{"id":67038,"date":"2026-04-20T13:34:21","date_gmt":"2026-04-20T13:34:21","guid":{"rendered":"https:\/\/evgroupchina.com\/encyclopedia-of-metal\/din-2391\/"},"modified":"2026-04-20T13:42:43","modified_gmt":"2026-04-20T13:42:43","slug":"din-2391","status":"publish","type":"wiki","link":"https:\/\/evgroupchina.com\/en\/encyclopedia-of-metal\/din-2391\/","title":{"rendered":"DIN 2391"},"content":{"rendered":"<p style=\"text-align: right;\"><span style=\"color: #ff0000;\">The DIN 2391 standard has been officially withdrawn and replaced by the current regulation EN 10305-1:2010-05.<\/span><\/p>\n<h2>Technical overview of the DIN 2391-1 standard<\/h2>\n<p>The DIN 2391-1 standard defines dimensional parameters for seamless precision steel tubes produced by cold drawing. This regulatory framework is applied exclusively in conjunction with DIN 2391-2, which establishes technical delivery conditions. The profiles included in Table 2 are the reference standard for designing components in mechanical engineering, hydraulic systems, and the automotive industry, where geometric precision is critical.<\/p>\n<h2>Technical delivery conditions according to DIN 2391-2<\/h2>\n<p>The DIN 2391-2 regulation sets strict requirements for quality, surface condition, and mechanical properties of cold-rolled precision tubes. This standard is aimed at products requiring minimal tolerances with small wall thicknesses, ensuring stable performance in high-load assemblies.<\/p>\n<p>EV Group China notes that this standard does not apply to specialized types of tubes regulated by separate industry standards:<\/p>\n<ul>\n<li>Seamless circular unalloyed steel tubes for special requirements (DIN 1629);<\/li>\n<li>High-performance steel tubes (DIN 1630);<\/li>\n<li>Steel tubes for general structural engineering (DIN 17121);<\/li>\n<li>Fine-grained steel tubes for structural applications (DIN 17124);<\/li>\n<li>Steel tubes with specified low-temperature toughness (DIN 17173);<\/li>\n<li>Steel tubes for high-temperature service (DIN 17175);<\/li>\n<li>Structural tubes made of fine-grained steel (DIN 17179);<\/li>\n<li>Tubes for quenching and tempering (DIN 17204);<\/li>\n<li>Austenitic stainless steel tubes (DIN 17458);<\/li>\n<li>Steel tubes for the transport of combustible fluids and gases (DIN 17172).<\/li>\n<\/ul>\n<p>Upon individual request, EV Group China can provide precision tubes that comply with DIN 2391-1 dimensions, adhering to quality class C requirements as agreed upon with the customer.<\/p>\n","protected":false},"featured_media":0,"template":"","meta":[],"wiki_category":[116,122],"class_list":["post-67038","wiki","type-wiki","status-publish","hentry","wiki_category-din","wiki_category-standarty"],"_links":{"self":[{"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/wiki\/67038","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/types\/wiki"}],"version-history":[{"count":0,"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/wiki\/67038\/revisions"}],"wp:attachment":[{"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/media?parent=67038"}],"wp:term":[{"taxonomy":"wiki_category","embeddable":true,"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/wiki_category?post=67038"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}