{"id":2317,"date":"2026-03-09T11:34:23","date_gmt":"2026-03-09T11:34:23","guid":{"rendered":"https:\/\/nirotec.de\/products\/flanges\/"},"modified":"2026-08-11T08:32:25","modified_gmt":"2026-08-11T08:32:25","slug":"flanges","status":"publish","type":"page","link":"https:\/\/nirotec.de\/en\/products\/flanges\/","title":{"rendered":"Flanges"},"content":{"rendered":"<div class=\"et_pb_section_0 et_pb_section et_section_regular et_block_section et_pb_section_parallax section_has_divider et_pb_bottom_divider preset--module--divi-section--default\"><span class=\"et-pb-parallax-wrapper\"><span class=\"et-pb-parallax-background et-pb-parallax-background-module--divi-section-0\" style=\"background-image:linear-gradient(242deg, #004288 0%,rgba(0,0,0,0.9) 74% 100%), url(https:\/\/nirotec.de\/wp-content\/uploads\/2026\/03\/DSC_0023.jpg);background-color:initial;background-blend-mode:multiply\"><\/span><\/span>\n<div class=\"et_pb_row_0 et_pb_row et_block_row preset--module--divi-row--8e156b44-2ed5-46df-bc81-3f8d33e765e9\">\n<div class=\"et_pb_column_0 et_pb_column et_pb_column_2_3 et_block_column et_pb_css_mix_blend_mode_passthrough preset--module--divi-column--9e85985c-9378-4c2b-9811-1132088c9b5f\">\n<div class=\"et_pb_heading_0 et_pb_heading et_pb_module et_block_module preset--module--divi-heading--5a18cfdd-5b3d-4774-9791-d74740c65af0\"><div class=\"et_pb_heading_container\"><h1 class=\"et_pb_module_header\">Flanges to EN 1092-1 and ASME B16.5<\/h1><\/div><\/div>\n\n<div class=\"et_pb_text_0 et_pb_text et_pb_bg_layout_light et_pb_module et_block_module preset--module--divi-text--34400cc2-b2de-4275-b904-f1fc1d391eed\"><div class=\"et_pb_text_inner\"><p><span data-canva-clipboard=\"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\"><\/span><span>At Nirotec, we supply flanges for industrial piping systems \u2013 in all common designs, pressure ratings and materials. From standard flanges to special designs to EN\/ASME in duplex, Super Duplex or nickel alloys \u2013 with complete documentation and test certificates. <\/span><\/p>\n<\/div><\/div>\n\n<div class=\"et_pb_module et_pb_button_module_wrapper et_pb_button_0_wrapper preset--module--divi-button--default_wrapper\"><a class=\"et_pb_button_0 et_pb_button et_pb_bg_layout_light et_pb_module et_block_module preset--module--divi-button--default\" href=\"https:\/\/nirotec.de\/en\/?page_id=2231\">To the contact form<\/a><\/div>\n<\/div>\n\n<div class=\"et_pb_column_1 et_pb_column et_pb_column_1_3 et-last-child et_block_column et_pb_column_empty et_pb_css_mix_blend_mode_passthrough preset--module--divi-column--9e85985c-9378-4c2b-9811-1132088c9b5f\"><\/div>\n<\/div>\n<div class=\"et_pb_bottom_inside_divider et-no-transition\"><\/div><\/div>\n\n<div class=\"et_pb_section_1 et_pb_section et_section_regular et_block_section section_has_divider et_pb_bottom_divider preset--module--divi-section--default\">\n<div class=\"et_pb_row_1 et_pb_row et_block_row preset--module--divi-row--8e156b44-2ed5-46df-bc81-3f8d33e765e9\">\n<div class=\"et_pb_column_2 et_pb_column et_pb_column_3_5 et_block_column et_pb_css_mix_blend_mode_passthrough preset--module--divi-column--9e85985c-9378-4c2b-9811-1132088c9b5f\">\n<div class=\"et_pb_heading_1 et_pb_heading et_pb_module et_block_module preset--module--divi-heading--5a18cfdd-5b3d-4774-9791-d74740c65af0\"><div class=\"et_pb_heading_container\"><h3 class=\"et_pb_module_header\">Manufacturing & Properties<\/h3><\/div><\/div>\n\n<div class=\"et_pb_text_1 et_pb_text et_pb_bg_layout_light et_pb_module et_block_module preset--module--divi-text--34400cc2-b2de-4275-b904-f1fc1d391eed\"><div class=\"et_pb_text_inner\"><p><span data-canva-clipboard=\"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\"><\/span><\/p>\n<div>\n<p>Manufacturing is carried out using forging processes or machining, ensuring high material density and a uniform microstructure. This is followed \u2013 depending on material and application \u2013 by heat treatment and final machining of the sealing faces and connection geometries. <\/p>\n<p>Through controlled manufacturing processes, we achieve high dimensional accuracy, precise sealing faces and reliable mechanical load capacity of the components.<\/p>\n<p>Our flange designs: <\/p>\n<\/div>\n<div><\/div>\n<\/div><\/div>\n\n<div class=\"et_pb_accordion_0 et_pb_accordion et_pb_module et_block_module\">\n<div class=\"et_pb_accordion_item_0 et_pb_accordion_item et_pb_toggle et_pb_module et_pb_toggle_open et_block_module preset--module--divi-accordion-item--default\"><h5 class=\"et_pb_toggle_title\">To EN 1092-1:<\/h5><div class=\"et_pb_toggle_content\"><ul type=\"disc\">\n<li class=\"yiv1942176570MsoNormal\"><span>Weld neck flange (Type 11 \u2013 Weld Neck)<\/span><\/li>\n<li class=\"yiv1942176570MsoNormal\"><span>Plate flange (Type 01 \u2013 Slip-On)<\/span><\/li>\n<li class=\"yiv1942176570MsoNormal\"><span>Blind flange (Type 05)<\/span><\/li>\n<li class=\"yiv1942176570MsoNormal\"><span>Lap joint flange with weld-on collar (Type 13)<\/span><\/li>\n<li class=\"yiv1942176570MsoNormal\"><span>Threaded flange (Type 02)<\/span><\/li>\n<li class=\"yiv1942176570MsoNormal\"><span>Socket weld flange (Type 12)<\/span><\/li>\n<\/ul>\n<p class=\"yiv1942176570MsoNormal\"><span><strong>Pressure ratings:<\/strong> <\/span><\/p>\n<ul>\n<li class=\"yiv1942176570MsoNormal\"><span>PN 6<\/span><\/li>\n<li class=\"yiv1942176570MsoNormal\"><span> PN 10 <\/span><\/li>\n<li class=\"yiv1942176570MsoNormal\"><span> PN 16 <\/span><\/li>\n<li class=\"yiv1942176570MsoNormal\"><span> PN 25 <\/span><\/li>\n<li class=\"yiv1942176570MsoNormal\"><span> PN 40 <\/span><\/li>\n<li class=\"yiv1942176570MsoNormal\"><span> PN 63 <\/span><\/li>\n<li class=\"yiv1942176570MsoNormal\"><span> PN 100 <\/span><\/li>\n<li class=\"yiv1942176570MsoNormal\"><span> PN 160 <\/span><\/li>\n<li class=\"yiv1942176570MsoNormal\"><span> PN 250 <\/span><\/li>\n<li class=\"yiv1942176570MsoNormal\"><span> PN 320 <\/span><\/li>\n<li class=\"yiv1942176570MsoNormal\"><span> PN 400<\/span><\/li>\n<\/ul>\n<\/div><\/div>\n\n<div class=\"et_pb_accordion_item_1 et_pb_accordion_item et_pb_toggle et_pb_module et_pb_toggle_close et_block_module preset--module--divi-accordion-item--default\"><h5 class=\"et_pb_toggle_title\">To ASME B16.5:<\/h5><div class=\"et_pb_toggle_content\"><ul type=\"disc\">\n<li class=\"yiv1942176570MsoNormal\"><span>Weld Neck Flange<\/span><\/li>\n<li class=\"yiv1942176570MsoNormal\"><span>Slip-On Flange<\/span><\/li>\n<li class=\"yiv1942176570MsoNormal\"><span>Blind Flange<\/span><\/li>\n<li class=\"yiv1942176570MsoNormal\"><span>Threaded Flange<\/span><\/li>\n<li class=\"yiv1942176570MsoNormal\"><span>Socket Weld Flange<\/span><\/li>\n<li class=\"yiv1942176570MsoNormal\"><span>Lap Joint Flange<\/span><\/li>\n<\/ul>\n<p class=\"yiv1942176570MsoNormal\"><span lang=\"EN-GB\"><strong>Pressure classes:<\/strong> <\/span><\/p>\n<ul>\n<li class=\"yiv1942176570MsoNormal\"><span lang=\"EN-GB\">Class 150 <\/span><\/li>\n<li class=\"yiv1942176570MsoNormal\"><span lang=\"EN-GB\"> Class 300 <\/span><\/li>\n<li class=\"yiv1942176570MsoNormal\"><span lang=\"EN-GB\"> Class 600 <\/span><\/li>\n<li class=\"yiv1942176570MsoNormal\"><span lang=\"EN-GB\"> Class 900 <\/span><\/li>\n<li class=\"yiv1942176570MsoNormal\"><span lang=\"EN-GB\"> Class 1500 <\/span><\/li>\n<li class=\"yiv1942176570MsoNormal\"><span lang=\"EN-GB\"> Class 2500<\/span><\/li>\n<\/ul>\n<\/div><\/div>\n\n<div class=\"et_pb_accordion_item_2 et_pb_accordion_item et_pb_toggle et_pb_module et_pb_toggle_close et_block_module preset--module--divi-accordion-item--default\"><h5 class=\"et_pb_toggle_title\">To ASME B16.47:<\/h5><div class=\"et_pb_toggle_content\"><ul type=\"disc\">\n<li class=\"yiv1942176570MsoNormal\"><span lang=\"EN-GB\">Large Diameter Flanges Series A (MSS SP-44)<\/span><\/li>\n<li class=\"yiv1942176570MsoNormal\"><span>Large Diameter Flanges Series B (API 605) For nominal sizes from DN 600 \/ NPS 24<\/span><\/li>\n<\/ul>\n<\/div><\/div>\n\n<div class=\"et_pb_accordion_item_3 et_pb_accordion_item et_pb_toggle et_pb_module et_pb_toggle_close et_block_module preset--module--divi-accordion-item--default\"><h5 class=\"et_pb_toggle_title\">Facing types:<\/h5><div class=\"et_pb_toggle_content\"><ul type=\"disc\">\n<li class=\"yiv1942176570MsoNormal\"><b><span>RF<\/span><\/b><span> \u2013 Raised Face \u2013 standard<\/span><\/li>\n<li class=\"yiv1942176570MsoNormal\"><b><span>FF<\/span><\/b><span> \u2013 Flat Face<\/span><\/li>\n<li class=\"yiv1942176570MsoNormal\"><b><span>RTJ<\/span><\/b><span> \u2013 Ring Type Joint (ring groove) \u2013 for high-pressure offshore applications<\/span><\/li>\n<li class=\"yiv1942176570MsoNormal\"><b><span>LG \/ TG<\/span><\/b><span> \u2013 Tongue & Groove<\/span><\/li>\n<li class=\"yiv1942176570MsoNormal\"><b><span>SW<\/span><\/b><span> \u2013 Spiral Wound \u2013 on request<\/span><\/li>\n<\/ul>\n<\/div><\/div>\n\n<div class=\"et_pb_accordion_item_4 et_pb_accordion_item et_pb_toggle et_pb_module et_pb_toggle_close et_block_module preset--module--divi-accordion-item--default\"><h5 class=\"et_pb_toggle_title\">Standards & codes:<\/h5><div class=\"et_pb_toggle_content\"><ul type=\"disc\">\n<li class=\"yiv1942176570MsoNormal\"><b><span>EN 1092-1<\/span><\/b><span> \u2013 Flanges and their joints, Europe<\/span><\/li>\n<li class=\"yiv1942176570MsoNormal\"><b><span lang=\"EN-GB\">ASME B16.5<\/span><\/b><span lang=\"EN-GB\"> \u2013 Pipe Flanges and Flanged Fittings<\/span><\/li>\n<li class=\"yiv1942176570MsoNormal\"><b><span lang=\"EN-GB\">ASME B16.47<\/span><\/b><span lang=\"EN-GB\"> \u2013 Large Diameter Steel Flanges<\/span><\/li>\n<li class=\"yiv1942176570MsoNormal\"><b><span lang=\"EN-GB\">API 605<\/span><\/b><span lang=\"EN-GB\"> \u2013 Large Diameter Carbon Steel Flanges<\/span><\/li>\n<li class=\"yiv1942176570MsoNormal\"><b><span>EN 13480<\/span><\/b><span> \u2013 Metallic industrial piping<\/span><\/li>\n<li class=\"yiv1942176570MsoNormal\"><b><span>AD 2000<\/span><\/b><span> \u2013 Pressure equipment, Germany<\/span><\/li>\n<li class=\"yiv1942176570MsoNormal\"><b><span>NORSOK M-630<\/span><\/b><span> \u2013 Offshore piping components<\/span><\/li>\n<li class=\"yiv1942176570MsoNormal\"><b><span>KTA 3201 \/ RCC-M<\/span><\/b><span> \u2013 Nuclear engineering<\/span><\/li>\n<li class=\"yiv1942176570MsoNormal\"><span>Project-specific specifications on request<\/span><\/li>\n<\/ul>\n<\/div><\/div>\n<\/div>\n<\/div>\n\n<div class=\"et_pb_column_3 et_pb_column et_pb_column_2_5 et-last-child et_block_column et_pb_css_mix_blend_mode_passthrough preset--module--divi-column--9e85985c-9378-4c2b-9811-1132088c9b5f\">\n<div class=\"et_pb_image_0 et_pb_image et_animated et_pb_module et_block_module preset--module--divi-image--f2351508-70fe-4016-940f-51b6d68fdeb2\"><span class=\"et_pb_image_wrap\"><img alt=\"\" alt=\"\" decoding=\"async\" src=\"https:\/\/nirotec.de\/wp-content\/uploads\/2026\/04\/VFlansch.png\" width=\"512\" height=\"512\" srcset=\"https:\/\/nirotec.de\/wp-content\/uploads\/2026\/04\/VFlansch.png 512w\" sizes=\"(max-width: 512px) 100vw, 512px\" class=\"wp-image-780\" title=\"VFlange\" \/><\/span><\/div>\n<\/div>\n<\/div>\n\n<div class=\"et_pb_row_2 et_pb_row et_block_row preset--module--divi-row--8e156b44-2ed5-46df-bc81-3f8d33e765e9\">\n<div class=\"et_pb_column_4 et_pb_column et_pb_column_3_5 et_block_column et_pb_css_mix_blend_mode_passthrough preset--module--divi-column--9e85985c-9378-4c2b-9811-1132088c9b5f\">\n<div class=\"et_pb_image_1 et_pb_image et_animated et_pb_module et_block_module preset--module--divi-image--f2351508-70fe-4016-940f-51b6d68fdeb2\"><span class=\"et_pb_image_wrap\"><img alt=\"\" alt=\"\" decoding=\"async\" src=\"https:\/\/nirotec.de\/wp-content\/uploads\/2026\/03\/DSC_0024-scaled.jpg\" width=\"2560\" height=\"1700\" srcset=\"https:\/\/nirotec.de\/wp-content\/uploads\/2026\/03\/DSC_0024-scaled.jpg 2560w, https:\/\/nirotec.de\/wp-content\/uploads\/2026\/03\/DSC_0024-1280x850.jpg 1280w, https:\/\/nirotec.de\/wp-content\/uploads\/2026\/03\/DSC_0024-980x651.jpg 980w, https:\/\/nirotec.de\/wp-content\/uploads\/2026\/03\/DSC_0024-480x319.jpg 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) and (max-width: 980px) 980px, (min-width: 981px) and (max-width: 1280px) 1280px, (min-width: 1281px) 2560px, 100vw\" class=\"wp-image-670\" title=\"DSC_0024\" \/><\/span><\/div>\n<\/div>\n\n<div class=\"et_pb_column_5 et_pb_column et_pb_column_2_5 et-last-child et_block_column et_pb_css_mix_blend_mode_passthrough preset--module--divi-column--9e85985c-9378-4c2b-9811-1132088c9b5f\">\n<div class=\"et_pb_heading_2 et_pb_heading et_pb_module et_block_module preset--module--divi-heading--5a18cfdd-5b3d-4774-9791-d74740c65af0\"><div class=\"et_pb_heading_container\"><h3 class=\"et_pb_module_header\">Materials & Standards<\/h3><\/div><\/div>\n\n<div class=\"et_pb_text_2 et_pb_text et_pb_bg_layout_light et_pb_module et_block_module preset--module--divi-text--34400cc2-b2de-4275-b904-f1fc1d391eed\"><div class=\"et_pb_text_inner\"><p>Our flanges are manufactured from a wide range of industrial materials. Depending on application, temperature, pressure and corrosion requirements, we supply components from different material groups. <\/p>\n<p><em>Additional materials on request<\/em> <\/p>\n<\/div><\/div>\n\n<div class=\"et_pb_accordion_1 et_pb_accordion et_pb_module et_block_module\">\n<div class=\"et_pb_accordion_item_5 et_pb_accordion_item et_pb_toggle et_pb_module et_pb_toggle_open et_block_module preset--module--divi-accordion-item--default\"><h5 class=\"et_pb_toggle_title\">Unalloyed & low-alloy steels:<\/h5><div class=\"et_pb_toggle_content\"><p><span>P235GH \/ 1.0345<\/span><\/p>\n<p><span>P265GH \/ 1.0425<\/span><\/p>\n<p><span>P355GH \/ 1.0566<\/span><\/p>\n<p><span>L360 \/ 1.0582 \/ API 5L X52<\/span><\/p>\n<p><span>L415 \/ 1.8972 \/ API 5L X60<\/span><\/p>\n<p><span>WPB \/ A234 WPB \/ Carbon Steel<\/span><\/p>\n<p><span>WPHY70 \/ A860 WPHY70<\/span><\/p>\n<\/div><\/div>\n\n<div class=\"et_pb_accordion_item_6 et_pb_accordion_item et_pb_toggle et_pb_module et_pb_toggle_close et_block_module preset--module--divi-accordion-item--default\"><h5 class=\"et_pb_toggle_title\">Low-temperature steels:<\/h5><div class=\"et_pb_toggle_content\"><p><span>WPL3 \/ A420 WPL3<\/span><\/p>\n<p><span>WPL6 \/ A420 WPL6<\/span><\/p>\n<p><span>LF2 \/ A350 LF2<\/span><\/p>\n<p><span>P355NL2<\/span><\/p>\n<p><span>P460NL2<\/span><\/p>\n<p><span>10Ni14<\/span><\/p>\n<p><span>12Ni14 \/ 1.5637<\/span><\/p>\n<\/div><\/div>\n\n<div class=\"et_pb_accordion_item_7 et_pb_accordion_item et_pb_toggle et_pb_module et_pb_toggle_close et_block_module preset--module--divi-accordion-item--default\"><h5 class=\"et_pb_toggle_title\">Heat-resistant steels:<\/h5><div class=\"et_pb_toggle_content\"><p><span>16Mo3 \/ 1.5415<\/span><\/p>\n<p><span>WP11 \/ P11 \/ 1.7335 \/ 13CrMo4-5<\/span><\/p>\n<p><span>WP22 \/ P22 \/ 1.7380 \/ 10CrMo9-10<\/span><\/p>\n<p><span>WP91 \/ P91 \/ 1.4903 \/ X10CrMoVNb9-1<\/span><\/p>\n<p><span>WP92 \/ P92 \/ 1.4901 \/ X10CrWMoVNb9-2<\/span><\/p>\n<p><span>X20 \/ 1.4922 \/ X20CrMoV11-1<\/span><\/p>\n<p><span>WB36 \/ 1.6368 \/ 15NiCuMoNb5<\/span><\/p>\n<\/div><\/div>\n\n<div class=\"et_pb_accordion_item_8 et_pb_accordion_item et_pb_toggle et_pb_module et_pb_toggle_close et_block_module preset--module--divi-accordion-item--default\"><h5 class=\"et_pb_toggle_title\">Austenitic stainless steels:<\/h5><div class=\"et_pb_toggle_content\"><p><span>304 \/ 1.4301 \/ X5CrNi18-10 \/ V2A<\/span><\/p>\n<p><span>304L \/ 1.4307 \/ X2CrNi18-9 \/ TP304L \/ WP304L<\/span><\/p>\n<p><span>316L \/ 1.4404 \/ X2CrNiMo17-12-2 \/ TP316L \/ WP316L \/ V4A<\/span><\/p>\n<p><span>316Ti \/ 1.4571 \/ X6CrNiMoTi17-12-2 \/ TP316Ti \/ WP316Ti<\/span><\/p>\n<p><span>321 \/ 1.4541 \/ X6CrNiTi18-10 \/ TP321 \/ WP321<\/span><\/p>\n<p><span>347H \/ 1.4912 \/ X7CrNiNb18-10 \/ TP347H \/ WP347H<\/span><\/p>\n<p><span>310S \/ 1.4845 \/ X8CrNi25-21 \/ TP310S \/ WP310S<\/span><\/p>\n<\/div><\/div>\n\n<div class=\"et_pb_accordion_item_9 et_pb_accordion_item et_pb_toggle et_pb_module et_pb_toggle_close et_block_module preset--module--divi-accordion-item--default\"><h5 class=\"et_pb_toggle_title\">Duplex & Super Duplex<\/h5><div class=\"et_pb_toggle_content\"><p><span>Duplex \/ 1.4462 \/ X2CrNiMoN22-5-3 \/ UNS S31803 \/ F51<\/span><\/p>\n<p><span lang=\"EN-GB\">Super Duplex \/ 1.4410 \/ X2CrNiMoN25-7-4 \/ UNS S32750 \/ F53<\/span><\/p>\n<p><span lang=\"EN-GB\">Super Duplex \/ 1.4501 \/ X2CrNiMoCuWN25-7-4 \/ UNS S32760 \/ F55<\/span><\/p>\n<p><span>254SMO \/ 1.4547 \/ X1CrNiMoCuN20-18-7 \/ UNS S31254<\/span><\/p>\n<p><span>Alloy 926 \/ 1.4529 \/ X1NiCrMoCuN25-20-7 \/ UNS N08926<\/span><\/p>\n<p><span>904L \/ 1.4539 \/ X1NiCrMoCu25-20-5 \/ UNS N08904<\/span><\/p>\n<\/div><\/div>\n\n<div class=\"et_pb_accordion_item_10 et_pb_accordion_item et_pb_toggle et_pb_module et_pb_toggle_close et_block_module preset--module--divi-accordion-item--default\"><h5 class=\"et_pb_toggle_title\">Nickel alloys:<\/h5><div class=\"et_pb_toggle_content\"><p><span>Monel 400 \/ 2.4360 \/ UNS N04400<\/span><\/p>\n<p><span>Alloy 625 \/ 2.4856 \/ UNS N06625 \/ Inconel 625<\/span><\/p>\n<p><span>Alloy 825 \/ 2.4858 \/ UNS N08825 \/ Incoloy 825<\/span><\/p>\n<p><span>Alloy C-276 \/ 2.4819 \/ UNS N10276 \/ Hastelloy C-276<\/span><\/p>\n<p><span>Alloy 718 \/ 2.4668 \/ UNS N07718<\/span><\/p>\n<p><span>Alloy 800H \/ 1.4876H \/ UNS N08810<\/span><\/p>\n<p><span>Alloy C-22 \/ 2.4602 \/ UNS N06022 \/ Hastelloy C-22<\/span><\/p>\n<\/div><\/div>\n\n<div class=\"et_pb_accordion_item_11 et_pb_accordion_item et_pb_toggle et_pb_module et_pb_toggle_close et_block_module preset--module--divi-accordion-item--default\"><h5 class=\"et_pb_toggle_title\">Copper-nickel & special materials:<\/h5><div class=\"et_pb_toggle_content\"><p><span>CuNi10Fe1,6Mn \/ C70600 \/ 90-10 CuNi<\/span><\/p>\n<p><span>CuNi70\/30 \/ C71500<\/span><\/p>\n<p><span>Zirconium 702 \/ UNS R60702<\/span><\/p>\n<\/div><\/div>\n<\/div>\n<\/div>\n<\/div>\n\n<div class=\"et_pb_row_3 et_pb_row et_block_row preset--module--divi-row--8e156b44-2ed5-46df-bc81-3f8d33e765e9\">\n<div class=\"et_pb_column_6 et_pb_column et_pb_column_2_5 et_block_column et_pb_css_mix_blend_mode_passthrough preset--module--divi-column--9e85985c-9378-4c2b-9811-1132088c9b5f\">\n<div class=\"et_pb_heading_3 et_pb_heading et_pb_module et_block_module preset--module--divi-heading--5a18cfdd-5b3d-4774-9791-d74740c65af0\"><div class=\"et_pb_heading_container\"><h3 class=\"et_pb_module_header\">Quality testing & documentation<\/h3><\/div><\/div>\n\n<div class=\"et_pb_text_3 et_pb_text et_pb_bg_layout_light et_pb_module et_block_module preset--module--divi-text--34400cc2-b2de-4275-b904-f1fc1d391eed\"><div class=\"et_pb_text_inner\"><div>\n<p class=\"yiv1942176570MsoNormal\"><span>Manufacturing and testing within the scope of our QM system to ISO 9001 and AD 2000. Typical testing services: <\/span><\/p>\n<ul type=\"disc\">\n<li class=\"yiv1942176570MsoNormal\"><span>Visual inspection<\/span><\/li>\n<li class=\"yiv1942176570MsoNormal\"><span>Dimensional inspection and sealing face inspection<\/span><\/li>\n<li class=\"yiv1942176570MsoNormal\"><span>Non-destructive testing (UT, RT, PT, MT)<\/span><\/li>\n<li class=\"yiv1942176570MsoNormal\"><span>Positive Material Identification (PMI)<\/span><\/li>\n<li class=\"yiv1942176570MsoNormal\"><span>Hardness testing<\/span><\/li>\n<li class=\"yiv1942176570MsoNormal\"><span>Ferrite measurement for duplex materials<\/span><\/li>\n<li class=\"yiv1942176570MsoNormal\"><span>Third-party inspections by T\u00dcV, Bureau Veritas, DNV or customer inspectors<\/span><\/li>\n<li class=\"yiv1942176570MsoNormal\"><span>Test certificates to EN 10204 (3.1 \/ 3.2)<\/span><\/li>\n<li class=\"yiv1942176570MsoNormal\"><span>Project-specific ITPs with hold and witness points on request<\/span><\/li>\n<\/ul>\n<p class=\"yiv1942176570MsoNormal\"><span>In addition to standard flanges from our supply program, we also manufacture special flanges to drawing on request \u2013 for dimensions and geometries outside standardized programs.<\/span><\/p>\n<\/div>\n<\/div><\/div>\n\n<div class=\"et_pb_heading_4 et_pb_heading et_pb_module et_block_module preset--module--divi-heading--default\"><div class=\"et_pb_heading_container\"><h3 class=\"et_pb_module_header\">Materials<\/h3><\/div><\/div>\n<\/div>\n\n<div class=\"et_pb_column_7 et_pb_column et_pb_column_3_5 et-last-child et_block_column et_pb_css_mix_blend_mode_passthrough preset--module--divi-column--9e85985c-9378-4c2b-9811-1132088c9b5f\">\n<div class=\"et_pb_image_2 et_pb_image et_animated et_pb_module et_block_module preset--module--divi-image--f2351508-70fe-4016-940f-51b6d68fdeb2\"><span class=\"et_pb_image_wrap\"><img alt=\"\" alt=\"\" decoding=\"async\" src=\"https:\/\/nirotec.de\/wp-content\/uploads\/2026\/04\/Flanschen-Qualitaet.jpg\" width=\"1920\" height=\"1080\" srcset=\"https:\/\/nirotec.de\/wp-content\/uploads\/2026\/04\/Flanschen-Qualitaet.jpg 1920w, https:\/\/nirotec.de\/wp-content\/uploads\/2026\/04\/Flanschen-Qualitaet-1280x720.jpg 1280w, https:\/\/nirotec.de\/wp-content\/uploads\/2026\/04\/Flanschen-Qualitaet-980x551.jpg 980w, https:\/\/nirotec.de\/wp-content\/uploads\/2026\/04\/Flanschen-Qualitaet-480x270.jpg 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) and (max-width: 980px) 980px, (min-width: 981px) and (max-width: 1280px) 1280px, (min-width: 1281px) 1920px, 100vw\" class=\"wp-image-931\" title=\"Flange quality\" \/><\/span><\/div>\n<\/div>\n<\/div>\n<div class=\"et_pb_bottom_inside_divider et-no-transition\"><\/div><\/div>\n\n<div class=\"et_pb_section_2 et_pb_section et_section_regular et_block_section section_has_divider et_pb_top_divider preset--module--divi-section--default\"><div class=\"et_pb_top_inside_divider et-no-transition\"><\/div>\n<div class=\"et_pb_row_4 et_pb_row et_block_row preset--module--divi-row--8e156b44-2ed5-46df-bc81-3f8d33e765e9\">\n<div class=\"et_pb_column_8 et_pb_column et_pb_column_4_4 et-last-child et_block_column et_pb_css_mix_blend_mode_passthrough preset--module--divi-column--9e85985c-9378-4c2b-9811-1132088c9b5f\">\n<div class=\"et_pb_heading_5 et_pb_heading et_pb_module et_block_module preset--module--divi-heading--5a18cfdd-5b3d-4774-9791-d74740c65af0\"><div class=\"et_pb_heading_container\"><h4 class=\"et_pb_module_header\">Applications & Industries<\/h4><\/div><\/div>\n\n<div class=\"et_pb_heading_6 et_pb_heading et_pb_module et_block_module preset--module--divi-heading--5a18cfdd-5b3d-4774-9791-d74740c65af0\"><div class=\"et_pb_heading_container\"><h2 class=\"et_pb_module_header\">In use worldwide<\/h2><\/div><\/div>\n\n<div class=\"et_pb_text_4 et_pb_text et_pb_bg_layout_light et_pb_module et_block_module preset--module--divi-text--34400cc2-b2de-4275-b904-f1fc1d391eed\"><div class=\"et_pb_text_inner\"><p><span data-canva-clipboard=\"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\"><\/span><\/p>\n<div>\n<p>Our flanges are key connecting elements in industrial piping systems and enable safe installation and maintenance of complex plant components.<\/p>\n<\/div>\n<\/div><\/div>\n<\/div>\n<\/div>\n\n<div class=\"et_pb_row_5 et_pb_row et_pb_gutters1.1 et_block_row preset--module--divi-row--default\">\n<div class=\"et_pb_column_9 et_pb_column et_pb_column_1_3 et_block_column et_pb_css_mix_blend_mode_passthrough et_animated et_clickable preset--module--divi-column--792dafc4-cf40-4555-93cd-922c6d1ae2e8\">\n<div class=\"et_pb_heading_7 et_pb_heading et_pb_module et_block_module preset--module--divi-heading--d4b6f4b3-5fe3-442a-9684-6fb970291d6f\"><div class=\"et_pb_heading_container\"><h6 class=\"et_pb_module_header\">Energy and Power Plant Facilities<\/h6><\/div><\/div>\n<\/div>\n\n<div class=\"et_pb_column_10 et_pb_column et_pb_column_1_3 et_block_column et_pb_css_mix_blend_mode_passthrough et_animated et_clickable preset--module--divi-column--792dafc4-cf40-4555-93cd-922c6d1ae2e8\">\n<div class=\"et_pb_heading_8 et_pb_heading et_pb_module et_block_module preset--module--divi-heading--d4b6f4b3-5fe3-442a-9684-6fb970291d6f\"><div class=\"et_pb_heading_container\"><h6 class=\"et_pb_module_header\">Nuclear Technology<\/h6><\/div><\/div>\n<\/div>\n\n<div class=\"et_pb_column_11 et_pb_column et_pb_column_1_3 et-last-child et_block_column et_pb_css_mix_blend_mode_passthrough et_animated et_clickable preset--module--divi-column--792dafc4-cf40-4555-93cd-922c6d1ae2e8\">\n<div class=\"et_pb_heading_9 et_pb_heading et_pb_module et_block_module preset--module--divi-heading--d4b6f4b3-5fe3-442a-9684-6fb970291d6f\"><div class=\"et_pb_heading_container\"><h6 class=\"et_pb_module_header\">Hydrogen and Energy Infrastructure <\/h6><\/div><\/div>\n<\/div>\n<\/div>\n\n<div class=\"et_pb_row_6 et_pb_row et_pb_gutters1.1 et_block_row preset--module--divi-row--default\">\n<div class=\"et_pb_column_12 et_pb_column et_pb_column_1_3 et_block_column et_pb_css_mix_blend_mode_passthrough et_animated et_clickable preset--module--divi-column--792dafc4-cf40-4555-93cd-922c6d1ae2e8\">\n<div class=\"et_pb_heading_10 et_pb_heading et_pb_module et_block_module preset--module--divi-heading--d4b6f4b3-5fe3-442a-9684-6fb970291d6f\"><div class=\"et_pb_heading_container\"><h6 class=\"et_pb_module_header\">Chemical and Process Industry<\/h6><\/div><\/div>\n<\/div>\n\n<div class=\"et_pb_column_13 et_pb_column et_pb_column_1_3 et_block_column et_pb_css_mix_blend_mode_passthrough et_animated et_clickable preset--module--divi-column--792dafc4-cf40-4555-93cd-922c6d1ae2e8\">\n<div class=\"et_pb_heading_11 et_pb_heading et_pb_module et_block_module preset--module--divi-heading--d4b6f4b3-5fe3-442a-9684-6fb970291d6f\"><div class=\"et_pb_heading_container\"><h6 class=\"et_pb_module_header\">Refineries and Offshore Facilities<\/h6><\/div><\/div>\n<\/div>\n\n<div class=\"et_pb_column_14 et_pb_column et_pb_column_1_3 et-last-child et_block_column et_pb_css_mix_blend_mode_passthrough et_animated et_clickable preset--module--divi-column--792dafc4-cf40-4555-93cd-922c6d1ae2e8\">\n<div class=\"et_pb_heading_12 et_pb_heading et_pb_module et_block_module preset--module--divi-heading--d4b6f4b3-5fe3-442a-9684-6fb970291d6f\"><div class=\"et_pb_heading_container\"><h6 class=\"et_pb_module_header\">Apparatus and Mechanical Engineering<\/h6><\/div><\/div>\n<\/div>\n<\/div>\n<\/div>\n\n<div class=\"et_pb_section_3 et_pb_section et_section_regular et_block_section preset--module--divi-section--default\">\n<div class=\"et_pb_row_7 et_pb_row et_block_row preset--module--divi-row--default\">\n<div class=\"et_pb_column_15 et_pb_column et_pb_column_4_4 et-last-child et_block_column et_pb_css_mix_blend_mode_passthrough preset--module--divi-column--default\">\n<div class=\"et_pb_heading_13 et_pb_heading et_pb_module et_block_module preset--module--divi-heading--313bf6fa-117a-4c74-8c6b-32a0231f37b6\"><div class=\"et_pb_heading_container\"><h3 class=\"et_pb_module_header\">Looking for a special size or special material? <\/h3><\/div><\/div>\n\n<div class=\"et_pb_text_5 et_pb_text et_pb_bg_layout_light et_pb_module et_block_module preset--module--divi-text--21709439-0a40-4b55-809c-519da0f52d05\"><div class=\"et_pb_text_inner\"><p><span>At Nirotec, we also manufacture flanges outside the standard range \u2013 heavy-wall, in special materials, with extended through-hub lengths. Speak to our sales team directly.  <\/span><\/p>\n<\/div><\/div>\n<\/div>\n<\/div>\n\n<div class=\"et_pb_row_8 et_pb_row et_pb_equal_columns et_block_row preset--module--divi-row--2757258f-f9e3-4ea5-9fad-5c1c4d19615e\">\n<div class=\"et_pb_column_16 et_pb_column et_pb_column_1_3 et_block_column et_pb_css_mix_blend_mode_passthrough et_animated preset--module--divi-column--9274ca6d-6c16-46a9-9bc2-465d602a1a54\">\n<div class=\"et_pb_icon_0 et_pb_icon et_animated et_pb_module et_block_module\"><span class=\"et_pb_icon_wrap\"><span class=\"et-pb-icon\">\uf879<\/span><\/span><\/div>\n\n<div class=\"et_pb_blurb_0 et_pb_blurb et_pb_bg_layout_light et_pb_text_align_center et_pb_blurb_position_top et_pb_module et_block_module ai_ignore_all preset--module--divi-blurb--ce555799-3740-43b9-a08c-aea69403224a\"><div class=\"et_pb_blurb_content\"><div class=\"et_pb_blurb_container\"><div class=\"et_pb_blurb_description\"><p><span>+49 (0) 2303\/985 - 0<\/span><\/p>\n<\/div><\/div><\/div><\/div>\n<\/div>\n\n<div class=\"et_pb_column_17 et_pb_column et_pb_column_1_3 et_block_column et_pb_css_mix_blend_mode_passthrough et_animated preset--module--divi-column--9274ca6d-6c16-46a9-9bc2-465d602a1a54\">\n<div class=\"et_pb_icon_1 et_pb_icon et_animated et_pb_module et_block_module\"><span class=\"et_pb_icon_wrap\"><span class=\"et-pb-icon\">\uf0e0<\/span><\/span><\/div>\n\n<div class=\"et_pb_blurb_1 et_pb_blurb et_pb_bg_layout_light et_pb_text_align_center et_pb_blurb_position_top et_pb_module et_block_module ai_ignore_all preset--module--divi-blurb--ce555799-3740-43b9-a08c-aea69403224a\"><div class=\"et_pb_blurb_content\"><div class=\"et_pb_blurb_container\"><div class=\"et_pb_blurb_description\"><p><a href=\"mailto:info@nirotec.de\" class=\"animsition-link\">info@nirotec.de<\/a><\/p>\n<\/div><\/div><\/div><\/div>\n<\/div>\n\n<div class=\"et_pb_column_18 et_pb_column et_pb_column_1_3 et-last-child et_block_column et_pb_css_mix_blend_mode_passthrough et_animated preset--module--divi-column--9274ca6d-6c16-46a9-9bc2-465d602a1a54\">\n<div class=\"et_pb_icon_2 et_pb_icon et_animated et_pb_module et_block_module\"><span class=\"et_pb_icon_wrap\"><span class=\"et-pb-icon\">\ue081<\/span><\/span><\/div>\n\n<div class=\"et_pb_blurb_2 et_pb_blurb et_pb_bg_layout_light et_pb_text_align_center et_pb_blurb_position_top et_pb_module et_block_module ai_ignore_all preset--module--divi-blurb--ce555799-3740-43b9-a08c-aea69403224a\"><div class=\"et_pb_blurb_content\"><div class=\"et_pb_blurb_container\"><div class=\"et_pb_blurb_description\"><p><span>Otto-Hahn-Str. 4<\/span><br \/><span>59423 Unna<\/span><\/p>\n<\/div><\/div><\/div><\/div>\n<\/div>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"parent":2265,"menu_order":4,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_seopress_titles_title":"Industrial Flanges for Piping Systems | Nirotec","_seopress_titles_desc":"Nirotec supplies high-quality flanges made from stainless steel, duplex and special alloys for industrial piping systems and demanding 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