vi\/wp-json\/wp\/v2\/posts\/1026","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.songhaiflange.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.songhaiflange.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.songhaiflange.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.songhaiflange.com\/vi\/wp-json\/wp\/v2\/comments?post=1026"}],"version-history":[{"count":2,"href":"https:\/\/www.songhaiflange.com\/vi\/wp-json\/wp\/v2\/posts\/1026\/revisions"}],"predecessor-version":[{"id":1035,"href":"https:\/\/www.songhaiflange.com\/vi\/wp-json\/wp\/v2\/posts\/1026\/revisions\/1035"}],"wp:attachment":[{"href":"https:\/\/www.songhaiflange.com\/vi\/wp-json\/wp\/v2\/media?parent=1026"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.songhaiflange.com\/vi\/wp-json\/wp\/v2\/categories?post=1026"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.songhaiflange.com\/vi\/wp-json\/wp\/v2\/tags?post=1026"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}