{"id":2659,"date":"2026-03-09T10:22:39","date_gmt":"2026-03-09T10:22:39","guid":{"rendered":"https:\/\/nirotec.de\/produits\/reductions\/"},"modified":"2026-08-29T16:42:37","modified_gmt":"2026-08-29T16:42:37","slug":"reductions","status":"publish","type":"page","link":"https:\/\/nirotec.de\/fr\/produits\/reductions\/","title":{"rendered":"R\u00e9ductions"},"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--css 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\/04\/Reduzierungen-Head.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--b343cfc0-d228-4acb-938e-84d841a73d8d\">\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--bcaada1d-86a7-4ded-9161-d576ab003d02\">\n<div class=\"et_pb_heading_0 et_pb_heading et_pb_module et_block_module preset--module--divi-heading--da76b443-dea4-411c-aca9-fa26cf553d25\"><div class=\"et_pb_heading_container\"><h1 class=\"et_pb_module_header\">R\u00e9ductions sans soudure, concentriques et excentriques, selon EN 10253 et ASME B16.9<\/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--573b946b-c3a6-4eac-94f7-1cd8df055f63\"><div class=\"et_pb_text_inner\"><p><span data-canva-clipboard=\"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\"><\/span><\/p>\n<p><\/p>\n<div>\n<p><span>Chez Nirotec, nous fabriquons des r\u00e9ductions sans soudure pour syst\u00e8mes de tuyauterie industriels \u2013 dans notre propre production \u00e0 Unna. Des dimensions standard en aciers non alli\u00e9s jusqu\u2019aux ex\u00e9cutions sp\u00e9ciales en duplex, P91 ou alliages de nickel \u2013 conformes aux normes, document\u00e9es et livr\u00e9es dans les d\u00e9lais.<\/span><\/p>\n<\/div>\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=\"\/fr\/contact\/\">Vers le formulaire de contact<\/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--bcaada1d-86a7-4ded-9161-d576ab003d02\"><\/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--b343cfc0-d228-4acb-938e-84d841a73d8d\">\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--bcaada1d-86a7-4ded-9161-d576ab003d02\">\n<div class=\"et_pb_heading_1 et_pb_heading et_pb_module et_block_module preset--module--divi-heading--da76b443-dea4-411c-aca9-fa26cf553d25\"><div class=\"et_pb_heading_container\"><h3 class=\"et_pb_module_header\">Fabrication et caract\u00e9ristiques<\/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--573b946b-c3a6-4eac-94f7-1cd8df055f63\"><div class=\"et_pb_text_inner\"><p><span data-canva-clipboard=\"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\"><\/span><\/p>\n<p><\/p>\n<div>\n<p><span>Nos r\u00e9ductions sont fabriqu\u00e9es \u00e0 partir de tubes sans soudure et form\u00e9es \u00e0 froid ou \u00e0 chaud selon le mat\u00e9riau, la dimension et les exigences. La g\u00e9om\u00e9trie de transition est obtenue par des proc\u00e9d\u00e9s de formage sp\u00e9cialement con\u00e7us, qui garantissent une r\u00e9partition homog\u00e8ne de l\u2019\u00e9paisseur de paroi et des caract\u00e9ristiques d\u2019\u00e9coulement optimales.<\/span><\/p>\n<\/div>\n<p><\/p>\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\">Ex\u00e9cutions types :<\/h5><div class=\"et_pb_toggle_content\"><p class=\"yiv9967213958MsoNormal\"><b><span>R\u00e9duction concentrique :<\/span><\/b><\/p>\n<p><\/p>\n<p class=\"yiv9967213958MsoNormal\"><span> R\u00e9duction de diam\u00e8tre sym\u00e9trique \u2013 pour conduites verticales et applications sans exigences de purge ou de vidange.<\/span><\/p>\n<p><\/p>\n<p class=\"yiv9967213958MsoNormal\"><b><span>R\u00e9duction excentrique :<\/span><\/b><span> <\/span><\/p>\n<p><\/p>\n<p class=\"yiv9967213958MsoNormal\"><span>Ex\u00e9cution \u00e0 g\u00e9n\u00e9ratrice droite d\u2019un c\u00f4t\u00e9 \u2013 pour conduites horizontales, entr\u00e9es de pompes ainsi que pour les applications avec exigences de purge ou de vidange.<\/span><\/p>\n<p><\/p>\n<p class=\"yiv9967213958MsoNormal\"><b><span>Ex\u00e9cutions sp\u00e9ciales :<\/span><\/b><span><\/span><\/p>\n<p><\/p>\n<ul type=\"disc\">\n<li class=\"yiv9967213958MsoNormal\"><span>Longueurs sp\u00e9cifiques au projet hors norme<\/span><\/li>\n<li class=\"yiv9967213958MsoNormal\"><span>Combinaisons de diam\u00e8tres sp\u00e9ciales sur plan<\/span><\/li>\n<li class=\"yiv9967213958MsoNormal\"><span>Ex\u00e9cutions \u00e0 forte \u00e9paisseur pour applications haute pression<\/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\">Caract\u00e9ristiques techniques<\/h5><div class=\"et_pb_toggle_content\"><ul type=\"disc\">\n<li class=\"yiv9967213958MsoNormal\"><span>Ex\u00e9cutions concentriques et excentriques<\/span><\/li>\n<li class=\"yiv9967213958MsoNormal\"><span>Diff\u00e9rentes combinaisons de diam\u00e8tres<\/span><\/li>\n<li class=\"yiv9967213958MsoNormal\"><span>\u00c9paisseurs de paroi jusqu\u2019\u00e0 100 mm<\/span><\/li>\n<li class=\"yiv9967213958MsoNormal\"><span>Durchmesser bis 610 mm<\/span><\/li>\n<li class=\"yiv9967213958MsoNormal\"><span>Longueurs et g\u00e9om\u00e9tries sp\u00e9ciales sur plan possibles<\/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\">Normes et r\u00e9f\u00e9rentiels<\/h5><div class=\"et_pb_toggle_content\"><ul type=\"disc\">\n<li class=\"yiv9967213958MsoNormal\"><b><span>EN 10253-2 \/ EN 10253-4<\/span><\/b><span> \u2013 Raccords de tuyauterie sans soudure Europe<\/span><\/li>\n<li class=\"yiv9967213958MsoNormal\"><b><span lang=\"EN-GB\">ASME B16.9<\/span><\/b><span lang=\"EN-GB\"> \u2013 Factory-Made Wrought Buttwelding Fittings<\/span><\/li>\n<li class=\"yiv9967213958MsoNormal\"><b><span>EN 13480<\/span><\/b><span> \u2013 Tuyauteries industrielles m\u00e9talliques<\/span><\/li>\n<li class=\"yiv9967213958MsoNormal\"><b><span>AD 2000<\/span><\/b><span> \u2013 \u00c9quipements sous pression Allemagne<\/span><\/li>\n<li class=\"yiv9967213958MsoNormal\"><b><span>ASME B31.1<\/span><\/b><span> \u2013 Power Piping<\/span><\/li>\n<li class=\"yiv9967213958MsoNormal\"><b><span>ASME B31.3<\/span><\/b><span> \u2013 Process Piping<\/span><\/li>\n<li class=\"yiv9967213958MsoNormal\"><b><span>ASME B31.12<\/span><\/b><span> \u2013 Hydrogen Piping<\/span><\/li>\n<li class=\"yiv9967213958MsoNormal\"><b><span>NORSOK M-630<\/span><\/b><span> \u2013 Composants de tuyauterie offshore<\/span><\/li>\n<li class=\"yiv9967213958MsoNormal\"><b><span>KTA 3201 \/ RCC-M<\/span><\/b><span> \u2013 Technologie nucl\u00e9aire<\/span><\/li>\n<li class=\"yiv9967213958MsoNormal\"><span>Sp\u00e9cifications et plans sp\u00e9cifiques au projet sur demande<\/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--bcaada1d-86a7-4ded-9161-d576ab003d02\">\n<div class=\"et_pb_image_0 et_pb_image et_animated et_pb_module et_block_module preset--module--divi-image--5e2f26b1-1c17-43e3-9a38-104ca8582faa\"><a href=\"https:\/\/nirotec.de\/wp-content\/uploads\/2026\/03\/PDB_Reduzierungen.pdf\"><span class=\"et_pb_image_wrap\"><img alt=\"\" decoding=\"async\" src=\"https:\/\/nirotec.de\/wp-content\/uploads\/2026\/04\/PDB-Reduzierungen.png\" width=\"512\" height=\"512\" srcset=\"https:\/\/nirotec.de\/wp-content\/uploads\/2026\/04\/PDB-Reduzierungen.png 512w, https:\/\/nirotec.de\/wp-content\/uploads\/2026\/04\/PDB-Reduzierungen-480x480.png 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 512px, 100vw\" class=\"wp-image-924\" title=\"PDB-Reduzierungen\" \/><\/span><\/a><\/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--default\"><div class=\"et_pb_text_inner\"><p style=\"text-align: center;\"><a href=\"https:\/\/nirotec.de\/wp-content\/uploads\/2026\/03\/PDB_Reduzierungen.pdf\">Reduzierungen.pdf<\/a><\/p>\n<\/div><\/div>\n<\/div>\n<\/div>\n\n<div class=\"et_pb_row_2 et_pb_row et_block_row preset--module--divi-row--b343cfc0-d228-4acb-938e-84d841a73d8d\">\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--bcaada1d-86a7-4ded-9161-d576ab003d02\">\n<div class=\"et_pb_image_1 et_pb_image et_animated et_pb_module et_block_module preset--module--divi-image--5e2f26b1-1c17-43e3-9a38-104ca8582faa\"><span class=\"et_pb_image_wrap\"><img alt=\"\" decoding=\"async\" src=\"https:\/\/nirotec.de\/wp-content\/uploads\/2026\/04\/Reduzierungen-.jpg\" width=\"1920\" height=\"1080\" srcset=\"https:\/\/nirotec.de\/wp-content\/uploads\/2026\/04\/Reduzierungen-.jpg 1920w\" sizes=\"(max-width: 1920px) 100vw, 1920px\" class=\"wp-image-811\" title=\"R\u00e9ductions\" \/><\/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--bcaada1d-86a7-4ded-9161-d576ab003d02\">\n<div class=\"et_pb_heading_2 et_pb_heading et_pb_module et_block_module preset--module--divi-heading--da76b443-dea4-411c-aca9-fa26cf553d25\"><div class=\"et_pb_heading_container\"><h3 class=\"et_pb_module_header\">Mat\u00e9riaux et normes<\/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--573b946b-c3a6-4eac-94f7-1cd8df055f63\"><div class=\"et_pb_text_inner\"><p>Nos r\u00e9ductions sont fabriqu\u00e9es dans une grande vari\u00e9t\u00e9 de mat\u00e9riaux industriels. Selon l\u2019application, la temp\u00e9rature, la pression et les exigences de r\u00e9sistance \u00e0 la corrosion, nous fournissons des composants issus de diff\u00e9rents groupes de mat\u00e9riaux.<\/p>\n<p><\/p>\n<p class=\"yiv9967213958MsoNormal\"><span>Autres mat\u00e9riaux et exigences mati\u00e8res sp\u00e9cifiques au projet sur demande.<\/span><\/p>\n<p><\/p>\n<p><span data-canva-clipboard=\"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\"><\/span><\/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_3 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\">Aciers non alli\u00e9s et faiblement alli\u00e9s :<\/h5><div class=\"et_pb_toggle_content\"><p><span>P235GH \/ 1.0345<\/span><\/p>\n<p><\/p>\n<p><span>P265GH \/ 1.0425<\/span><\/p>\n<p><\/p>\n<p><span>P355GH \/ 1.0566<\/span><\/p>\n<p><\/p>\n<p><span>L360 \/ 1.0582 \/ API 5L X52<\/span><\/p>\n<p><\/p>\n<p><span>L415 \/ 1.8972 \/ API 5L X60<\/span><\/p>\n<p><\/p>\n<p><span>WPB \/ A234 WPB \/ Carbon Steel<\/span><\/p>\n<p><\/p>\n<p><span>WPHY70 \/ A860 WPHY70<\/span><\/p>\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\">Aciers pour basses temp\u00e9ratures :<\/h5><div class=\"et_pb_toggle_content\"><p><span>WPL3 \/ A420 WPL3<\/span><\/p>\n<p><\/p>\n<p><span>WPL6 \/ A420 WPL6<\/span><\/p>\n<p><\/p>\n<p><span>LF2 \/ A350 LF2<\/span><\/p>\n<p><\/p>\n<p><span>P355NL2<\/span><\/p>\n<p><\/p>\n<p><span>P460NL2<\/span><\/p>\n<p><\/p>\n<p><span>10Ni14<\/span><\/p>\n<p><\/p>\n<p><span>12Ni14 \/ 1.5637<\/span><\/p>\n<\/div><\/div>\n\n<div class=\"et_pb_accordion_item_5 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\">Aciers r\u00e9sistant au fluage :<\/h5><div class=\"et_pb_toggle_content\"><p><span>16Mo3 \/ 1.5415<\/span><\/p>\n<p><\/p>\n<p><span>WP11 \/ P11 \/ 1.7335 \/ 13CrMo4-5<\/span><\/p>\n<p><\/p>\n<p><span>WP22 \/ P22 \/ 1.7380 \/ 10CrMo9-10<\/span><\/p>\n<p><\/p>\n<p><span>WP91 \/ P91 \/ 1.4903 \/ X10CrMoVNb9-1<\/span><\/p>\n<p><\/p>\n<p><span>WP92 \/ P92 \/ 1.4901 \/ X10CrWMoVNb9-2<\/span><\/p>\n<p><\/p>\n<p><span>X20 \/ 1.4922 \/ X20CrMoV11-1<\/span><\/p>\n<p><\/p>\n<p><span>WB36 \/ 1.6368 \/ 15NiCuMoNb5<\/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\">Aciers inoxydables aust\u00e9nitiques :<\/h5><div class=\"et_pb_toggle_content\"><p><span>304 \/ 1.4301 \/ X5CrNi18-10 \/ V2A<\/span><\/p>\n<p><\/p>\n<p><span>304L \/ 1.4307 \/ X2CrNi18-9 \/ TP304L \/ WP304L<\/span><\/p>\n<p><\/p>\n<p><span>316L \/ 1.4404 \/ X2CrNiMo17-12-2 \/ TP316L \/ WP316L \/ V4A<\/span><\/p>\n<p><\/p>\n<p><span>316Ti \/ 1.4571 \/ X6CrNiMoTi17-12-2 \/ TP316Ti \/ WP316Ti<\/span><\/p>\n<p><\/p>\n<p><span>321 \/ 1.4541 \/ X6CrNiTi18-10 \/ TP321 \/ WP321<\/span><\/p>\n<p><\/p>\n<p><span>347H \/ 1.4912 \/ X7CrNiNb18-10 \/ TP347H \/ WP347H<\/span><\/p>\n<p><\/p>\n<p><span>310S \/ 1.4845 \/ X8CrNi25-21 \/ TP310S \/ WP310S<\/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\">Duplex et super duplex<\/h5><div class=\"et_pb_toggle_content\"><p><span>Duplex \/ 1.4462 \/ X2CrNiMoN22-5-3 \/ UNS S31803 \/ F51<\/span><\/p>\n<p><\/p>\n<p><span lang=\"EN-GB\">Super Duplex \/ 1.4410 \/ X2CrNiMoN25-7-4 \/ UNS S32750 \/ F53<\/span><\/p>\n<p><\/p>\n<p><span lang=\"EN-GB\">Super Duplex \/ 1.4501 \/ X2CrNiMoCuWN25-7-4 \/ UNS S32760 \/ F55<\/span><\/p>\n<p><\/p>\n<p><span>254SMO \/ 1.4547 \/ X1CrNiMoCuN20-18-7 \/ UNS S31254<\/span><\/p>\n<p><\/p>\n<p><span>Alloy 926 \/ 1.4529 \/ X1NiCrMoCuN25-20-7 \/ UNS N08926<\/span><\/p>\n<p><\/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_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\">Alliages de nickel :<\/h5><div class=\"et_pb_toggle_content\"><p><span>Monel 400 \/ 2.4360 \/ UNS N04400<\/span><\/p>\n<p><\/p>\n<p><span>Alloy 625 \/ 2.4856 \/ UNS N06625 \/ Inconel 625<\/span><\/p>\n<p><\/p>\n<p><span>Alloy 825 \/ 2.4858 \/ UNS N08825 \/ Incoloy 825<\/span><\/p>\n<p><\/p>\n<p><span>Alloy C-276 \/ 2.4819 \/ UNS N10276 \/ Hastelloy C-276<\/span><\/p>\n<p><\/p>\n<p><span>Alloy 718 \/ 2.4668 \/ UNS N07718<\/span><\/p>\n<p><\/p>\n<p><span>Alloy 800H \/ 1.4876H \/ UNS N08810<\/span><\/p>\n<p><\/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_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\">Cupronickels et mat\u00e9riaux sp\u00e9ciaux :<\/h5><div class=\"et_pb_toggle_content\"><p><span>CuNi10Fe1,6Mn \/ C70600 \/ 90-10 CuNi<\/span><\/p>\n<p><\/p>\n<p><span>CuNi70\/30 \/ C71500<\/span><\/p>\n<p><\/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--b343cfc0-d228-4acb-938e-84d841a73d8d\">\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--bcaada1d-86a7-4ded-9161-d576ab003d02\">\n<div class=\"et_pb_heading_3 et_pb_heading et_pb_module et_block_module preset--module--divi-heading--da76b443-dea4-411c-aca9-fa26cf553d25\"><div class=\"et_pb_heading_container\"><h3 class=\"et_pb_module_header\">Contr\u00f4le qualit\u00e9 et documentation<\/h3><\/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--573b946b-c3a6-4eac-94f7-1cd8df055f63\"><div class=\"et_pb_text_inner\"><p class=\"yiv9967213958MsoNormal\"><span>Fabrication et contr\u00f4le dans le cadre de notre syst\u00e8me de management de la qualit\u00e9 selon ISO 9001 et AD 2000. Prestations de contr\u00f4le types :<\/span><\/p>\n<p><\/p>\n<ul type=\"disc\">\n<li class=\"yiv9967213958MsoNormal\"><span>Inspection visuelle<\/span><\/li>\n<li class=\"yiv9967213958MsoNormal\"><span>Contr\u00f4le dimensionnel et mesure de l\u2019\u00e9paisseur de paroi<\/span><\/li>\n<li class=\"yiv9967213958MsoNormal\"><span>Contr\u00f4les non destructifs (UT, RT, PT, MT)<\/span><\/li>\n<li class=\"yiv9967213958MsoNormal\"><span>Identification positive des mat\u00e9riaux (PMI)<\/span><\/li>\n<li class=\"yiv9967213958MsoNormal\"><span>Essais de duret\u00e9<\/span><\/li>\n<li class=\"yiv9967213958MsoNormal\"><span>Mesure de la teneur en ferrite sur les mat\u00e9riaux duplex<\/span><\/li>\n<li class=\"yiv9967213958MsoNormal\"><span>R\u00e9ceptions externes par T\u00dcV, Bureau Veritas, DNV ou inspecteurs clients<\/span><\/li>\n<li class=\"yiv9967213958MsoNormal\"><span>Certificats de contr\u00f4le selon EN 10204 (3.1 \/ 3.2)<\/span><\/li>\n<li class=\"yiv9967213958MsoNormal\"><span>ITP sp\u00e9cifiques au projet avec points d\u2019arr\u00eat et points de convocation sur demande<\/span><\/li>\n<\/ul>\n<p><\/p>\n<p><span data-canva-clipboard=\"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\"><\/span><\/p>\n<\/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--bcaada1d-86a7-4ded-9161-d576ab003d02\">\n<div class=\"et_pb_image_2 et_pb_image et_animated et_pb_module et_block_module preset--module--divi-image--5e2f26b1-1c17-43e3-9a38-104ca8582faa\"><span class=\"et_pb_image_wrap\"><img alt=\"\" decoding=\"async\" src=\"https:\/\/nirotec.de\/wp-content\/uploads\/2026\/04\/Buttweld.jpg\" width=\"1920\" height=\"1080\" srcset=\"https:\/\/nirotec.de\/wp-content\/uploads\/2026\/04\/Buttweld.jpg 1920w\" sizes=\"(max-width: 1920px) 100vw, 1920px\" class=\"wp-image-828\" title=\"Buttweld\" \/><\/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--b343cfc0-d228-4acb-938e-84d841a73d8d\">\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--bcaada1d-86a7-4ded-9161-d576ab003d02\">\n<div class=\"et_pb_heading_4 et_pb_heading et_pb_module et_block_module preset--module--divi-heading--da76b443-dea4-411c-aca9-fa26cf553d25\"><div class=\"et_pb_heading_container\"><h4 class=\"et_pb_module_header\">Applications et secteurs<\/h4><\/div><\/div>\n\n<div class=\"et_pb_heading_5 et_pb_heading et_pb_module et_block_module preset--module--divi-heading--da76b443-dea4-411c-aca9-fa26cf553d25\"><div class=\"et_pb_heading_container\"><h2 class=\"et_pb_module_header\">Utilis\u00e9s dans le monde entier<\/h2><\/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--573b946b-c3a6-4eac-94f7-1cd8df055f63\"><div class=\"et_pb_text_inner\"><p>Les raccords de tuyauterie tels que les r\u00e9ductions, les coudes et les t\u00e9s comptent parmi les \u00e9l\u00e9ments d\u2019assemblage essentiels des syst\u00e8mes de tuyauterie modernes et sont utilis\u00e9s en particulier dans les installations \u00e9nerg\u00e9tiques, chimiques et de proc\u00e9d\u00e9s.<\/p>\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_6 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\">\u00c9nergie et centrales \u00e9lectriques<\/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_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\">Technologie nucl\u00e9aire<\/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_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\">Hydrog\u00e8ne et infrastructures \u00e9nerg\u00e9tiques  <\/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_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\">Industrie chimique et des proc\u00e9d\u00e9s<\/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_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\">Raffineries et installations offshore<\/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_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\">Construction d\u2019appareils et de machines<\/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_12 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\">Vous cherchez une dimension ou un mat\u00e9riau sp\u00e9cial ?<\/h3><\/div><\/div>\n\n<div class=\"et_pb_text_6 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>Chez Nirotec, nous fabriquons \u00e9galement des r\u00e9ductions hors programme standard \u2013 contactez directement notre service commercial.\u00a0<\/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":2652,"menu_order":3,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_seopress_titles_title":"R\u00e9ductions sans soudure pour applications industrielles | Nirotec","_seopress_titles_desc":"R\u00e9ductions concentriques et excentriques sans soudure pour l\u2019\u00e9nergie, le nucl\u00e9aire et l\u2019industrie des 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