{"id":67020,"date":"2026-04-20T13:34:17","date_gmt":"2026-04-20T13:34:17","guid":{"rendered":"https:\/\/evgroupchina.com\/encyclopedia-of-metal\/din-2641\/"},"modified":"2026-04-20T13:42:34","modified_gmt":"2026-04-20T13:42:34","slug":"din-2641","status":"publish","type":"wiki","link":"https:\/\/evgroupchina.com\/en\/encyclopedia-of-metal\/din-2641\/","title":{"rendered":"DIN 2641"},"content":{"rendered":"<h2>Technical features and scope of application of loose flanges according to DIN 2641<\/h2>\n<p>The DIN 2641 specification regulates the design parameters of loose flanges on a flat welding ring, designed for operation at a nominal pressure of PN 6. The range of nominal diameters covers values from DN 10 to DN 1200. This standard defines geometric dimensions, material selection, and weight standards for products, ensuring compliance with industrial safety requirements for pipeline systems.<\/p>\n<p>Manufacturing processes, acceptance protocols, and marking of finished products are carried out in strict accordance with the provisions of the DIN 2519 standard.<\/p>\n<h3>Industries for the use of loose flanges<\/h3>\n<ul>\n<li>Petrochemical and chemical industry: installation of aggressive media;<\/li>\n<li>Microelectronics: ensuring the purity of technological flows;<\/li>\n<li>Food industry: equipment for processing synthetic fibers and food ingredients;<\/li>\n<li>Shipbuilding and marine engineering;<\/li>\n<li>Installations for processing and transporting caustic soda.<\/li>\n<\/ul>\n<h3>Operational properties of materials<\/h3>\n<ul>\n<li>High chemical inertness to a wide range of aggressive agents;<\/li>\n<li>Resistance to caustic alkaline environments;<\/li>\n<li>Excellent thermal and electrical conductivity;<\/li>\n<li>Corrosion resistance in contact with natural and distilled water;<\/li>\n<li>Resistance to neutral and alkaline salt solutions;<\/li>\n<li>Inertness to dry fluorine;<\/li>\n<li>Stability of magnetostrictive and electrical characteristics;<\/li>\n<li>Moderate resistance to sulfuric and hydrochloric acids under controlled temperature conditions.<\/li>\n<\/ul>\n<h3>Manufacturing materials offered by EV Group China<\/h3>\n<ul>\n<li>Austenitic stainless steels;<\/li>\n<li>Structural carbon steels;<\/li>\n<li>Specialized nickel alloys.<\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"\/image\/catalog\/wiki\/DIN 2641, 2642, 2655, 2656.png\" alt=\"Photo - loose flanges DIN 2641\" title=\"Loose flanges DIN 2641\"><br \/>\n<img decoding=\"async\" src=\"\/image\/catalog\/wiki\/DIN 2641, 2642, 2655, 2656 \u0447\u0435\u0440\u0442\u0435\u0436.png\" alt=\"Photo - loose flanges DIN 2641 drawing\" title=\"Loose flanges DIN 2641 drawing\"><\/p>\n<p><strong style=\"color: #ff0000;\">Important note: The DIN 2641 standard is considered technically obsolete. Current production of this type of flange is carried out according to the DIN EN 1092-1 (type 02) regulation. For advice on selecting equivalents, please contact EV Group China specialists.<\/strong><\/p>\n","protected":false},"featured_media":0,"template":"","meta":[],"wiki_category":[116,122],"class_list":["post-67020","wiki","type-wiki","status-publish","hentry","wiki_category-din","wiki_category-standarty"],"_links":{"self":[{"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/wiki\/67020","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\/67020\/revisions"}],"wp:attachment":[{"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/media?parent=67020"}],"wp:term":[{"taxonomy":"wiki_category","embeddable":true,"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/wiki_category?post=67020"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}