{"id":154130,"date":"2026-02-09T13:00:56","date_gmt":"2026-02-09T12:00:56","guid":{"rendered":"https:\/\/stalesia.com\/produkt\/stainless-steel-forged-weld-neck-flange-dn20-269-mm-en1092-1-11b1-pn10-16-25-40-1-4541-321\/"},"modified":"2026-08-13T18:01:37","modified_gmt":"2026-08-13T16:01:37","slug":"stainless-steel-forged-weld-neck-flange-dn20-269-mm-en1092-1-11b1-pn10-16-25-40-1-4541-321","status":"publish","type":"product","link":"https:\/\/stalesia.com\/en\/product\/stainless-steel-forged-weld-neck-flange-dn20-269-mm-en1092-1-11b1-pn10-16-25-40-1-4541-321\/","title":{"rendered":"Stainless steel forged weld neck flange DN20 26,9mm EN1092-1\/11B1 (PN10\/16\/25\/40) 1.4541 \/ 321"},"content":{"rendered":"
\n
\n

<\/i>
\nStainless steel forged flange<\/h4>\n\n\n\n\n\n\n\n\n\n\n
Tube outside diameter<\/td>\nDN20 – 26.9 mm<\/td>\n<\/tr>\n
Number of holes<\/td>\n4<\/td>\n<\/tr>\n
Nominal pressure<\/td>\nPN10\/16\/25\/40<\/td>\n<\/tr>\n
Weight<\/td>\n0.95 kg<\/td>\n<\/tr>\n
Steel grade<\/td>\n1.4541 \/ 321<\/td>\n<\/tr>\n
Norm<\/td>\nEN1092-1\/11B1<\/td>\n<\/tr>\n
Available certificate<\/td>\n3.1<\/td>\n<\/tr>\n
Product code<\/td>\nS-KNSZ\/026.90\/1.4541<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
\n

<\/i>
\nMore about flanges<\/h4>\n

In addition to welding, installations are created using various elements of fittings, when connection with e.g. valves, dampers is required, in such cases it becomes necessary to use flanges. Due to their various applications, there are many types of flanges on the market, for example: blind flanges, flat flanges, loose flanges, loose flanges with a flat ring for welding, threaded flanges, flanges with stubs and neck flanges. Before placing an order for flanges, one should take into account several important parameters that determine their proper functioning in the installation. Such distinguishing features include: DN, flange diameter, bolt hole spacing, number of bolts and their threads, pipe diameter.<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

Stainless steel forged flange Tube outside diameter DN20 – 26.9 mm Number of holes 4 Nominal pressure PN10\/16\/25\/40 Weight 0.95 kg Steel grade 1.4541 \/ 321 Norm EN1092-1\/11B1 Available certificate 3.1 Product code S-KNSZ\/026.90\/1.4541 More about flanges In addition to welding, installations are created using various elements of fittings, when connection with e.g. valves, dampers […]<\/p>\n","protected":false},"featured_media":42181,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[],"product_cat":[973],"product_tag":[],"pa_gatunek":[2177,2050,2178],"class_list":["post-154130","product","type-product","status-publish","has-post-thumbnail","product_cat-weld-neck-flanges","pa_gatunek-1-4541","pa_gatunek-1-4541-321-equivalents","pa_gatunek-2178","first","instock","taxable","shipping-taxable","purchasable","product-type-simple"],"acf":[],"yoast_head":"\nStainless steel forged weld neck flange DN20 26,9mm EN1092-1\/11B1 (PN10\/16\/25\/40) 1.4541 \/ 321 - Stalesia<\/title>\n<meta name=\"description\" content=\"Buy Stainless steel forged weld neck flange DN20 26,9mm EN1092-1\/11B1 (PN10\/16\/25\/40) 1.4541 \/ 321 at Stalesia Stainless Steel Wholesale.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/stalesia.com\/en\/product\/stainless-steel-forged-weld-neck-flange-dn20-269-mm-en1092-1-11b1-pn10-16-25-40-1-4541-321\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Stainless steel forged weld neck flange DN20 26,9mm EN1092-1\/11B1 (PN10\/16\/25\/40) 1.4541 \/ 321 - Stalesia\" \/>\n<meta property=\"og:description\" content=\"Buy Stainless steel forged weld neck flange DN20 26,9mm EN1092-1\/11B1 (PN10\/16\/25\/40) 1.4541 \/ 321 at Stalesia Stainless Steel Wholesale.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/stalesia.com\/en\/product\/stainless-steel-forged-weld-neck-flange-dn20-269-mm-en1092-1-11b1-pn10-16-25-40-1-4541-321\/\" \/>\n<meta property=\"og:site_name\" content=\"Stalesia\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/StalesiaStal\/\" \/>\n<meta property=\"article:modified_time\" content=\"2026-08-13T16:01:37+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/stalesia.com\/wp-content\/uploads\/2026\/01\/stalesia_flange_knsz_4.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"750\" \/>\n\t<meta property=\"og:image:height\" content=\"750\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/stalesia.com\\\/en\\\/product\\\/stainless-steel-forged-weld-neck-flange-dn20-269-mm-en1092-1-11b1-pn10-16-25-40-1-4541-321\\\/\",\"url\":\"https:\\\/\\\/stalesia.com\\\/en\\\/product\\\/stainless-steel-forged-weld-neck-flange-dn20-269-mm-en1092-1-11b1-pn10-16-25-40-1-4541-321\\\/\",\"name\":\"Stainless steel forged weld neck flange DN20 26,9mm EN1092-1\\\/11B1 (PN10\\\/16\\\/25\\\/40) 1.4541 \\\/ 321 - Stalesia\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/stalesia.com\\\/en\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/stalesia.com\\\/en\\\/product\\\/stainless-steel-forged-weld-neck-flange-dn20-269-mm-en1092-1-11b1-pn10-16-25-40-1-4541-321\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/stalesia.com\\\/en\\\/product\\\/stainless-steel-forged-weld-neck-flange-dn20-269-mm-en1092-1-11b1-pn10-16-25-40-1-4541-321\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/stalesia.com\\\/wp-content\\\/uploads\\\/2026\\\/01\\\/stalesia_flange_knsz_4.jpg\",\"datePublished\":\"2026-02-09T12:00:56+00:00\",\"dateModified\":\"2026-08-13T16:01:37+00:00\",\"description\":\"Buy Stainless steel forged weld neck flange DN20 26,9mm EN1092-1\\\/11B1 (PN10\\\/16\\\/25\\\/40) 1.4541 \\\/ 321 at Stalesia Stainless Steel Wholesale.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/stalesia.com\\\/en\\\/product\\\/stainless-steel-forged-weld-neck-flange-dn20-269-mm-en1092-1-11b1-pn10-16-25-40-1-4541-321\\\/#breadcrumb\"},\"inLanguage\":\"en-GB\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/stalesia.com\\\/en\\\/product\\\/stainless-steel-forged-weld-neck-flange-dn20-269-mm-en1092-1-11b1-pn10-16-25-40-1-4541-321\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-GB\",\"@id\":\"https:\\\/\\\/stalesia.com\\\/en\\\/product\\\/stainless-steel-forged-weld-neck-flange-dn20-269-mm-en1092-1-11b1-pn10-16-25-40-1-4541-321\\\/#primaryimage\",\"url\":\"https:\\\/\\\/stalesia.com\\\/wp-content\\\/uploads\\\/2026\\\/01\\\/stalesia_flange_knsz_4.jpg\",\"contentUrl\":\"https:\\\/\\\/stalesia.com\\\/wp-content\\\/uploads\\\/2026\\\/01\\\/stalesia_flange_knsz_4.jpg\",\"width\":750,\"height\":750,\"caption\":\"https:\\\/\\\/stalesia.com\\\/wp-content\\\/uploads\\\/2026\\\/01\\\/stalesia_flange_knl_8.jpg\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/stalesia.com\\\/en\\\/product\\\/stainless-steel-forged-weld-neck-flange-dn20-269-mm-en1092-1-11b1-pn10-16-25-40-1-4541-321\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/stalesia.com\\\/en\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Shop\",\"item\":\"https:\\\/\\\/stalesia.com\\\/sklep\\\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Stainless steel forged weld neck flange DN20 26,9mm EN1092-1\\\/11B1 (PN10\\\/16\\\/25\\\/40) 1.4541 \\\/ 321\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/stalesia.com\\\/en\\\/#website\",\"url\":\"https:\\\/\\\/stalesia.com\\\/en\\\/\",\"name\":\"Stalesia\",\"description\":\"Online shop for stainless steel\",\"publisher\":{\"@id\":\"https:\\\/\\\/stalesia.com\\\/en\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/stalesia.com\\\/en\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-GB\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/stalesia.com\\\/en\\\/#organization\",\"name\":\"Stalesia\",\"url\":\"https:\\\/\\\/stalesia.com\\\/en\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-GB\",\"@id\":\"https:\\\/\\\/stalesia.com\\\/en\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/stalesia.com\\\/wp-content\\\/uploads\\\/2026\\\/01\\\/logo-stalesia.png\",\"contentUrl\":\"https:\\\/\\\/stalesia.com\\\/wp-content\\\/uploads\\\/2026\\\/01\\\/logo-stalesia.png\",\"width\":2444,\"height\":889,\"caption\":\"Stalesia\"},\"image\":{\"@id\":\"https:\\\/\\\/stalesia.com\\\/en\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.facebook.com\\\/StalesiaStal\\\/\"],\"legalName\":\"Stalesia Sp\u00f3\u0142ka z Ograniczon\u0105 Odpowiedzialno\u015bci\u0105\",\"vatID\":\"PL6792899343\",\"address\":{\"@type\":\"PostalAddress\",\"streetAddress\":\"ul. Mariana Domaga\u0142y 19\",\"postalCode\":\"30-741\",\"addressLocality\":\"Krak\u00f3w\",\"addressCountry\":\"PL\"},\"contactPoint\":[{\"@type\":\"ContactPoint\",\"contactType\":\"customer service\",\"telephone\":\"+48 12 260 10 65\",\"email\":\"shop@stalesia.com\",\"areaServed\":\"PL\",\"hoursAvailable\":{\"@type\":\"OpeningHoursSpecification\",\"dayOfWeek\":[\"Monday\",\"Tuesday\",\"Wednesday\",\"Thursday\",\"Friday\"],\"opens\":\"08:00\",\"closes\":\"16:30\"}}]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Stainless steel forged weld neck flange DN20 26,9mm EN1092-1\/11B1 (PN10\/16\/25\/40) 1.4541 \/ 321 - Stalesia","description":"Buy Stainless steel forged weld neck flange DN20 26,9mm EN1092-1\/11B1 (PN10\/16\/25\/40) 1.4541 \/ 321 at Stalesia Stainless Steel Wholesale.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/stalesia.com\/en\/product\/stainless-steel-forged-weld-neck-flange-dn20-269-mm-en1092-1-11b1-pn10-16-25-40-1-4541-321\/","og_locale":"en_GB","og_type":"article","og_title":"Stainless steel forged weld neck flange DN20 26,9mm EN1092-1\/11B1 (PN10\/16\/25\/40) 1.4541 \/ 321 - Stalesia","og_description":"Buy Stainless steel forged weld neck flange DN20 26,9mm EN1092-1\/11B1 (PN10\/16\/25\/40) 1.4541 \/ 321 at Stalesia Stainless Steel Wholesale.","og_url":"https:\/\/stalesia.com\/en\/product\/stainless-steel-forged-weld-neck-flange-dn20-269-mm-en1092-1-11b1-pn10-16-25-40-1-4541-321\/","og_site_name":"Stalesia","article_publisher":"https:\/\/www.facebook.com\/StalesiaStal\/","article_modified_time":"2026-08-13T16:01:37+00:00","og_image":[{"width":750,"height":750,"url":"https:\/\/stalesia.com\/wp-content\/uploads\/2026\/01\/stalesia_flange_knsz_4.jpg","type":"image\/jpeg"}],"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/stalesia.com\/en\/product\/stainless-steel-forged-weld-neck-flange-dn20-269-mm-en1092-1-11b1-pn10-16-25-40-1-4541-321\/","url":"https:\/\/stalesia.com\/en\/product\/stainless-steel-forged-weld-neck-flange-dn20-269-mm-en1092-1-11b1-pn10-16-25-40-1-4541-321\/","name":"Stainless steel forged weld neck flange DN20 26,9mm EN1092-1\/11B1 (PN10\/16\/25\/40) 1.4541 \/ 321 - Stalesia","isPartOf":{"@id":"https:\/\/stalesia.com\/en\/#website"},"primaryImageOfPage":{"@id":"https:\/\/stalesia.com\/en\/product\/stainless-steel-forged-weld-neck-flange-dn20-269-mm-en1092-1-11b1-pn10-16-25-40-1-4541-321\/#primaryimage"},"image":{"@id":"https:\/\/stalesia.com\/en\/product\/stainless-steel-forged-weld-neck-flange-dn20-269-mm-en1092-1-11b1-pn10-16-25-40-1-4541-321\/#primaryimage"},"thumbnailUrl":"https:\/\/stalesia.com\/wp-content\/uploads\/2026\/01\/stalesia_flange_knsz_4.jpg","datePublished":"2026-02-09T12:00:56+00:00","dateModified":"2026-08-13T16:01:37+00:00","description":"Buy Stainless steel forged weld neck flange DN20 26,9mm EN1092-1\/11B1 (PN10\/16\/25\/40) 1.4541 \/ 321 at Stalesia Stainless Steel Wholesale.","breadcrumb":{"@id":"https:\/\/stalesia.com\/en\/product\/stainless-steel-forged-weld-neck-flange-dn20-269-mm-en1092-1-11b1-pn10-16-25-40-1-4541-321\/#breadcrumb"},"inLanguage":"en-GB","potentialAction":[{"@type":"ReadAction","target":["https:\/\/stalesia.com\/en\/product\/stainless-steel-forged-weld-neck-flange-dn20-269-mm-en1092-1-11b1-pn10-16-25-40-1-4541-321\/"]}]},{"@type":"ImageObject","inLanguage":"en-GB","@id":"https:\/\/stalesia.com\/en\/product\/stainless-steel-forged-weld-neck-flange-dn20-269-mm-en1092-1-11b1-pn10-16-25-40-1-4541-321\/#primaryimage","url":"https:\/\/stalesia.com\/wp-content\/uploads\/2026\/01\/stalesia_flange_knsz_4.jpg","contentUrl":"https:\/\/stalesia.com\/wp-content\/uploads\/2026\/01\/stalesia_flange_knsz_4.jpg","width":750,"height":750,"caption":"https:\/\/stalesia.com\/wp-content\/uploads\/2026\/01\/stalesia_flange_knl_8.jpg"},{"@type":"BreadcrumbList","@id":"https:\/\/stalesia.com\/en\/product\/stainless-steel-forged-weld-neck-flange-dn20-269-mm-en1092-1-11b1-pn10-16-25-40-1-4541-321\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/stalesia.com\/en\/"},{"@type":"ListItem","position":2,"name":"Shop","item":"https:\/\/stalesia.com\/sklep\/"},{"@type":"ListItem","position":3,"name":"Stainless steel forged weld neck flange DN20 26,9mm EN1092-1\/11B1 (PN10\/16\/25\/40) 1.4541 \/ 321"}]},{"@type":"WebSite","@id":"https:\/\/stalesia.com\/en\/#website","url":"https:\/\/stalesia.com\/en\/","name":"Stalesia","description":"Online shop for stainless steel","publisher":{"@id":"https:\/\/stalesia.com\/en\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/stalesia.com\/en\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-GB"},{"@type":"Organization","@id":"https:\/\/stalesia.com\/en\/#organization","name":"Stalesia","url":"https:\/\/stalesia.com\/en\/","logo":{"@type":"ImageObject","inLanguage":"en-GB","@id":"https:\/\/stalesia.com\/en\/#\/schema\/logo\/image\/","url":"https:\/\/stalesia.com\/wp-content\/uploads\/2026\/01\/logo-stalesia.png","contentUrl":"https:\/\/stalesia.com\/wp-content\/uploads\/2026\/01\/logo-stalesia.png","width":2444,"height":889,"caption":"Stalesia"},"image":{"@id":"https:\/\/stalesia.com\/en\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/StalesiaStal\/"],"legalName":"Stalesia Sp\u00f3\u0142ka z Ograniczon\u0105 Odpowiedzialno\u015bci\u0105","vatID":"PL6792899343","address":{"@type":"PostalAddress","streetAddress":"ul. Mariana Domaga\u0142y 19","postalCode":"30-741","addressLocality":"Krak\u00f3w","addressCountry":"PL"},"contactPoint":[{"@type":"ContactPoint","contactType":"customer service","telephone":"+48 12 260 10 65","email":"shop@stalesia.com","areaServed":"PL","hoursAvailable":{"@type":"OpeningHoursSpecification","dayOfWeek":["Monday","Tuesday","Wednesday","Thursday","Friday"],"opens":"08:00","closes":"16:30"}}]}]}},"_links":{"self":[{"href":"https:\/\/stalesia.com\/en\/wp-json\/wp\/v2\/product\/154130","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/stalesia.com\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/stalesia.com\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/stalesia.com\/en\/wp-json\/wp\/v2\/comments?post=154130"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/stalesia.com\/en\/wp-json\/wp\/v2\/media\/42181"}],"wp:attachment":[{"href":"https:\/\/stalesia.com\/en\/wp-json\/wp\/v2\/media?parent=154130"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/stalesia.com\/en\/wp-json\/wp\/v2\/product_brand?post=154130"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/stalesia.com\/en\/wp-json\/wp\/v2\/product_cat?post=154130"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/stalesia.com\/en\/wp-json\/wp\/v2\/product_tag?post=154130"},{"taxonomy":"pa_gatunek","embeddable":true,"href":"https:\/\/stalesia.com\/en\/wp-json\/wp\/v2\/pa_gatunek?post=154130"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}