{"id":5435,"date":"2026-08-14T09:19:21","date_gmt":"2026-08-14T09:19:21","guid":{"rendered":"https:\/\/beiyutitanium.com\/titanium-tube-seamless-or-welded\/"},"modified":"2026-08-15T01:47:35","modified_gmt":"2026-08-15T01:47:35","slug":"titanium-tube-seamless-or-welded","status":"publish","type":"post","link":"https:\/\/beiyutitanium.com\/fr\/titanium-tube-seamless-or-welded\/","title":{"rendered":"Tube en titane : sans soudure ou soud\u00e9, et quelle norme"},"content":{"rendered":"<figure class=\"ti-hero-image\" style=\"margin:0 0 1.2em;\"><img fetchpriority=\"high\" decoding=\"async\" src=\"https:\/\/beiyutitanium.com\/wp-content\/uploads\/2026\/08\/titanium-tube-bores-various-diameters.webp\" alt=\"Titanium tube in several outside diameters with bores visible, supplied to ASTM B338, B861 or B862\" width=\"1200\" height=\"800\" loading=\"eager\" style=\"width:100%;height:auto;border-radius:8px;\" \/><\/figure>\n<h2>Le choix entre sans soudure et soud\u00e9 rel\u00e8ve de la sp\u00e9cification, et non d'un classement de qualit\u00e9<\/h2>\n<p>Les acheteurs consid\u00e8rent souvent le tube soud\u00e9 comme l'option inf\u00e9rieure. Sur une ligne de commande, il ne s'agit pas d'une nuance de qualit\u00e9, mais d'une norme de produit diff\u00e9rente avec une plage dimensionnelle et une base d'acceptation diff\u00e9rentes. Le choix entre les deux d\u00e9termine selon quelle norme le certificat doit \u00eatre \u00e9tabli.<\/p>\n<table>\n<thead>\n<tr>\n<th>Fili\u00e8re<\/th>\n<th>Norme de produit r\u00e9gissant la commande<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Tube sans soudure<\/td>\n<td>ASTM B861<\/td>\n<\/tr>\n<tr>\n<td>Tube soud\u00e9<\/td>\n<td>ASTM B862<\/td>\n<\/tr>\n<tr>\n<td>Tube pour condenseurs et \u00e9changeurs de chaleur<\/td>\n<td>ASTM B338, qui couvre les tubes sans soudure et soud\u00e9s<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>La plage dimensionnelle est g\u00e9n\u00e9ralement le point qui d\u00e9termine la d\u00e9cision<\/h2>\n<p>Les deux proc\u00e9d\u00e9s ne permettent pas d'atteindre les m\u00eames dimensions. En pratique, c'est ce qui d\u00e9termine le choix plus souvent que tout argument concernant la soudure elle-m\u00eame.<\/p>\n<table>\n<thead>\n<tr>\n<th>Forme<\/th>\n<th>Gamme examin\u00e9e par Beiyu<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Tube capillaire<\/td>\n<td>1 mm \u00e0 5 mm de diam\u00e8tre ext\u00e9rieur, 0,1 mm \u00e0 2 mm d'\u00e9paisseur de paroi<\/td>\n<\/tr>\n<tr>\n<td>Tube et pipe sans soudure<\/td>\n<td>5 mm \u00e0 325 mm de diam\u00e8tre ext\u00e9rieur, 0,5 mm \u00e0 12 mm d'\u00e9paisseur de paroi, longueur jusqu'\u00e0 12000 mm<\/td>\n<\/tr>\n<tr>\n<td>Tube et pipe soud\u00e9s<\/td>\n<td>6,35 mm \u00e0 1219 mm de diam\u00e8tre ext\u00e9rieur, 0,5 mm \u00e0 25,4 mm d'\u00e9paisseur de paroi, longueur jusqu'\u00e0 22000 mm<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>La plage dimensionnelle correspond \u00e0 une capacit\u00e9 de production, et non \u00e0 une d\u00e9claration de stock, et toutes les combinaisons de nuance, dimension, \u00e9tat et contr\u00f4le ne sont pas disponibles sur l'ensemble de la plage. La combinaison command\u00e9e est confirm\u00e9e lors de l'offre.<\/p>\n<h2>Les diff\u00e9rences r\u00e9elles entre les deux proc\u00e9d\u00e9s sur une commande<\/h2>\n<table>\n<thead>\n<tr>\n<th>Champ<\/th>\n<th>Ce qui change entre les proc\u00e9d\u00e9s<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Grands diam\u00e8tres<\/td>\n<td>Seul le proc\u00e9d\u00e9 soud\u00e9 atteint la limite sup\u00e9rieure de la plage ci-dessus<\/td>\n<\/tr>\n<tr>\n<td>Grandes longueurs<\/td>\n<td>Le proc\u00e9d\u00e9 soud\u00e9 permet des longueurs sup\u00e9rieures \u00e0 celles du proc\u00e9d\u00e9 sans soudure<\/td>\n<\/tr>\n<tr>\n<td>Contr\u00f4le de soudure<\/td>\n<td>S'applique au proc\u00e9d\u00e9 soud\u00e9 et doit \u00eatre sp\u00e9cifi\u00e9 avec sa base d'acceptation<\/td>\n<\/tr>\n<tr>\n<td>Norme applicable<\/td>\n<td>B861 et B862 sont des normes distinctes, le certificat mentionne donc l'une d'elles<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Les tubes et les pipes ne correspondent pas non plus \u00e0 la m\u00eame ligne de commande<\/h2>\n<p>La distinction n'est pas un probl\u00e8me de synonymes. Elle modifie <a href=\"https:\/\/beiyutitanium.com\/fr\/astm-b338-titanium-tube-pipe-guide\/\">la norme applicable<\/a>, et par cons\u00e9quent les exigences d'acceptation.<\/p>\n<table>\n<thead>\n<tr>\n<th>Command\u00e9 selon<\/th>\n<th>Norme \u00e0 laquelle il renvoie<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Tube pour condenseurs et \u00e9changeurs de chaleur<\/td>\n<td>ASTM B338<\/td>\n<\/tr>\n<tr>\n<td>Tube, sans soudure<\/td>\n<td>ASTM B861<\/td>\n<\/tr>\n<tr>\n<td>Tube, soud\u00e9<\/td>\n<td>ASTM B862<\/td>\n<\/tr>\n<tr>\n<td>Aucune indiqu\u00e9e<\/td>\n<td>L'usine doit demander avant de pouvoir \u00e9tablir une offre, ou elle suppose<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Quelles nuances sont couvertes<\/h2>\n<p>Toutes les nuances ne figurent pas dans chacune de ces normes. Indiquer une nuance sans indiquer la norme laisse la combinaison non v\u00e9rifi\u00e9e.<\/p>\n<table>\n<thead>\n<tr>\n<th>Nuance<\/th>\n<th>Couvert par<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Titane commercialement pur Grade 2 (UNS R50400)<\/td>\n<td>ASTM B338, ASTM B861, ASTM B862<\/td>\n<\/tr>\n<tr>\n<td>Grade 5 Ti-6Al-4V (UNS R56400)<\/td>\n<td>ASTM B861, ASTM B862<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Ce qu'il convient d'indiquer sur la commande<\/h2>\n<pre style=\"white-space:pre-wrap;background:#f4f6f7;border:1px solid #dfe4e8;border-radius:4px;padding:14px 16px;font-size:13.5px;line-height:1.7;overflow-x:auto\">Command\u00e9 comme suit : ______ (tube ou tube) Proc\u00e9d\u00e9 : ______ (sans soudure ou soud\u00e9) Norme applicable : ______ (ASTM B338, B861 or B862) Nuance et UNS : ______ Diam\u00e8tre ext\u00e9rieur et \u00e9paisseur de paroi : ______ Longueur : ______ (indiquer longueur non d\u00e9finie ou longueur de coupe, avec tol\u00e9rance) \u00c9tat : ______ (R \/ M \/ Y, indiqu\u00e9 sur la commande) \u00c9tendue des contr\u00f4les : ______ (indiquer chaque contr\u00f4le avec sa norme et sa classe d'acceptation) Certificat : certificat de r\u00e9ception 3.1 selon EN 10204 avec tra\u00e7abilit\u00e9 par num\u00e9ro de coul\u00e9e, \u00e9tendue du rapport selon la commande<\/pre>\n<p>Indiquez le proc\u00e9d\u00e9 et la norme sur la m\u00eame ligne. Beiyu confirme la combinaison nuance, dimension et norme par rapport au p\u00e9rim\u00e8tre command\u00e9 avant d'\u00e9tablir une offre.<\/p>\n<div class=\"ti-rfq-box\">\n<h2>D\u00e9tails des sp\u00e9cifications avec sources<\/h2>\n<p>La fili\u00e8re et la norme sont deux champs sur une m\u00eame ligne. Les tubes pour condenseurs et \u00e9changeurs de chaleur rel\u00e8vent d'ASTM B338, les tubes sans soudure d'ASTM B861 et les tubes soud\u00e9s d'ASTM B862, et le certificat mentionne l\u2019une de ces normes. La composition chimique de d\u00e9part est commune : <a href=\"https:\/\/store.astm.org\/standards\/b348\" target=\"_blank\" rel=\"noopener\">ASTM B348<\/a> fixe Grade 2 \u00e0 0.25 pour cent d\u2019oxyg\u00e8ne maximum et 0.30 pour cent de fer maximum, et Grade 9 Ti-3Al-2.5V \u00e0 0.15 pour cent d\u2019oxyg\u00e8ne maximum avec 2.5 \u00e0 3.5 pour cent d\u2019aluminium et 2.0 \u00e0 3.0 pour cent de vanadium (ASTM B348, exigences chimiques).<\/p>\n<table data-c195=\"1\">\n<thead>\n<tr>\n<th>Command\u00e9 selon<\/th>\n<th>Norme mentionn\u00e9e sur le certificat<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Tube pour condenseurs et \u00e9changeurs de chaleur<\/td>\n<td>ASTM B338<\/td>\n<\/tr>\n<tr>\n<td>Tube, sans soudure<\/td>\n<td>ASTM B861<\/td>\n<\/tr>\n<tr>\n<td>Tube, soud\u00e9<\/td>\n<td>ASTM B862<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Lorsqu'un examen de soudure est requis, indiquez la m\u00e9thode et sa base d'acceptation sur la commande plut\u00f4t que de vous fier au mot soud\u00e9. Les m\u00e9thodes d'analyse associ\u00e9es au certificat sont r\u00e9f\u00e9renc\u00e9es par les normes de mat\u00e9riaux elles-m\u00eames, notamment ASTM E1409 pour l'oxyg\u00e8ne et l'azote par fusion sous gaz inerte, ASTM E1447 pour l'hydrog\u00e8ne et ASTM E2371 pour l'analyse par \u00e9mission atomique au plasma (ASTM B348, documents r\u00e9f\u00e9renc\u00e9s). La d\u00e9signation d'une m\u00e9thode fixe comment une valeur d\u00e9clar\u00e9e a \u00e9t\u00e9 produite ; elle n'\u00e9tablit pas l'int\u00e9grit\u00e9 de la soudure, qui rel\u00e8ve d'un examen distinct avec sa propre norme et classe d'acceptation. Dans la pratique d'approvisionnement de Beiyu, la combinaison de nuance, de dimension et de norme est confirm\u00e9e dans les limites command\u00e9es avant l'offre.<\/p>\n<h2>Envoyer une demande de prix technique<\/h2>\n<p>Pour les demandes de prix de tubes en titane, incluez la fili\u00e8re, la norme applicable, la nuance et l\u2019UNS, le diam\u00e8tre ext\u00e9rieur et l\u2019\u00e9paisseur de paroi, la longueur, l\u2019\u00e9tat, l\u2019\u00e9tendue du contr\u00f4le avec sa norme et sa classe d\u2019acceptation, ainsi que le certificat mati\u00e8re requis.<\/p>\n<p><a class=\"contact-popup-btn\" href=\"#contact-popup-btn\">Envoyer les d\u00e9tails de la demande de prix<\/a><\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Seamless or welded is a specification decision, not a quality ranking Buyers often treat welded tube as the lesser option. On an order line it is not a grade of quality, it is a different product standard with a different size envelope and a different acceptance basis. Choosing between them decides which standard the certificate [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":5479,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_templately_pack_id":"","_templately_imported_at":"","_templately_source":"","_templately_import_session_id":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[27,137],"tags":[],"class_list":["post-5435","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","category-technical-guides"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Titanium Tube: Seamless or Welded, and Which Standard<\/title>\n<meta name=\"description\" content=\"Seamless and welded are different product standards with different size envelopes, not grades of quality. See which standard each points to, where the envelopes differ, and what to state on the order.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/beiyutitanium.com\/fr\/titanium-tube-seamless-or-welded\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Titanium Tube: Seamless or Welded, and Which Standard\" \/>\n<meta property=\"og:description\" content=\"Seamless and welded are different product standards with different size envelopes, not grades of quality. See which standard each points to, where the envelopes differ, and what to state on the order.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/beiyutitanium.com\/fr\/titanium-tube-seamless-or-welded\/\" \/>\n<meta property=\"og:site_name\" content=\"Beiyu Titanium\" \/>\n<meta property=\"article:published_time\" content=\"2026-08-14T09:19:21+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-08-15T01:47:35+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/beiyutitanium.com\/wp-content\/uploads\/2026\/08\/titanium-tube-bores-various-diameters.webp\" \/>\n<meta name=\"author\" content=\"Penn Ma\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Penn Ma\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/beiyutitanium.com\\\/titanium-tube-seamless-or-welded\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/beiyutitanium.com\\\/titanium-tube-seamless-or-welded\\\/\"},\"author\":{\"name\":\"Penn Ma\",\"@id\":\"https:\\\/\\\/beiyutitanium.com\\\/#\\\/schema\\\/person\\\/3560db17cf08813edf34f012735b971b\"},\"headline\":\"Titanium Tube: Seamless or Welded, and Which Standard\",\"datePublished\":\"2026-08-14T09:19:21+00:00\",\"dateModified\":\"2026-08-15T01:47:35+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/beiyutitanium.com\\\/titanium-tube-seamless-or-welded\\\/\"},\"wordCount\":688,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/beiyutitanium.com\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/beiyutitanium.com\\\/titanium-tube-seamless-or-welded\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/beiyutitanium.com\\\/wp-content\\\/uploads\\\/2026\\\/08\\\/titanium-tube-bores-various-diameters.webp\",\"articleSection\":[\"News\",\"Technical Guides\"],\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/beiyutitanium.com\\\/titanium-tube-seamless-or-welded\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/beiyutitanium.com\\\/titanium-tube-seamless-or-welded\\\/\",\"url\":\"https:\\\/\\\/beiyutitanium.com\\\/titanium-tube-seamless-or-welded\\\/\",\"name\":\"Titanium Tube: Seamless or Welded, and Which Standard\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/beiyutitanium.com\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/beiyutitanium.com\\\/titanium-tube-seamless-or-welded\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/beiyutitanium.com\\\/titanium-tube-seamless-or-welded\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/beiyutitanium.com\\\/wp-content\\\/uploads\\\/2026\\\/08\\\/titanium-tube-bores-various-diameters.webp\",\"datePublished\":\"2026-08-14T09:19:21+00:00\",\"dateModified\":\"2026-08-15T01:47:35+00:00\",\"description\":\"Seamless and welded are different product standards with different size envelopes, not grades of quality. 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Production runs through the Beiyu titanium mill in Baoji, Shaanxi. 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Ce travail reposait sur des plans de contr\u00f4le et d'essais, la certification des mat\u00e9riaux et la tra\u00e7abilit\u00e9 par num\u00e9ro de coul\u00e9e, la coordination du contr\u00f4le par tierce partie, ainsi que le contr\u00f4le de la documentation et des dossiers de projet. Ce sont les quatre m\u00eames \u00e9l\u00e9ments qu'un acheteur de l'industrie des proc\u00e9d\u00e9s ou un acheteur soumis \u00e0 r\u00e9glementation exigera d'un fournisseur de titane, et le fait d'avoir d\u00fb les faire appliquer en tant que client explique qu'ils soient trait\u00e9s ici comme faisant partie de la fourniture plut\u00f4t que comme des documents produits ult\u00e9rieurement. Son travail quotidien couvre les questions auxquelles ce site est destin\u00e9 \u00e0 r\u00e9pondre : choisir entre des nuances de titane commercialement pur et alli\u00e9 pour un service corrosif, lire un certificat mati\u00e8re par rapport \u00e0 la norme command\u00e9e, et faire correspondre la d\u00e9signation d'un acheteur (nuance ASTM, UNS, num\u00e9ro Werkstoff allemand ou code NF fran\u00e7ais) au m\u00eame m\u00e9tal sur diff\u00e9rents march\u00e9s. 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