{"id":69545,"date":"2026-05-17T17:26:53","date_gmt":"2026-05-17T17:26:53","guid":{"rendered":"https:\/\/evgroupchina.com\/encyclopedia-of-metal\/jis-g3462\/"},"modified":"2026-05-19T15:29:29","modified_gmt":"2026-05-19T15:29:29","slug":"jis-g3462","status":"publish","type":"wiki","link":"https:\/\/evgroupchina.com\/en\/encyclopedia-of-metal\/jis-g3462\/","title":{"rendered":"JIS G3462"},"content":{"rendered":"<h2>Technical requirements of the JIS G3462 standard for heat exchanger tubes<\/h2>\n<p>This Japanese Industrial Standard (JIS G3462) regulates the parameters of cold-finished and hot-finished seamless alloy steel tubes intended for use in boiler installations and high-load heat exchangers. Products supplied by EV Group China comply with strict industry standards regarding chemical composition and mechanical properties necessary for efficient heat transfer in superheaters, fire-tube, and water-tube systems.<\/p>\n<p>The standard does not cover specialized tubes for heating furnaces, nor does it apply to products intended for low-temperature cryogenic equipment.<\/p>\n<h3>Additional testing and quality control methods<\/h3>\n<p>In accordance with EV Group China&#8217;s requirements for ensuring supply reliability, the following additional quality control options are provided for JIS G3462 tubes:<\/p>\n<table class=\"table table-bordered table-hover\">\n<thead>\n<tr>\n<th>Designation<\/th>\n<th>Test Type \/ Characteristic<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Appendix 1 Z1<\/td>\n<td>Material hardness testing<\/td>\n<\/tr>\n<tr>\n<td>Appendix 1 Z2<\/td>\n<td>Determination of yield strength at elevated operating temperatures<\/td>\n<\/tr>\n<tr>\n<td>Appendix 1 Z3<\/td>\n<td>Non-destructive testing using ultrasonic flaw detection<\/td>\n<\/tr>\n<tr>\n<td>Appendix 1 Z4<\/td>\n<td>Structural integrity control using the eddy current method<\/td>\n<\/tr>\n<tr>\n<td>Appendix 2<\/td>\n<td>Specification for the manufacturing of U-bent tubes for heat exchangers<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":0,"template":"","meta":[],"wiki_category":[118],"class_list":["post-69545","wiki","type-wiki","status-publish","hentry","wiki_category-jis"],"_links":{"self":[{"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/wiki\/69545","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\/69545\/revisions"}],"wp:attachment":[{"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/media?parent=69545"}],"wp:term":[{"taxonomy":"wiki_category","embeddable":true,"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/wiki_category?post=69545"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}