{"id":14247,"date":"2025-11-17T10:20:08","date_gmt":"2025-11-17T02:20:08","guid":{"rendered":"https:\/\/www.xintaivalves.com\/?p=14247"},"modified":"2025-12-02T10:32:27","modified_gmt":"2025-12-02T02:32:27","slug":"ansi-flange-pressure-ratings-guide","status":"publish","type":"post","link":"https:\/\/www.xintaivalves.com\/vi\/blog\/ansi-flange-pressure-ratings-guide\/","title":{"rendered":"C\u00e1ch \u0111\u1ecdc bi\u1ec3u \u0111\u1ed3 \u0111\u1ecbnh m\u1ee9c \u00e1p su\u1ea5t m\u1eb7t b\u00edch ANSI"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_86 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">M\u1ee5c l\u1ee5c<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Chuy\u1ec3n \u0111\u1ed5i m\u1ee5c l\u1ee5c\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Chuy\u1ec3n \u0111\u1ed5i<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.xintaivalves.com\/vi\/blog\/ansi-flange-pressure-ratings-guide\/#Why_ANSI_Flange_Pressure_Ratings_Matter\" >T\u1ea1i sao x\u1ebfp h\u1ea1ng \u00e1p su\u1ea5t m\u1eb7t b\u00edch ANSI l\u1ea1i quan tr\u1ecdng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.xintaivalves.com\/vi\/blog\/ansi-flange-pressure-ratings-guide\/#What_ANSI_Ratings_Actually_Represent\" >X\u1ebfp h\u1ea1ng ANSI th\u1ef1c s\u1ef1 \u0111\u1ea1i di\u1ec7n cho \u0111i\u1ec1u g\u00ec<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.xintaivalves.com\/vi\/blog\/ansi-flange-pressure-ratings-guide\/#The_Relationship_Between_Temperature_and_Pressure\" >M\u1ed1i quan h\u1ec7 gi\u1eefa nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u00e1p su\u1ea5t<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.xintaivalves.com\/vi\/blog\/ansi-flange-pressure-ratings-guide\/#Flange_Classes_Explained\" >Gi\u1ea3i th\u00edch v\u1ec1 c\u00e1c l\u1edbp m\u1eb7t b\u00edch<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.xintaivalves.com\/vi\/blog\/ansi-flange-pressure-ratings-guide\/#How_To_Read_the_Flange_Pressure_Chart\" >C\u00e1ch \u0111\u1ecdc bi\u1ec3u \u0111\u1ed3 \u00e1p su\u1ea5t m\u1eb7t b\u00edch<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.xintaivalves.com\/vi\/blog\/ansi-flange-pressure-ratings-guide\/#Step_1_Identify_the_Flange_Material\" >B\u01b0\u1edbc 1. X\u00e1c \u0111\u1ecbnh v\u1eadt li\u1ec7u m\u1eb7t b\u00edch<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.xintaivalves.com\/vi\/blog\/ansi-flange-pressure-ratings-guide\/#Step_2_Determine_the_Operating_Temperature\" >B\u01b0\u1edbc 2. X\u00e1c \u0111\u1ecbnh nhi\u1ec7t \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.xintaivalves.com\/vi\/blog\/ansi-flange-pressure-ratings-guide\/#Step_3_Match_the_Flange_Class\" >B\u01b0\u1edbc 3. Ph\u00f9 h\u1ee3p v\u1edbi l\u1edbp m\u1eb7t b\u00edch<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.xintaivalves.com\/vi\/blog\/ansi-flange-pressure-ratings-guide\/#Step_4_Use_the_Lowest_Value_When_Unsure\" >B\u01b0\u1edbc 4. S\u1eed d\u1ee5ng gi\u00e1 tr\u1ecb th\u1ea5p nh\u1ea5t khi kh\u00f4ng ch\u1eafc ch\u1eafn<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.xintaivalves.com\/vi\/blog\/ansi-flange-pressure-ratings-guide\/#Practical_Example_of_Using_the_Chart\" >V\u00ed d\u1ee5 th\u1ef1c t\u1ebf v\u1ec1 vi\u1ec7c s\u1eed d\u1ee5ng bi\u1ec3u \u0111\u1ed3<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.xintaivalves.com\/vi\/blog\/ansi-flange-pressure-ratings-guide\/#Common_Mistakes_When_Reading_ANSI_Ratings\" >Nh\u1eefng sai l\u1ea7m th\u01b0\u1eddng g\u1eb7p khi \u0111\u1ecdc x\u1ebfp h\u1ea1ng ANSI<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.xintaivalves.com\/vi\/blog\/ansi-flange-pressure-ratings-guide\/#Assuming_Class_Numbers_Represent_Pressure\" >Gi\u1ea3 s\u1eed s\u1ed1 l\u1edbp \u0111\u1ea1i di\u1ec7n cho \u00e1p l\u1ef1c<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.xintaivalves.com\/vi\/blog\/ansi-flange-pressure-ratings-guide\/#Ignoring_Temperature_Changes\" >B\u1ecf qua s\u1ef1 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.xintaivalves.com\/vi\/blog\/ansi-flange-pressure-ratings-guide\/#Not_Considering_Material_Differences\" >Kh\u00f4ng xem x\u00e9t s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 v\u1eadt ch\u1ea5t<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/www.xintaivalves.com\/vi\/blog\/ansi-flange-pressure-ratings-guide\/#Choosing_the_Right_Flange_Class_for_Your_System\" >Ch\u1ecdn lo\u1ea1i m\u1eb7t b\u00edch ph\u00f9 h\u1ee3p cho h\u1ec7 th\u1ed1ng c\u1ee7a b\u1ea1n<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/www.xintaivalves.com\/vi\/blog\/ansi-flange-pressure-ratings-guide\/#Consider_the_Full_Operating_Profile\" >Xem x\u00e9t to\u00e0n b\u1ed9 h\u1ed3 s\u01a1 ho\u1ea1t \u0111\u1ed9ng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/www.xintaivalves.com\/vi\/blog\/ansi-flange-pressure-ratings-guide\/#Evaluate_Fluid_Type_and_Corrosion_Exposure\" >\u0110\u00e1nh gi\u00e1 lo\u1ea1i ch\u1ea5t l\u1ecfng v\u00e0 m\u1ee9c \u0111\u1ed9 \u0103n m\u00f2n<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/www.xintaivalves.com\/vi\/blog\/ansi-flange-pressure-ratings-guide\/#Consult_Engineers_for_High-Risk_Applications\" >Tham kh\u1ea3o \u00fd ki\u1ebfn k\u1ef9 s\u01b0 cho c\u00e1c \u1ee9ng d\u1ee5ng c\u00f3 r\u1ee7i ro cao<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/www.xintaivalves.com\/vi\/blog\/ansi-flange-pressure-ratings-guide\/#Final_Thoughts_Understanding_ANSI_Flange_Pressure_Ratings_Chart\" >Suy ngh\u0129 cu\u1ed1i c\u00f9ng: Hi\u1ec3u v\u1ec1 bi\u1ec3u \u0111\u1ed3 \u0111\u1ecbnh m\u1ee9c \u00e1p su\u1ea5t m\u1eb7t b\u00edch ANSI<\/a><\/li><\/ul><\/nav><\/div>\n\n<p class=\"wp-block-paragraph\">Hi\u1ec3u bi\u1ebft <a href=\"https:\/\/www.xintaivalves.com\/vi\/blog\/flanged-gate-valve\/gate-valve-flange-dimensions-complete-guide\/\" target=\"_blank\" rel=\"noreferrer noopener\">X\u1ebfp h\u1ea1ng \u00e1p su\u1ea5t m\u1eb7t b\u00edch ANSI<\/a> l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft v\u00ec bi\u1ec3u \u0111\u1ed3 cho b\u1ea1n bi\u1ebft ch\u00ednh x\u00e1c \u00e1p su\u1ea5t m\u00e0 m\u1eb7t b\u00edch c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c \u1edf c\u00e1c nhi\u1ec7t \u0111\u1ed9 kh\u00e1c nhau.\u00a0<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Th\u00f4ng tin n\u00e0y gi\u00fap b\u1ea1n ch\u1ecdn \u0111\u00fang lo\u1ea1i m\u1eb7t b\u00edch cho h\u1ec7 th\u1ed1ng c\u1ee7a m\u00ecnh v\u00e0 tr\u00e1nh c\u00e1c h\u1ecfng h\u00f3c do \u00e1p su\u1ea5t qu\u00e1 cao ho\u1eb7c s\u1eed d\u1ee5ng v\u1eadt li\u1ec7u kh\u00f4ng \u0111\u00fang c\u00e1ch.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Why_ANSI_Flange_Pressure_Ratings_Matter\"><\/span>T\u1ea1i sao x\u1ebfp h\u1ea1ng \u00e1p su\u1ea5t m\u1eb7t b\u00edch ANSI l\u1ea1i quan tr\u1ecdng<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">X\u1ebfp h\u1ea1ng \u00e1p su\u1ea5t m\u1eb7t b\u00edch ANSI <a href=\"https:\/\/www.xintaivalves.com\/vi\/advantages\/\" target=\"_blank\" rel=\"noreferrer noopener\">h\u01b0\u1edbng d\u1eabn k\u1ef9 s\u01b0, ng\u01b0\u1eddi mua v\u00e0 nh\u00f3m b\u1ea3o tr\u00ec<\/a> trong vi\u1ec7c l\u1ef1a ch\u1ecdn m\u1eb7t b\u00edch ph\u00f9 h\u1ee3p v\u1edbi gi\u1edbi h\u1ea1n v\u1eadn h\u00e0nh c\u1ee7a \u0111\u01b0\u1eddng \u1ed1ng.\u00a0<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00ec kh\u1ea3 n\u0103ng ch\u1ecbu \u00e1p su\u1ea5t gi\u1ea3m khi nhi\u1ec7t \u0111\u1ed9 t\u0103ng n\u00ean bi\u1ec3u \u0111\u1ed3 \u00e1p su\u1ea5t m\u1eb7t b\u00edch tr\u1edf th\u00e0nh t\u00e0i li\u1ec7u tham kh\u1ea3o quan tr\u1ecdng cho thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng an to\u00e0n v\u00e0 hi\u1ec7u qu\u1ea3.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu b\u1ea1n bi\u1ebft c\u00e1ch di\u1ec5n gi\u1ea3i c\u00e1c con s\u1ed1, b\u1ea1n c\u00f3 th\u1ec3 ch\u1ecdn ph\u1ee5 ki\u1ec7n ho\u1ea1t \u0111\u1ed9ng \u0111\u00e1ng tin c\u1eady trong m\u00f4i tr\u01b0\u1eddng v\u00e0 \u0111i\u1ec1u ki\u1ec7n m\u00e0 h\u1ec7 th\u1ed1ng c\u1ee7a b\u1ea1n y\u00eau c\u1ea7u.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_ANSI_Ratings_Actually_Represent\"><\/span>X\u1ebfp h\u1ea1ng ANSI th\u1ef1c s\u1ef1 \u0111\u1ea1i di\u1ec7n cho \u0111i\u1ec1u g\u00ec<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"The_Relationship_Between_Temperature_and_Pressure\"><\/span>M\u1ed1i quan h\u1ec7 gi\u1eefa nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u00e1p su\u1ea5t<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1ch t\u1ed1t nh\u1ea5t \u0111\u1ec3 hi\u1ec3u x\u1ebfp h\u1ea1ng l\u1edbp m\u1eb7t b\u00edch l\u00e0 xem ch\u00fang nh\u01b0 \u201c<em>gi\u1edbi h\u1ea1n \u00e1p su\u1ea5t thay \u0111\u1ed5i khi nhi\u1ec7t \u0111\u1ed9 t\u0103ng<\/em>.\u201d&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed7i v\u1eadt li\u1ec7u, t\u1eeb th\u00e9p cacbon \u0111\u1ebfn th\u00e9p kh\u00f4ng g\u1ec9, \u0111\u1ec1u ph\u1ea3n \u1ee9ng v\u1edbi nhi\u1ec7t theo nh\u1eefng c\u00e1ch kh\u00e1c nhau.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Khi nhi\u1ec7t \u0111\u1ed9 t\u0103ng, kim lo\u1ea1i s\u1ebd y\u1ebfu \u0111i m\u1ed9t ch\u00fat, ngh\u0129a l\u00e0 \u00e1p su\u1ea5t m\u00e0 n\u00f3 c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c ph\u1ea3i gi\u1ea3m \u0111i.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Bi\u1ec3u \u0111\u1ed3 \u0111\u1ecbnh m\u1ee9c \u00e1p su\u1ea5t m\u1eb7t b\u00edch ANSI cho th\u1ea5y r\u00f5 s\u1ef1 gi\u1ea3m n\u00e0y b\u1eb1ng c\u00e1ch li\u1ec7t k\u00ea \u00e1p su\u1ea5t t\u1ed1i \u0111a cho ph\u00e9p t\u1ea1i m\u1ed7i \u0111i\u1ec3m nhi\u1ec7t \u0111\u1ed9.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Flange_Classes_Explained\"><\/span>Gi\u1ea3i th\u00edch v\u1ec1 c\u00e1c l\u1edbp m\u1eb7t b\u00edch<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c l\u1edbp ph\u1ed5 bi\u1ebfn m\u00e0 b\u1ea1n s\u1ebd g\u1eb7p bao g\u1ed3m L\u1edbp 150, 300, 400, 600, 900, 1500 v\u00e0 2500.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Nh\u1eefng con s\u1ed1 n\u00e0y kh\u00f4ng bi\u1ec3u th\u1ecb tr\u1ef1c ti\u1ebfp \u00e1p su\u1ea5t. Thay v\u00e0o \u0111\u00f3, ch\u00fang bi\u1ec3u th\u1ecb c\u00e1c nh\u00f3m m\u1eb7t b\u00edch c\u00f3 d\u1ea3i c\u01b0\u1eddng \u0111\u1ed9 t\u01b0\u01a1ng t\u1ef1 nhau.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1eb7t b\u00edch lo\u1ea1i 300 b\u1ec1n h\u01a1n m\u1eb7t b\u00edch lo\u1ea1i 150, nh\u01b0ng \u00e1p su\u1ea5t ch\u00ednh x\u00e1c m\u00e0 n\u00f3 c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c v\u1eabn ph\u1ee5 thu\u1ed9c v\u00e0o bi\u1ec3u \u0111\u1ed3 \u00e1p su\u1ea5t c\u1ee7a v\u1eadt li\u1ec7u \u0111\u00f3.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_To_Read_the_Flange_Pressure_Chart\"><\/span>C\u00e1ch \u0111\u1ecdc bi\u1ec3u \u0111\u1ed3 \u00e1p su\u1ea5t m\u1eb7t b\u00edch<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Step_1_Identify_the_Flange_Material\"><\/span>B\u01b0\u1edbc 1. X\u00e1c \u0111\u1ecbnh v\u1eadt li\u1ec7u m\u1eb7t b\u00edch<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Tr\u01b0\u1edbc h\u1ebft, b\u1ea1n c\u1ea7n bi\u1ebft ch\u00ednh x\u00e1c v\u1eadt li\u1ec7u m\u1eb7t b\u00edch.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Bi\u1ec3u \u0111\u1ed3 \u00e1p su\u1ea5t lu\u00f4n ph\u1ee5 thu\u1ed9c v\u00e0o t\u1eebng v\u1eadt li\u1ec7u v\u00ec m\u1ed7i h\u1ee3p kim c\u00f3 kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t \u0111\u1ed9 kh\u00e1c nhau.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00ed d\u1ee5, m\u1eb7t b\u00edch th\u00e9p cacbon lo\u1ea1i 150 s\u1ebd kh\u00f4ng c\u00f3 c\u00f9ng gi\u1edbi h\u1ea1n \u00e1p su\u1ea5t nh\u01b0 m\u1eb7t b\u00edch th\u00e9p kh\u00f4ng g\u1ec9 c\u00f9ng lo\u1ea1i.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Step_2_Determine_the_Operating_Temperature\"><\/span>B\u01b0\u1edbc 2. X\u00e1c \u0111\u1ecbnh nhi\u1ec7t \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Khi \u0111\u00e3 bi\u1ebft v\u1eadt li\u1ec7u, h\u00e3y ki\u1ec3m tra nhi\u1ec7t \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng c\u1ee7a \u0111\u01b0\u1eddng \u1ed1ng.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">X\u1ebfp h\u1ea1ng \u00e1p su\u1ea5t m\u1eb7t b\u00edch \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb theo h\u00e0ng t\u01b0\u01a1ng \u1ee9ng v\u1edbi kho\u1ea3ng nhi\u1ec7t \u0111\u1ed9.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">X\u00e1c \u0111\u1ecbnh h\u00e0ng \u0111\u00fang \u0111\u1ec3 t\u00ecm gi\u1edbi h\u1ea1n \u00e1p su\u1ea5t \u1edf nhi\u1ec7t \u0111\u1ed9 c\u1ee5 th\u1ec3 \u0111\u00f3.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Step_3_Match_the_Flange_Class\"><\/span>B\u01b0\u1edbc 3. Ph\u00f9 h\u1ee3p v\u1edbi l\u1edbp m\u1eb7t b\u00edch<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ti\u1ebfp theo, h\u00e3y t\u00ecm c\u1ed9t t\u01b0\u01a1ng \u1ee9ng v\u1edbi l\u1edbp m\u1eb7t b\u00edch m\u00e0 b\u1ea1n \u0111ang s\u1eed d\u1ee5ng.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1eb1ng c\u00e1ch so kh\u1edbp h\u00e0ng (nhi\u1ec7t \u0111\u1ed9) v\u1edbi c\u1ed9t (l\u1edbp), b\u1ea1n c\u00f3 th\u1ec3 \u0111\u1ecdc \u0111\u01b0\u1ee3c \u00e1p su\u1ea5t t\u1ed1i \u0111a m\u00e0 m\u1eb7t b\u00edch c\u1ee7a b\u1ea1n c\u00f3 th\u1ec3 x\u1eed l\u00fd an to\u00e0n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Step_4_Use_the_Lowest_Value_When_Unsure\"><\/span>B\u01b0\u1edbc 4. S\u1eed d\u1ee5ng gi\u00e1 tr\u1ecb th\u1ea5p nh\u1ea5t khi kh\u00f4ng ch\u1eafc ch\u1eafn<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu h\u1ec7 th\u1ed1ng c\u1ee7a b\u1ea1n g\u1eb7p ph\u1ea3i s\u1ef1 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9, h\u00e3y lu\u00f4n tham kh\u1ea3o nhi\u1ec7t \u0111\u1ed9 cao nh\u1ea5t m\u00e0 h\u1ec7 th\u1ed1ng c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110i\u1ec1u n\u00e0y \u0111\u1ea3m b\u1ea3o b\u1ea1n ch\u1ecdn \u0111\u01b0\u1ee3c m\u1eb7t b\u00edch c\u00f3 \u0111\u1ee7 kh\u1ea3 n\u0103ng ch\u1ecbu \u00e1p su\u1ea5t ngay c\u1ea3 trong \u0111i\u1ec1u ki\u1ec7n cao \u0111i\u1ec3m.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Khi c\u00f2n nghi ng\u1edd, l\u1ef1a ch\u1ecdn an to\u00e0n h\u01a1n l\u00e0 s\u1eed d\u1ee5ng gi\u00e1 tr\u1ecb \u00e1p su\u1ea5t th\u1ea5p h\u01a1n.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2025\/12\/flange-1024x768.webp\" alt=\"\" class=\"wp-image-14255\" style=\"width:auto;height:300px\" srcset=\"https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2025\/12\/flange-1024x768.webp 1024w, https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2025\/12\/flange-300x225.webp 300w, https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2025\/12\/flange-768x576.webp 768w, https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2025\/12\/flange-16x12.webp 16w, https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2025\/12\/flange.webp 1242w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Practical_Example_of_Using_the_Chart\"><\/span>V\u00ed d\u1ee5 th\u1ef1c t\u1ebf v\u1ec1 vi\u1ec7c s\u1eed d\u1ee5ng bi\u1ec3u \u0111\u1ed3<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">H\u00e3y t\u01b0\u1edfng t\u01b0\u1ee3ng b\u1ea1n \u0111ang \u0111\u00e1nh gi\u00e1 m\u1eb7t b\u00edch th\u00e9p cacbon lo\u1ea1i 300 cho m\u1ed9t h\u1ec7 th\u1ed1ng ho\u1ea1t \u0111\u1ed9ng \u1edf nhi\u1ec7t \u0111\u1ed9 hai tr\u0103m \u0111\u1ed9 C.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Sau khi ki\u1ec3m tra b\u1ea3ng t\u01b0\u01a1ng \u1ee9ng, b\u1ea1n c\u00f3 th\u1ec3 th\u1ea5y r\u1eb1ng gi\u1edbi h\u1ea1n \u00e1p su\u1ea5t \u1edf nhi\u1ec7t \u0111\u1ed9 \u0111\u00f3 th\u1ea5p h\u01a1n \u0111\u00e1ng k\u1ec3 so v\u1edbi nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 ngay c\u1ea3 khi Class 300 c\u00f3 v\u1ebb \u0111\u1ee7 m\u1ea1nh \u1edf \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng xung quanh th\u00ec m\u1ee9c \u0111\u1ecbnh m\u1ee9c nhi\u1ec7t \u0111\u1ed9 cao th\u1ea5p h\u01a1n c\u00f3 th\u1ec3 y\u00eau c\u1ea7u b\u1ea1n ph\u1ea3i ch\u1ecdn lo\u1ea1i m\u1eb7t b\u00edch cao h\u01a1n.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00e2y l\u00e0 t\u00ecnh hu\u1ed1ng th\u01b0\u1eddng g\u1eb7p trong c\u00e1c \u0111\u01b0\u1eddng \u1ed1ng h\u01a1i n\u01b0\u1edbc, nh\u00e0 m\u00e1y h\u00f3a ch\u1ea5t v\u00e0 d\u1ecbch v\u1ee5 l\u1ecdc d\u1ea7u.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Common_Mistakes_When_Reading_ANSI_Ratings\"><\/span>Nh\u1eefng sai l\u1ea7m th\u01b0\u1eddng g\u1eb7p khi \u0111\u1ecdc x\u1ebfp h\u1ea1ng ANSI<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Assuming_Class_Numbers_Represent_Pressure\"><\/span>Gi\u1ea3 s\u1eed s\u1ed1 l\u1edbp \u0111\u1ea1i di\u1ec7n cho \u00e1p l\u1ef1c<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t hi\u1ec3u l\u1ea7m th\u01b0\u1eddng g\u1eb7p l\u00e0 cho r\u1eb1ng C\u1ea5p 150 b\u1eb1ng m\u1ed9t tr\u0103m n\u0103m m\u01b0\u01a1i psi.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110i\u1ec1u n\u00e0y kh\u00f4ng \u0111\u00fang. S\u1ed1 l\u1edbp ch\u1ec9 l\u00e0 m\u1ed9t danh m\u1ee5c ch\u1ee9 kh\u00f4ng ph\u1ea3i l\u00e0 gi\u00e1 tr\u1ecb \u00e1p su\u1ea5t th\u1ef1c t\u1ebf.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Bi\u1ec3u \u0111\u1ed3 \u00e1p su\u1ea5t m\u1eb7t b\u00edch l\u00e0 t\u00e0i li\u1ec7u tham kh\u1ea3o \u0111\u00e1ng tin c\u1eady duy nh\u1ea5t \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh gi\u1edbi h\u1ea1n ch\u00ednh x\u00e1c.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Ignoring_Temperature_Changes\"><\/span>B\u1ecf qua s\u1ef1 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t s\u1ed1 ng\u01b0\u1eddi d\u00f9ng ch\u1ec9 ki\u1ec3m tra m\u1ee9c \u00e1p su\u1ea5t \u1edf nhi\u1ec7t \u0111\u1ed9 b\u00ecnh th\u01b0\u1eddng v\u00e0 qu\u00ean ki\u1ec3m tra \u1edf nhi\u1ec7t \u0111\u1ed9 cao.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Sai l\u1ea7m n\u00e0y c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn <a href=\"https:\/\/www.xintaivalves.com\/vi\/blog\/understanding-industrial-valve-connections-and-fittings-types\/\" target=\"_blank\" rel=\"noreferrer noopener\">h\u1ecfng mi\u1ebfng \u0111\u1ec7m ho\u1eb7c bi\u1ebfn d\u1ea1ng m\u1eb7t b\u00edch<\/a>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Not_Considering_Material_Differences\"><\/span>Kh\u00f4ng xem x\u00e9t s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 v\u1eadt ch\u1ea5t<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Hai m\u1eb7t b\u00edch c\u00f3 c\u00f9ng c\u1ea5p \u0111\u00e1nh gi\u00e1 nh\u01b0ng \u0111\u01b0\u1ee3c l\u00e0m t\u1eeb v\u1eadt li\u1ec7u kh\u00e1c nhau c\u00f3 th\u1ec3 c\u00f3 m\u1ee9c hi\u1ec7u su\u1ea5t ho\u00e0n to\u00e0n kh\u00e1c nhau.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00e2y l\u00e0 l\u00fd do t\u1ea1i sao vi\u1ec7c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u lu\u00f4n ph\u1ea3i \u0111\u01b0\u1ee3c c\u00e2n nh\u1eafc khi \u0111\u1ecdc \u0111\u1ecbnh m\u1ee9c \u00e1p su\u1ea5t m\u1eb7t b\u00edch ANSI.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Choosing_the_Right_Flange_Class_for_Your_System\"><\/span>Ch\u1ecdn lo\u1ea1i m\u1eb7t b\u00edch ph\u00f9 h\u1ee3p cho h\u1ec7 th\u1ed1ng c\u1ee7a b\u1ea1n<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Consider_the_Full_Operating_Profile\"><\/span>Xem x\u00e9t to\u00e0n b\u1ed9 h\u1ed3 s\u01a1 ho\u1ea1t \u0111\u1ed9ng<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 l\u1ef1a ch\u1ecdn \u0111\u00fang, h\u00e3y ngh\u0129 xa h\u01a1n c\u00e1c ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh. Bao g\u1ed3m c\u1ea3 kh\u1edfi \u0111\u1ed9ng, t\u1eaft m\u00e1y, chu k\u1ef3 nhi\u1ec7t v\u00e0 c\u00e1c \u0111\u1ed9t bi\u1ebfn \u00e1p su\u1ea5t c\u00f3 th\u1ec3 x\u1ea3y ra.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Evaluate_Fluid_Type_and_Corrosion_Exposure\"><\/span>\u0110\u00e1nh gi\u00e1 lo\u1ea1i ch\u1ea5t l\u1ecfng v\u00e0 m\u1ee9c \u0111\u1ed9 \u0103n m\u00f2n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ch\u1ea5t l\u1ecfng c\u00f3 t\u00ednh \u0103n m\u00f2n ho\u1eb7c m\u1ea1nh c\u00f3 th\u1ec3 l\u00e0m suy y\u1ebfu m\u1ed9t s\u1ed1 v\u1eadt li\u1ec7u nhanh h\u01a1n, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t th\u1ef1c t\u1ebf ngay c\u1ea3 khi m\u1ee9c \u00e1p su\u1ea5t \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 l\u00e0 ph\u00f9 h\u1ee3p tr\u00ean l\u00fd thuy\u1ebft.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Consult_Engineers_for_High-Risk_Applications\"><\/span>Tham kh\u1ea3o \u00fd ki\u1ebfn k\u1ef9 s\u01b0 cho c\u00e1c \u1ee9ng d\u1ee5ng c\u00f3 r\u1ee7i ro cao<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed1i v\u1edbi h\u01a1i n\u01b0\u1edbc nhi\u1ec7t \u0111\u1ed9 cao, kh\u00ed \u00e1p su\u1ea5t cao ho\u1eb7c \u0111\u01b0\u1eddng d\u00e2y an to\u00e0n quan tr\u1ecdng, c\u1ea7n c\u00f3 s\u1ef1 can thi\u1ec7p c\u1ee7a k\u1ef9 thu\u1eadt \u0111\u1ec3 tr\u00e1nh t\u00ednh to\u00e1n sai.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Final_Thoughts_Understanding_ANSI_Flange_Pressure_Ratings_Chart\"><\/span>Suy ngh\u0129 cu\u1ed1i c\u00f9ng: Hi\u1ec3u v\u1ec1 bi\u1ec3u \u0111\u1ed3 \u0111\u1ecbnh m\u1ee9c \u00e1p su\u1ea5t m\u1eb7t b\u00edch ANSI<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c \u0111\u1ecdc \u0111\u1ecbnh m\u1ee9c \u00e1p su\u1ea5t m\u1eb7t b\u00edch ANSI s\u1ebd tr\u1edf n\u00ean d\u1ec5 d\u00e0ng h\u01a1n khi b\u1ea1n hi\u1ec3u \u0111\u01b0\u1ee3c c\u00e1ch nhi\u1ec7t \u0111\u1ed9, v\u1eadt li\u1ec7u v\u00e0 c\u1ea5p m\u1eb7t b\u00edch ho\u1ea1t \u0111\u1ed9ng c\u00f9ng nhau.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Bi\u1ec3u \u0111\u1ed3 \u00e1p su\u1ea5t m\u1eb7t b\u00edch l\u00e0 c\u00f4ng c\u1ee5 ch\u00ednh \u0111\u1ec3 x\u00e1c nh\u1eadn xem m\u1eb7t b\u00edch c\u1ee5 th\u1ec3 c\u00f3 th\u1ec3 x\u1eed l\u00fd \u0111\u01b0\u1ee3c c\u00e1c \u0111i\u1ec1u ki\u1ec7n h\u1ec7 th\u1ed1ng c\u1ee7a b\u1ea1n hay kh\u00f4ng.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Khi k\u1ebft h\u1ee3p v\u1edbi t\u00ednh to\u00e1n thi\u1ebft k\u1ebf v\u00e0 th\u00f3i quen l\u1ef1a ch\u1ecdn ph\u00f9 h\u1ee3p, n\u00f3 s\u1ebd gi\u00fap \u0111\u1ea3m b\u1ea3o an to\u00e0n, hi\u1ec7u qu\u1ea3 v\u00e0 \u0111\u1ed9 tin c\u1eady l\u00e2u d\u00e0i.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/www.xintaivalves.com\/vi\/product\/\" target=\"_blank\" rel=\" noreferrer noopener\"><img decoding=\"async\" width=\"1024\" height=\"371\" src=\"https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2025\/06\/China-Industrial-Valve-Manufacturer-xintai-valves-product-2-1024x371.webp\" alt=\"van h\u00e0ng \u0111\u1ea7u trong ng\u00e0nh nh\u00e0 s\u1ea3n xu\u1ea5t van XINTAI\" class=\"wp-image-9208\" srcset=\"https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2025\/06\/China-Industrial-Valve-Manufacturer-xintai-valves-product-2-1024x371.webp 1024w, https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2025\/06\/China-Industrial-Valve-Manufacturer-xintai-valves-product-2-300x109.webp 300w, https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2025\/06\/China-Industrial-Valve-Manufacturer-xintai-valves-product-2-768x278.webp 768w, https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2025\/06\/China-Industrial-Valve-Manufacturer-xintai-valves-product-2-1536x556.webp 1536w, https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2025\/06\/China-Industrial-Valve-Manufacturer-xintai-valves-product-2-18x7.webp 18w, https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2025\/06\/China-Industrial-Valve-Manufacturer-xintai-valves-product-2.webp 1550w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>","protected":false},"excerpt":{"rendered":"<p>Understanding ANSI flange pressure ratings is essential because the chart tells you exactly how much pressure a flange can safely handle at different temperatures.\u00a0 This information helps you choose the right flange class for your system and avoid failures caused by overpressure or the misuse of materials. Why ANSI Flange Pressure Ratings Matter ANSI flange [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":14254,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-14247","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"_links":{"self":[{"href":"https:\/\/www.xintaivalves.com\/vi\/wp-json\/wp\/v2\/posts\/14247","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.xintaivalves.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.xintaivalves.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.xintaivalves.com\/vi\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.xintaivalves.com\/vi\/wp-json\/wp\/v2\/comments?post=14247"}],"version-history":[{"count":2,"href":"https:\/\/www.xintaivalves.com\/vi\/wp-json\/wp\/v2\/posts\/14247\/revisions"}],"predecessor-version":[{"id":14256,"href":"https:\/\/www.xintaivalves.com\/vi\/wp-json\/wp\/v2\/posts\/14247\/revisions\/14256"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.xintaivalves.com\/vi\/wp-json\/wp\/v2\/media\/14254"}],"wp:attachment":[{"href":"https:\/\/www.xintaivalves.com\/vi\/wp-json\/wp\/v2\/media?parent=14247"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.xintaivalves.com\/vi\/wp-json\/wp\/v2\/categories?post=14247"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.xintaivalves.com\/vi\/wp-json\/wp\/v2\/tags?post=14247"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}