Standards: GB\/T 9124.1-2019 (PN series) or GB\/T 9124.2-2019 (Class series); export projects may comply with ASME B16.5-2025.
\nStructure: Slip-On (SO) flange; verify flange bore, pipe outside diameter, and internal\/external weld leg requirements.
\nSize Range: ASME B16.5 generally covers NPS 1\/2\u201324; Class 2500 flanges apply up to NPS 12. Specific flange types do not necessarily cover all size-pressure combinations; refer to the corresponding dimension tables.
\nPressure Ratings: Class 150, 300, 400, 600, 900, 1500, 2500, or selected according to the corresponding PN series; allowable pressure-temperature ratings vary based on material group and operating temperature.
\nMaterials\/Facing: Common materials include ASTM A105, A182 F304\/F316, etc.; facing types (RF, FF, RTJ, etc.) must be confirmed in conjunction with the gasket, bolting, and mating flange.<\/p>\n
Ordering\/Acceptance: Confirm flange type, DN\/NPS, PN\/Class, material group, facing type, pipe wall thickness\/bore, and bolting\/gasket system; verify against the corresponding standard dimension tables item by item\u2014availability of all combinations cannot be assumed based solely on the overall scope of the standard.<\/p>","protected":false},"excerpt":{"rendered":"
Flanges connected via internal and external fillet welds after the pipe is inserted into the flange bore offer ease of alignment during installation and lower costs. They are suitable for piping systems operating at low to medium pressures, without drastic temperature fluctuations, and not subject to frequent bending loads.<\/p>","protected":false},"featured_media":325,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[22],"product_tag":[],"class_list":["post-324","product","type-product","status-publish","has-post-thumbnail","product_cat-flange","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/zetengflangefitting.com\/fr\/wp-json\/wp\/v2\/product\/324","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/zetengflangefitting.com\/fr\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/zetengflangefitting.com\/fr\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/zetengflangefitting.com\/fr\/wp-json\/wp\/v2\/comments?post=324"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/zetengflangefitting.com\/fr\/wp-json\/wp\/v2\/media\/325"}],"wp:attachment":[{"href":"https:\/\/zetengflangefitting.com\/fr\/wp-json\/wp\/v2\/media?parent=324"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/zetengflangefitting.com\/fr\/wp-json\/wp\/v2\/product_brand?post=324"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/zetengflangefitting.com\/fr\/wp-json\/wp\/v2\/product_cat?post=324"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/zetengflangefitting.com\/fr\/wp-json\/wp\/v2\/product_tag?post=324"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}