[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-1-en-105":3,"doc-seo-571188-105":53,"doc-detail-571188-en":120},{"code":4,"msg":5,"data":6},0,"success",[7,14,19,24,29,34,39,44,49],{"id":8,"doc_module":9,"doc_module_name":10,"category_name":11,"show_sort_weight":12,"slug":13},11,1,"Template","Presentations",90,"presentations",{"id":15,"doc_module":9,"doc_module_name":10,"category_name":16,"show_sort_weight":17,"slug":18},12,"Resumes",80,"resumes",{"id":20,"doc_module":9,"doc_module_name":10,"category_name":21,"show_sort_weight":22,"slug":23},14,"Invoices",70,"invoices",{"id":25,"doc_module":9,"doc_module_name":10,"category_name":26,"show_sort_weight":27,"slug":28},15,"Posters",60,"posters",{"id":30,"doc_module":9,"doc_module_name":10,"category_name":31,"show_sort_weight":32,"slug":33},16,"Social Media",50,"social-media",{"id":35,"doc_module":9,"doc_module_name":10,"category_name":36,"show_sort_weight":37,"slug":38},17,"Forms",40,"forms",{"id":40,"doc_module":9,"doc_module_name":10,"category_name":41,"show_sort_weight":42,"slug":43},18,"Letters",30,"letters",{"id":45,"doc_module":9,"doc_module_name":10,"category_name":46,"show_sort_weight":47,"slug":48},21,"Paper Templates",5,"papers-templates",{"id":50,"doc_module":9,"doc_module_name":10,"category_name":51,"show_sort_weight":4,"slug":52},158,"General","general-158",{"code":4,"msg":54,"data":55},"ok",{"site_id":56,"language":57,"slug":58,"title":59,"keywords":60,"description":61,"schema_data":62,"social_meta":113,"head_meta":115,"extra_data":117,"updated_unix":119},105,"en","nordduct-round-duct-system-rdt-01-0121","NORDduct - Round duct system - RDT-01-0121","","NORDduct round duct system specification covering spiral ducts, bends, couplings, reducers, take-offs, tees, end caps, and intakes. Describes general compliance with standard EVS-EN 1506:2007, tightness class D, and cleanliness classification M1 when assembled per instructions. Provides materials requirements for galvanized steel sheet, zinc coating thickness, product coding examples, key measurement definitions, and installation-relevant tolerances for duct lengths and angles. Includes tolerance tables and weight data for NTO, NTOP, NTOV, and NVP components.",{"@graph":63,"@context":112},[64,80,95],{"@type":65,"itemListElement":66},"BreadcrumbList",[67,71,74,77],{"item":68,"name":69,"@type":70,"position":9},"https://docshare.wps.com","Home","ListItem",{"item":72,"name":10,"@type":70,"position":73},"https://docshare.wps.com/template/",2,{"item":75,"name":46,"@type":70,"position":76},"https://docshare.wps.com/template/paper-templates/",3,{"item":78,"name":59,"@type":70,"position":79},"https://docshare.wps.com/template/nordduct-round-duct-system-rdt-01-0121/571188/",4,{"url":78,"name":59,"@type":81,"author":82,"headline":59,"publisher":85,"fileFormat":88,"inLanguage":57,"description":61,"dateModified":89,"datePublished":89,"encodingFormat":88,"isAccessibleForFree":90,"interactionStatistic":91},"DigitalDocument",{"name":83,"@type":84},"Marglet","Person",{"url":68,"name":86,"@type":87},"DocShare","Organization","application/pdf","2026-10-13",true,{"@type":92,"interactionType":93,"userInteractionCount":4},"InteractionCounter",{"@type":94},"ViewAction",{"@type":96,"mainEntity":97},"FAQPage",[98,104,108],{"name":99,"@type":100,"acceptedAnswer":101},"What standards and performance classes does the NORDduct round duct system meet?","Question",{"text":102,"@type":103},"NORDduct ducts and parts are manufactured according to EVS-EN 1506:2007. They meet tightness class D requirements and cleanliness classification M1 when products are assembled according to instructions.","Answer",{"name":105,"@type":100,"acceptedAnswer":106},"What materials and zinc coating are used for NORDduct round duct parts?",{"text":107,"@type":103},"NORDduct round duct parts are made from galvanized steel sheet with a minimum zinc coating thickness of 275 g/m² inside and out. Standard product thickness varies by inner diameter range.",{"name":109,"@type":100,"acceptedAnswer":110},"How are measurements, tolerances, and angles specified for ducts?",{"text":111,"@type":103},"Key dimensions include inner diameter (d), outer diameters (d1–d4), lengths (l, l1, l3), and overall direct duct length (L) with overall length lp. Tolerance for duct length L is 0.005L, and tolerance for angle is 2°; detailed tolerance ranges are provided in tables for standard sizes.","https://schema.org",{"og:url":78,"og:type":114,"og:title":59,"og:site_name":86,"og:description":61},"article",{"robots":116,"canonical":78},"index,follow",{"doc_id":118,"site_id":56},571188,1791901714,{"code":4,"msg":5,"data":121},{"doc_id":118,"user_id":122,"nickname":83,"user_avatar":123,"doc_module":9,"category_id":45,"category_name":46,"doc_title":59,"doc_description":61,"doc_content":124,"file_id":125,"file_url":126,"file_type":127,"file_size":128,"view_count":4,"is_deleted":4,"is_public":9,"is_downloadable":9,"audit_status":9,"page_count":129,"language":130,"language_code":57,"site_id":56,"html_lang":57,"table_of_contents":131,"faqs":132,"seo_title":133,"seo_description":61,"update_tm":119,"read_time":30},2336477982702,"https://ap-avatar.wpscdn.com/davatar_9964176cb1d06d4a9deccf72a44ae3dc","NORD duct  \nRound duct system  \n® NORDduct  \nContents  \n2 RDT-01-0121 [www.etsnord.com](www.etsnord.com)  \n® NORDduct  \nGeneral  \nNORDduct system includes spiral ducts, bends, couplings, reducers, take-offs, tees, end caps and intakes. NORDduct round ducts and parts are manufactured according to the standard EVS-EN 1506:2007 . NORDduct ducts and parts meet tightness class D requirements provided that the products are assembled according to instructions.  \nNORDduct ducts and parts are cleanliness classified M1 .  \nFor documentation, see our home [pages at www.etsnord.com](pages at www.etsnord.com).  \nMaterials  \nNORDduct round duct parts are manufactured of galvanized steel sheet, coated with minimum thickness of zinc inside and out of 275 g/m² .  \nStandard products are manufactured of material with the thickness of:  \n0,5 mm, when d ≤ 320 mm  \n0,7 mm, when d > 320 mm  \n0,9 mm, when 800 \u003C d ≤ 1250 mm  \n1,0 mm, when d > 1250 mm  \nProduct codes  \nFor standard products, markings include product type and measurements. Measurements are in millimetres (mm) .  \nExample: NI 200 Inner coupling (standard)  \nMeasurements and tolerances  \nd – inner diameter of duct  \nd1, d2, d3 and d4 – outer diameter of part l, l1, and l3 – length of part  \nL – length of direct duct lp – overall length  \nTolerance for measurements l, r, rm, s Overall length lp  \nMeasurements l, r, rm, s, mm  \n≥ 15  \n> 15 ≤ 100  \n> 100  \nTolerance,  \nmm  \n+0  \n-2  \n+0  \n-5  \n+0  \n-10  \nNominal size, mm  \n100-200 250-400 500-630 800 1000-1600  \nlp,  \nmm  \n30-35 50  \n61  \n96  \n110  \nTolerance for duct length L is 0,005L. Tolerance for angle is 2° .  \nImages are for illustrative purposes We reserve the right to make changes  \nRDT-01-0121 3  \n® NORDduct  \nTable 1. Tolerance for ducts and parts (standard EN 1506:2007)  \n\n| Nominal size,\u003Cbr>d, mm | Duct\u003Cbr>inner diameter\u003Cbr>Ød | Tolerance | Part\u003Cbr>outer diameter\u003Cbr>Ød1 | Tolerance |\n| --- | --- | --- | --- | --- |\n| 100 | 100,0…..100,5 | 0,5 | 98,8…..99,3 | 0,5 |\n| 125 | 125,0…..125,5 | 0,5 | 123,8…..124,3 | 0,5 |\n| 160 | 160,0…..160,6 | 0,6 | 158,7…..159,3 | 0,6 |\n| 200 | 200,0…..200,7 | 0,7 | 198,6…..199,3 | 0,7 |\n| 250 | 250,0…..250,8 | 0,8 | 248,5…..249,3 | 0,8 |\n| 315 | 315,0…..315,9 | 0,9 | 313,4…..314,3 | 0,9 |\n| 400 | 400,0…..401,0 | 1,0 | 398,3…..399,3 | 1,0 |\n| 500 | 500,0…..501,1 | 1,1 | 498,2…..499,3 | 1,1 |\n| 630 | 630,0…..631,2 | 1,2 | 628,1   629,3 | 1,2 |\n| 800 | 800,0…..801,6 | 1,6 | 798,0…..799,3 | 1,3 |\n| 1000 | 1000,0…..1002,0 | 2,0 | 997,9…..999,3 | 1,4 |\n| 1250 | 1250,0…..1252,5 | 2,5 | 1247,8…..1249,3 | 1,5 |\n|  |  |  |  |  |\n| 1600 | 1600,0.....1603,0 | 3,0 | 1597,5.....1599,3 | 1,8 |\n\n4 RDT-01-0121 [www.etsnord.com](www.etsnord.com)  \n® NORDduct | NTO  \nNTO Spiral duct  \nNTO spiral ducts are manufactured of galvanized steel. Standard lengths are 3 m and 6 m. Ducts can also be manufactured of other materials and in other material thicknesses.  \nSpiral ducts meet the requirements for cleanliness class M1 and tightness class D.  \n\n| Nominal size d | Material\u003Cbr>thickness t, mm | Weight,\u003Cbr>kg/m |\n| --- | --- | --- |\n| 100 | 0,5 | 1,3 |\n| 125 | 0,5 | 1,6 |\n| 160 | 0,5 | 2,1 |\n| 200 | 0,5 | 2,6 |\n| 250 | 0,5 | 3,2 |\n| 315 | 0,5 | 3,9 |\n| 400 | 0,7 | 7,9 |\n| 500 | 0,7 | 10,0 |\n| 630 | 0,7 | 12,0 |\n| 800 | 0,7 | 15,2 |\n| 1000 | 0,9 | 25,0 |\n| 1250 | 0,9 | 31,0 |\n| 1600 | 1,0 | 45,0 |\n\nDuct profiles  \nt  \nMeasurements 100-250 mm Measurements 315-1250 mm  \nProduct codes  \nNTO - d - L  \nMarking ~~ ~~  \nDiameter d ~~ ~~  \nLenght L  \n3 m  \n6 m  \nExample: NTO 315-3  \nImages are for illustrative purposes We reserve the right to make changes  \nRDT-01-0121 5  \n® NORDduct | NTOP  \nNTOP Ventilatsion duct (welded)  \nRound horizontally welded duct.  \nNTOP duct is manufactured of galvanized steel sheet.  \nDucts can also be manufactured of other materials and in other material thicknesses (max. 0,9 mm) . Duct sizes Ø 100-160 mm maximum length 1000 mm and sizes Ø 200-1250 mm maximum length 1250 mm.  \nNominal sized  \nMaterial ","cbCaic9Of5CkCOWx","https://ap.wps.com/l/cbCaic9Of5CkCOWx","pdf",6479606,45,"English","# General\n# Materials\n# Product codes\n# Measurements and tolerances\n# Tolerance table (standard EN 1506:2007)\n# NTO spiral duct\n## Duct profiles and product codes\n# NTOP ventilation duct (welded)\n## Product codes\n# NTOV ventilation duct (lock seamed)\n## Product codes\n# NVP bend\n## NVP 90° and angle variants","[{\"question\":\"What standards and performance classes does the NORDduct round duct system meet?\",\"answer\":\"NORDduct ducts and parts are manufactured according to EVS-EN 1506:2007. They meet tightness class D requirements and cleanliness classification M1 when products are assembled according to instructions.\"},{\"question\":\"What materials and zinc coating are used for NORDduct round duct parts?\",\"answer\":\"NORDduct round duct parts are made from galvanized steel sheet with a minimum zinc coating thickness of 275 g/m² inside and out. Standard product thickness varies by inner diameter range.\"},{\"question\":\"How are measurements, tolerances, and angles specified for ducts?\",\"answer\":\"Key dimensions include inner diameter (d), outer diameters (d1–d4), lengths (l, l1, l3), and overall direct duct length (L) with overall length lp. Tolerance for duct length L is 0.005L, and tolerance for angle is 2°; detailed tolerance ranges are provided in tables for standard sizes.\"}]","NORDduct - Round duct system - RDT-01-0121 | PDF"]