{"id":8308,"date":"2026-08-05T09:30:00","date_gmt":"2026-08-05T09:30:00","guid":{"rendered":"https:\/\/www.desopipe.com\/?p=8308"},"modified":"2026-08-07T07:31:27","modified_gmt":"2026-08-07T07:31:27","slug":"buried-ppr-pipe-thermal-expansion","status":"publish","type":"post","link":"https:\/\/www.desopipe.com\/vi\/blog\/ppr-pipe\/buried-ppr-pipe-thermal-expansion\/","title":{"rendered":"\u1ed0ng PPR Ch\u00f4n Ng\u1ea7m: C\u00e1ch X\u1eed L\u00fd S\u1ef1 Gi\u00e3n N\u1edf V\u00ec Nhi\u1ec7t D\u01b0\u1edbi L\u00f2ng \u0110\u1ea5t"},"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.desopipe.com\/vi\/blog\/ppr-pipe\/buried-ppr-pipe-thermal-expansion\/#Why_Underground_Installation_Changes_Expansion_Behavior\" >T\u1ea1i sao l\u1eafp \u0111\u1eb7t ng\u1ea7m l\u00e0m thay \u0111\u1ed5i h\u00e0nh vi gi\u00e3n n\u1edf<\/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.desopipe.com\/vi\/blog\/ppr-pipe\/buried-ppr-pipe-thermal-expansion\/#Sand_Bedding_and_Backfill_Best_Practices\" >Th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t v\u1ec1 l\u1edbp \u0111\u1ec7m v\u00e0 l\u1ea5p c\u00e1t<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.desopipe.com\/vi\/blog\/ppr-pipe\/buried-ppr-pipe-thermal-expansion\/#Expansion_Loops_for_Buried_Lines\" >V\u00f2ng gi\u00e3n n\u1edf cho \u0111\u01b0\u1eddng \u1ed1ng ch\u00f4n ng\u1ea7m<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.desopipe.com\/vi\/blog\/ppr-pipe\/buried-ppr-pipe-thermal-expansion\/#Case_Study_Underground_Water_Systems\" >Nghi\u00ean c\u1ee9u \u0111i\u1ec3n h\u00ecnh: H\u1ec7 th\u1ed1ng c\u1ea5p n\u01b0\u1edbc ng\u1ea7m<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.desopipe.com\/vi\/blog\/ppr-pipe\/buried-ppr-pipe-thermal-expansion\/#Troubleshooting_and_Commissioning_Logic\" >Logic kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 v\u00e0 v\u1eadn h\u00e0nh th\u1eed<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.desopipe.com\/vi\/blog\/ppr-pipe\/buried-ppr-pipe-thermal-expansion\/#Product_and_Manufacturer_Advantages\" >\u01afu \u0111i\u1ec3m s\u1ea3n ph\u1ea9m v\u00e0 nh\u00e0 s\u1ea3n xu\u1ea5t<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.desopipe.com\/vi\/blog\/ppr-pipe\/buried-ppr-pipe-thermal-expansion\/#Conclusion\" >Ph\u1ea7n k\u1ebft lu\u1eadn<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.desopipe.com\/vi\/blog\/ppr-pipe\/buried-ppr-pipe-thermal-expansion\/#FAQ\" >C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.desopipe.com\/vi\/blog\/ppr-pipe\/buried-ppr-pipe-thermal-expansion\/#How_do_you_define_thermal_expansion_in_buried_PPR_systems\" >B\u1ea1n \u0111\u1ecbnh ngh\u0129a s\u1ef1 gi\u00e3n n\u1edf nhi\u1ec7t trong h\u1ec7 th\u1ed1ng PPR ch\u00f4n ng\u1ea7m nh\u01b0 th\u1ebf n\u00e0o?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.desopipe.com\/vi\/blog\/ppr-pipe\/buried-ppr-pipe-thermal-expansion\/#Why_does_my_buried_pipe_keep_shearing_at_the_riser_transition\" >T\u1ea1i sao \u1ed1ng ch\u00f4n ng\u1ea7m c\u1ee7a t\u00f4i li\u00ean t\u1ee5c b\u1ecb g\u00e3y t\u1ea1i \u0111i\u1ec3m chuy\u1ec3n ti\u1ebfp \u1ed1ng \u0111\u1ee9ng?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.desopipe.com\/vi\/blog\/ppr-pipe\/buried-ppr-pipe-thermal-expansion\/#What_is_the_best_way_to_backfill_a_PPR_trench\" >C\u00e1ch t\u1ed1t nh\u1ea5t \u0111\u1ec3 l\u1ea5p r\u00e3nh \u1ed1ng PPR l\u00e0 g\u00ec?<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c qu\u1ea3n l\u00fd s\u1ef1 gi\u00e3n n\u1edf c\u1ee7a \u1ed1ng PPR ch\u00f4n ng\u1ea7m n\u00ean bao g\u1ed3m s\u1ef1 k\u1ebft h\u1ee3p c\u1ea9n th\u1eadn gi\u1eefa vi\u1ec7c \u201cu\u1ed1n l\u01b0\u1ee3n\u201d b\u00ean trong r\u00e3nh v\u00e0 s\u1eed d\u1ee5ng c\u00e1t r\u1eddi l\u00e0m l\u1edbp \u0111\u1ec7m \u1ed1ng \u0111\u1ec3 t\u1ea1o \u0111i\u1ec1u ki\u1ec7n cho s\u1ef1 di chuy\u1ec3n t\u1ef1 nhi\u00ean c\u1ee7a \u1ed1ng. B\u1ecf qua \u1ea3nh h\u01b0\u1edfng c\u1ee7a c\u00e1c l\u1ef1c nhi\u1ec7t nh\u01b0 v\u1eady s\u1ebd g\u00e2y \u1ee9ng su\u1ea5t l\u00ean \u1ed1ng, d\u1eabn \u0111\u1ebfn m\u1ecfi m\u1ed1i n\u1ed1i ho\u1eb7c \u1ed1ng b\u1ecb cong v\u00eanh do \u00e1p l\u1ef1c t\u1eeb v\u1eadt li\u1ec7u l\u1ea5p.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c k\u1ef9 s\u01b0 c\u1ea7n nh\u1ea5n m\u1ea1nh thi\u1ebft k\u1ebf cho ph\u00e9p di chuy\u1ec3n ngang c\u1ee7a \u1ed1ng thay v\u00ec c\u1ed1 \u0111\u1ecbnh \u1ed1ng m\u1ed9t c\u00e1ch c\u1ee9ng nh\u1eafc \u0111\u1ec3 \u0111\u00e1p \u1ee9ng l\u1ef1c d\u1ecdc. C\u00e1ch b\u1ed1 tr\u00ed nh\u01b0 v\u1eady gi\u00fap b\u1ea3o v\u1ec7 c\u1ea5u tr\u00fac ph\u00e2n t\u1eed c\u1ee7a c\u00e1c m\u1ed1i n\u1ed1i h\u00e0n nhi\u1ec7t khi v\u1eadn chuy\u1ec3n n\u01b0\u1edbc n\u00f3ng.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Why_Underground_Installation_Changes_Expansion_Behavior\"><\/span><strong>T\u1ea1i sao l\u1eafp \u0111\u1eb7t ng\u1ea7m l\u00e0m thay \u0111\u1ed5i h\u00e0nh vi gi\u00e3n n\u1edf<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ea5t ng\u1ea7m tr\u1edf th\u00e0nh m\u1ed9t r\u00e0ng bu\u1ed9c nh\u1ea5t qu\u00e1n nh\u01b0ng c\u00f3 th\u1ec3 th\u00edch \u1ee9ng, ho\u00e0n to\u00e0n kh\u00e1c v\u1edbi c\u00e1c gi\u00e1 \u0111\u1ee1 tr\u01b0\u1ee3t \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c h\u1ec7 th\u1ed1ng tr\u00ean m\u1eb7t \u0111\u1ea5t. Khi \u01b0\u1edbc t\u00ednh l\u1ef1c gi\u00e3n n\u1edf c\u1ee7a \u1ed1ng PPR ch\u00f4n ng\u1ea7m, gi\u00e1 tr\u1ecb 0,15mm\/m cho m\u1ed7i \u0111\u1ed9 C ch\u00eanh l\u1ec7ch nhi\u1ec7t \u0111\u1ed9 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u1edbi chi\u1ec1u d\u00e0i ch\u1ea1y th\u1eb3ng 100 m\u00e9t v\u00e0 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9 30\u00b0C, s\u1ebd c\u00f3 s\u1ef1 t\u0103ng tr\u01b0\u1edfng tuy\u1ebfn t\u00ednh \u01b0\u1edbc t\u00ednh l\u00e0 450mm c\u1ea7n \u0111\u01b0\u1ee3c truy\u1ec1n \u0111\u1ebfn th\u00e0nh r\u00e3nh. Trong tr\u01b0\u1eddng h\u1ee3p \u0111\u1ea5t b\u1ecb n\u00e9n ch\u1eb7t ho\u1eb7c ch\u1ee9a c\u00e1c h\u1ea1t c\u00f3 c\u1ea1nh s\u1eafc, c\u00e1c l\u1ef1c nh\u01b0 v\u1eady c\u00f3 th\u1ec3 t\u1eadp trung t\u1ea1i c\u00e1c kh\u1edbp khu\u1ef7u.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Theo ti\u00eau chu\u1ea9n ISO 15874-2, t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a h\u1ec7 th\u1ed1ng ph\u1ee5 thu\u1ed9c v\u00e0o kh\u1ea3 n\u0103ng c\u1ee7a v\u1eadt li\u1ec7u ch\u1ecbu \u0111\u01b0\u1ee3c c\u00e1c \u1ee9ng su\u1ea5t b\u00ean trong n\u00e0y m\u00e0 kh\u00f4ng l\u00e0m \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 d\u00e0y th\u00e0nh \u1ed1ng. C\u00e1c chuy\u00ean gia tr\u00e1nh \u0111\u01b0\u1ee3c s\u1ef1 c\u1ed1 b\u1eb1ng c\u00e1ch thi\u1ebft k\u1ebf r\u00e3nh c\u00f3 \u0111\u1ee7 chi\u1ec1u r\u1ed9ng \u0111\u1ec3 \u0111\u00e1p \u1ee9ng s\u1ef1 \u1ed5n \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc c\u1ee7a \u1ed1ng khi n\u00f3 d\u1ecbch chuy\u1ec3n trong c\u00e1c chu k\u1ef3 nhi\u1ec7t.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Sand_Bedding_and_Backfill_Best_Practices\"><\/span><strong>Th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t v\u1ec1 l\u1edbp \u0111\u1ec7m v\u00e0 l\u1ea5p c\u00e1t<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"567\" data-id=\"8310\" src=\"https:\/\/www.desopipe.com\/wp-content\/uploads\/2026\/08\/image-31-1200x567.webp\" alt=\"Cho ph\u00e9p \u1ed1ng di chuy\u1ec3n t\u1ef1 nhi\u00ean. Kh\u00f4ng h\u1ea1n ch\u1ebf s\u1ef1 gi\u00e3n n\u1edf\" class=\"wp-image-8310\" srcset=\"https:\/\/www.desopipe.com\/wp-content\/uploads\/2026\/08\/image-31-1200x567.webp 1200w, https:\/\/www.desopipe.com\/wp-content\/uploads\/2026\/08\/image-31-500x236.webp 500w, https:\/\/www.desopipe.com\/wp-content\/uploads\/2026\/08\/image-31-300x142.webp 300w, https:\/\/www.desopipe.com\/wp-content\/uploads\/2026\/08\/image-31-768x363.webp 768w, https:\/\/www.desopipe.com\/wp-content\/uploads\/2026\/08\/image-31-1536x726.webp 1536w, https:\/\/www.desopipe.com\/wp-content\/uploads\/2026\/08\/image-31-18x9.webp 18w, https:\/\/www.desopipe.com\/wp-content\/uploads\/2026\/08\/image-31-150x71.webp 150w, https:\/\/www.desopipe.com\/wp-content\/uploads\/2026\/08\/image-31-480x227.webp 480w, https:\/\/www.desopipe.com\/wp-content\/uploads\/2026\/08\/image-31-800x378.webp 800w, https:\/\/www.desopipe.com\/wp-content\/uploads\/2026\/08\/image-31.webp 1735w\" sizes=\"auto, (max-width:767px) 480px, (max-width:1200px) 100vw, 1200px\" \/><\/figure>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Hi\u1ec7u qu\u1ea3 c\u00f4ng vi\u1ec7c quan tr\u1ecdng nh\u1ea5t \u0111\u1ed1i v\u1edbi \u0111\u01b0\u1eddng \u1ed1ng ng\u1ea7m l\u00e0 s\u1eed d\u1ee5ng l\u1edbp \u0111\u1ec7m c\u00e1t s\u1ea1ch, t\u1ea1o ra m\u1ed9t n\u1ec1n t\u1ea3ng \u0111\u1ed3ng nh\u1ea5t, ma s\u00e1t th\u1ea5p. \u0110\u1ec3 gi\u1ea3m thi\u1ec3u hi\u1ec7u qu\u1ea3 \u1ee9ng su\u1ea5t gi\u00e3n n\u1edf c\u1ee7a \u1ed1ng PPR ch\u00f4n ng\u1ea7m, ch\u00fang t\u00f4i quy \u0111\u1ecbnh t\u1ed1i thi\u1ec3u 100mm c\u00e1t \u0111\u00e3 r\u1eeda \u0111\u1ec3 ng\u0103n ch\u1eb7n t\u1ea3i tr\u1ecdng \u0111i\u1ec3m t\u1eeb \u0111\u00e1 l\u1edbn.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">S\u1ef1 hi\u1ec7n di\u1ec7n c\u1ee7a c\u00e1t cho ph\u00e9p c\u00f3 kh\u00f4ng gian \"th\u1edf\" cho chuy\u1ec3n \u0111\u1ed9ng ngang, do \u0111\u00f3 \u0111\u1ea3m b\u1ea3o \u1ed1ng s\u1eed d\u1ee5ng \u0111\u1ed9 \u0111\u00e0n h\u1ed3i c\u1ee7a n\u00f3 m\u00e0 kh\u00f4ng \u1edf v\u1ecb tr\u00ed c\u1ee9ng nh\u1eafc v\u00e0 b\u1ecb c\u0103ng th\u1eb3ng. C\u00e1c l\u1edbp c\u00e1t ph\u1ea3i \u0111\u01b0\u1ee3c n\u00e9n ch\u1eb7t, nh\u01b0ng c\u1ea7n c\u00f3 m\u1ed9t s\u1ed1 \u0111\u1ed9 linh ho\u1ea1t g\u1ea7n \u1ed1ng.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th><strong>Giai \u0111o\u1ea1n l\u1eafp \u0111\u1eb7t<\/strong><\/th><th><strong>Y\u00eau c\u1ea7u v\u1eadt li\u1ec7u<\/strong><\/th><th><strong>M\u1ee5c \u0111\u00edch v\u1eadn h\u00e0nh<\/strong><\/th><\/tr><\/thead><tbody><tr><td><strong>L\u1edbp \u0111\u1ec7m n\u1ec1n<\/strong><\/td><td>100mm C\u00e1t s\u1ea1ch (0-5mm)<\/td><td>Ng\u0103n ch\u1eb7n t\u1ea3i tr\u1ecdng \u0111i\u1ec3m v\u00e0 t\u1ea1o \u0111i\u1ec1u ki\u1ec7n cho chuy\u1ec3n \u0111\u1ed9ng vi m\u00f4.<\/td><\/tr><tr><td><strong>L\u1ea5p hai b\u00ean<\/strong><\/td><td>C\u00e1t r\u1eddi \u0111\u1ea7m tay<\/td><td>Cung c\u1ea5p \u201cv\u00f9ng gi\u00e3n n\u1edf\u201d cho \u0111\u1ed9 l\u1ec7ch ngang.<\/td><\/tr><tr><td><strong>L\u1ea5p ban \u0111\u1ea7u<\/strong><\/td><td>\u0110\u1ea5t nguy\u00ean th\u1ed5 (kh\u00f4ng c\u00f3 \u0111\u00e1 &gt; 20 mm)<\/td><td>B\u1ea3o v\u1ec7 \u1ed1ng kh\u1ecfi h\u01b0 h\u1ecfng trong qu\u00e1 tr\u00ecnh l\u1ea5p cu\u1ed1i c\u00f9ng.<\/td><\/tr><tr><td><strong>L\u1ea5p cu\u1ed1i c\u00f9ng<\/strong><\/td><td>V\u1eadt li\u1ec7u l\u1ea5p ti\u00eau chu\u1ea9n<\/td><td>H\u1ed7 tr\u1ee3 giao th\u00f4ng b\u1ec1 m\u1eb7t v\u00e0 cung c\u1ea5p \u0111\u1ed9 s\u00e2u k\u1ebft c\u1ea5u.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">S\u1ef1 tinh t\u1ebf n\u00e0y duy tr\u00ec \u0111\u1ed9 tin c\u1eady l\u00e2u d\u00e0i c\u1ee7a h\u1ec7 th\u1ed1ng b\u1eb1ng c\u00e1ch cho ph\u00e9p \u1ed1ng di chuy\u1ec3n m\u00e0 kh\u00f4ng b\u1ecb m\u00e0i m\u00f2n b\u1ec1 m\u1eb7t. Nh\u00e0 th\u1ea7u ph\u1ea3i x\u00e1c minh r\u1eb1ng c\u00e1t \u0111\u1ec7m kh\u00f4ng ch\u1ee9a \u0111\u1ea5t s\u00e9t ho\u1eb7c \u0111\u00e1 l\u1edbn c\u00f3 th\u1ec3 l\u00e0m k\u1eb9t b\u1ec1 m\u1eb7t \u1ed1ng v\u00e0 t\u1ea1o ra \u0111i\u1ec3m \u1ee9ng su\u1ea5t c\u1ee5c b\u1ed9.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Expansion_Loops_for_Buried_Lines\"><\/span><strong>V\u00f2ng gi\u00e3n n\u1edf cho \u0111\u01b0\u1eddng \u1ed1ng ch\u00f4n ng\u1ea7m<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-2 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"628\" data-id=\"8311\" src=\"https:\/\/www.desopipe.com\/wp-content\/uploads\/2026\/08\/image-32-1200x628.webp\" alt=\"V\u00f2ng gi\u00e3n n\u1edf cho \u0111\u01b0\u1eddng \u1ed1ng ch\u00f4n ng\u1ea7m\" class=\"wp-image-8311\" srcset=\"https:\/\/www.desopipe.com\/wp-content\/uploads\/2026\/08\/image-32-1200x628.webp 1200w, https:\/\/www.desopipe.com\/wp-content\/uploads\/2026\/08\/image-32-500x262.webp 500w, https:\/\/www.desopipe.com\/wp-content\/uploads\/2026\/08\/image-32-300x157.webp 300w, https:\/\/www.desopipe.com\/wp-content\/uploads\/2026\/08\/image-32-768x402.webp 768w, https:\/\/www.desopipe.com\/wp-content\/uploads\/2026\/08\/image-32-1536x803.webp 1536w, https:\/\/www.desopipe.com\/wp-content\/uploads\/2026\/08\/image-32-18x9.webp 18w, https:\/\/www.desopipe.com\/wp-content\/uploads\/2026\/08\/image-32-143x75.webp 143w, https:\/\/www.desopipe.com\/wp-content\/uploads\/2026\/08\/image-32-480x251.webp 480w, https:\/\/www.desopipe.com\/wp-content\/uploads\/2026\/08\/image-32-800x418.webp 800w, https:\/\/www.desopipe.com\/wp-content\/uploads\/2026\/08\/image-32.webp 1734w\" sizes=\"auto, (max-width:767px) 480px, (max-width:1200px) 100vw, 1200px\" \/><\/figure>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed1i v\u1edbi c\u00e1c \u0111\u01b0\u1eddng \u1ed1ng c\u00f4ng nghi\u1ec7p d\u00e0i h\u01a1n 30 m\u00e9t, vi\u1ec7c u\u1ed1n l\u01b0\u1ee3n \u1ed1ng th\u01b0\u1eddng kh\u00f4ng \u0111\u1ee7, \u0111\u00f2i h\u1ecfi ph\u1ea3i l\u1eafp \u0111\u1eb7t c\u00e1c v\u00f2ng gi\u00e3n n\u1edf. C\u00e1c \u0111o\u1ea1n offset h\u00ecnh ch\u1eef \u201cU\u201d ho\u1eb7c \u201cZ\u201d n\u00e0y chuy\u1ec3n \u0111\u1ed5i s\u1ef1 t\u0103ng tr\u01b0\u1edfng theo tr\u1ee5c th\u00e0nh \u1ee9ng su\u1ea5t u\u1ed1n, m\u00e0 c\u1ea5u tr\u00fac ph\u00e2n t\u1eed c\u1ee7a PPR x\u1eed l\u00fd t\u1ed1t h\u01a1n l\u00e0 l\u1ef1c c\u0103ng thu\u1ea7n t\u00fay.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c v\u00f2ng n\u00e0y ph\u1ea3i \u0111\u01b0\u1ee3c \u0111\u1eb7t trong c\u00e1c ph\u1ea7n r\u1ed9ng h\u01a1n c\u1ee7a r\u00e3nh v\u00e0 \u0111\u01b0\u1ee3c bao quanh b\u1edfi c\u00e1t r\u1eddi \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o c\u00e1c \u201cch\u00e2n\u201d c\u00f3 th\u1ec3 u\u1ed1n cong t\u1ef1 do. \u0110\u1ec3 gi\u1ea3m k\u00edch th\u01b0\u1edbc v\u1eadt l\u00fd c\u1ee7a c\u00e1c v\u00f2ng n\u00e0y, c\u00e1c k\u1ef9 s\u01b0 th\u01b0\u1eddng quy \u0111\u1ecbnh <a href=\"https:\/\/www.desopipe.com\/vi\/product\/ppr-aluminum-composite-pipe\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u1ed0ng Composite Nh\u00f4m PPR<\/a> cho ph\u00e2n ph\u1ed1i n\u01b0\u1edbc n\u00f3ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L\u1edbp nh\u00f4m trung t\u00e2m trong c\u00e1c \u1ed1ng n\u00e0y ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t b\u1ed9 x\u01b0\u01a1ng c\u01a1 h\u1ecdc, gi\u1ea3m t\u1ed1c \u0111\u1ed9 gi\u00e3n n\u1edf xu\u1ed1ng g\u1ea7n b\u1eb1ng t\u1ed1c \u0111\u1ed9 c\u1ee7a \u1ed1ng kim lo\u1ea1i. M\u1ed9t gi\u1ea3i ph\u00e1p thay th\u1ebf hi\u1ec7u qu\u1ea3 kh\u00e1c l\u00e0 <a href=\"https:\/\/www.desopipe.com\/vi\/product\/ppr-fiber-composite-pipe\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u1ed0ng Composite S\u1ee3i PPR<\/a>, s\u1eed d\u1ee5ng c\u1ed1t s\u1ee3i th\u1ee7y tinh 20% \u0111\u1ec3 c\u1ea3i thi\u1ec7n \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc v\u00e0 gi\u1ea3m t\u1ed1c \u0111\u1ed9 gi\u00e3n n\u1edf 75%.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Case_Study_Underground_Water_Systems\"><\/span><strong>Nghi\u00ean c\u1ee9u \u0111i\u1ec3n h\u00ecnh: <a href=\"https:\/\/www.desopipe.com\/vi\/blog\/ppr-pipe\/underground-water-systems-ppr-pipe\/\" data-type=\"link\" data-id=\"https:\/\/www.desopipe.com\/blog\/ppr-pipe\/underground-water-systems-ppr-pipe\/\" target=\"_blank\" rel=\"noreferrer noopener\">H\u1ec7 th\u1ed1ng c\u1ea5p n\u01b0\u1edbc ng\u1ea7m<\/a><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Trong c\u00e1c d\u1ef1 \u00e1n ph\u00e2n ph\u1ed1i HVAC quy m\u00f4 l\u1edbn, \u0111\u1ed9 d\u00e0y th\u00e0nh \u1ed1ng \u0111\u1ed3ng nh\u1ea5t l\u00e0 r\u1ea5t quan tr\u1ecdng v\u00ec c\u00e1c ph\u1ea7n kh\u00f4ng \u0111\u1ec1u l\u00e0m t\u1eadp trung \u1ee9ng su\u1ea5t nhi\u1ec7t. S\u1eed d\u1ee5ng \u1ed1ng \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t b\u1eb1ng quy tr\u00ecnh t\u1ef1 \u0111\u1ed9ng h\u00f3a cao, nh\u01b0 h\u01a1n 200 m\u00e1y t\u1ea1i c\u01a1 s\u1edf c\u1ee7a DESO, gi\u00fap duy tr\u00ec s\u1ef1 nh\u1ea5t qu\u00e1n tr\u00ean c\u00e1c \u0111\u01b0\u1eddng \u1ed1ng ng\u1ea7m d\u00e0i.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng c\u00f3 y\u00eau c\u1ea7u cao n\u00e0y, s\u1eed d\u1ee5ng <a href=\"https:\/\/www.desopipe.com\/vi\/product\/pp-rct-pipe\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u1ed0ng PP-RCT<\/a> mang l\u1ea1i kh\u1ea3 n\u0103ng ch\u1ed1ng \u00e1p l\u1ef1c t\u1ed1t h\u01a1n 25% \u1edf nhi\u1ec7t \u0111\u1ed9 \u0111\u1ec9nh. \u0110i\u1ec1u n\u00e0y cung c\u1ea5p m\u1ed9t bi\u00ean \u0111\u1ed9 an to\u00e0n b\u1ed5 sung ch\u1ed1ng l\u1ea1i s\u1ef1 m\u1ecfi nhi\u1ec7t v\u00e0 s\u1ef1 tr\u01b0\u1ee3t m\u1ed1i n\u1ed1i trong c\u00e1c bi\u1ebfn \u0111\u1ed9ng nhi\u1ec7t \u0111\u1ed9 theo m\u00f9a.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t k\u1ecbch b\u1ea3n l\u1eafp \u0111\u1eb7t th\u1ef1c t\u1ebf bao g\u1ed3m s\u1ef1 chuy\u1ec3n \u0111\u1ed5i t\u1eeb d\u1ecdc sang ngang, n\u01a1i \u0111\u01b0\u1eddng \u1ed1ng ng\u1ea7m g\u1eb7p \u1ed1ng \u0111\u1ee9ng c\u1ee7a t\u00f2a nh\u00e0. N\u1ebfu \u0111\u01b0\u1eddng \u1ed1ng ngang gi\u00e3n n\u1edf \u0111\u00e1ng k\u1ec3, n\u00f3 c\u00f3 th\u1ec3 l\u00e0m l\u1ec7ch \u1ed1ng \u0111\u1ee9ng; c\u00e1c chuy\u00ean gia gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 n\u00e0y b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng offset \u201cc\u00e1nh tay xoay\u201d ho\u1eb7c l\u1edbp \u0111\u1ec7m c\u00e1t r\u1eddi.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Troubleshooting_and_Commissioning_Logic\"><\/span><strong>Logic kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 v\u00e0 v\u1eadn h\u00e0nh th\u1eed<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t v\u1ea5n \u0111\u1ec1 kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 th\u01b0\u1eddng g\u1eb7p li\u00ean quan \u0111\u1ebfn vi\u1ec7c x\u00e1c \u0111\u1ecbnh \u201cs\u1ef1 tr\u01b0\u1ee3t m\u1ed1i n\u1ed1i\u201d t\u1ea1i khu\u1ef7u \u0111\u1ea7u ti\u00ean c\u1ee7a \u0111\u01b0\u1eddng \u1ed1ng ng\u1ea7m n\u01a1i s\u1ef1 gi\u00e3n n\u1edf kh\u00f4ng \u0111\u01b0\u1ee3c b\u00f9 \u0111\u1eafp. N\u1ebfu \u1ed1ng \u0111\u01b0\u1ee3c neo qu\u00e1 c\u1ee9ng v\u00e0o \u0111\u1ea5t, l\u1ef1c nhi\u1ec7t cu\u1ed1i c\u00f9ng s\u1ebd \u0111\u1ea9y khu\u1ef7u ra kh\u1ecfi v\u1ecb tr\u00ed, d\u1eabn \u0111\u1ebfn c\u00e1c v\u1ebft n\u1ee9t \u1ea9n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Nh\u00e0 th\u1ea7u ph\u1ea3i x\u00e1c minh r\u1eb1ng vi\u1ec7c h\u00e0n n\u1ed1i nhi\u1ec7t \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u1edf ch\u00ednh x\u00e1c 260\u00b0C \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o m\u1ed1i n\u1ed1i ph\u00e2n t\u1eed m\u1ea1nh h\u01a1n ch\u00ednh \u1ed1ng. Trong qu\u00e1 tr\u00ecnh v\u1eadn h\u00e0nh th\u1eed, th\u1ef1c hi\u1ec7n ki\u1ec3m tra \u00e1p su\u1ea5t \u1edf m\u1ee9c 1,5 \u0111\u1ebfn 2 l\u1ea7n \u00e1p su\u1ea5t l\u00e0m vi\u1ec7c trong \u00edt nh\u1ea5t 30 ph\u00fat tr\u01b0\u1edbc khi l\u1ea5p cu\u1ed1i c\u00f9ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed1i v\u1edbi c\u00e1c k\u1ebft n\u1ed1i v\u0129nh vi\u1ec5n, ch\u1ed1ng r\u00f2 r\u1ec9 trong kh\u00f4ng gian h\u1eb9p, <a href=\"https:\/\/www.desopipe.com\/vi\/product-category\/ppr-fitting\/ppr-electro-fusion-fitting\/\" target=\"_blank\" rel=\"noreferrer noopener\">Ph\u1ee5 ki\u1ec7n n\u1ed1i \u0111i\u1ec7n PPR<\/a> c\u00e1c t\u00f9y ch\u1ecdn cung c\u1ea5p m\u1ed1i n\u1ed1i ph\u00e2n t\u1eed v\u01b0\u1ee3t tr\u1ed9i. Vi\u1ec7c ki\u1ec3m tra c\u00f3 ph\u01b0\u01a1ng ph\u00e1p n\u00e0y ng\u0103n ng\u1eeba \u201c\u0111i\u1ec3m l\u1ed7i \u1ea9n\u201d th\u01b0\u1eddng ph\u00e1t sinh 12 \u0111\u1ebfn 18 th\u00e1ng sau khi ho\u00e0n th\u00e0nh d\u1ef1 \u00e1n.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Product_and_Manufacturer_Advantages\"><\/span><strong>\u01afu \u0111i\u1ec3m s\u1ea3n ph\u1ea9m v\u00e0 nh\u00e0 s\u1ea3n xu\u1ea5t<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">L\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u ph\u00f9 h\u1ee3p l\u00e0 m\u1ed9t c\u00e1ch ch\u1ee7 \u0111\u1ed9ng \u0111\u1ec3 ki\u1ec3m so\u00e1t chuy\u1ec3n \u0111\u1ed9ng nhi\u1ec7t tr\u01b0\u1edbc khi chi\u1ebfc x\u1ebbng \u0111\u1ea7u ti\u00ean ch\u1ea1m \u0111\u1ea5t. C\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t c\u00f3 ch\u1ee9ng nh\u1eadn nh\u01b0 AENOR, DVGW v\u00e0 WRAS cung c\u1ea5p d\u1eef li\u1ec7u k\u1ef9 thu\u1eadt c\u1ea7n thi\u1ebft \u0111\u1ec3 t\u00ednh to\u00e1n ch\u00ednh x\u00e1c c\u00e1c \u0111o\u1ea1n offset gi\u00e3n n\u1edf.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c h\u1ec7 th\u1ed1ng \u0111\u01b0\u1ee3c ch\u1ee9ng nh\u1eadn n\u00e0y \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho hi\u1ec7u su\u1ea5t d\u1ecbch v\u1ee5 l\u00e2u d\u00e0i khi l\u1eafp \u0111\u1eb7t theo khuy\u1ebfn ngh\u1ecb c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t. Ngu\u1ed3n nguy\u00ean li\u1ec7u th\u00f4 t\u1eeb HYOSUNG v\u00e0 Borealis \u0111\u1ea3m b\u1ea3o \u1ed1ng duy tr\u00ec s\u1ef1 \u1ed5n \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc l\u00e2u d\u00e0i v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng n\u1ee9t do \u1ee9ng su\u1ea5t.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng c\u00f4ng ngh\u1ec7 \u0111\u00fac ti\u00ean ti\u1ebfn, c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t h\u00e0ng \u0111\u1ea7u \u0111\u1ea3m b\u1ea3o m\u1ecdi ph\u1ee5 ki\u1ec7n \u0111\u1ec1u c\u00f3 t\u00ednh to\u00e0n v\u1eb9n c\u1ea5u tr\u00fac \u0111\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c \u1ee9ng su\u1ea5t khi ch\u00f4n. S\u1ef1 k\u1ebft h\u1ee3p k\u1ef9 thu\u1eadt v\u00e0 t\u00ednh linh ho\u1ea1t c\u1ee7a khu\u00f4n l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft cho c\u00e1c b\u1ed1 c\u1ee5c c\u00f4ng nghi\u1ec7p ph\u1ee9c t\u1ea1p \u0111\u00f2i h\u1ecfi c\u00e1c d\u1ecbch chuy\u1ec3n t\u00f9y ch\u1ec9nh ho\u1eb7c x\u1ebfp h\u1ea1ng \u00e1p su\u1ea5t c\u1ee5 th\u1ec3.<\/p>\n\n\n\n<!DOCTYPE html>\r\n<html lang=\"en\">\r\n<head>\r\n  \r\n  <title>S\u1ea3n ph\u1ea9m n\u1ed5i b\u1eadt c\u1ee7a Hero<\/title>\r\n  <style>\r\n    .hero-card {\r\n      display: flex;\r\n      flex-wrap: wrap;\r\n      align-items: center;\r\n      background: #f7f8fa;\r\n      border-radius: 16px;\r\n      box-shadow: 0 6px 20px rgba(0, 0, 0, 0.05);\r\n      padding: 24px;\r\n      max-width: 900px;\r\n      margin: 40px auto;\r\n      font-family: Arial, sans-serif;\r\n      text-decoration: none;\r\n      color: inherit;\r\n font-family: 'Poppins';\r\n    }\r\n\r\n    .hero-image {\r\n      width: 220px;\r\n      height: auto;\r\n      border-radius: 12px;\r\n      object-fit: cover;\r\n      flex-shrink: 0;\r\n    }\r\n\r\n    .hero-content {\r\n      padding-left: 24px;\r\n      flex: 1;\r\n      min-width: 260px;\r\n    }\r\n\r\n    .hero-title {\r\n      font-size: 1.6rem;\r\n      font-weight: bold;\r\n      margin-bottom: 12px;\r\n      color: #222;\r\n      font-family: 'Poppins',\r\n    }\r\n\r\n    .hero-description {\r\n      font-size: 1rem;\r\n      color: #555;\r\n      margin-bottom: 18px;\r\n    }\r\n\r\n    .hero-link {\r\n      display: inline-block;\r\n      padding: 10px 20px;\r\n      background-color: #0066cc;\r\n      color: #fff;\r\n      text-decoration: none;\r\n      border-radius: 8px;\r\n      font-weight: bold;\r\n      transition: background 0.2s ease-in-out;\r\n    }\r\n\r\n    .hero-link:hover {\r\n      background-color: #004c99;\r\n    }\r\n\r\n    @media (max-width: 640px) {\r\n      .hero-card {\r\n        flex-direction: column;\r\n        text-align: center;\r\n      }\r\n\r\n      .hero-content {\r\n        padding-left: 0;\r\n        padding-top: 20px;\r\n      }\r\n\r\n      .hero-image {\r\n        width: 100%;\r\n        max-width: 280px;\r\n      }\r\n    }\r\n  <\/style>\r\n<\/head>\r\n<body>\r\n\r\n<a class=\"hero-card\" href=\"https:\/\/www.desopipe.com\/vi\/product\/standard-ppr-pipe\/\" target=\"_blank\">\r\n  <img decoding=\"async\" class=\"hero-image\" src=\"https:\/\/www.desopipe.com\/wp-content\/uploads\/2025\/01\/4.webp\" alt=\"b\u00fat m\u00e0u kaywin\">\r\n  <div class=\"hero-content\">\r\n    <div class=\"hero-title\">\u1ed0ng PPR ti\u00eau chu\u1ea9n<\/div>\r\n    <div class=\"hero-description\">\u1ed0ng PPR Ti\u00eau chu\u1ea9n.<\/div>\r\n    <span class=\"hero-link\">Xem s\u1ea3n ph\u1ea9m<\/span>\r\n  <\/div>\r\n<\/a>\r\n\r\n<\/body>\r\n<\/html>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span><strong>Ph\u1ea7n k\u1ebft lu\u1eadn<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">L\u00e0m ch\u1ee7 c\u00e1c k\u1ef9 thu\u1eadt gi\u00e3n n\u1edf \u1ed1ng PPR ch\u00f4n l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 duy tr\u00ec \u0111\u1ed9 tin c\u1eady l\u00e2u d\u00e0i v\u00e0 ng\u0103n ng\u1eeba m\u1ecfi kh\u1edbp s\u1edbm. B\u1eb1ng c\u00e1ch k\u1ebft h\u1ee3p logic \u0111\u00e0o r\u00e3nh th\u00f4ng minh v\u1edbi hi\u1ec7u su\u1ea5t cao <a href=\"https:\/\/www.desopipe.com\/vi\/product-category\/ppr-pipe\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u1ed0ng DESO<\/a>, b\u1ea1n lo\u1ea1i b\u1ecf r\u1ee7i ro b\u1ecb cong v\u00eanh do nhi\u1ec7t v\u00e0 h\u1ecfng h\u00f3c c\u01a1 h\u1ecdc.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed1i v\u1edbi c\u00e1c d\u1ef1 \u00e1n y\u00eau c\u1ea7u \u0111\u01b0\u1eddng \u1ed1ng ng\u1ea7m d\u00e0i ho\u1eb7c h\u1ec7 th\u1ed1ng \u00e1p su\u1ea5t cao, l\u00e0m vi\u1ec7c v\u1edbi nh\u00e0 s\u1ea3n xu\u1ea5t c\u00f3 kinh nghi\u1ec7m s\u1ebd gi\u00fap \u0111\u1ea3m b\u1ea3o l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u v\u00e0 qu\u1ea3n l\u00fd gi\u00e3n n\u1edf ph\u00f9 h\u1ee3p. Tu\u00e2n th\u1ee7 c\u00e1c ti\u00eau chu\u1ea9n chuy\u00ean nghi\u1ec7p n\u00e0y \u0111\u1ea3m b\u1ea3o m\u1ea1ng l\u01b0\u1edbi ng\u1ea7m kh\u00f4ng c\u1ea7n b\u1ea3o tr\u00ec, ho\u1ea1t \u0111\u1ed9ng \u0111\u00e1ng tin c\u1eady trong nhi\u1ec1u th\u1eadp k\u1ef7.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"FAQ\"><\/span><strong>C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_do_you_define_thermal_expansion_in_buried_PPR_systems\"><\/span><strong>B\u1ea1n \u0111\u1ecbnh ngh\u0129a s\u1ef1 gi\u00e3n n\u1edf nhi\u1ec7t trong h\u1ec7 th\u1ed1ng PPR ch\u00f4n ng\u1ea7m nh\u01b0 th\u1ebf n\u00e0o?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Gi\u00e3n n\u1edf nhi\u1ec7t l\u00e0 s\u1ef1 gia t\u0103ng v\u1eadt l\u00fd v\u1ec1 chi\u1ec1u d\u00e0i \u1ed1ng do nhi\u1ec7t \u0111\u1ed9 t\u0103ng, \u0111\u01b0\u1ee3c t\u00ednh b\u1eb1ng 0,15mm tr\u00ean m\u1ed7i m\u00e9t cho m\u1ed7i \u0111\u1ed9 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9 trong PPR ti\u00eau chu\u1ea9n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Why_does_my_buried_pipe_keep_shearing_at_the_riser_transition\"><\/span><strong>T\u1ea1i sao \u1ed1ng ch\u00f4n ng\u1ea7m c\u1ee7a t\u00f4i li\u00ean t\u1ee5c b\u1ecb g\u00e3y t\u1ea1i \u0111i\u1ec3m chuy\u1ec3n ti\u1ebfp \u1ed1ng \u0111\u1ee9ng?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00e2y l\u00e0 m\u1ed9t v\u1ea5n \u0111\u1ec1 kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 ph\u1ed5 bi\u1ebfn, trong \u0111\u00f3 \u0111\u01b0\u1eddng \u1ed1ng ng\u1ea7m ngang gi\u00e3n n\u1edf v\u00e0 \u0111\u1ea9y \u1ed1ng \u0111\u1ee9ng l\u00ean; n\u1ebfu m\u1ed1i n\u1ed1i thi\u1ebfu c\u00e1t r\u1eddi ho\u1eb7c d\u1ecbch chuy\u1ec3n, l\u1ef1c s\u1ebd l\u00e0m g\u00e3y ph\u1ee5 ki\u1ec7n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_is_the_best_way_to_backfill_a_PPR_trench\"><\/span><strong>C\u00e1ch t\u1ed1t nh\u1ea5t \u0111\u1ec3 l\u1ea5p r\u00e3nh \u1ed1ng PPR l\u00e0 g\u00ec?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Quy tr\u00ecnh l\u00e0m vi\u1ec7c y\u00eau c\u1ea7u 100mm l\u1edbp l\u00f3t c\u00e1t s\u1ea1ch, sau \u0111\u00f3 l\u00e0 \u201cu\u1ed1n l\u01b0\u1ee3n\u201d \u1ed1ng; l\u1edbp l\u1ea5p \u0111\u1ea5t ban \u0111\u1ea7u c\u0169ng ph\u1ea3i l\u00e0 c\u00e1t r\u1eddi \u0111\u1ec3 b\u1ea3o v\u1ec7 s\u1ef1 \u1ed5n \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc tr\u01b0\u1edbc khi n\u00e9n cu\u1ed1i c\u00f9ng.<\/p>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-fe48e5de wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-white-color has-text-color has-background has-link-color wp-element-button\" href=\"https:\/\/www.desopipe.com\/vi\/contact\/\" style=\"background-color:#0588a7\" target=\"_blank\" rel=\"noreferrer noopener\">Nh\u1eadn b\u00e1o gi\u00e1 mi\u1ec5n ph\u00ed<\/a><\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Buried PPR pipe expansion management should entail a careful blend of &#8220;snaking&#8221; inside the trench and employing loose sand as pipe bedding to facilitate natural movement<span class=\"excerpt-hellip\"> [\u2026]<\/span><\/p>\n","protected":false},"author":1,"featured_media":8309,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[56],"tags":[],"class_list":["post-8308","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ppr-pipe"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.2 - 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