{"id":69758,"date":"2026-05-17T17:28:00","date_gmt":"2026-05-17T17:28:00","guid":{"rendered":"https:\/\/evgroupchina.com\/encyclopedia-of-metal\/iso-36692020\/"},"modified":"2026-05-19T15:30:59","modified_gmt":"2026-05-19T15:30:59","slug":"iso-36692020","status":"publish","type":"wiki","link":"https:\/\/evgroupchina.com\/en\/encyclopedia-of-metal\/iso-36692020\/","title":{"rendered":"ISO 3669:2020"},"content":{"rendered":"<h2>Technical Purpose and Operational Characteristics<\/h2>\n<p>This regulatory document defines the metric parameters and design features of knife-edge (sharp-edge) flange connections intended for operation within high-vacuum systems. The standard covers both fixed and rotatable versions mounted via bolted connections.<\/p>\n<p>The technical solutions described in the specification ensure the airtightness of vacuum lines across a wide pressure range: from atmospheric pressure to ultra-high vacuum (10\u207b\u00b9\u00b9 Pa). EV Group China supplies components that fully comply with the specified geometric tolerances, ensuring equipment stability under critical loads.<\/p>\n","protected":false},"featured_media":0,"template":"","meta":[],"wiki_category":[120],"class_list":["post-69758","wiki","type-wiki","status-publish","hentry","wiki_category-iso"],"_links":{"self":[{"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/wiki\/69758","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\/69758\/revisions"}],"wp:attachment":[{"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/media?parent=69758"}],"wp:term":[{"taxonomy":"wiki_category","embeddable":true,"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/wiki_category?post=69758"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}