{"id":69542,"date":"2026-05-17T17:26:51","date_gmt":"2026-05-17T17:26:51","guid":{"rendered":"https:\/\/evgroupchina.com\/encyclopedia-of-metal\/mss-sp-103\/"},"modified":"2026-05-19T15:29:27","modified_gmt":"2026-05-19T15:29:27","slug":"mss-sp-103","status":"publish","type":"wiki","link":"https:\/\/evgroupchina.com\/en\/encyclopedia-of-metal\/mss-sp-103\/","title":{"rendered":"MSS SP-103"},"content":{"rendered":"<h2>MSS SP-103 Technical Standard: Wrought Copper Fittings for Polybutylene Piping Systems<\/h2>\n<p>This standard defines the engineering requirements for seamless connecting elements manufactured by forging from copper and copper alloys. The specification covers 3\/8&#8243;, 1\/2&#8243;, 3\/4&#8243;, and 1-inch sizes designed for integration into polybutylene (PB) piping systems using metal crimp rings. All products supplied by EV Group China comply with strict industry quality protocols.<\/p>\n<h3>Key Standardization Parameters<\/h3>\n<p>The MSS SP-103 regulatory framework establishes mandatory criteria to ensure the tightness and durability of connections under operating conditions:<\/p>\n<ul>\n<li>Regulated pressure ratings and temperature operating limits.<\/li>\n<li>Standardized nomenclature and abbreviations for end connection types.<\/li>\n<li>Dimensional identification methodology and classification of fitting port openings.<\/li>\n<li>Product marking protocols for manufacturer identification and technical specifications.<\/li>\n<li>Requirements for the chemical composition and physical properties of materials (copper alloys).<\/li>\n<li>Geometric tolerances and dimensional deviations.<\/li>\n<li>Mandatory testing programs and quality control procedures.<\/li>\n<\/ul>\n<p>EV Group China specialists ensure full compliance of supplied components with these technical specifications, guaranteeing the reliability of connection assemblies in critical engineering systems.<\/p>\n","protected":false},"featured_media":0,"template":"","meta":[],"wiki_category":[113],"class_list":["post-69542","wiki","type-wiki","status-publish","hentry","wiki_category-mss"],"_links":{"self":[{"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/wiki\/69542","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\/69542\/revisions"}],"wp:attachment":[{"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/media?parent=69542"}],"wp:term":[{"taxonomy":"wiki_category","embeddable":true,"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/wiki_category?post=69542"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}