{"id":473,"date":"2026-11-07T10:29:51","date_gmt":"2026-11-07T10:29:51","guid":{"rendered":"https:\/\/hcpiping.com\/?post_type=product&#038;p=473"},"modified":"2026-11-07T10:31:07","modified_gmt":"2026-11-07T10:31:07","slug":"high-temperature-wp91-concentric-reducer-for-steam-piping","status":"publish","type":"product","link":"https:\/\/hcpiping.com\/zh\/product\/high-temperature-wp91-concentric-reducer-for-steam-piping\/","title":{"rendered":"High-Temperature WP91 Concentric Reducer for Steam Piping"},"content":{"rendered":"<p data-pm-slice=\"1 1 []\">Hongcheng A234 WP91 concentric reducers are manufactured from 9Cr-1Mo-V-Nb alloy steel, a material developed for demanding elevated-temperature service. The concentric configuration maintains a common centerline between the larger and smaller pipe ends, making it suitable for piping layouts where symmetrical diameter transitions are required.<\/p>\n<p>WP91 is the wrought fitting grade under ASTM A234, while ASTM A335 P91 covers seamless pipe and ASTM A182 F91 covers forged components. These grades share a similar alloy composition but are governed by separate material specifications.<\/p>\n<p>The alloy contains chromium, molybdenum, vanadium and niobium. These elements contribute to elevated-temperature strength, creep resistance and oxidation resistance. Material selection should account for operating temperature, pressure, design conditions and the applicable piping code.<\/p>\n<p>WP91 concentric reducers are intended for high-temperature, high-pressure industrial piping. They are particularly relevant to power generation equipment, including main steam and hot reheat systems, where material properties and heat treatment are important to long-term service performance.<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p data-pm-slice=\"1 1 []\">The A234 WP91 Concentric Reducer is a chromium-molybdenum-vanadium alloy steel butt-weld fitting designed to connect pipes of different diameters along a common centerline. It is used in high-temperature piping systems, including power plant main steam lines, hot reheat piping and boiler systems.<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>","protected":false},"featured_media":474,"template":"","meta":{"_acf_changed":false},"product_brand":[],"product_cat":[23,27],"product_tag":[],"class_list":["post-473","product","type-product","status-publish","has-post-thumbnail","product_cat-alloy-pipe-fittings","product_cat-reducer","first","instock","shipping-taxable","product-type-simple"],"acf":[],"_links":{"self":[{"href":"https:\/\/hcpiping.com\/zh\/wp-json\/wp\/v2\/product\/473","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hcpiping.com\/zh\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/hcpiping.com\/zh\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hcpiping.com\/zh\/wp-json\/wp\/v2\/media\/474"}],"wp:attachment":[{"href":"https:\/\/hcpiping.com\/zh\/wp-json\/wp\/v2\/media?parent=473"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/hcpiping.com\/zh\/wp-json\/wp\/v2\/product_brand?post=473"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/hcpiping.com\/zh\/wp-json\/wp\/v2\/product_cat?post=473"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/hcpiping.com\/zh\/wp-json\/wp\/v2\/product_tag?post=473"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}