{"id":4097,"date":"2026-01-13T09:00:00","date_gmt":"2026-01-13T09:00:00","guid":{"rendered":"https:\/\/www.desopipe.com\/?p=4097"},"modified":"2026-02-06T03:44:35","modified_gmt":"2026-02-06T03:44:35","slug":"ppr-pipe-wall-thickness-sdr-vs-pn","status":"publish","type":"post","link":"https:\/\/www.desopipe.com\/pt\/blog\/ppr-pipe\/ppr-pipe-wall-thickness-sdr-vs-pn\/","title":{"rendered":"Entendendo SDR vs. PN: Selecionando a espessura de parede adequada para tubos PPR em aplica\u00e7\u00f5es industriais."},"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\">\u00cdndice<\/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=\"Alternar tabela de conte\u00fado\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Alternar<\/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\/pt\/blog\/ppr-pipe\/ppr-pipe-wall-thickness-sdr-vs-pn\/#Why_SDR_and_PN_Are_Not_Interchangeable\" >Por que SDR e PN n\u00e3o s\u00e3o intercambi\u00e1veis<\/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\/pt\/blog\/ppr-pipe\/ppr-pipe-wall-thickness-sdr-vs-pn\/#Selecting_Based_on_Operating_Conditions\" >Sele\u00e7\u00e3o com base nas condi\u00e7\u00f5es de opera\u00e7\u00e3o<\/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.desopipe.com\/pt\/blog\/ppr-pipe\/ppr-pipe-wall-thickness-sdr-vs-pn\/#Temperature_Derating\" >Redu\u00e7\u00e3o de temperatura<\/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.desopipe.com\/pt\/blog\/ppr-pipe\/ppr-pipe-wall-thickness-sdr-vs-pn\/#Surge_Pressure_and_Water_Hammer\" >Press\u00e3o de surto e golpe de ar\u00edete<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.desopipe.com\/pt\/blog\/ppr-pipe\/ppr-pipe-wall-thickness-sdr-vs-pn\/#Chemical_and_Mechanical_Factors\" >Fatores qu\u00edmicos e mec\u00e2nicos<\/a><\/li><\/ul><\/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\/pt\/blog\/ppr-pipe\/ppr-pipe-wall-thickness-sdr-vs-pn\/#Common_Selection_Errors\" >Erros comuns de sele\u00e7\u00e3o<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.desopipe.com\/pt\/blog\/ppr-pipe\/ppr-pipe-wall-thickness-sdr-vs-pn\/#Mismatching_Components_Across_SDR_Classes\" >Componentes incompat\u00edveis entre as classes SDR<\/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.desopipe.com\/pt\/blog\/ppr-pipe\/ppr-pipe-wall-thickness-sdr-vs-pn\/#Specifying_by_PN_Without_Checking_Temperature\" >Especificando por PN sem verificar a temperatura<\/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.desopipe.com\/pt\/blog\/ppr-pipe\/ppr-pipe-wall-thickness-sdr-vs-pn\/#Applying_Standard_Fusion_Parameters_to_Thick-Walled_Pipe\" >Aplica\u00e7\u00e3o de par\u00e2metros de fus\u00e3o padr\u00e3o em tubos de paredes espessas<\/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\/pt\/blog\/ppr-pipe\/ppr-pipe-wall-thickness-sdr-vs-pn\/#Ignoring_Thermal_Expansion_in_Hot_Systems\" >Ignorando a expans\u00e3o t\u00e9rmica em sistemas quentes<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.desopipe.com\/pt\/blog\/ppr-pipe\/ppr-pipe-wall-thickness-sdr-vs-pn\/#DESOs_Manufacturing_Precision_and_Project_Experience\" >Precis\u00e3o de fabrica\u00e7\u00e3o e experi\u00eancia em projetos da DESO<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.desopipe.com\/pt\/blog\/ppr-pipe\/ppr-pipe-wall-thickness-sdr-vs-pn\/#What_This_Means_for_Specification\" >O que isso significa para as especifica\u00e7\u00f5es?<\/a><\/li><\/ul><\/nav><\/div>\n\n<p class=\"wp-block-paragraph\">A classifica\u00e7\u00e3o SDR mede a espessura da parede em rela\u00e7\u00e3o ao di\u00e2metro do tubo. A classifica\u00e7\u00e3o PN indica a press\u00e3o nominal a 20 \u00b0C. Escolher a espessura de parede correta para sistemas PPR industriais depende de adequar as especifica\u00e7\u00f5es do tubo \u00e0s condi\u00e7\u00f5es de opera\u00e7\u00e3o, como temperatura do fluido e sobrepress\u00e3o.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Why_SDR_and_PN_Are_Not_Interchangeable\"><\/span><strong>Por que SDR e PN n\u00e3o s\u00e3o intercambi\u00e1veis<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Os engenheiros costumam tratar SDR e PN como se fossem a mesma coisa. N\u00e3o s\u00e3o.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>SDR (Rela\u00e7\u00e3o Dimensional Padr\u00e3o)<\/strong> \u00c9 a geometria. \u00c9 a rela\u00e7\u00e3o entre o di\u00e2metro externo e a espessura da parede (SDR = D\/s). Um valor de SDR menor significa uma parede mais espessa em rela\u00e7\u00e3o ao tamanho do tubo.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>PN (Press\u00e3o Nominal)<\/strong> O PN20 \u00e9 o desempenho a uma temperatura espec\u00edfica. Ele indica a press\u00e3o m\u00e1xima em bar que o tubo suporta a 20\u00b0C durante uma vida \u00fatil de 50 anos. Um tubo PPR PN20 \u00e9 classificado para 20 bar apenas \u00e0 temperatura ambiente.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"532\" height=\"304\" src=\"https:\/\/www.desopipe.com\/wp-content\/uploads\/2026\/02\/Understanding-SDR-vs.-PN.webp\" alt=\"\" class=\"wp-image-4099\" srcset=\"https:\/\/www.desopipe.com\/wp-content\/uploads\/2026\/02\/Understanding-SDR-vs.-PN.webp 532w, https:\/\/www.desopipe.com\/wp-content\/uploads\/2026\/02\/Understanding-SDR-vs.-PN-500x286.webp 500w, https:\/\/www.desopipe.com\/wp-content\/uploads\/2026\/02\/Understanding-SDR-vs.-PN-300x171.webp 300w, https:\/\/www.desopipe.com\/wp-content\/uploads\/2026\/02\/Understanding-SDR-vs.-PN-18x10.webp 18w, https:\/\/www.desopipe.com\/wp-content\/uploads\/2026\/02\/Understanding-SDR-vs.-PN-131x75.webp 131w, https:\/\/www.desopipe.com\/wp-content\/uploads\/2026\/02\/Understanding-SDR-vs.-PN-480x274.webp 480w\" sizes=\"auto, (max-width:767px) 480px, 532px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Um SDR mais baixo significa paredes mais espessas e maior capacidade de press\u00e3o. Um tubo com SDR 6 suporta mais press\u00e3o do que um com SDR 11. No entanto, o PN varia com a temperatura, enquanto o SDR permanece constante.<\/p>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Classe SDR<\/strong><\/td><td><strong>Classifica\u00e7\u00e3o PN<\/strong><\/td><td><strong>Espessura da parede<\/strong><\/td><td><strong>Uso industrial prim\u00e1rio<\/strong><\/td><\/tr><tr><td>SDR 11<\/td><td>PN10<\/td><td>Afinar<\/td><td>Transporte de \u00e1gua fria, drenagem de baixa press\u00e3o<\/td><\/tr><tr><td>SDR 7.4<\/td><td>PN16<\/td><td>M\u00e9dio<\/td><td>Ar comprimido, \u00e1gua moderadamente quente<\/td><\/tr><tr><td>SDR 6<\/td><td>PN20<\/td><td>Espesso<\/td><td>\u00c1gua quente de alta press\u00e3o, refrigera\u00e7\u00e3o industrial<\/td><\/tr><tr><td>SDR 5<\/td><td>PN25<\/td><td>Extra grosso<\/td><td>Processamento qu\u00edmico, alimenta\u00e7\u00e3o de caldeiras<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">DESO&#039;s <a href=\"https:\/\/www.desopipe.com\/pt\/blog\/ppr-pipe\/ppr-pipe-sizes-and-specifications-guide-for-buyer\/\" target=\"_blank\" rel=\"noreferrer noopener\">guia de tamanhos e especifica\u00e7\u00f5es<\/a> Lista as dimens\u00f5es dos tubos PPR em todas as classes SDR.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Selecting_Based_on_Operating_Conditions\"><\/span><strong>Sele\u00e7\u00e3o com base nas condi\u00e7\u00f5es de opera\u00e7\u00e3o<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">As especifica\u00e7\u00f5es do cat\u00e1logo consideram 20\u00b0C e fluxo constante. Sistemas industriais operam em temperaturas mais altas e apresentam picos de press\u00e3o que as especifica\u00e7\u00f5es do cat\u00e1logo n\u00e3o levam em conta.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Temperature_Derating\"><\/span><strong>Redu\u00e7\u00e3o de temperatura<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">O <a href=\"https:\/\/www.desopipe.com\/pt\/blog\/ppr-pipe\/ppr-pipe-flow-rate-reduce-pressure-loss-in-buildings\/\" target=\"_blank\" rel=\"noreferrer noopener\">classifica\u00e7\u00e3o de press\u00e3o do tubo PPR<\/a> A press\u00e3o diminui com o aumento da temperatura. Um tubo PN20 com press\u00e3o nominal de 20 bar a 20\u00b0C tem sua press\u00e3o nominal reduzida para 10,8 bar a 70\u00b0C. A 80\u00b0C, ele suporta apenas 8 bar.<\/p>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Temperatura<\/strong><\/td><td><strong>PN20 Capacidade real<\/strong><\/td><td><strong>PN25 Capacidade real<\/strong><\/td><\/tr><tr><td>20\u00b0C<\/td><td>20 bar<\/td><td>25 bar<\/td><\/tr><tr><td>60\u00b0C<\/td><td>12,5 bar<\/td><td>15,6 bar<\/td><\/tr><tr><td>70\u00b0C<\/td><td>10,8 bar<\/td><td>13,5 bar<\/td><\/tr><tr><td>80\u00b0C<\/td><td>8,0 bar<\/td><td>10,0 bar<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Surge_Pressure_and_Water_Hammer\"><\/span><strong>Press\u00e3o de surto e golpe de ar\u00edete<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">As bombas industriais geram choque hidr\u00e1ulico durante a partida e o fechamento das v\u00e1lvulas. Um sistema operando a 12 bar em regime permanente pode apresentar picos de 18 bar.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Para sistemas propensos a golpes de ar\u00edete, adicione uma margem de seguran\u00e7a de 50% ao selecionar o SDR. Um tubo de pl\u00e1stico de alta press\u00e3o com SDR 6 ou SDR 5 absorve picos transit\u00f3rios que romperiam paredes mais finas.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Chemical_and_Mechanical_Factors\"><\/span><strong>Fatores qu\u00edmicos e mec\u00e2nicos<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Produtos qu\u00edmicos agressivos degradam a superf\u00edcie interna da tubula\u00e7\u00e3o ao longo do tempo. Paredes mais espessas (menor SDR) proporcionam uma margem de seguran\u00e7a contra corros\u00e3o, o que prolonga a vida \u00fatil no transporte de produtos qu\u00edmicos.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A vibra\u00e7\u00e3o e o impacto externo tamb\u00e9m favorecem um SDR mais baixo. A rigidez adicional impede a deforma\u00e7\u00e3o que poderia causar rachaduras em tubos mais finos.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">DESO&#039;s <a href=\"https:\/\/www.desopipe.com\/pt\/blog\/ppr-pipe\/select-ppr-pipe-in-different-conditions\/\">guia de sele\u00e7\u00e3o de aplicativos<\/a> Este artigo aborda como a temperatura, a press\u00e3o e o tipo de fluido afetam as especifica\u00e7\u00f5es dos tubos PPR.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Common_Selection_Errors\"><\/span><strong>Erros comuns de sele\u00e7\u00e3o<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Mismatching_Components_Across_SDR_Classes\"><\/span><strong>Componentes incompat\u00edveis entre as classes SDR<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A instala\u00e7\u00e3o de conex\u00f5es PN10 em tubos PN20 cria um gargalo. Toda a linha passa a ser classificada para PN10, pois o componente mais fr\u00e1gil define o limite. As conex\u00f5es s\u00e3o as primeiras a falhar, frequentemente rompendo sob a press\u00e3o normal de opera\u00e7\u00e3o.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Specifying_by_PN_Without_Checking_Temperature\"><\/span><strong>Especificando por PN sem verificar a temperatura<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">O uso de SDR 11 (PN10) para aquecimento cont\u00ednuo de \u00e1gua parece adequado se a press\u00e3o de opera\u00e7\u00e3o for inferior a 10 bar. No entanto, a 70 \u00b0C, esse mesmo tubo suporta apenas 5 a 6 bar, o que leva ao aparecimento de fissuras prematuras.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Applying_Standard_Fusion_Parameters_to_Thick-Walled_Pipe\"><\/span><strong>Aplica\u00e7\u00e3o de par\u00e2metros de fus\u00e3o padr\u00e3o em tubos de paredes espessas<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Paredes mais espessas exigem tempos de aquecimento mais longos durante a soldagem por fus\u00e3o. T\u00e9cnicos que aplicam o tempo de fus\u00e3o SDR 11 em tubos SDR 6 ou SDR 5 criam &quot;soldas a frio&quot;, onde o material nunca atinge a profundidade de fus\u00e3o completa. Essas juntas parecem perfeitas, mas apresentam vazamentos sob press\u00e3o.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Ignoring_Thermal_Expansion_in_Hot_Systems\"><\/span><strong>Ignorando a expans\u00e3o t\u00e9rmica em sistemas quentes<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Tubos de parede mais fina se expandem mais sob o calor. Tubos PPR padr\u00e3o em circuitos quentes serpenteiam em valas, tensionam juntas e racham nos pontos de conex\u00e3o. <a href=\"https:\/\/www.desopipe.com\/pt\/blog\/ppr-pipe\/ppr-fiber-composite-pipe-gf-ppr-hot-water-choice\/\" target=\"_blank\" rel=\"noreferrer noopener\">Refor\u00e7ado com fibra<\/a> O SDR 7.4 reduz a expans\u00e3o em 70% e mant\u00e9m a posi\u00e7\u00e3o.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"DESOs_Manufacturing_Precision_and_Project_Experience\"><\/span><strong>Precis\u00e3o de fabrica\u00e7\u00e3o e experi\u00eancia em projetos da DESO<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">H\u00e1 mais de duas d\u00e9cadas, a DESO fornece sistemas PPR para plantas qu\u00edmicas, redes de climatiza\u00e7\u00e3o (HVAC), circuitos de refrigera\u00e7\u00e3o industrial e alimenta\u00e7\u00e3o de caldeiras de alta press\u00e3o.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Na produ\u00e7\u00e3o em n\u00edveis inferiores, criam-se &quot;pontos finos&quot; onde a espessura da parede varia ao longo do mesmo tubo. Esses pontos finos s\u00e3o os primeiros a falhar, pois a parede n\u00e3o suporta a press\u00e3o nominal em sua se\u00e7\u00e3o mais fina. A extrus\u00e3o automatizada da DESO, utilizando resina virgem Borealis RA130E, mant\u00e9m a espessura da parede dentro das toler\u00e2ncias da norma ISO 15874 em cada metro.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Toda a gama de SDR, do SDR 11 ao SDR 5, \u00e9 fornecida por uma \u00fanica fonte com consist\u00eancia. <a href=\"https:\/\/www.desopipe.com\/pt\/blog\/manufacturer\/buyers-guide-to-high-quality-ppr-pipe-material\/\" target=\"_blank\" rel=\"noreferrer noopener\">material de tubo PPR<\/a> As propriedades variam de lote para lote. A equipe de engenharia da DESO analisa as especifica\u00e7\u00f5es do projeto e recomenda a classe SDR com base na temperatura de opera\u00e7\u00e3o, press\u00e3o e tipo de fluido.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_This_Means_for_Specification\"><\/span><strong>O que isso significa para as especifica\u00e7\u00f5es?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">SDR refere-se \u00e0 geometria. PN refere-se \u00e0 capacidade de press\u00e3o a 20 \u00b0C. A temperatura reduz a capacidade de ambas. Para a sele\u00e7\u00e3o de tubos PPR industriais, deve-se combinar a classe SDR com a temperatura de opera\u00e7\u00e3o, os picos de press\u00e3o esperados e a exposi\u00e7\u00e3o a produtos qu\u00edmicos. O componente mais fr\u00e1gil do sistema limita a capacidade de press\u00e3o de todos os componentes conectados a ele.<\/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\/pt\/contact\/\" style=\"background-color:#0588a7\" target=\"_blank\" rel=\"noreferrer noopener\">Obtenha um or\u00e7amento gratuito<\/a><\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>SDR measures wall thickness relative to pipe diameter. PN tells you the pressure rating at 20\u00b0C. Choosing the right plumbing wall thickness for industrial PPR systems<span class=\"excerpt-hellip\"> [\u2026]<\/span><\/p>\n","protected":false},"author":1,"featured_media":4100,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[56],"tags":[],"class_list":["post-4097","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 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>PPR Pipe: Choosing the Right Wall Thickness (SDR vs PN) | DESO Group<\/title>\n<meta name=\"description\" content=\"Learn the difference between SDR and PN ratings for PPR pipes. 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