{"id":69505,"date":"2026-05-17T17:26:40","date_gmt":"2026-05-17T17:26:40","guid":{"rendered":"https:\/\/evgroupchina.com\/encyclopedia-of-metal\/din-28011\/"},"modified":"2026-05-19T15:29:12","modified_gmt":"2026-05-19T15:29:12","slug":"din-28011","status":"publish","type":"wiki","link":"https:\/\/evgroupchina.com\/en\/encyclopedia-of-metal\/din-28011\/","title":{"rendered":"DIN 28011"},"content":{"rendered":"<h2>Technical regulation and scope of the DIN 28011 standard<\/h2>\n<p>The DIN 28011 standard establishes strict geometric requirements for the production of torispherical heads. This specification is crucial for ensuring the structural integrity of pressure vessel equipment.<\/p>\n<p>Main geometric parameters regulated by the standard:<\/p>\n<ul>\n<li>r1 = da;<\/li>\n<li>r2 = 0.1 da;<\/li>\n<li>h1 \u2265 3.5 s;<\/li>\n<li>h2 = 0.1935 da &#8211; 0.455 s.<\/li>\n<\/ul>\n<p>EV Group China&#8217;s technology allows for the manufacturing of both single-piece pressed products and welded heads, provided that the following limitations are met: the nominal outside diameter (da) does not exceed 4000 mm, and the wall thickness (s) is up to 50 mm.<\/p>\n<p>For large-scale products or segmental constructions that fall outside these tolerances, EV Group China specialists conduct individual project documentation approval, ensuring compliance with international safety standards.<\/p>\n<p>For the design of concave heads and basket-type products, the provisions of the DIN 28013 standard should be followed.<\/p>\n<h3>Design strength parameters<\/h3>\n<p>When calculating the minimum wall thickness of a head, EV Group China follows current regulatory frameworks:<\/p>\n<ul>\n<li>For pressure vessels: compliance with TRB (Technische Regeln f\u00fcr Druckbeh\u00e4lter) requirements and current AD-Merkblatt instructions.<\/li>\n<li>For steam boilers: full compliance with TRD (Technische Regeln f\u00fcr Dampfkessel) technical rules.<\/li>\n<\/ul>\n","protected":false},"featured_media":0,"template":"","meta":[],"wiki_category":[116],"class_list":["post-69505","wiki","type-wiki","status-publish","hentry","wiki_category-din"],"_links":{"self":[{"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/wiki\/69505","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\/69505\/revisions"}],"wp:attachment":[{"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/media?parent=69505"}],"wp:term":[{"taxonomy":"wiki_category","embeddable":true,"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/wiki_category?post=69505"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}