{"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\/de\/titanium-tube-seamless-or-welded\/","title":{"rendered":"Titanrohr: Nahtlos oder geschwei\u00dft, und welcher Standard"},"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>Nahtlos oder geschwei\u00dft ist eine Spezifikationsentscheidung, keine Qualit\u00e4tsrangfolge<\/h2>\n<p>K\u00e4ufer behandeln geschwei\u00dftes Rohr oft als die geringere Option. Auf einer Bestellposition ist es keine Qualit\u00e4tsstufe, sondern eine andere Produktnorm mit einem anderen Gr\u00f6\u00dfenbereich und einer anderen Abnahmegrundlage. Die Wahl zwischen beiden entscheidet, gegen welche Norm das Zeugnis geschrieben werden muss.<\/p>\n<table>\n<thead>\n<tr>\n<th>Ablauf<\/th>\n<th>Produktstandard, unter dem die Bestellung l\u00e4uft<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Nahtlose Rohrleitung<\/td>\n<td>ASTM B861<\/td>\n<\/tr>\n<tr>\n<td>Geschwei\u00dfte Rohrleitung<\/td>\n<td>ASTM B862<\/td>\n<\/tr>\n<tr>\n<td>Rohr f\u00fcr Kondensatoren und W\u00e4rmetauscher<\/td>\n<td>ASTM B338, das sowohl nahtlos als auch geschwei\u00dft abdeckt<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Der Gr\u00f6\u00dfenbereich ist meist der Punkt, an dem die Entscheidung f\u00e4llt<\/h2>\n<p>Die beiden Wege erreichen nicht dieselben Gr\u00f6\u00dfen. In der Praxis entscheidet dies die Wahl h\u00e4ufiger als jede Diskussion \u00fcber die Schwei\u00dfnaht selbst.<\/p>\n<table>\n<thead>\n<tr>\n<th>Form<\/th>\n<th>Bereich, gegen den Beiyu pr\u00fcft<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Kapillarrohr<\/td>\n<td>1 mm bis 5 mm Au\u00dfendurchmesser, 0,1 mm bis 2 mm Wanddicke<\/td>\n<\/tr>\n<tr>\n<td>Nahtloses Rohr und nahtlose Rohrleitung<\/td>\n<td>5 mm bis 325 mm Au\u00dfendurchmesser, 0,5 mm bis 12 mm Wanddicke, L\u00e4nge bis 12000 mm<\/td>\n<\/tr>\n<tr>\n<td>Geschwei\u00dftes Rohr und geschwei\u00dfte Rohrleitung<\/td>\n<td>6,35 mm bis 1219 mm Au\u00dfendurchmesser, 0,5 mm bis 25,4 mm Wanddicke, L\u00e4nge bis 22000 mm<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Der Bereich ist eine Fertigungsf\u00e4higkeit, keine Lagerbestandsangabe, und nicht jede Kombination aus Grade, Gr\u00f6\u00dfe, Zustand und Pr\u00fcfung existiert \u00fcber den gesamten Bereich. Die bestellte Kombination wird bei Angebotserstellung best\u00e4tigt.<\/p>\n<h2>Wo sich die beiden Wege bei einer Bestellung tats\u00e4chlich unterscheiden<\/h2>\n<table>\n<thead>\n<tr>\n<th>Feld<\/th>\n<th>Was sich zwischen den Wegen \u00e4ndert<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Gro\u00dfe Durchmesser<\/td>\n<td>Nur der geschwei\u00dfte Weg erreicht das obere Ende des oben genannten Bereichs<\/td>\n<\/tr>\n<tr>\n<td>Lange L\u00e4ngen<\/td>\n<td>Der geschwei\u00dfte Weg erreicht l\u00e4ngere L\u00e4ngen als der nahtlose Weg<\/td>\n<\/tr>\n<tr>\n<td>Schwei\u00dfnahtpr\u00fcfung<\/td>\n<td>Gilt f\u00fcr den geschwei\u00dften Weg und muss mit ihrer Abnahmegrundlage festgelegt werden<\/td>\n<\/tr>\n<tr>\n<td>Ma\u00dfgebende Norm<\/td>\n<td>B861 und B862 sind getrennte Standards, sodass das Zertifikat einen von ihnen benennt<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Rohr (tube) und Rohrleitung (pipe) sind ebenfalls keine identische Bestellposition<\/h2>\n<p>Der Unterschied ist kein Problem von Synonymen. Er \u00e4ndert <a href=\"https:\/\/beiyutitanium.com\/de\/astm-b338-titanium-tube-pipe-guide\/\">welcher Standard ma\u00dfgeblich ist<\/a>, und damit, welche Abnahmeanforderungen gelten.<\/p>\n<table>\n<thead>\n<tr>\n<th>Bestellt als<\/th>\n<th>Standard, auf den verwiesen wird<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Rohr f\u00fcr Kondensatoren und W\u00e4rmetauscher<\/td>\n<td>ASTM B338<\/td>\n<\/tr>\n<tr>\n<td>Rohrleitung, nahtlos<\/td>\n<td>ASTM B861<\/td>\n<\/tr>\n<tr>\n<td>Rohrleitung, geschwei\u00dft<\/td>\n<td>ASTM B862<\/td>\n<\/tr>\n<tr>\n<td>Keines angegeben<\/td>\n<td>Das Werk muss nachfragen, bevor es anbieten kann, sonst r\u00e4t es<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Welche G\u00fcten abgedeckt sind<\/h2>\n<p>Nicht jede G\u00fcte erscheint in jedem dieser Standards. Eine G\u00fcte ohne Angabe des Standards zu benennen, l\u00e4sst die Kombination unbest\u00e4tigt.<\/p>\n<table>\n<thead>\n<tr>\n<th>G\u00fcte<\/th>\n<th>Abgedeckt durch<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Grade 2 Reintitan (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>Was auf der Bestellung angegeben werden sollte<\/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\">Bestellt als: ______ (Rohr oder Rohrleitung) Weg: ______ (nahtlos oder geschwei\u00dft) Ma\u00dfgebliche Norm: ______ (ASTM B338, B861 oder B862) Grade und UNS: ______ Au\u00dfendurchmesser und Wanddicke: ______ L\u00e4nge: ______ (fallende L\u00e4nge oder Zuschnitt angeben, mit Toleranz) Zustand: ______ (R \/ M \/ Y, in der Bestellung angegeben) Pr\u00fcfumfang: ______ (jede Pr\u00fcfung mit Abnahmenorm und Klasse angeben) Zeugnis: Abnahmepr\u00fcfzeugnis 3.1 nach EN 10204 mit R\u00fcckverfolgbarkeit \u00fcber die Chargennummer, Berichtsumfang je Bestellung<\/pre>\n<p>Benennen Sie Weg und Norm in derselben Zeile. Beiyu best\u00e4tigt die Kombination aus Grade, Gr\u00f6\u00dfe und Norm gegen den bestellten Bereich vor der Angebotserstellung.<\/p>\n<div class=\"ti-rfq-box\">\n<h2>Spezifikationsdetails mit Quellenangabe<\/h2>\n<p>Der Weg und die Norm sind zwei Angaben in einer Zeile. Rohr f\u00fcr Kondensatoren und W\u00e4rmetauscher l\u00e4uft nach ASTM B338, nahtlose Rohrleitung nach ASTM B861 und geschwei\u00dfte Rohrleitung nach ASTM B862, und das Zeugnis benennt einen von ihnen. Die chemische Zusammensetzung ist gemeinsame Grundlage: <a href=\"https:\/\/store.astm.org\/standards\/b348\" target=\"_blank\" rel=\"noopener\">ASTM B348<\/a> legt Grade 2 auf maximal 0,25 Prozent Sauerstoff und maximal 0,30 Prozent Eisen fest, und Grade 9 Ti-3Al-2.5V auf maximal 0,15 Prozent Sauerstoff mit 2,5 bis 3,5 Prozent Aluminium und 2,0 bis 3,0 Prozent Vanadium (ASTM B348, chemische Anforderungen).<\/p>\n<table data-c195=\"1\">\n<thead>\n<tr>\n<th>Bestellt als<\/th>\n<th>Standard, den das Zertifikat benennt<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Rohr f\u00fcr Kondensatoren und W\u00e4rmetauscher<\/td>\n<td>ASTM B338<\/td>\n<\/tr>\n<tr>\n<td>Rohrleitung, nahtlos<\/td>\n<td>ASTM B861<\/td>\n<\/tr>\n<tr>\n<td>Rohrleitung, geschwei\u00dft<\/td>\n<td>ASTM B862<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Wo eine Schwei\u00dfnahtpr\u00fcfung erforderlich ist, geben Sie die Methode und ihre Abnahmegrundlage in der Bestellung an, statt sich auf das Wort geschwei\u00dft zu verlassen. Die Analysemethoden hinter dem Zertifikat werden von den Werkstoffnormen selbst referenziert, darunter ASTM E1409 f\u00fcr Sauerstoff und Stickstoff durch Tr\u00e4gergasschmelzverfahren, ASTM E1447 f\u00fcr Wasserstoff und ASTM E2371 f\u00fcr die Plasma-Atomemissionsanalyse (ASTM B348, referenzierte Dokumente). Die Angabe einer Methode legt fest, wie ein gemeldeter Wert erzeugt wurde; sie belegt nicht die Schwei\u00dfnahtintegrit\u00e4t, die eine eigene Pr\u00fcfung mit eigener Abnahmenorm und -klasse ist. In Beiyus Lieferpraxis wird die Kombination aus Grade, Gr\u00f6\u00dfe und Norm vor dem Angebot gegen den bestellten Bereich best\u00e4tigt.<\/p>\n<h2>Technische RFQ senden<\/h2>\n<p>Geben Sie bei Anfragen f\u00fcr Titanrohr und -rohrleitung den Weg, die ma\u00dfgebliche Norm, Grade und UNS, Au\u00dfendurchmesser und Wanddicke, L\u00e4nge, Zustand, den Pr\u00fcfumfang mit Abnahmenorm und Klasse sowie das erforderliche Werkstoffzeugnis an.<\/p>\n<p><a class=\"contact-popup-btn\" href=\"#contact-popup-btn\">RFQ-Details senden<\/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\/de\/titanium-tube-seamless-or-welded\/\" \/>\n<meta property=\"og:locale\" content=\"de_DE\" \/>\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\/de\/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\":\"de-DE\",\"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. See which standard each points to, where the envelopes differ, and what to state on the order.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/beiyutitanium.com\\\/titanium-tube-seamless-or-welded\\\/#breadcrumb\"},\"inLanguage\":\"de-DE\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/beiyutitanium.com\\\/titanium-tube-seamless-or-welded\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"de-DE\",\"@id\":\"https:\\\/\\\/beiyutitanium.com\\\/titanium-tube-seamless-or-welded\\\/#primaryimage\",\"url\":\"https:\\\/\\\/beiyutitanium.com\\\/wp-content\\\/uploads\\\/2026\\\/08\\\/titanium-tube-bores-various-diameters.webp\",\"contentUrl\":\"https:\\\/\\\/beiyutitanium.com\\\/wp-content\\\/uploads\\\/2026\\\/08\\\/titanium-tube-bores-various-diameters.webp\",\"width\":1200,\"height\":800,\"caption\":\"Titanium tube in several outside diameters with bores visible, supplied to ASTM B338, B861 or B862\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/beiyutitanium.com\\\/titanium-tube-seamless-or-welded\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/beiyutitanium.com\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Titanium Tube: Seamless or Welded, and Which Standard\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/beiyutitanium.com\\\/#website\",\"url\":\"https:\\\/\\\/beiyutitanium.com\\\/\",\"name\":\"Beiyu Titanium\",\"description\":\"Certified titanium materials and custom components for aerospace, medical, chemical, and industrial applications.\",\"publisher\":{\"@id\":\"https:\\\/\\\/beiyutitanium.com\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/beiyutitanium.com\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"de-DE\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/beiyutitanium.com\\\/#organization\",\"name\":\"Beiyu Titanium\",\"alternateName\":\"\u5317\u9a6d\u949b\u4e1a\",\"url\":\"https:\\\/\\\/beiyutitanium.com\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"de-DE\",\"@id\":\"https:\\\/\\\/beiyutitanium.com\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/beiyutitanium.com\\\/wp-content\\\/uploads\\\/2026\\\/03\\\/logo4.png\",\"contentUrl\":\"https:\\\/\\\/beiyutitanium.com\\\/wp-content\\\/uploads\\\/2026\\\/03\\\/logo4.png\",\"width\":429,\"height\":116,\"caption\":\"Beiyu Titanium\"},\"image\":{\"@id\":\"https:\\\/\\\/beiyutitanium.com\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.linkedin.com\\\/company\\\/113015050\\\/\",\"https:\\\/\\\/www.youtube.com\\\/channel\\\/UC4Rr5qjUmKbbnROzU8zwluQ\",\"https:\\\/\\\/www.instagram.com\\\/beiyutrade\\\/\",\"https:\\\/\\\/www.facebook.com\\\/people\\\/Beiyu-Titanium-Group\\\/61580787646046\\\/\",\"https:\\\/\\\/www.crunchbase.com\\\/organization\\\/beiyu-titanium\",\"https:\\\/\\\/www.wikidata.org\\\/wiki\\\/Q140386451\"],\"contactPoint\":{\"@type\":\"ContactPoint\",\"contactType\":\"sales\",\"email\":\"penn@beiyutitanium.com\",\"availableLanguage\":[\"English\",\"Chinese\"]},\"description\":\"Beiyu Titanium (legal entity Jiaxing Beiyu New Materials Technology Co., Ltd.) is a China-based supplier and exporter of ASTM and AMS titanium bar, plate, sheet, tube, pipe, forgings, flanges, fasteners and custom machined parts, plus nickel and Inconel alloys, for chemical, marine, medical and industrial buyers worldwide. Production runs through the Beiyu titanium mill in Baoji, Shaanxi. Orders are RFQ-based, with EN 10204 3.1 mill test certificates and heat-number traceability available on request.\",\"areaServed\":\"Worldwide\",\"knowsAbout\":[\"Titanium\",\"Titanium alloy\",\"Titanium bar\",\"Titanium sheet and plate\",\"Titanium tube and pipe\",\"Titanium forgings\",\"Titanium wire\",\"Titanium anode\"],\"address\":{\"@type\":\"PostalAddress\",\"streetAddress\":\"Baotai Road Industrial Park, High-tech Development Zone\",\"addressLocality\":\"Baoji\",\"addressRegion\":\"Shaanxi\",\"addressCountry\":\"CN\"},\"legalName\":\"Jiaxing Beiyu New Materials Technology Co., Ltd.\"},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/beiyutitanium.com\\\/#\\\/schema\\\/person\\\/3560db17cf08813edf34f012735b971b\",\"name\":\"Penn Ma\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"de-DE\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/0659bdefb633d0d8e567b06d2f8bffac2a369834e53e96c922a06fd8a96f3c72?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/0659bdefb633d0d8e567b06d2f8bffac2a369834e53e96c922a06fd8a96f3c72?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/0659bdefb633d0d8e567b06d2f8bffac2a369834e53e96c922a06fd8a96f3c72?s=96&d=mm&r=g\",\"caption\":\"Penn Ma\"},\"description\":\"Penn Ma is the person who answers the RFQs at Beiyu Titanium. Over 15 years in titanium export he has learned to review each specification line himself, checking grade, standard, dimensions, tolerance and certificate scope against mill capability before quoting, rather than routing enquiries through a sales desk. He came to titanium supply from the other side of the transaction. Before leading Beiyu's international business he worked at Koch (Koch-Glitsch) and was directly involved in delivering a SABIC petrochemical project in Fujian, China. That work was built on inspection and test plans, material certification and heat traceability, third party inspection coordination, and project documentation and dossier control. Those are the same four things a process industry or regulated buyer will hold a titanium supplier to, and having had to enforce them as a customer is why they are treated here as part of the supply rather than as paperwork produced afterwards. His day-to-day work spans the questions this site is written to answer: choosing between commercially pure and alloyed titanium grades for a corrosive service, reading a mill test certificate against the ordered standard, and matching a buyer's designation (ASTM grade, UNS, German Werkstoff number or French NF code) to the same metal across markets. Beiyu supplies titanium, nickel-alloy and refractory mill products across bar, rod, plate, tube, block, ring, coil, ingot, forgings and machined parts, with EN 10204 3.1 documentation and heat-number traceability.\",\"url\":\"https:\\\/\\\/beiyutitanium.com\\\/de\\\/author\\\/penn-ma\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Titanrohr: Nahtlos oder geschwei\u00dft, und welcher Standard","description":"Nahtlos und geschwei\u00dft sind unterschiedliche Produktnormen mit unterschiedlichen Gr\u00f6\u00dfenbereichen, keine Qualit\u00e4tsstufen. Hier erfahren Sie, auf welche Norm jede hinweist, wo sich die Bereiche unterscheiden und was in die Bestellung geh\u00f6rt.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/beiyutitanium.com\/de\/titanium-tube-seamless-or-welded\/","og_locale":"de_DE","og_type":"article","og_title":"Titanium Tube: Seamless or Welded, and Which Standard","og_description":"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.","og_url":"https:\/\/beiyutitanium.com\/de\/titanium-tube-seamless-or-welded\/","og_site_name":"Beiyu Titanium","article_published_time":"2026-08-14T09:19:21+00:00","article_modified_time":"2026-08-15T01:47:35+00:00","og_image":[{"url":"https:\/\/beiyutitanium.com\/wp-content\/uploads\/2026\/08\/titanium-tube-bores-various-diameters.webp","type":"","width":"","height":""}],"author":"Penn Ma","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Penn Ma","Est. reading time":"4 minutes"},"schema":{"@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":"de-DE","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":"Titanrohr: Nahtlos oder geschwei\u00dft, und welcher 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":"Nahtlos und geschwei\u00dft sind unterschiedliche Produktnormen mit unterschiedlichen Gr\u00f6\u00dfenbereichen, keine Qualit\u00e4tsstufen. Hier erfahren Sie, auf welche Norm jede hinweist, wo sich die Bereiche unterscheiden und was in die Bestellung geh\u00f6rt.","breadcrumb":{"@id":"https:\/\/beiyutitanium.com\/titanium-tube-seamless-or-welded\/#breadcrumb"},"inLanguage":"de-DE","potentialAction":[{"@type":"ReadAction","target":["https:\/\/beiyutitanium.com\/titanium-tube-seamless-or-welded\/"]}]},{"@type":"ImageObject","inLanguage":"de-DE","@id":"https:\/\/beiyutitanium.com\/titanium-tube-seamless-or-welded\/#primaryimage","url":"https:\/\/beiyutitanium.com\/wp-content\/uploads\/2026\/08\/titanium-tube-bores-various-diameters.webp","contentUrl":"https:\/\/beiyutitanium.com\/wp-content\/uploads\/2026\/08\/titanium-tube-bores-various-diameters.webp","width":1200,"height":800,"caption":"Titanium tube in several outside diameters with bores visible, supplied to ASTM B338, B861 or B862"},{"@type":"BreadcrumbList","@id":"https:\/\/beiyutitanium.com\/titanium-tube-seamless-or-welded\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/beiyutitanium.com\/"},{"@type":"ListItem","position":2,"name":"Titanium Tube: Seamless or Welded, and Which Standard"}]},{"@type":"WebSite","@id":"https:\/\/beiyutitanium.com\/#website","url":"https:\/\/beiyutitanium.com\/","name":"Beiyu Titanium","description":"Zertifizierte Titanwerkstoffe und kundenspezifische Komponenten f\u00fcr Anwendungen in Luft- und Raumfahrt, Medizin, Chemie und Industrie.","publisher":{"@id":"https:\/\/beiyutitanium.com\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/beiyutitanium.com\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"de-DE"},{"@type":"Organization","@id":"https:\/\/beiyutitanium.com\/#organization","name":"Beiyu Titanium","alternateName":"\u5317\u9a6d\u949b\u4e1a","url":"https:\/\/beiyutitanium.com\/","logo":{"@type":"ImageObject","inLanguage":"de-DE","@id":"https:\/\/beiyutitanium.com\/#\/schema\/logo\/image\/","url":"https:\/\/beiyutitanium.com\/wp-content\/uploads\/2026\/03\/logo4.png","contentUrl":"https:\/\/beiyutitanium.com\/wp-content\/uploads\/2026\/03\/logo4.png","width":429,"height":116,"caption":"Beiyu Titanium"},"image":{"@id":"https:\/\/beiyutitanium.com\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.linkedin.com\/company\/113015050\/","https:\/\/www.youtube.com\/channel\/UC4Rr5qjUmKbbnROzU8zwluQ","https:\/\/www.instagram.com\/beiyutrade\/","https:\/\/www.facebook.com\/people\/Beiyu-Titanium-Group\/61580787646046\/","https:\/\/www.crunchbase.com\/organization\/beiyu-titanium","https:\/\/www.wikidata.org\/wiki\/Q140386451"],"contactPoint":{"@type":"ContactPoint","contactType":"sales","email":"penn@beiyutitanium.com","availableLanguage":["English","Chinese"]},"description":"Beiyu Titanium (Rechtstr\u00e4ger Jiaxing Beiyu New Materials Technology Co., Ltd.) ist ein in China ans\u00e4ssiger Lieferant und Exporteur von ASTM- und AMS-Titanstab, -platte, -blech, -rohr (Tube und Pipe), -schmiedeteilen, -flanschen, -verbindungselementen und kundenspezifisch zerspanten Teilen sowie von Nickel- und Inconel-Legierungen f\u00fcr K\u00e4ufer aus Chemie, Schifffahrt, Medizintechnik und Industrie weltweit. Die Produktion l\u00e4uft \u00fcber Beiyus Titanwerk in Baoji, Shaanxi. Bestellungen erfolgen auf Anfragebasis, mit Werkstoffzeugnissen 3.1 nach EN 10204 und Chargenr\u00fcckverfolgbarkeit auf Anfrage.","areaServed":"Worldwide","knowsAbout":["Titanium","Titanium alloy","Titanium bar","Titanium sheet and plate","Titanium tube and pipe","Titanium forgings","Titanium wire","Titanium anode"],"address":{"@type":"PostalAddress","streetAddress":"Baotai Road Industrial Park, High-tech Development Zone","addressLocality":"Baoji","addressRegion":"Shaanxi","addressCountry":"CN"},"legalName":"Jiaxing Beiyu New Materials Technology Co., Ltd."},{"@type":"Person","@id":"https:\/\/beiyutitanium.com\/#\/schema\/person\/3560db17cf08813edf34f012735b971b","name":"Penn Ma","image":{"@type":"ImageObject","inLanguage":"de-DE","@id":"https:\/\/secure.gravatar.com\/avatar\/0659bdefb633d0d8e567b06d2f8bffac2a369834e53e96c922a06fd8a96f3c72?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/0659bdefb633d0d8e567b06d2f8bffac2a369834e53e96c922a06fd8a96f3c72?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/0659bdefb633d0d8e567b06d2f8bffac2a369834e53e96c922a06fd8a96f3c72?s=96&d=mm&r=g","caption":"Penn Ma"},"description":"Penn Ma ist die Person, die bei Beiyu Titanium die Anfragen beantwortet. In \u00fcber 15 Jahren Titanexport hat er gelernt, jede Spezifikationszeile selbst zu pr\u00fcfen und Grade, Norm, Abmessungen, Toleranz und Zertifikatsumfang gegen die Werkskapazit\u00e4t abzugleichen, bevor er anbietet, statt Anfragen \u00fcber eine Vertriebsstelle zu leiten. Zur Titanlieferung kam er von der anderen Seite des Gesch\u00e4fts. Bevor er das internationale Gesch\u00e4ft von Beiyu leitete, arbeitete er bei Koch (Koch-Glitsch) und war direkt an der Abwicklung eines petrochemischen SABIC-Projekts in Fujian, China, beteiligt. Diese Arbeit beruhte auf Pr\u00fcf- und Inspektionspl\u00e4nen, Werkstoffzertifizierung und Chargen-R\u00fcckverfolgbarkeit, der Koordination von Fremdabnahmen sowie Projektdokumentation und Dossierkontrolle. Das sind dieselben vier Dinge, an denen ein K\u00e4ufer aus der Prozessindustrie oder ein regulierter K\u00e4ufer einen Titanlieferanten misst, und weil er sie selbst als Kunde durchsetzen musste, werden sie hier als Teil der Lieferung behandelt, nicht als nachtr\u00e4glich erstellte Unterlagen. Seine t\u00e4gliche Arbeit umfasst die Fragen, die diese Website beantworten soll: die Wahl zwischen Reintitan und legierten Titan-Grades f\u00fcr einen korrosiven Einsatz, das Lesen eines Werkstoffzeugnisses gegen die bestellte Norm und das Zuordnen einer K\u00e4uferbezeichnung (ASTM-Grade, UNS, deutsche Werkstoffnummer oder franz\u00f6sischer NF-Code) zu demselben Metall \u00fcber verschiedene M\u00e4rkte hinweg. Beiyu liefert Halbzeuge aus Titan, Nickellegierungen und Refrakt\u00e4rmetallen in Stab, Rundstab, Platte, Rohr, Block, Ring, Coil, Barren, Schmiedeteilen und zerspanten Teilen, mit Dokumentation nach EN 10204 3.1 und Chargennummer-R\u00fcckverfolgbarkeit.","url":"https:\/\/beiyutitanium.com\/de\/author\/penn-ma\/"}]}},"_links":{"self":[{"href":"https:\/\/beiyutitanium.com\/de\/wp-json\/wp\/v2\/posts\/5435","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/beiyutitanium.com\/de\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/beiyutitanium.com\/de\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/beiyutitanium.com\/de\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/beiyutitanium.com\/de\/wp-json\/wp\/v2\/comments?post=5435"}],"version-history":[{"count":2,"href":"https:\/\/beiyutitanium.com\/de\/wp-json\/wp\/v2\/posts\/5435\/revisions"}],"predecessor-version":[{"id":5499,"href":"https:\/\/beiyutitanium.com\/de\/wp-json\/wp\/v2\/posts\/5435\/revisions\/5499"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/beiyutitanium.com\/de\/wp-json\/wp\/v2\/media\/5479"}],"wp:attachment":[{"href":"https:\/\/beiyutitanium.com\/de\/wp-json\/wp\/v2\/media?parent=5435"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/beiyutitanium.com\/de\/wp-json\/wp\/v2\/categories?post=5435"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/beiyutitanium.com\/de\/wp-json\/wp\/v2\/tags?post=5435"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}