{"id":4384,"date":"2024-06-13T16:57:08","date_gmt":"2024-06-13T08:57:08","guid":{"rendered":"https:\/\/uniasen.com\/?p=4384"},"modified":"2025-08-12T15:13:22","modified_gmt":"2025-08-12T07:13:22","slug":"sch-40-vs-sch-40s","status":"publish","type":"post","link":"https:\/\/uniasen.com\/fr\/blog\/sch-40-vs-sch-40s\/","title":{"rendered":"Diff\u00e9rence entre SCH 40 et SCH 40S"},"content":{"rendered":"<div class=\"row\"  id=\"row-73288605\">\n\n\t<div id=\"col-1854152132\" class=\"col small-12 large-12\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\t<div class=\"img has-hover x md-x lg-x y md-y lg-y\" id=\"image_1771675798\">\n\t\t\t\t\t\t\t\t<div class=\"img-inner dark\" >\n\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"750\" src=\"https:\/\/uniasen.com\/wp-content\/uploads\/2024\/06\/ERW_pipe_supplier_carbon_steel_pipe_UNIASEN.webp\" class=\"attachment-original size-original\" alt=\"Fournisseur de ERW_pipe_carbon_steel_pipe_UNIASEN\" srcset=\"https:\/\/uniasen.com\/wp-content\/uploads\/2024\/06\/ERW_pipe_supplier_carbon_steel_pipe_UNIASEN.webp 1000w, https:\/\/uniasen.com\/wp-content\/uploads\/2024\/06\/ERW_pipe_supplier_carbon_steel_pipe_UNIASEN-300x225.webp 300w, https:\/\/uniasen.com\/wp-content\/uploads\/2024\/06\/ERW_pipe_supplier_carbon_steel_pipe_UNIASEN-768x576.webp 768w, https:\/\/uniasen.com\/wp-content\/uploads\/2024\/06\/ERW_pipe_supplier_carbon_steel_pipe_UNIASEN-16x12.webp 16w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/>\t\t\t\t\t\t\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\n<style>\n#image_1771675798 {\n  width: 100%;\n}\n@media (min-width:550px) {\n  #image_1771675798 {\n    width: 68%;\n  }\n}\n<\/style>\n\t<\/div>\n\t\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n<\/div>\n<p>&nbsp;<\/p>\n<p>De la construction \u00e0 la plomberie, le choix du bon tuyau fait une grande diff\u00e9rence. Il existe diff\u00e9rents tuyaux de tailles et d'\u00e9paisseurs vari\u00e9es. Cependant, les diff\u00e9rences entre SCH 40 et SCH 40S ont fait couler beaucoup d'encre. En raison de l'inclusion de valeurs num\u00e9riques, elles sont les moins bien comprises. Souvent, les gens comparent \u00e9galement <span style=\"color: #ff6600;\"><a style=\"color: #ff6600;\" href=\"https:\/\/uniasen.com\/fr\/blog\/tuyau-en-acier-schedule-20-vs-schedule-40\/\">SCH20 avec SCH40<\/a><\/span>, <span style=\"color: #ff6600;\"><a style=\"color: #ff6600;\" href=\"https:\/\/uniasen.com\/fr\/blog\/difference-entre-les-tuyaux-schedule-40-et-schedule-80\/\">SCH40 vs SCH80<\/a><\/span>.<\/p>\n<p>Ces deux tuyaux ont les m\u00eames dimensions et la m\u00eame \u00e9paisseur. Cependant, ils diff\u00e8rent en termes de mat\u00e9riaux de fabrication. La SCH 40S est consid\u00e9r\u00e9e comme sup\u00e9rieure \u00e0 la SCH 40. Vous vous demandez pourquoi ? Lisez cet article jusqu'\u00e0 la fin pour obtenir une r\u00e9ponse d\u00e9taill\u00e9e.<\/p>\n<div class=\"row\"  id=\"row-785159588\">\n\n\t<div id=\"col-244998784\" class=\"col small-12 large-12\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n<h2>Qu'est-ce qu'un sch\u00e9ma de tuyauterie ?<\/h2>\n<p>Il est n\u00e9cessaire de comprendre le sch\u00e9ma de tuyauterie pour comprendre les diff\u00e9rences entre SCH 40 et SCH 40S. Le SCH utilis\u00e9 devant les num\u00e9ros repr\u00e9sente le programme de tuyauterie. Simplifions le terme pour une meilleure compr\u00e9hension.<\/p>\n<p>Le sch\u00e9ma de tuyauterie repr\u00e9sent\u00e9 par SCH est la norme utilis\u00e9e pour indiquer l'\u00e9paisseur de la paroi. Elle est d\u00e9finie par l'ASTM (American Society for Testing and Materials) et l'ASME (American Society of Mechanical). Elle indique que SCH 40 et SCH 40S ont la m\u00eame \u00e9paisseur et les m\u00eames dimensions.<\/p>\n<p>Ainsi, les cotes des tuyaux mesurent l'\u00e9paisseur de la paroi d'un tuyau. Un diam\u00e8tre plus \u00e9lev\u00e9 signifie que la paroi du tuyau est plus \u00e9paisse et vice versa. Dans le cas pr\u00e9sent, ces types de tuyaux ont la m\u00eame \u00e9paisseur de paroi. La question se pose donc : Que signifie \"S\" lorsqu'il est \u00e9crit SCH 40S ? Voyons ce qu'il en est et comprenons la signification de S.<\/p>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n<\/div>\n<div class=\"row\"  id=\"row-1415185668\">\n\n\t<div id=\"col-150116564\" class=\"col small-12 large-12\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n<h2>Que signifie le \"S\" dans le sch\u00e9ma de tuyauterie ?<\/h2>\n<p>Le S \u00e9crit apr\u00e8s 40 dans SCH 40S repr\u00e9sente l'acier inoxydable. Ce tuyau est donc fabriqu\u00e9 en acier inoxydable. En d'autres termes, il indique le mat\u00e9riau utilis\u00e9 pour fabriquer le tuyau. Ces tuyaux ont donc les m\u00eames dimensions et la m\u00eame \u00e9paisseur, mais diff\u00e8rent par leur mat\u00e9riau.<\/p>\n<p>La contrepartie, SCH 40, peut \u00eatre constitu\u00e9e de n'importe quel mat\u00e9riau. Il s'agit notamment de l'acier au carbone et du PVC. Les caract\u00e9ristiques de ces types de tuyaux diff\u00e8rent en fonction du mat\u00e9riau utilis\u00e9 pour leur fabrication. L'acier inoxydable \u00e9tant un mat\u00e9riau de qualit\u00e9 sup\u00e9rieure, la SCH 40S est une option sup\u00e9rieure \u00e0 son homologue.<\/p>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n<\/div>\n<div class=\"row\"  id=\"row-1296828665\">\n\n\t<div id=\"col-1679341092\" class=\"col small-12 large-12\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n<h2>Tuyau Sch 40 vs Sch 40S<\/h2>\n<p><span style=\"font-weight: 400;\">Vous avez compris la d\u00e9finition de base de ces deux types dans la section ci-dessus. En r\u00e9sum\u00e9, ils ont tous deux la m\u00eame \u00e9paisseur de paroi et les m\u00eames dimensions. Cependant, ils sont diff\u00e9rents en termes de mat\u00e9riaux qui les composent. Approfondissons la question et comprenons les principales diff\u00e9rences qui influencent leurs performances.<\/span><\/p>\n<h3>1- Protection contre la rouille<\/h3>\n<p><span style=\"font-weight: 400;\">Dans la section pr\u00e9c\u00e9dente, j'ai mentionn\u00e9 que la SCH 40S est fabriqu\u00e9e en acier inoxydable. Ce mat\u00e9riau est solide et ne rouille pas. M\u00eame si vous utilisez ce mat\u00e9riau dans des conditions difficiles, il ne deviendra pas corrosif. C'est pourquoi les tubes SCH 40S sont r\u00e9sistants \u00e0 la corrosion.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Comprenons la logique de l'antirouille. L'acier inoxydable est compos\u00e9 de 10,5% de chrome. Ainsi, lorsque ce mat\u00e9riau entre en contact avec l'oxyg\u00e8ne, il forme une fine couche protectrice. Cette couche, appel\u00e9e oxyde de chrome, emp\u00eache l'oxyg\u00e8ne et l'humidit\u00e9 d'atteindre la surface de l'acier inoxydable.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Ainsi, lorsque l'humidit\u00e9 n'atteint pas la surface, il n'y a pas de corrosion. Les <a href=\"https:\/\/uniasen.com\/fr\/blog\/quest-ce-quun-tube-en-acier-schedule-40\/\">Tuyaux SCH 40<\/a> sont \u00e9galement prot\u00e9g\u00e9s de la corrosion par une couche de zinc. Toutefois, ce rev\u00eatement commence \u00e0 se d\u00e9t\u00e9riorer au bout d'un certain temps. Ainsi, ces tuyaux rouillent lorsque le rev\u00eatement s'\u00e9puise. C'est pourquoi il est pr\u00e9f\u00e9rable d'opter pour le SCH 40s.<\/span><\/p>\n<h3>2- Pressions nominales<\/h3>\n<p><span style=\"font-weight: 400;\">Les tubes SCH 40 en acier inoxydable sont plus robustes. Bien que leur \u00e9paisseur soit la m\u00eame que celle des SCH 40, la qualit\u00e9 du mat\u00e9riau est bien meilleure. Ils peuvent donc supporter sans probl\u00e8me les pressions les plus \u00e9lev\u00e9es.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">En revanche, les tuyaux SCH 40 sont relativement plus fins. Ils ne peuvent pas supporter une pression extr\u00eame. Par cons\u00e9quent, la pression nominale de SCH 40S est une meilleure option. Si vous avez besoin d'un tuyau ayant une meilleure capacit\u00e9 de r\u00e9sistance \u00e0 la pression, je vous recommande d'utiliser le SCH 40S.<\/span><\/p>\n<h3>3- Facilit\u00e9 d'installation<\/h3>\n<p><span style=\"font-weight: 400;\">L'acier inoxydable est lourd et son utilisation dans les SCH 40S le rend encore plus lourd. En revanche, les tuyaux SCH 40 sont l\u00e9gers et faciles \u00e0 tenir et \u00e0 transporter. Il serait donc plus facile d'installer des SCH 40 que des SCH 40S. Toutefois, la SCH 40S, plus lourde, offrira de meilleures performances que son homologue.<\/span><\/p>\n<h3>4- L'\u00e2ge et la dur\u00e9e de vie<\/h3>\n<p><span style=\"font-weight: 400;\">La rouille et la corrosion sont les grands ennemis des tuyaux. Comme ces tuyaux transportent de l'eau et d'autres fluides, leur contact permanent avec l'humidit\u00e9 les rend sensibles \u00e0 la rouille. Par cons\u00e9quent, les tuyaux les plus r\u00e9sistants \u00e0 la rouille auront plus d'anciennet\u00e9. Les SCH 40 sont r\u00e9sistantes \u00e0 la rouille. Il ne s'ab\u00eemera donc pas.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Cependant, les tuyaux SCH 40 rouilleront une fois que la couche de zinc sera \u00e9puis\u00e9e. Vous pouvez toutefois compter sur une dur\u00e9e de vie de 40 \u00e0 50 ans pour ce type de tuyau. Les tuyaux SCH 40S, plus robustes et plus r\u00e9sistants \u00e0 la rouille, peuvent durer jusqu'\u00e0 70 ou 80 ans. Cela fait de la SCH 40S un investissement id\u00e9al \u00e0 long terme.<\/span><\/p>\n<h3>5- Prix et accessibilit\u00e9<\/h3>\n<p><span style=\"font-weight: 400;\">C'est l'un des facteurs les plus importants \u00e0 prendre en compte. En raison de l'utilisation d'un mat\u00e9riau de qualit\u00e9 sup\u00e9rieure, le SCH 40S est plus cher. Vous aurez besoin d'un budget important pour acheter ces tuyaux. En revanche, les tuyaux SCH 40 sont moins chers. Cependant, en raison des meilleures performances, le prix plus \u00e9lev\u00e9 de la SCH 40S vaut chaque centime.<\/span><\/p>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n<\/div>\n<div class=\"row\"  id=\"row-1606269486\">\n\n\t<div id=\"col-470964381\" class=\"col small-12 large-12\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n<h2>Questions fr\u00e9quemment pos\u00e9es<\/h2>\n<p><b>Q1 : Que signifie SCH 40 ?<\/b><\/p>\n<p><span style=\"font-weight: 400;\">SCH 40 d\u00e9signe les tubes dont l'\u00e9paisseur de paroi est de 40 SCH. Ils sont constitu\u00e9s de mat\u00e9riaux autres que l'acier inoxydable. Il peut s'agir d'acier au carbone ou de plastique PVC.<\/span><\/p>\n<p><b>Q2 : Quel est le diam\u00e8tre d'un tuyau en acier inoxydable de 40 ?<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Un tuyau en acier inoxydable Schedule 40 signifie qu'il a une \u00e9paisseur de 40. Leur mat\u00e9riau est l'acier inoxydable. Ils sont inoxydables, solides et durables.\u00a0<\/span><\/p>\n<p><b>Q3 : Ces deux tuyaux ont-ils des dimensions diff\u00e9rentes d'une unit\u00e9 \u00e0 l'autre ou seulement dans les PPB ?<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Ces deux tuyaux, SCH 40 et SCH 40S, ont la m\u00eame \u00e9paisseur de paroi. Ils ont des mesures exactes, m\u00eame en ce qui concerne le diam\u00e8tre ext\u00e9rieur nominal (NP).<\/span><\/p>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n<\/div>\n<div class=\"row\"  id=\"row-1522825369\">\n\n\t<div id=\"col-807672746\" class=\"col small-12 large-12\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n<h2>Conclusion<\/h2>\n<p><span style=\"font-weight: 400;\">Les SCH 40 et 40 sont d'excellentes options. Vous pouvez choisir l'une ou l'autre et obtenir une performance d\u00e9cente. <\/span><\/p>\n<p><span style=\"font-weight: 400;\">Il est toutefois essentiel de comprendre leurs diff\u00e9rences. SCH 40S est une option sup\u00e9rieure en raison de son antirouille id\u00e9al. <\/span><\/p>\n<p><span style=\"font-weight: 400;\">Vous obtiendrez plus d'\u00e2ge avec ceux-ci. Ce serait un investissement judicieux si vous pr\u00e9f\u00e9rez les SCH 40. Nous sommes sp\u00e9cialis\u00e9s dans la fourniture de tubes en acier de diff\u00e9rentes \u00e9paisseurs et qualit\u00e9s. <span style=\"color: #ff6600;\"><a style=\"color: #ff6600;\" href=\"https:\/\/uniasen.com\/fr\/contact\/\">Contactez nous<\/a><\/span> pour un devis imm\u00e9diat.<\/span><\/p>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n<\/div>","protected":false},"excerpt":{"rendered":"<p>SCH 40 et SCH 40S sont des nomenclatures de tuyaux qui sp\u00e9cifient l'\u00e9paisseur de la paroi des tuyaux en acier. La SCH 40 est largement utilis\u00e9e dans diverses industries pour son \u00e9paisseur standard, tandis que la SCH 40S pr\u00e9sente de l\u00e9g\u00e8res diff\u00e9rences adapt\u00e9es \u00e0 des applications sp\u00e9cifiques. Cet article clarifie leurs d\u00e9finitions, leurs distinctions cl\u00e9s et leurs utilisations appropri\u00e9es, ce qui permet de faire des choix \u00e9clair\u00e9s pour les projets industriels et de construction.<\/p>","protected":false},"author":10,"featured_media":4389,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-4384","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Difference Between SCH 40 and SCH 40S - UNIASEN<\/title>\n<meta name=\"description\" content=\"SCH 40 and SCH 40S refer to different pipe schedules. SCH 40 is a common standard for steel pipes, indicating a specific wall thickness. SCH 40S, while similar, has slight variations typically used in specific applications.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/uniasen.com\/fr\/blog\/sch-40-vs-sch-40s\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Difference Between SCH 40 and SCH 40S - UNIASEN\" \/>\n<meta property=\"og:description\" content=\"SCH 40 and SCH 40S refer to different pipe schedules. SCH 40 is a common standard for steel pipes, indicating a specific wall thickness. SCH 40S, while similar, has slight variations typically used in specific applications.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/uniasen.com\/fr\/blog\/sch-40-vs-sch-40s\/\" \/>\n<meta property=\"og:site_name\" content=\"UNIASEN\" \/>\n<meta property=\"article:published_time\" content=\"2024-06-13T08:57:08+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-08-12T07:13:22+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/uniasen.com\/wp-content\/uploads\/2024\/06\/ERW_pipe_supplier_carbon_steel_pipe_UNIASEN.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"1000\" \/>\n\t<meta property=\"og:image:height\" content=\"750\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\n<meta name=\"author\" content=\"Fiona\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"Fiona\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"5 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/uniasen.com\/blog\/sch-40-vs-sch-40s\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/uniasen.com\/blog\/sch-40-vs-sch-40s\/\"},\"author\":{\"name\":\"Fiona\",\"@id\":\"https:\/\/uniasen.com\/#\/schema\/person\/10cd4f9f6400879e795a1a9e3f1d5f13\"},\"headline\":\"Difference Between SCH 40 and SCH 40S\",\"datePublished\":\"2024-06-13T08:57:08+00:00\",\"dateModified\":\"2025-08-12T07:13:22+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/uniasen.com\/blog\/sch-40-vs-sch-40s\/\"},\"wordCount\":1068,\"publisher\":{\"@id\":\"https:\/\/uniasen.com\/#organization\"},\"image\":{\"@id\":\"https:\/\/uniasen.com\/blog\/sch-40-vs-sch-40s\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/uniasen.com\/wp-content\/uploads\/2024\/06\/ERW_pipe_supplier_carbon_steel_pipe_UNIASEN.webp\",\"articleSection\":[\"Blog\"],\"inLanguage\":\"fr-FR\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/uniasen.com\/blog\/sch-40-vs-sch-40s\/\",\"url\":\"https:\/\/uniasen.com\/blog\/sch-40-vs-sch-40s\/\",\"name\":\"Difference Between SCH 40 and SCH 40S - UNIASEN\",\"isPartOf\":{\"@id\":\"https:\/\/uniasen.com\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/uniasen.com\/blog\/sch-40-vs-sch-40s\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/uniasen.com\/blog\/sch-40-vs-sch-40s\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/uniasen.com\/wp-content\/uploads\/2024\/06\/ERW_pipe_supplier_carbon_steel_pipe_UNIASEN.webp\",\"datePublished\":\"2024-06-13T08:57:08+00:00\",\"dateModified\":\"2025-08-12T07:13:22+00:00\",\"description\":\"SCH 40 and SCH 40S refer to different pipe schedules. 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