{"id":5405,"date":"2020-04-14T16:07:19","date_gmt":"2020-04-14T09:07:19","guid":{"rendered":"https:\/\/inoxdaiduong.com\/?p=5405"},"modified":"2023-02-28T10:44:22","modified_gmt":"2023-02-28T03:44:22","slug":"tube-conversion-tables-from-dn-to-inches-and-millimeters","status":"publish","type":"post","link":"https:\/\/inoxdaiduong.com\/en\/tube-conversion-tables-from-dn-to-inches-and-millimeters\/","title":{"rendered":"Tube conversion tables from DN to inches and millimeters"},"content":{"rendered":"<p style=\"text-align: justify;\"><span style=\"font-family: 'times new roman', times, serif; font-size: 130%;\">Import market for pipes now varies from Europe, America to Asia so there will be different measurement standards. Understanding the conversion table of sizes of pipes (stainless steel pipes, steel pipes, plastic &#8230;) will help users not to be confused between measurement units. Come on, let&#8217;s explore Dai Duong In this article offline.<\/span><\/p>\n<div id=\"toc_container\" class=\"no_bullets\"><p class=\"toc_title\">N\u1ed9i dung ch&iacute;nh<\/p><ul class=\"toc_list\"><li><a href=\"#The_concept_of_unit_of_measurement\">The concept of unit of measurement<\/a><ul><li><a href=\"#What_is_DN\">What is DN?<\/a><\/li><li><a href=\"#What_is_an_inch\">What is an inch?<\/a><\/li><li><a href=\"#What_is_Phi\">What is \u201cPhi\u201d?<\/a><\/li><li><a href=\"#Wall_thickness\">Wall thickness<\/a><\/li><\/ul><\/li><li><a href=\"#Instructions_on_how_to_convert_the_nominal_pipe_size_to_millimeters_and_inches\">Instructions on how to convert the nominal pipe size to millimeters and inches<\/a><ul><li><a href=\"#For_pipes_with_DN6_8211_DN90_or_from_18_8220-_38221\">For pipes with DN6 &#8211; DN90 or from 1\/8 &#8220;- 3\u00bd&#8221;:<\/a><\/li><li><a href=\"#For_pipes_with_DN100_8211_DN200_or_from_4_to_8\">For pipes with DN100 &#8211; DN200 or from 4\u201d to 8\u201d:<\/a><\/li><li><a href=\"#For_pipes_with_DN250_8211_DN600_or_from_10_to_24\">For pipes with DN250 &#8211; DN600 or from 10\u201d to 24\u201d:<\/a><\/li><li><a href=\"#Why_is_it_necessary_to_know_the_nominal_pipe_size_conversion\">Why is it necessary to know the nominal pipe size conversion<\/a><\/li><\/ul><\/li><\/ul><\/div>\n<h2><span id=\"The_concept_of_unit_of_measurement\"><span style=\"font-family: 'times new roman', times, serif; font-size: 130%;\">The concept of unit of measurement<\/span><\/span><\/h2>\n<p style=\"text-align: justify;\"><span style=\"font-family: 'times new roman', times, serif; font-size: 130%;\">If the plastic pipe is measured by external dimensions then the metal pipe is measured with the inner dimensions.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-family: 'times new roman', times, serif; font-size: 130%;\">In Vietnam nowadays, there are common measurement units are DN, Inch, Phi. Some pipes have that unit as NPS (Nominal Pipe Size) if the pipe is from North America. But NPS does not seem as popular in Vietnam as the others.<\/span><\/p>\n<h3><span id=\"What_is_DN\"><span style=\"font-family: 'times new roman', times, serif; font-size: 130%;\">What is DN?<\/span><\/span><\/h3>\n<p style=\"text-align: justify;\"><span style=\"font-family: 'times new roman', times, serif; font-size: 130%;\">DN is the nominal pipe size, English name is Diametre Nominal. DN is the system according to ISO international quality standards so they are commonly used in many types of pipes such as water pipes, gas piping systems, household drainage systems and buildings.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif; font-size: 130%;\"><a href=\"https:\/\/inoxdaiduong.com\/wp-content\/uploads\/2020\/04\/dn-inch-phi-la-gi.jpg\"><img class=\"aligncenter wp-image-5223 size-large\" src=\"https:\/\/inoxdaiduong.com\/wp-content\/uploads\/2020\/04\/dn-inch-phi-la-gi-830x541.jpg\" alt=\"What is DN?\" width=\"830\" height=\"541\" srcset=\"https:\/\/inoxdaiduong.com\/wp-content\/uploads\/2020\/04\/dn-inch-phi-la-gi-830x541.jpg 830w, https:\/\/inoxdaiduong.com\/wp-content\/uploads\/2020\/04\/dn-inch-phi-la-gi-570x372.jpg 570w, https:\/\/inoxdaiduong.com\/wp-content\/uploads\/2020\/04\/dn-inch-phi-la-gi-220x143.jpg 220w, https:\/\/inoxdaiduong.com\/wp-content\/uploads\/2020\/04\/dn-inch-phi-la-gi-768x501.jpg 768w, https:\/\/inoxdaiduong.com\/wp-content\/uploads\/2020\/04\/dn-inch-phi-la-gi-476x310.jpg 476w, https:\/\/inoxdaiduong.com\/wp-content\/uploads\/2020\/04\/dn-inch-phi-la-gi.jpg 1080w\" sizes=\"(max-width: 830px) 100vw, 830px\" \/><\/a><\/span><\/p>\n<h3><span id=\"What_is_an_inch\"><span style=\"font-family: 'times new roman', times, serif; font-size: 130%;\">What is an inch?<\/span><\/span><\/h3>\n<p style=\"text-align: justify;\"><span style=\"font-family: 'times new roman', times, serif; font-size: 130%;\">The unit used to measure length in North America (USA and Canada). In Vietnam, it is also common to use inches to measure pipe length or thickness of a drain. However, manufacturers will often convert inches to millimeters &#8211; a common unit of measurement in Vietnam for ease of work. Inches are denoted by \u201d<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-family: 'times new roman', times, serif; font-size: 130%;\"><em>You can use this formula to convert inches to millimeters: 1 inch = 25.4mm<\/em><\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif; font-size: 130%;\">Or go to<a href=\"https:\/\/www.metric-conversions.org\/en\/chieu-dai\/inch-sang-milimet.htm\" target=\"_blank\" rel=\"noopener noreferrer\"> https:\/\/www.metric-conversions.org\/en\/chieu-dai\/inch-sang-milimet.htm<\/a> to look it up correctly.<\/span><\/p>\n<h3><span id=\"What_is_Phi\"><span style=\"font-family: 'times new roman', times, serif; font-size: 130%;\">What is \u201cPhi\u201d?<\/span><\/span><\/h3>\n<p style=\"text-align: justify;\"><span style=\"font-family: 'times new roman', times, serif; font-size: 130%;\">\u201cPhi\u201d is a nominal outside diameter. If countries from Europe measure pipes by DN, Vietnam often uses \u201cPhi\u201d as the unit of measuring pipe size.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-family: 'times new roman', times, serif; font-size: 130%;\">Phi, denoted as \u03a6 (capital letters) and \u03c6 (lowercase), in millimeters (mm). In the metric system, millimeters are equivalent to 1\/1000.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif; font-size: 130%;\">Formula to convert from inches to millimeters: mm = inches \/ 0.039370<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif; font-size: 130%;\"><a href=\"https:\/\/inoxdaiduong.com\/wp-content\/uploads\/2020\/04\/do-day-thanh-ong.jpg\"><img class=\"aligncenter wp-image-5225 size-large\" src=\"https:\/\/inoxdaiduong.com\/wp-content\/uploads\/2020\/04\/do-day-thanh-ong-830x331.jpg\" alt=\"What is \u201cPhi\u201d?\" width=\"830\" height=\"331\" srcset=\"https:\/\/inoxdaiduong.com\/wp-content\/uploads\/2020\/04\/do-day-thanh-ong-830x331.jpg 830w, https:\/\/inoxdaiduong.com\/wp-content\/uploads\/2020\/04\/do-day-thanh-ong-570x227.jpg 570w, https:\/\/inoxdaiduong.com\/wp-content\/uploads\/2020\/04\/do-day-thanh-ong-220x88.jpg 220w, https:\/\/inoxdaiduong.com\/wp-content\/uploads\/2020\/04\/do-day-thanh-ong-768x306.jpg 768w, https:\/\/inoxdaiduong.com\/wp-content\/uploads\/2020\/04\/do-day-thanh-ong-476x190.jpg 476w, https:\/\/inoxdaiduong.com\/wp-content\/uploads\/2020\/04\/do-day-thanh-ong.jpg 1080w\" sizes=\"(max-width: 830px) 100vw, 830px\" \/><\/a><\/span><\/p>\n<h3><span id=\"Wall_thickness\"><span style=\"font-family: 'times new roman', times, serif; font-size: 130%;\">Wall thickness<\/span><\/span><\/h3>\n<p style=\"text-align: justify;\"><span style=\"font-family: 'times new roman', times, serif; font-size: 130%;\">Pipe wall thickness (Schedule), the unit of measurement is mm is an index often attached with DN to convert pipe size most accurately. The pipe wall thickness abbreviated on the conversion board is SCH or SCHED. Depending on different standards, SCH has different thickness.<\/span><\/p>\n<h2><span id=\"Instructions_on_how_to_convert_the_nominal_pipe_size_to_millimeters_and_inches\"><span style=\"font-family: 'times new roman', times, serif; font-size: 130%;\">Instructions on how to convert the nominal pipe size to millimeters and inches<\/span><\/span><\/h2>\n<p style=\"text-align: justify;\"><span style=\"font-family: 'times new roman', times, serif; font-size: 130%;\">Some common mistakes of consumers such as: &#8220;DN21 is \u03a621&#8221; or &#8220;\u03a621, the outside diameter must be equal to 21mm&#8221;. However, with different production standards, the actual diameter will also differ. Usually, manufacturers have exact conversion tables for pipe sizes as well as pipe production standards.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-family: 'times new roman', times, serif; font-size: 130%;\">To overcome this disastrous confusion, the following pipe size conversion table (corresponding to some common standards such as ASTM, ASME, A106, API 5L, A53, A312 &#8230;) will be very helpful for manufacturers as well as consumers:<\/span><\/p>\n<h3><span id=\"For_pipes_with_DN6_8211_DN90_or_from_18_8220-_38221\"><span style=\"font-family: 'times new roman', times, serif; font-size: 130%;\">For pipes with DN6 &#8211; DN90 or from 1\/8 &#8220;- 3\u00bd&#8221;:<\/span><\/span><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif; font-size: 130%;\"><a href=\"https:\/\/inoxdaiduong.com\/wp-content\/uploads\/2020\/04\/quy-doi-kich-thuoc-ong-dn-mm-he-inch-6-90.jpg\"><img class=\"aligncenter wp-image-5213 size-large\" src=\"https:\/\/inoxdaiduong.com\/wp-content\/uploads\/2020\/04\/quy-doi-kich-thuoc-ong-dn-mm-he-inch-6-90-830x421.jpg\" alt=\"For pipes with DN6 - DN90 or from 1\/8 &quot;- 3\u00bd&quot;\" width=\"830\" height=\"421\" srcset=\"https:\/\/inoxdaiduong.com\/wp-content\/uploads\/2020\/04\/quy-doi-kich-thuoc-ong-dn-mm-he-inch-6-90-830x421.jpg 830w, https:\/\/inoxdaiduong.com\/wp-content\/uploads\/2020\/04\/quy-doi-kich-thuoc-ong-dn-mm-he-inch-6-90-570x289.jpg 570w, https:\/\/inoxdaiduong.com\/wp-content\/uploads\/2020\/04\/quy-doi-kich-thuoc-ong-dn-mm-he-inch-6-90-220x112.jpg 220w, https:\/\/inoxdaiduong.com\/wp-content\/uploads\/2020\/04\/quy-doi-kich-thuoc-ong-dn-mm-he-inch-6-90-768x390.jpg 768w, https:\/\/inoxdaiduong.com\/wp-content\/uploads\/2020\/04\/quy-doi-kich-thuoc-ong-dn-mm-he-inch-6-90-476x242.jpg 476w, https:\/\/inoxdaiduong.com\/wp-content\/uploads\/2020\/04\/quy-doi-kich-thuoc-ong-dn-mm-he-inch-6-90.jpg 1024w\" sizes=\"(max-width: 830px) 100vw, 830px\" \/><\/a><\/span><\/p>\n<h3><span id=\"For_pipes_with_DN100_8211_DN200_or_from_4_to_8\"><span style=\"font-family: 'times new roman', times, serif; font-size: 130%;\">For pipes with DN100 &#8211; DN200 or from 4\u201d to 8\u201d:<\/span><\/span><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif; font-size: 130%;\"><a href=\"https:\/\/inoxdaiduong.com\/wp-content\/uploads\/2020\/04\/quy-doi-kich-thuoc-ong-dn-mm-he-inch-100-200.jpg\"><img class=\"aligncenter wp-image-5215 size-large\" src=\"https:\/\/inoxdaiduong.com\/wp-content\/uploads\/2020\/04\/quy-doi-kich-thuoc-ong-dn-mm-he-inch-100-200-830x292.jpg\" alt=\"For pipes with DN100 - DN200 or from 4\u201d to 8\u201d\" width=\"830\" height=\"292\" srcset=\"https:\/\/inoxdaiduong.com\/wp-content\/uploads\/2020\/04\/quy-doi-kich-thuoc-ong-dn-mm-he-inch-100-200-830x292.jpg 830w, https:\/\/inoxdaiduong.com\/wp-content\/uploads\/2020\/04\/quy-doi-kich-thuoc-ong-dn-mm-he-inch-100-200-570x200.jpg 570w, https:\/\/inoxdaiduong.com\/wp-content\/uploads\/2020\/04\/quy-doi-kich-thuoc-ong-dn-mm-he-inch-100-200-220x77.jpg 220w, https:\/\/inoxdaiduong.com\/wp-content\/uploads\/2020\/04\/quy-doi-kich-thuoc-ong-dn-mm-he-inch-100-200-768x270.jpg 768w, https:\/\/inoxdaiduong.com\/wp-content\/uploads\/2020\/04\/quy-doi-kich-thuoc-ong-dn-mm-he-inch-100-200-476x167.jpg 476w, https:\/\/inoxdaiduong.com\/wp-content\/uploads\/2020\/04\/quy-doi-kich-thuoc-ong-dn-mm-he-inch-100-200.jpg 1024w\" sizes=\"(max-width: 830px) 100vw, 830px\" \/><\/a><\/span><\/p>\n<h3><span id=\"For_pipes_with_DN250_8211_DN600_or_from_10_to_24\"><span style=\"font-family: 'times new roman', times, serif; font-size: 130%;\">For pipes with DN250 &#8211; DN600 or from 10\u201d to 24\u201d:<\/span><\/span><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif; font-size: 130%;\"><a href=\"https:\/\/inoxdaiduong.com\/wp-content\/uploads\/2020\/04\/quy-doi-kich-thuoc-ong-dn-mm-he-inch-250-600.jpg\"><img class=\"aligncenter wp-image-5217 size-large\" src=\"https:\/\/inoxdaiduong.com\/wp-content\/uploads\/2020\/04\/quy-doi-kich-thuoc-ong-dn-mm-he-inch-250-600-830x292.jpg\" alt=\"For pipes with DN250 - DN600 or from 10\u201d to 24\u201d\" width=\"830\" height=\"292\" srcset=\"https:\/\/inoxdaiduong.com\/wp-content\/uploads\/2020\/04\/quy-doi-kich-thuoc-ong-dn-mm-he-inch-250-600-830x292.jpg 830w, https:\/\/inoxdaiduong.com\/wp-content\/uploads\/2020\/04\/quy-doi-kich-thuoc-ong-dn-mm-he-inch-250-600-570x200.jpg 570w, https:\/\/inoxdaiduong.com\/wp-content\/uploads\/2020\/04\/quy-doi-kich-thuoc-ong-dn-mm-he-inch-250-600-220x77.jpg 220w, https:\/\/inoxdaiduong.com\/wp-content\/uploads\/2020\/04\/quy-doi-kich-thuoc-ong-dn-mm-he-inch-250-600-768x270.jpg 768w, https:\/\/inoxdaiduong.com\/wp-content\/uploads\/2020\/04\/quy-doi-kich-thuoc-ong-dn-mm-he-inch-250-600-476x167.jpg 476w, https:\/\/inoxdaiduong.com\/wp-content\/uploads\/2020\/04\/quy-doi-kich-thuoc-ong-dn-mm-he-inch-250-600.jpg 1024w\" sizes=\"(max-width: 830px) 100vw, 830px\" \/><\/a><\/span><\/p>\n<h3><span id=\"Why_is_it_necessary_to_know_the_nominal_pipe_size_conversion\"><span style=\"font-family: 'times new roman', times, serif; font-size: 130%;\">Why is it necessary to know the nominal pipe size conversion<\/span><\/span><\/h3>\n<p style=\"text-align: justify;\"><span style=\"font-family: 'times new roman', times, serif; font-size: 130%;\">Pipe size conversion table makes it easy for employees of the company to work with the manufacturer thanks to the specific parameters that are popular in the metal pipe market in the country and the world.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-family: 'times new roman', times, serif; font-size: 130%;\">The mechanical industry always needs almost absolute millimeter precision because &#8220;one inch is wrong, one mile is gone&#8221;.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-family: 'times new roman', times, serif; font-size: 130%;\">To create a product, sometimes it is necessary to combine metal pipes, stainless steel pipes or connections between pipes and pipe fittings. Accurate dimensioning will help manufacturers accurately measure as well as combine pipes \/ fittings with corresponding thread sizes, minimize errors and minimize waste of production materials.<\/span><\/p>\n<p style=\"text-align: right;\"><span style=\"font-family: 'times new roman', times, serif; font-size: 130%;\"><strong>Source: <a href=\"https:\/\/inoxdaiduong.com\/en\/\">Stainless Steel Dai Duong<\/a><\/strong><\/span><br \/>\n<span style=\"font-family: 'times new roman', times, serif; font-size: 130%;\"><a href=\"https:\/\/inoxdaiduong.com\/bang-quy-doi-kich-thuoc-ong-tu-dn-sang-inch-va-milimet\/\">Vietnamese<\/a><\/span><\/p>\n<div style=\"display: none;\"\n    class=\"kk-star-ratings kksr-valign-bottom kksr-align-center kksr-disabled\"\n    data-id=\"5405\"\n    data-slug=\"\">\n    <div class=\"kksr-stars\">\n    <div class=\"kksr-stars-inactive\">\n            <div class=\"kksr-star\" data-star=\"1\">\n            <div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"2\">\n            <div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"3\">\n            <div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"4\">\n            <div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"5\">\n            <div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n    <\/div>\n    <div class=\"kksr-stars-active\" style=\"width: 140px;\">\n            <div class=\"kksr-star\">\n            <div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\">\n            <div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\">\n            <div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\">\n            <div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\">\n            <div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n    <\/div>\n<\/div>\n    <div class=\"kksr-legend\">\n            <strong class=\"kksr-score\">5<\/strong>\n        <span class=\"kksr-muted\">\/<\/span>\n        <strong>5<\/strong>\n        <span class=\"kksr-muted\">(<\/span>\n        <strong class=\"kksr-count\">1<\/strong>\n        <span class=\"kksr-muted\">\n            vote        <\/span>\n        <span class=\"kksr-muted\">)<\/span>\n    <\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Import market for pipes now varies from Europe, America to Asia so there will be different measurement standards. Understanding the conversion table of sizes of pipes (stainless steel pipes, steel pipes, plastic &#8230;) will help users not to be confused between measurement units. Come on, let&#8217;s explore Dai Duong In this article offline. N\u1ed9i dung[ &#8230; m\u1eddi xem th\u00eam]\n","protected":false},"author":1,"featured_media":5253,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[16],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v15.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Tube conversion tables from DN to inches and millimeters | Dai Duong<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/inoxdaiduong.com\/en\/tube-conversion-tables-from-dn-to-inches-and-millimeters\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Tube conversion tables from DN to inches and millimeters | Dai Duong\" \/>\n<meta property=\"og:description\" content=\"Import market for pipes now varies from Europe, America to Asia so there will be different measurement standards. 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