Steel Pipe Sizes Chart | ASME B36.10 & B36.19 | Baowu Steel<\/title>\r\n <meta name=\"description\" content=\"Complete steel pipe sizes chart: NPS, DN, OD, wall thickness (SCH 5S to XXS), and weight per meter per ASME B36.10 & B36.19 standards.\">\r\n <style>\r\n * { margin: 0; padding: 0; box-sizing: border-box; }\r\n body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; background: #f0f2f5; color: #333; line-height: 1.5; }\r\n .page-container { margin-top: 0; padding-top: 0; }\r\n .hero-section { background: linear-gradient(135deg, #0c3483 0%, #4facfe 100%); padding: 50px 20px 60px; text-align: center; color: #fff; position: relative; z-index: 1; }\r\n .hero-section h1 { font-size: 36px; font-weight: 800; margin-bottom: 12px; line-height: 1.2; }\r\n .hero-section p { font-size: 16px; opacity: .92; max-width: 720px; margin: 0 auto; }\r\n .breadcrumb { max-width: 1400px; margin: 0 auto; padding: 14px 20px; font-size: 12px; color: #999; background: #fff; }\r\n .breadcrumb a { color: #4facfe; 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text-align: center; } }\r\n @media (max-width: 600px) { .card { padding: 22px 18px; } }\r\n <\/style>\r\n<\/head>\r\n<body>\r\n\r\n<div class=\"page-container\">\r\n\r\n <section class=\"hero-section\">\r\n <h1>Steel Pipe Sizes Chart<\/h1>\r\n <p>Complete dimensional reference: NPS, DN, OD, wall thicknesses (SCH 5S through XXS), and weight per meter. Fully compliant with ASME B36.10 and B36.19 standards.<\/p>\r\n <\/section>\r\n\r\n <div class=\"breadcrumb\">\r\n <a href=\"https:\/\/baowu-steel.com\/\">Home<\/a> \u203a\r\n <a href=\"https:\/\/baowu-steel.com\/tools\/\">Tools<\/a> \u203a\r\n Steel Pipe Sizes Chart\r\n <\/div>\r\n\r\n <div class=\"content-wrapper\">\r\n <div class=\"three-col-grid\">\r\n\r\n \r\n <aside class=\"left-sidebar\">\r\n <div class=\"contact-card\">\r\n <h3>Contact Us<\/h3>\r\n <p>Get factory-direct pricing. Fast reply guaranteed.<\/p>\r\n <a href=\"mailto:sales@baowu-steel.com\" class=\"cta-btn\">Get Free Quote<\/a>\r\n <div class=\"contact-info\">\r\n <a href=\"tel:+8618764178985\"><span>\ud83d\udcde<\/span> +86 187 6417 8985<\/a>\r\n <a href=\"mailto:sales@baowu-steel.com\"><span>\u2709<\/span> sales@baowu-steel.com<\/a>\r\n <a href=\"https:\/\/wa.me\/8618764178985\" target=\"_blank\" rel=\"noopener\"><span>\ud83d\udcac<\/span> WhatsApp<\/a>\r\n <\/div>\r\n <\/div>\r\n\r\n <div class=\"sidebar-card\">\r\n <h3>Steel Tools<\/h3>\r\n <nav class=\"tool-links\">\r\n <a href=\"https:\/\/baowu-steel.com\/tools\/pipe-weight-calculator\/\"><span class=\"icon\">\ud83d\udccf<\/span> Steel Pipe Weight Calculator<\/a>\r\n <a href=\"https:\/\/baowu-steel.com\/steel-plate-weight-calculator\/\"><span class=\"icon\">\ud83d\udcd0<\/span> Steel Plate Weight Calculator<\/a>\r\n <a href=\"https:\/\/baowu-steel.com\/steel-coil-weight-calculator\/\"><span class=\"icon\">\u2699\ufe0f<\/span> Steel Coil Weight Calculator<\/a>\r\n <a href=\"https:\/\/baowu-steel.com\/galvanized-steel-coating-thickness-chart\/\"><span class=\"icon\">\ud83d\udee1\ufe0f<\/span> Galvanized Steel Coating Chart<\/a>\r\n <a href=\"https:\/\/baowu-steel.com\/steel-grade-comparison-chart\/\"><span class=\"icon\">\ud83d\udd0d<\/span> Steel Grade Comparison Chart<\/a>\r\n <a href=\"https:\/\/baowu-steel.com\/h-beam-weight-chart\/\"><span class=\"icon\">\ud83c\udfd7\ufe0f<\/span> H Beam Weight Chart<\/a>\r\n <a href=\"https:\/\/baowu-steel.com\/steel-price-per-ton-today\/\"><span class=\"icon\">\ud83d\udcb0<\/span> Steel Price Per Ton Today<\/a>\r\n <a href=\"https:\/\/baowu-steel.com\/steel-pipe-sizes-chart\/\" class=\"current\"><span class=\"icon\">\ud83d\udcca<\/span> Steel Pipe Sizes Chart<\/a>\r\n <a href=\"https:\/\/baowu-steel.com\/sheet-metal-gauge-chart\/\"><span class=\"icon\">\ud83d\udccb<\/span> Sheet Metal Gauge Chart<\/a>\r\n <\/nav>\r\n <\/div>\r\n <\/aside>\r\n\r\n \r\n <main class=\"main-content\">\r\n\r\n \r\n <section class=\"card\">\r\n <h2>NPS \/ DN \/ OD Conversion Reference<\/h2>\r\n <p class=\"desc\">Nominal Pipe Size (NPS) and Diameter Nominal (DN) are dimensionless designations that identify pipe size. The outside diameter (OD) is the actual physical dimension.<\/p>\r\n <div class=\"note-box\">\r\n <p><strong>Important:<\/strong> For sizes below NPS 14 (DN 350), neither NPS nor DN equals the actual OD. For example, NPS 2 pipe has an OD of 60.3 mm, not 2 inches (50.8 mm). From NPS 14 and above, NPS equals the actual OD in inches.<\/p>\r\n <\/div>\r\n <div class=\"table-container\">\r\n <table class=\"data-table\" id=\"table-nps\">\r\n <thead><tr><th>NPS (in)<\/th><th>DN (mm)<\/th><th>OD (mm)<\/th><th>OD (in)<\/th><th>NPS (in)<\/th><th>DN (mm)<\/th><th>OD (mm)<\/th><th>OD (in)<\/th><\/tr><\/thead>\r\n <tbody>\r\n <tr><td>1\/8<\/td><td>6<\/td><td>10.3<\/td><td>0.405<\/td><td>10<\/td><td>250<\/td><td>273.1<\/td><td>10.750<\/td><\/tr>\r\n <tr><td>1\/4<\/td><td>8<\/td><td>13.7<\/td><td>0.540<\/td><td>12<\/td><td>300<\/td><td>323.9<\/td><td>12.750<\/td><\/tr>\r\n <tr><td>3\/8<\/td><td>10<\/td><td>17.1<\/td><td>0.675<\/td><td>14<\/td><td>350<\/td><td>355.6<\/td><td>14.000<\/td><\/tr>\r\n <tr><td>1\/2<\/td><td>15<\/td><td>21.3<\/td><td>0.840<\/td><td>16<\/td><td>400<\/td><td>406.4<\/td><td>16.000<\/td><\/tr>\r\n <tr><td>3\/4<\/td><td>20<\/td><td>26.7<\/td><td>1.050<\/td><td>18<\/td><td>450<\/td><td>457.2<\/td><td>18.000<\/td><\/tr>\r\n <tr><td>1<\/td><td>25<\/td><td>33.4<\/td><td>1.315<\/td><td>20<\/td><td>500<\/td><td>508.0<\/td><td>20.000<\/td><\/tr>\r\n <tr><td>1-1\/4<\/td><td>32<\/td><td>42.2<\/td><td>1.660<\/td><td>24<\/td><td>600<\/td><td>610.0<\/td><td>24.000<\/td><\/tr>\r\n <tr><td>1-1\/2<\/td><td>40<\/td><td>48.3<\/td><td>1.900<\/td><td>30<\/td><td>750<\/td><td>762.0<\/td><td>30.000<\/td><\/tr>\r\n <tr><td>2<\/td><td>50<\/td><td>60.3<\/td><td>2.375<\/td><td>36<\/td><td>900<\/td><td>914.4<\/td><td>36.000<\/td><\/tr>\r\n <tr><td>2-1\/2<\/td><td>65<\/td><td>73.0<\/td><td>2.875<\/td><td>42<\/td><td>1050<\/td><td>1066.8<\/td><td>42.000<\/td><\/tr>\r\n <tr><td>3<\/td><td>80<\/td><td>88.9<\/td><td>3.500<\/td><td>48<\/td><td>1200<\/td><td>1219.2<\/td><td>48.000<\/td><\/tr>\r\n <tr><td>4<\/td><td>100<\/td><td>114.3<\/td><td>4.500<\/td><td>56<\/td><td>1400<\/td><td>1422.4<\/td><td>56.000<\/td><\/tr>\r\n <tr><td>6<\/td><td>150<\/td><td>168.3<\/td><td>6.625<\/td><td>64<\/td><td>1600<\/td><td>1625.6<\/td><td>64.000<\/td><\/tr>\r\n <tr><td>8<\/td><td>200<\/td><td>219.1<\/td><td>8.625<\/td><td>72<\/td><td>1800<\/td><td>1828.8<\/td><td>72.000<\/td><\/tr>\r\n <\/tbody>\r\n <\/table>\r\n <\/div>\r\n <\/section>\r\n\r\n \r\n <section class=\"card\">\r\n <h2>Pipe Schedule Wall Thickness Chart (mm) - ASME B36.10<\/h2>\r\n <p class=\"desc\">Wall thickness values in millimeters for carbon and alloy steel pipes per ASME B36.10. STD (Standard) equals Sch 40 for NPS 1\/8 to 10; XS (Extra Strong) equals Sch 80 for NPS 1\/8 to 8.<\/p>\r\n\r\n <div class=\"filter-section\">\r\n <input type=\"text\" id=\"scheduleFilterInput\" class=\"filter-input\" placeholder=\"Filter by NPS or DN, e.g. 2, 50, 114.3...\" onkeyup=\"filterScheduleTable()\">\r\n <button class=\"filter-btn\" onclick=\"filterScheduleTable()\">Filter<\/button>\r\n <button class=\"filter-clear\" onclick=\"clearScheduleFilter()\">Clear<\/button>\r\n <span class=\"filter-stats\" id=\"scheduleFilterStats\">Showing all<\/span>\r\n <\/div>\r\n\r\n <div class=\"table-container\">\r\n <table class=\"data-table\" id=\"table-schedule\">\r\n <thead><tr><th>NPS<\/th><th>DN<\/th><th>OD (mm)<\/th><th>Sch 5S<\/th><th>Sch 10S<\/th><th>Sch 10<\/th><th>Sch 20<\/th><th>Sch 30<\/th><th>Sch 40\/STD<\/th><th>Sch 60<\/th><th>Sch 80\/XS<\/th><th>Sch 100<\/th><th>Sch 120<\/th><th>Sch 140<\/th><th>Sch 160<\/th><th>XXS<\/th><\/tr><\/thead>\r\n <tbody>\r\n <tr><td>1\/8<\/td><td>6<\/td><td>10.3<\/td><td>1.24<\/td><td>1.24<\/td><td>1.73<\/td><td>\u2014<\/td><td>\u2014<\/td><td>1.73<\/td><td>\u2014<\/td><td>2.41<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><\/tr>\r\n <tr><td>1\/4<\/td><td>8<\/td><td>13.7<\/td><td>1.65<\/td><td>1.65<\/td><td>2.24<\/td><td>\u2014<\/td><td>\u2014<\/td><td>2.24<\/td><td>\u2014<\/td><td>3.02<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><\/tr>\r\n <tr><td>3\/8<\/td><td>10<\/td><td>17.1<\/td><td>1.65<\/td><td>1.65<\/td><td>2.31<\/td><td>\u2014<\/td><td>\u2014<\/td><td>2.31<\/td><td>\u2014<\/td><td>3.20<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><\/tr>\r\n <tr><td>1\/2<\/td><td>15<\/td><td>21.3<\/td><td>1.65<\/td><td>2.11<\/td><td>2.11<\/td><td>\u2014<\/td><td>\u2014<\/td><td>2.77<\/td><td>\u2014<\/td><td>3.73<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>4.78<\/td><td>7.47<\/td><\/tr>\r\n <tr><td>3\/4<\/td><td>20<\/td><td>26.7<\/td><td>1.65<\/td><td>2.11<\/td><td>2.11<\/td><td>\u2014<\/td><td>\u2014<\/td><td>2.87<\/td><td>\u2014<\/td><td>3.91<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>5.56<\/td><td>7.82<\/td><\/tr>\r\n <tr><td>1<\/td><td>25<\/td><td>33.4<\/td><td>1.65<\/td><td>2.77<\/td><td>2.77<\/td><td>\u2014<\/td><td>\u2014<\/td><td>3.38<\/td><td>\u2014<\/td><td>4.55<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>6.35<\/td><td>9.09<\/td><\/tr>\r\n <tr><td>1-1\/4<\/td><td>32<\/td><td>42.2<\/td><td>1.65<\/td><td>2.77<\/td><td>2.77<\/td><td>\u2014<\/td><td>\u2014<\/td><td>3.56<\/td><td>\u2014<\/td><td>4.85<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>6.35<\/td><td>9.70<\/td><\/tr>\r\n <tr><td>1-1\/2<\/td><td>40<\/td><td>48.3<\/td><td>1.65<\/td><td>2.77<\/td><td>2.77<\/td><td>\u2014<\/td><td>\u2014<\/td><td>3.68<\/td><td>\u2014<\/td><td>5.08<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>7.14<\/td><td>10.15<\/td><\/tr>\r\n <tr><td>2<\/td><td>50<\/td><td>60.3<\/td><td>1.65<\/td><td>2.77<\/td><td>2.77<\/td><td>\u2014<\/td><td>\u2014<\/td><td>3.91<\/td><td>\u2014<\/td><td>5.54<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>8.74<\/td><td>11.07<\/td><\/tr>\r\n <tr><td>2-1\/2<\/td><td>65<\/td><td>73.0<\/td><td>2.11<\/td><td>3.05<\/td><td>3.05<\/td><td>\u2014<\/td><td>\u2014<\/td><td>5.16<\/td><td>\u2014<\/td><td>7.01<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>9.53<\/td><td>14.02<\/td><\/tr>\r\n <tr><td>3<\/td><td>80<\/td><td>88.9<\/td><td>2.11<\/td><td>3.05<\/td><td>3.05<\/td><td>\u2014<\/td><td>\u2014<\/td><td>5.49<\/td><td>\u2014<\/td><td>7.62<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>11.13<\/td><td>15.24<\/td><\/tr>\r\n <tr><td>3-1\/2<\/td><td>90<\/td><td>101.6<\/td><td>2.11<\/td><td>3.05<\/td><td>3.05<\/td><td>\u2014<\/td><td>\u2014<\/td><td>5.74<\/td><td>\u2014<\/td><td>8.08<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>16.15<\/td><\/tr>\r\n <tr><td>4<\/td><td>100<\/td><td>114.3<\/td><td>2.11<\/td><td>3.05<\/td><td>3.05<\/td><td>\u2014<\/td><td>\u2014<\/td><td>6.02<\/td><td>\u2014<\/td><td>8.56<\/td><td>\u2014<\/td><td>11.13<\/td><td>\u2014<\/td><td>13.49<\/td><td>17.12<\/td><\/tr>\r\n <tr><td>5<\/td><td>125<\/td><td>141.3<\/td><td>2.77<\/td><td>3.40<\/td><td>3.40<\/td><td>\u2014<\/td><td>\u2014<\/td><td>6.55<\/td><td>\u2014<\/td><td>9.53<\/td><td>\u2014<\/td><td>12.70<\/td><td>\u2014<\/td><td>15.88<\/td><td>19.05<\/td><\/tr>\r\n <tr><td>6<\/td><td>150<\/td><td>168.3<\/td><td>2.77<\/td><td>3.40<\/td><td>3.40<\/td><td>\u2014<\/td><td>\u2014<\/td><td>7.11<\/td><td>\u2014<\/td><td>10.97<\/td><td>\u2014<\/td><td>14.27<\/td><td>\u2014<\/td><td>18.26<\/td><td>21.95<\/td><\/tr>\r\n <tr><td>8<\/td><td>200<\/td><td>219.1<\/td><td>2.77<\/td><td>3.76<\/td><td>3.76<\/td><td>6.35<\/td><td>7.04<\/td><td>8.18<\/td><td>10.31<\/td><td>12.70<\/td><td>15.09<\/td><td>18.26<\/td><td>20.62<\/td><td>23.01<\/td><td>22.23<\/td><\/tr>\r\n <tr><td>10<\/td><td>250<\/td><td>273.1<\/td><td>3.40<\/td><td>4.19<\/td><td>4.19<\/td><td>6.35<\/td><td>7.80<\/td><td>9.27<\/td><td>12.70<\/td><td>12.70<\/td><td>18.26<\/td><td>21.44<\/td><td>25.40<\/td><td>28.58<\/td><td>25.40<\/td><\/tr>\r\n <tr><td>12<\/td><td>300<\/td><td>323.9<\/td><td>3.96<\/td><td>4.57<\/td><td>4.57<\/td><td>6.35<\/td><td>8.38<\/td><td>9.53<\/td><td>14.27<\/td><td>12.70<\/td><td>21.44<\/td><td>25.40<\/td><td>28.58<\/td><td>33.32<\/td><td>25.40<\/td><\/tr>\r\n <tr><td>14<\/td><td>350<\/td><td>355.6<\/td><td>3.96<\/td><td>4.78<\/td><td>6.35<\/td><td>7.92<\/td><td>9.53<\/td><td>9.53<\/td><td>15.09<\/td><td>12.70<\/td><td>23.83<\/td><td>27.79<\/td><td>31.75<\/td><td>35.71<\/td><td>\u2014<\/td><\/tr>\r\n <tr><td>16<\/td><td>400<\/td><td>406.4<\/td><td>4.19<\/td><td>4.78<\/td><td>6.35<\/td><td>7.92<\/td><td>9.53<\/td><td>9.53<\/td><td>16.66<\/td><td>12.70<\/td><td>26.19<\/td><td>30.96<\/td><td>36.53<\/td><td>40.49<\/td><td>\u2014<\/td><\/tr>\r\n <tr><td>18<\/td><td>450<\/td><td>457.2<\/td><td>4.19<\/td><td>4.78<\/td><td>6.35<\/td><td>7.92<\/td><td>11.13<\/td><td>9.53<\/td><td>18.26<\/td><td>12.70<\/td><td>29.36<\/td><td>34.93<\/td><td>39.67<\/td><td>45.24<\/td><td>\u2014<\/td><\/tr>\r\n <tr><td>20<\/td><td>500<\/td><td>508.0<\/td><td>4.78<\/td><td>5.54<\/td><td>6.35<\/td><td>9.53<\/td><td>12.70<\/td><td>9.53<\/td><td>20.62<\/td><td>12.70<\/td><td>32.54<\/td><td>38.10<\/td><td>44.45<\/td><td>50.01<\/td><td>\u2014<\/td><\/tr>\r\n <tr><td>24<\/td><td>600<\/td><td>609.6<\/td><td>5.54<\/td><td>6.35<\/td><td>6.35<\/td><td>9.53<\/td><td>14.27<\/td><td>9.53<\/td><td>24.61<\/td><td>12.70<\/td><td>38.89<\/td><td>46.02<\/td><td>52.37<\/td><td>59.54<\/td><td>\u2014<\/td><\/tr>\r\n <\/tbody>\r\n <\/table>\r\n <\/div>\r\n <p class=\"tip\">Note: Sch 5S and Sch 10S are primarily used for stainless steel pipes per ASME B36.19. Wall thicknesses of 6.35 mm and above are rounded to two decimal places.<\/p>\r\n <\/section>\r\n\r\n \r\n <section class=\"card\">\r\n <h2>Carbon Steel Pipe Weight Chart (kg\/m) - ASME B36.10<\/h2>\r\n <p class=\"desc\">Weight per meter for carbon steel pipes (density 7,850 kg\/m\u00b3). Most commonly used schedules shown.<\/p>\r\n <div class=\"table-container\">\r\n <table class=\"data-table\" id=\"table-weight\">\r\n <thead><tr><th>NPS<\/th><th>DN<\/th><th>OD (mm)<\/th><th>Sch 10<\/th><th>Sch 20<\/th><th>Sch 40\/STD<\/th><th>Sch 60<\/th><th>Sch 80\/XS<\/th><th>Sch 100<\/th><th>Sch 120<\/th><th>Sch 140<\/th><th>Sch 160<\/th><th>XXS<\/th><\/tr><\/thead>\r\n <tbody>\r\n <tr><td>1\/8<\/td><td>6<\/td><td>10.3<\/td><td>0.37<\/td><td>\u2014<\/td><td>0.37<\/td><td>\u2014<\/td><td>0.47<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><\/tr>\r\n <tr><td>1\/4<\/td><td>8<\/td><td>13.7<\/td><td>0.63<\/td><td>\u2014<\/td><td>0.63<\/td><td>\u2014<\/td><td>0.80<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><\/tr>\r\n <tr><td>3\/8<\/td><td>10<\/td><td>17.1<\/td><td>0.80<\/td><td>\u2014<\/td><td>0.80<\/td><td>\u2014<\/td><td>1.10<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><\/tr>\r\n <tr><td>1\/2<\/td><td>15<\/td><td>21.3<\/td><td>1.01<\/td><td>\u2014<\/td><td>1.27<\/td><td>\u2014<\/td><td>1.62<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>1.95<\/td><td>2.55<\/td><\/tr>\r\n <tr><td>3\/4<\/td><td>20<\/td><td>26.7<\/td><td>1.28<\/td><td>\u2014<\/td><td>1.69<\/td><td>\u2014<\/td><td>2.20<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>2.98<\/td><td>3.64<\/td><\/tr>\r\n <tr><td>1<\/td><td>25<\/td><td>33.4<\/td><td>2.09<\/td><td>\u2014<\/td><td>2.50<\/td><td>\u2014<\/td><td>3.24<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>4.24<\/td><td>5.45<\/td><\/tr>\r\n <tr><td>1-1\/4<\/td><td>32<\/td><td>42.2<\/td><td>2.69<\/td><td>\u2014<\/td><td>3.39<\/td><td>\u2014<\/td><td>4.47<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>5.41<\/td><td>7.77<\/td><\/tr>\r\n <tr><td>1-1\/2<\/td><td>40<\/td><td>48.3<\/td><td>3.11<\/td><td>\u2014<\/td><td>4.05<\/td><td>\u2014<\/td><td>5.41<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>7.25<\/td><td>9.56<\/td><\/tr>\r\n <tr><td>2<\/td><td>50<\/td><td>60.3<\/td><td>3.93<\/td><td>\u2014<\/td><td>5.44<\/td><td>\u2014<\/td><td>7.48<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>11.11<\/td><td>13.44<\/td><\/tr>\r\n <tr><td>2-1\/2<\/td><td>65<\/td><td>73.0<\/td><td>5.26<\/td><td>\u2014<\/td><td>8.63<\/td><td>\u2014<\/td><td>11.41<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>14.92<\/td><td>20.39<\/td><\/tr>\r\n <tr><td>3<\/td><td>80<\/td><td>88.9<\/td><td>6.45<\/td><td>\u2014<\/td><td>11.29<\/td><td>\u2014<\/td><td>15.27<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>21.35<\/td><td>27.68<\/td><\/tr>\r\n <tr><td>4<\/td><td>100<\/td><td>114.3<\/td><td>8.37<\/td><td>\u2014<\/td><td>16.07<\/td><td>\u2014<\/td><td>22.32<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>33.54<\/td><td>41.03<\/td><\/tr>\r\n <tr><td>5<\/td><td>125<\/td><td>141.3<\/td><td>11.57<\/td><td>\u2014<\/td><td>21.77<\/td><td>\u2014<\/td><td>30.97<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>49.12<\/td><td>57.44<\/td><\/tr>\r\n <tr><td>6<\/td><td>150<\/td><td>168.3<\/td><td>13.84<\/td><td>\u2014<\/td><td>28.26<\/td><td>\u2014<\/td><td>42.56<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>67.57<\/td><td>79.22<\/td><\/tr>\r\n <tr><td>8<\/td><td>200<\/td><td>219.1<\/td><td>19.98<\/td><td>33.31<\/td><td>42.55<\/td><td>53.08<\/td><td>64.64<\/td><td>75.92<\/td><td>90.44<\/td><td>100.95<\/td><td>111.26<\/td><td>107.88<\/td><\/tr>\r\n <tr><td>10<\/td><td>250<\/td><td>273.1<\/td><td>27.79<\/td><td>41.76<\/td><td>60.31<\/td><td>81.55<\/td><td>81.55<\/td><td>114.77<\/td><td>133.13<\/td><td>155.14<\/td><td>172.33<\/td><td>155.14<\/td><\/tr>\r\n <tr><td>12<\/td><td>300<\/td><td>323.9<\/td><td>36.02<\/td><td>49.71<\/td><td>73.86<\/td><td>108.96<\/td><td>97.44<\/td><td>160.06<\/td><td>186.97<\/td><td>208.15<\/td><td>238.76<\/td><td>186.97<\/td><\/tr>\r\n <tr><td>14<\/td><td>350<\/td><td>355.6<\/td><td>54.76<\/td><td>67.90<\/td><td>81.33<\/td><td>126.71<\/td><td>107.39<\/td><td>195.00<\/td><td>224.66<\/td><td>253.55<\/td><td>281.70<\/td><td>\u2014<\/td><\/tr>\r\n <tr><td>16<\/td><td>400<\/td><td>406.4<\/td><td>62.64<\/td><td>77.83<\/td><td>93.27<\/td><td>160.12<\/td><td>123.30<\/td><td>245.47<\/td><td>286.54<\/td><td>333.18<\/td><td>365.35<\/td><td>\u2014<\/td><\/tr>\r\n <tr><td>18<\/td><td>450<\/td><td>457.2<\/td><td>70.61<\/td><td>87.75<\/td><td>105.21<\/td><td>197.60<\/td><td>139.20<\/td><td>309.66<\/td><td>363.57<\/td><td>408.33<\/td><td>459.41<\/td><td>\u2014<\/td><\/tr>\r\n <tr><td>20<\/td><td>500<\/td><td>508.0<\/td><td>78.55<\/td><td>117.15<\/td><td>117.15<\/td><td>247.81<\/td><td>155.12<\/td><td>381.55<\/td><td>441.49<\/td><td>508.08<\/td><td>564.74<\/td><td>\u2014<\/td><\/tr>\r\n <tr><td>24<\/td><td>600<\/td><td>609.6<\/td><td>94.45<\/td><td>140.97<\/td><td>140.97<\/td><td>355.06<\/td><td>186.90<\/td><td>547.32<\/td><td>639.49<\/td><td>719.83<\/td><td>807.62<\/td><td>\u2014<\/td><\/tr>\r\n <\/tbody>\r\n <\/table>\r\n <\/div>\r\n <p class=\"tip\">Formula: Weight (kg\/m) = (OD - WT) \u00d7 WT \u00d7 0.02466. For stainless steel (density 7,930 kg\/m\u00b3), multiply by 1.01.<\/p>\r\n <\/section>\r\n\r\n \r\n <section class=\"card\">\r\n <h2>Stainless Steel Pipe Sizes - ASME B36.19<\/h2>\r\n <p class=\"desc\">Common wall thicknesses for stainless steel pipes. ASME B36.19 uses the same OD as ASME B36.10 but with different schedule designations (Sch 5S, 10S, 40S, 80S).<\/p>\r\n <div class=\"table-container\">\r\n <table class=\"data-table\" id=\"table-ss\">\r\n <thead><tr><th>NPS<\/th><th>DN<\/th><th>OD (mm)<\/th><th>Sch 5S (mm)<\/th><th>Sch 10S (mm)<\/th><th>Sch 40S (mm)<\/th><th>Sch 80S (mm)<\/th><th>Sch 160 (mm)<\/th><\/tr><\/thead>\r\n <tbody>\r\n <tr><td>1\/8<\/td><td>6<\/td><td>10.3<\/td><td>1.24<\/td><td>1.24<\/td><td>1.73<\/td><td>2.41<\/td><td>\u2014<\/td><\/tr>\r\n <tr><td>1\/4<\/td><td>8<\/td><td>13.7<\/td><td>1.65<\/td><td>1.65<\/td><td>2.24<\/td><td>3.02<\/td><td>\u2014<\/td><\/tr>\r\n <tr><td>3\/8<\/td><td>10<\/td><td>17.1<\/td><td>1.65<\/td><td>1.65<\/td><td>2.31<\/td><td>3.20<\/td><td>\u2014<\/td><\/tr>\r\n <tr><td>1\/2<\/td><td>15<\/td><td>21.3<\/td><td>1.65<\/td><td>2.11<\/td><td>2.77<\/td><td>3.73<\/td><td>4.78<\/td><\/tr>\r\n <tr><td>3\/4<\/td><td>20<\/td><td>26.7<\/td><td>1.65<\/td><td>2.11<\/td><td>2.87<\/td><td>3.91<\/td><td>5.56<\/td><\/tr>\r\n <tr><td>1<\/td><td>25<\/td><td>33.4<\/td><td>1.65<\/td><td>2.77<\/td><td>3.38<\/td><td>4.55<\/td><td>6.35<\/td><\/tr>\r\n <tr><td>1-1\/4<\/td><td>32<\/td><td>42.2<\/td><td>1.65<\/td><td>2.77<\/td><td>3.56<\/td><td>4.85<\/td><td>6.35<\/td><\/tr>\r\n <tr><td>1-1\/2<\/td><td>40<\/td><td>48.3<\/td><td>1.65<\/td><td>2.77<\/td><td>3.68<\/td><td>5.08<\/td><td>7.14<\/td><\/tr>\r\n <tr><td>2<\/td><td>50<\/td><td>60.3<\/td><td>1.65<\/td><td>2.77<\/td><td>3.91<\/td><td>5.54<\/td><td>8.74<\/td><\/tr>\r\n <tr><td>2-1\/2<\/td><td>65<\/td><td>73.0<\/td><td>2.11<\/td><td>3.05<\/td><td>5.16<\/td><td>7.01<\/td><td>9.53<\/td><\/tr>\r\n <tr><td>3<\/td><td>80<\/td><td>88.9<\/td><td>2.11<\/td><td>3.05<\/td><td>5.49<\/td><td>7.62<\/td><td>11.13<\/td><\/tr>\r\n <tr><td>4<\/td><td>100<\/td><td>114.3<\/td><td>2.11<\/td><td>3.05<\/td><td>6.02<\/td><td>8.56<\/td><td>13.49<\/td><\/tr>\r\n <tr><td>6<\/td><td>150<\/td><td>168.3<\/td><td>2.77<\/td><td>3.40<\/td><td>7.11<\/td><td>10.97<\/td><td>18.26<\/td><\/tr>\r\n <tr><td>8<\/td><td>200<\/td><td>219.1<\/td><td>2.77<\/td><td>3.76<\/td><td>8.18<\/td><td>12.70<\/td><td>23.01<\/td><\/tr>\r\n <tr><td>10<\/td><td>250<\/td><td>273.1<\/td><td>3.40<\/td><td>4.19<\/td><td>9.27<\/td><td>12.70<\/td><td>28.58<\/td><\/tr>\r\n <tr><td>12<\/td><td>300<\/td><td>323.9<\/td><td>3.96<\/td><td>4.57<\/td><td>9.53<\/td><td>12.70<\/td><td>33.32<\/td><\/tr>\r\n <\/tbody>\r\n <\/table>\r\n <\/div>\r\n <\/section>\r\n\r\n \r\n <section class=\"card\">\r\n <h2>Common Steel Pipe Standards & Specifications<\/h2>\r\n <p class=\"desc\">Steel pipes are manufactured under various international standards based on application and material requirements.<\/p>\r\n <div class=\"table-container\">\r\n <table class=\"data-table\">\r\n <thead><tr><th>Standard<\/th><th>Material<\/th><th>Size Range<\/th><th>Application<\/th><\/tr><\/thead>\r\n <tbody>\r\n <tr><td>ASTM A53<\/td><td>Carbon Steel (Welded\/Seamless)<\/td><td>NPS 1\/8\" \u2013 26\"<\/td><td>General mechanical, pressure, steam<\/td><\/tr>\r\n <tr><td>ASTM A106<\/td><td>Carbon Steel (Seamless)<\/td><td>NPS 1\/8\" \u2013 48\"<\/td><td>High-temperature service<\/td><\/tr>\r\n <tr><td>API 5L<\/td><td>Carbon\/Alloy Steel (Welded\/Seamless)<\/td><td>NPS 1\/2\" \u2013 80\"<\/td><td>Oil & gas transmission pipelines<\/td><\/tr>\r\n <tr><td>ASTM A312<\/td><td>Stainless Steel (Seamless\/Welded)<\/td><td>NPS 1\/8\" \u2013 30\"<\/td><td>Corrosive service, chemical plants<\/td><\/tr>\r\n <tr><td>ASTM A333<\/td><td>Carbon\/Alloy Steel (Seamless\/Welded)<\/td><td>NPS 1\/8\" \u2013 36\"<\/td><td>Low-temperature service (down to -195\u00b0C)<\/td><\/tr>\r\n <tr><td>ASTM A335<\/td><td>Alloy Steel (Seamless)<\/td><td>NPS 1\/8\" \u2013 48\"<\/td><td>High-temperature service (power plants)<\/td><\/tr>\r\n <\/tbody>\r\n <\/table>\r\n <\/div>\r\n <h3>ASME B36.10 vs B36.19<\/h3>\r\n <p>ASME B36.10 covers carbon and alloy steel pipe dimensions. ASME B36.19 covers stainless steel pipe dimensions. Both standards use the same outside diameters for a given NPS, ensuring compatibility with the same flanges, fittings, and supports.<\/p>\r\n <\/section>\r\n\r\n \r\n <section class=\"card\">\r\n <h2>Frequently Asked Questions<\/h2>\r\n\r\n <div class=\"faq open\">\r\n <div class=\"faq-question\" onclick=\"toggleFAQ(this)\">What is the difference between NPS and DN?<\/div>\r\n <div class=\"faq-answer\">NPS (Nominal Pipe Size) is the North American designation in inches. DN (Diameter Nominal) is the metric equivalent in millimeters. Both are dimensionless labels; neither equals the actual outside diameter for sizes below NPS 14\/DN 350. For example, NPS 2 and DN 50 both refer to the same pipe with an OD of 60.3 mm.<\/div>\r\n <\/div>\r\n <div class=\"faq\">\r\n <div class=\"faq-question\" onclick=\"toggleFAQ(this)\">What does \"Schedule\" (Sch) mean?<\/div>\r\n <div class=\"faq-answer\">Pipe schedule (Sch) indicates wall thickness. Higher schedule numbers indicate thicker walls and higher pressure ratings. Common schedules: Sch 40 (standard weight), Sch 80 (extra strong), Sch 160 (double extra strong), and XXS. For NPS 1\/8\" to 10\", STD equals Sch 40 and XS equals Sch 80.<\/div>\r\n <\/div>\r\n <div class=\"faq\">\r\n <div class=\"faq-question\" onclick=\"toggleFAQ(this)\">Why doesn't NPS equal the actual outside diameter?<\/div>\r\n <div class=\"faq-answer\">Historically, pipe sizes were named based on approximate inside diameter (bore). When manufacturing techniques improved and wall thicknesses were standardized, the OD was fixed while the ID varied with wall thickness. The name (NPS) remained but no longer matches the actual measurement. From NPS 14 and above, NPS equals the actual OD in inches.<\/div>\r\n <\/div>\r\n <div class=\"faq\">\r\n <div class=\"faq-question\" onclick=\"toggleFAQ(this)\">What is the OD of a 2-inch steel pipe?<\/div>\r\n <div class=\"faq-answer\">The outside diameter of NPS 2 pipe is 2.375 inches (60.3 mm). This OD is constant regardless of schedule (wall thickness). Only the inside diameter (ID) changes with different wall thicknesses.<\/div>\r\n <\/div>\r\n <div class=\"faq\">\r\n <div class=\"faq-question\" onclick=\"toggleFAQ(this)\">What is the difference between Sch 40 and Sch 80?<\/div>\r\n <div class=\"faq-answer\">Sch 80 has a thicker wall than Sch 40 for the same NPS. For example, NPS 2 Sch 40 has a wall thickness of 3.91 mm (weight 5.44 kg\/m), while Sch 80 has 5.54 mm (weight 7.48 kg\/m). The OD remains 60.3 mm; the ID decreases from 52.5 mm to 49.2 mm.<\/div>\r\n <\/div>\r\n <div class=\"faq\">\r\n <div class=\"faq-question\" onclick=\"toggleFAQ(this)\">How is steel pipe weight calculated?<\/div>\r\n <div class=\"faq-answer\">Weight per meter (kg\/m) = (OD - WT) \u00d7 WT \u00d7 0.02466, where OD and WT are in millimeters. The constant 0.02466 is derived from steel density (7,850 kg\/m\u00b3) \u00d7 \u03c0 \/ 1000. For stainless steel (7,930 kg\/m\u00b3), use 0.02491.<\/div>\r\n <\/div>\r\n <\/section>\r\n <\/main>\r\n\r\n \r\n <aside class=\"right-sidebar\">\r\n\r\n <div class=\"sidebar-card\">\r\n <h3>Quick Reference<\/h3>\r\n <ul class=\"quick-ref\">\r\n <li><span>NPS 1\/2 OD<\/span><span class=\"value\">21.3 mm<\/span><\/li>\r\n <li><span>NPS 1 OD<\/span><span class=\"value\">33.4 mm<\/span><\/li>\r\n <li><span>NPS 2 OD<\/span><span class=\"value\">60.3 mm<\/span><\/li>\r\n <li><span>NPS 4 OD<\/span><span class=\"value\">114.3 mm<\/span><\/li>\r\n <li><span>NPS 6 OD<\/span><span class=\"value\">168.3 mm<\/span><\/li>\r\n <li><span>NPS 8 OD<\/span><span class=\"value\">219.1 mm<\/span><\/li>\r\n <li><span>NPS 10 OD<\/span><span class=\"value\">273.1 mm<\/span><\/li>\r\n <li><span>NPS 12 OD<\/span><span class=\"value\">323.9 mm<\/span><\/li>\r\n <\/ul>\r\n <\/div>\r\n\r\n <div class=\"sidebar-card\">\r\n <h3>Common Schedules<\/h3>\r\n <ul class=\"quick-ref\">\r\n <li><span>Sch 5S \/ 10S<\/span><span class=\"value\">Stainless only<\/span><\/li>\r\n <li><span>Sch 10<\/span><span class=\"value\">Light wall<\/span><\/li>\r\n <li><span>Sch 20<\/span><span class=\"value\">Light wall<\/span><\/li>\r\n <li><span>Sch 40 \/ STD<\/span><span class=\"value\">Standard weight<\/span><\/li>\r\n <li><span>Sch 80 \/ XS<\/span><span class=\"value\">Extra strong<\/span><\/li>\r\n <li><span>Sch 160<\/span><span class=\"value\">Heavy wall<\/span><\/li>\r\n <li><span>XXS<\/span><span class=\"value\">Double extra strong<\/span><\/li>\r\n <\/ul>\r\n <\/div>\r\n\r\n <div class=\"sidebar-card\">\r\n <h3>Weight Formula<\/h3>\r\n <ul class=\"quick-ref\">\r\n <li><span>Carbon Steel<\/span><span class=\"value\">\u00d70.02466<\/span><\/li>\r\n <li><span>SS 304\/316<\/span><span class=\"value\">\u00d70.02491<\/span><\/li>\r\n <li><span>Aluminum<\/span><span class=\"value\">\u00d70.00852<\/span><\/li>\r\n <li><span>Copper<\/span><span class=\"value\">\u00d70.02813<\/span><\/li>\r\n <li><span>Formula<\/span><span class=\"value\">(OD-WT)\u00d7WT\u00d7K<\/span><\/li>\r\n <\/ul>\r\n <p style=\"font-size:9px;color:#aaa;margin-top:4px;\">OD and WT in mm<\/p>\r\n <\/div>\r\n\r\n <div class=\"sidebar-card\">\r\n <h3>Important Note<\/h3>\r\n <div class=\"tip-box\">\r\n <strong>Pipe Sizes Are Nominal<\/strong>\r\n For sizes below NPS 14, the NPS\/DN label does not equal the actual OD. Always use the tabulated OD values from ASME B36.10\/B36.19 for calculations and procurement.\r\n <\/div>\r\n <\/div>\r\n <\/aside>\r\n <\/div>\r\n <\/div>\r\n<\/div>\r\n\r\n<script>\r\n function toggleFAQ(el) {\r\n el.parentElement.classList.toggle('open');\r\n }\r\n\r\n function filterScheduleTable() {\r\n const input = document.getElementById('scheduleFilterInput');\r\n const filterText = input.value.trim().toUpperCase();\r\n const tbody = document.querySelector('#table-schedule tbody');\r\n if (!tbody) return;\r\n\r\n const rows = tbody.querySelectorAll('tr');\r\n let visibleRows = 0;\r\n\r\n rows.forEach(row => {\r\n const rowText = row.textContent.toUpperCase();\r\n if (filterText === '' || rowText.includes(filterText)) {\r\n row.style.display = '';\r\n visibleRows++;\r\n } else {\r\n row.style.display = 'none';\r\n }\r\n });\r\n\r\n const stats = document.getElementById('scheduleFilterStats');\r\n if (filterText === '') {\r\n stats.textContent = `Showing all (${rows.length} 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clearScheduleFilter;\r\n<\/script>\r\n<\/body>\r\n<\/html>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Steel Pipe Sizes Chart | ASME B36.10 & B36.19 | Baowu Steel Steel Pipe Sizes Chart Complete dimensional reference: NPS, 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}\r\n .filter-btn { height: 46px; padding: 0 24px; background: linear-gradient(135deg, #0c3483 0%, #4facfe 100%); color: #fff; border: none; border-radius: 8px; font-size: 14px; font-weight: 600; cursor: pointer; transition: transform .2s, box-shadow .2s; }\r\n .filter-btn:hover { transform: translateY(-1px); box-shadow: 0 6px 16px rgba(79,172,254,.3); }\r\n .filter-clear { height: 46px; padding: 0 20px; background: transparent; color: #888; border: 2px solid #e0e0e0; border-radius: 8px; font-size: 13px; font-weight: 500; cursor: pointer; transition: all .2s; }\r\n .filter-clear:hover { border-color: #f56565; color: #f56565; background: #fff5f5; }\r\n .filter-stats { margin-left: auto; font-size: 13px; color: #666; white-space: nowrap; }\r\n @media (max-width: 1100px) { .three-col-grid { grid-template-columns: 1fr; } .left-sidebar, .right-sidebar { position: static; max-height: none; overflow-y: visible; } .filter-section { flex-direction: column; align-items: stretch; } .filter-stats { margin-left: 0; text-align: center; } }\r\n @media (max-width: 600px) { .card { padding: 22px 18px; } }\r\n <\/style>\r\n<\/head>\r\n<body>\r\n\r\n<div class=\"page-container\">\r\n\r\n <section class=\"hero-section\">\r\n <h1>Steel Pipe Sizes Chart<\/h1>\r\n <p>Complete dimensional reference: NPS, DN, OD, wall thicknesses (SCH 5S through XXS), and weight per meter. Fully compliant with ASME B36.10 and B36.19 standards.<\/p>\r\n <\/section>\r\n\r\n <div class=\"breadcrumb\">\r\n <a href=\"https:\/\/baowu-steel.com\/\">Home<\/a> \u203a\r\n <a href=\"https:\/\/baowu-steel.com\/tools\/\">Tools<\/a> \u203a\r\n Steel Pipe Sizes Chart\r\n <\/div>\r\n\r\n <div class=\"content-wrapper\">\r\n <div class=\"three-col-grid\">\r\n\r\n \r\n <aside class=\"left-sidebar\">\r\n <div class=\"contact-card\">\r\n <h3>Contact Us<\/h3>\r\n <p>Get factory-direct pricing. Fast reply guaranteed.<\/p>\r\n <a href=\"mailto:sales@baowu-steel.com\" class=\"cta-btn\">Get Free Quote<\/a>\r\n <div class=\"contact-info\">\r\n <a href=\"tel:+8618764178985\"><span>\ud83d\udcde<\/span> +86 187 6417 8985<\/a>\r\n <a href=\"mailto:sales@baowu-steel.com\"><span>\u2709<\/span> sales@baowu-steel.com<\/a>\r\n <a href=\"https:\/\/wa.me\/8618764178985\" target=\"_blank\" rel=\"noopener\"><span>\ud83d\udcac<\/span> WhatsApp<\/a>\r\n <\/div>\r\n <\/div>\r\n\r\n <div class=\"sidebar-card\">\r\n <h3>Steel Tools<\/h3>\r\n <nav class=\"tool-links\">\r\n <a href=\"https:\/\/baowu-steel.com\/tools\/pipe-weight-calculator\/\"><span class=\"icon\">\ud83d\udccf<\/span> Steel Pipe Weight Calculator<\/a>\r\n <a href=\"https:\/\/baowu-steel.com\/steel-plate-weight-calculator\/\"><span class=\"icon\">\ud83d\udcd0<\/span> Steel Plate Weight Calculator<\/a>\r\n <a href=\"https:\/\/baowu-steel.com\/steel-coil-weight-calculator\/\"><span class=\"icon\">\u2699\ufe0f<\/span> Steel Coil Weight Calculator<\/a>\r\n <a href=\"https:\/\/baowu-steel.com\/galvanized-steel-coating-thickness-chart\/\"><span class=\"icon\">\ud83d\udee1\ufe0f<\/span> Galvanized Steel Coating Chart<\/a>\r\n <a href=\"https:\/\/baowu-steel.com\/steel-grade-comparison-chart\/\"><span class=\"icon\">\ud83d\udd0d<\/span> Steel Grade Comparison Chart<\/a>\r\n <a href=\"https:\/\/baowu-steel.com\/h-beam-weight-chart\/\"><span class=\"icon\">\ud83c\udfd7\ufe0f<\/span> H Beam Weight Chart<\/a>\r\n <a href=\"https:\/\/baowu-steel.com\/steel-price-per-ton-today\/\"><span class=\"icon\">\ud83d\udcb0<\/span> Steel Price Per Ton Today<\/a>\r\n <a href=\"https:\/\/baowu-steel.com\/steel-pipe-sizes-chart\/\" class=\"current\"><span class=\"icon\">\ud83d\udcca<\/span> Steel Pipe Sizes Chart<\/a>\r\n <a href=\"https:\/\/baowu-steel.com\/sheet-metal-gauge-chart\/\"><span class=\"icon\">\ud83d\udccb<\/span> Sheet Metal Gauge Chart<\/a>\r\n <\/nav>\r\n <\/div>\r\n <\/aside>\r\n\r\n \r\n <main class=\"main-content\">\r\n\r\n \r\n <section class=\"card\">\r\n <h2>NPS \/ DN \/ OD Conversion Reference<\/h2>\r\n <p class=\"desc\">Nominal Pipe Size (NPS) and Diameter Nominal (DN) are dimensionless designations that identify pipe size. The outside diameter (OD) is the actual physical dimension.<\/p>\r\n <div class=\"note-box\">\r\n <p><strong>Important:<\/strong> For sizes below NPS 14 (DN 350), neither NPS nor DN equals the actual OD. For example, NPS 2 pipe has an OD of 60.3 mm, not 2 inches (50.8 mm). From NPS 14 and above, NPS equals the actual OD in inches.<\/p>\r\n <\/div>\r\n <div class=\"table-container\">\r\n <table class=\"data-table\" id=\"table-nps\">\r\n <thead><tr><th>NPS (in)<\/th><th>DN (mm)<\/th><th>OD (mm)<\/th><th>OD (in)<\/th><th>NPS (in)<\/th><th>DN (mm)<\/th><th>OD (mm)<\/th><th>OD (in)<\/th><\/tr><\/thead>\r\n <tbody>\r\n <tr><td>1\/8<\/td><td>6<\/td><td>10.3<\/td><td>0.405<\/td><td>10<\/td><td>250<\/td><td>273.1<\/td><td>10.750<\/td><\/tr>\r\n <tr><td>1\/4<\/td><td>8<\/td><td>13.7<\/td><td>0.540<\/td><td>12<\/td><td>300<\/td><td>323.9<\/td><td>12.750<\/td><\/tr>\r\n <tr><td>3\/8<\/td><td>10<\/td><td>17.1<\/td><td>0.675<\/td><td>14<\/td><td>350<\/td><td>355.6<\/td><td>14.000<\/td><\/tr>\r\n <tr><td>1\/2<\/td><td>15<\/td><td>21.3<\/td><td>0.840<\/td><td>16<\/td><td>400<\/td><td>406.4<\/td><td>16.000<\/td><\/tr>\r\n <tr><td>3\/4<\/td><td>20<\/td><td>26.7<\/td><td>1.050<\/td><td>18<\/td><td>450<\/td><td>457.2<\/td><td>18.000<\/td><\/tr>\r\n <tr><td>1<\/td><td>25<\/td><td>33.4<\/td><td>1.315<\/td><td>20<\/td><td>500<\/td><td>508.0<\/td><td>20.000<\/td><\/tr>\r\n <tr><td>1-1\/4<\/td><td>32<\/td><td>42.2<\/td><td>1.660<\/td><td>24<\/td><td>600<\/td><td>610.0<\/td><td>24.000<\/td><\/tr>\r\n <tr><td>1-1\/2<\/td><td>40<\/td><td>48.3<\/td><td>1.900<\/td><td>30<\/td><td>750<\/td><td>762.0<\/td><td>30.000<\/td><\/tr>\r\n <tr><td>2<\/td><td>50<\/td><td>60.3<\/td><td>2.375<\/td><td>36<\/td><td>900<\/td><td>914.4<\/td><td>36.000<\/td><\/tr>\r\n <tr><td>2-1\/2<\/td><td>65<\/td><td>73.0<\/td><td>2.875<\/td><td>42<\/td><td>1050<\/td><td>1066.8<\/td><td>42.000<\/td><\/tr>\r\n <tr><td>3<\/td><td>80<\/td><td>88.9<\/td><td>3.500<\/td><td>48<\/td><td>1200<\/td><td>1219.2<\/td><td>48.000<\/td><\/tr>\r\n <tr><td>4<\/td><td>100<\/td><td>114.3<\/td><td>4.500<\/td><td>56<\/td><td>1400<\/td><td>1422.4<\/td><td>56.000<\/td><\/tr>\r\n <tr><td>6<\/td><td>150<\/td><td>168.3<\/td><td>6.625<\/td><td>64<\/td><td>1600<\/td><td>1625.6<\/td><td>64.000<\/td><\/tr>\r\n <tr><td>8<\/td><td>200<\/td><td>219.1<\/td><td>8.625<\/td><td>72<\/td><td>1800<\/td><td>1828.8<\/td><td>72.000<\/td><\/tr>\r\n <\/tbody>\r\n <\/table>\r\n <\/div>\r\n <\/section>\r\n\r\n \r\n <section class=\"card\">\r\n <h2>Pipe Schedule Wall Thickness Chart (mm) - ASME B36.10<\/h2>\r\n <p class=\"desc\">Wall thickness values in millimeters for carbon and alloy steel pipes per ASME B36.10. STD (Standard) equals Sch 40 for NPS 1\/8 to 10; XS (Extra Strong) equals Sch 80 for NPS 1\/8 to 8.<\/p>\r\n\r\n <div class=\"filter-section\">\r\n <input type=\"text\" id=\"scheduleFilterInput\" class=\"filter-input\" placeholder=\"Filter by NPS or DN, e.g. 2, 50, 114.3...\" onkeyup=\"filterScheduleTable()\">\r\n <button class=\"filter-btn\" onclick=\"filterScheduleTable()\">Filter<\/button>\r\n <button class=\"filter-clear\" onclick=\"clearScheduleFilter()\">Clear<\/button>\r\n <span class=\"filter-stats\" id=\"scheduleFilterStats\">Showing all<\/span>\r\n <\/div>\r\n\r\n <div class=\"table-container\">\r\n <table class=\"data-table\" id=\"table-schedule\">\r\n <thead><tr><th>NPS<\/th><th>DN<\/th><th>OD (mm)<\/th><th>Sch 5S<\/th><th>Sch 10S<\/th><th>Sch 10<\/th><th>Sch 20<\/th><th>Sch 30<\/th><th>Sch 40\/STD<\/th><th>Sch 60<\/th><th>Sch 80\/XS<\/th><th>Sch 100<\/th><th>Sch 120<\/th><th>Sch 140<\/th><th>Sch 160<\/th><th>XXS<\/th><\/tr><\/thead>\r\n <tbody>\r\n <tr><td>1\/8<\/td><td>6<\/td><td>10.3<\/td><td>1.24<\/td><td>1.24<\/td><td>1.73<\/td><td>\u2014<\/td><td>\u2014<\/td><td>1.73<\/td><td>\u2014<\/td><td>2.41<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><\/tr>\r\n <tr><td>1\/4<\/td><td>8<\/td><td>13.7<\/td><td>1.65<\/td><td>1.65<\/td><td>2.24<\/td><td>\u2014<\/td><td>\u2014<\/td><td>2.24<\/td><td>\u2014<\/td><td>3.02<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><\/tr>\r\n <tr><td>3\/8<\/td><td>10<\/td><td>17.1<\/td><td>1.65<\/td><td>1.65<\/td><td>2.31<\/td><td>\u2014<\/td><td>\u2014<\/td><td>2.31<\/td><td>\u2014<\/td><td>3.20<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><\/tr>\r\n <tr><td>1\/2<\/td><td>15<\/td><td>21.3<\/td><td>1.65<\/td><td>2.11<\/td><td>2.11<\/td><td>\u2014<\/td><td>\u2014<\/td><td>2.77<\/td><td>\u2014<\/td><td>3.73<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>4.78<\/td><td>7.47<\/td><\/tr>\r\n <tr><td>3\/4<\/td><td>20<\/td><td>26.7<\/td><td>1.65<\/td><td>2.11<\/td><td>2.11<\/td><td>\u2014<\/td><td>\u2014<\/td><td>2.87<\/td><td>\u2014<\/td><td>3.91<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>5.56<\/td><td>7.82<\/td><\/tr>\r\n <tr><td>1<\/td><td>25<\/td><td>33.4<\/td><td>1.65<\/td><td>2.77<\/td><td>2.77<\/td><td>\u2014<\/td><td>\u2014<\/td><td>3.38<\/td><td>\u2014<\/td><td>4.55<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>6.35<\/td><td>9.09<\/td><\/tr>\r\n <tr><td>1-1\/4<\/td><td>32<\/td><td>42.2<\/td><td>1.65<\/td><td>2.77<\/td><td>2.77<\/td><td>\u2014<\/td><td>\u2014<\/td><td>3.56<\/td><td>\u2014<\/td><td>4.85<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>6.35<\/td><td>9.70<\/td><\/tr>\r\n <tr><td>1-1\/2<\/td><td>40<\/td><td>48.3<\/td><td>1.65<\/td><td>2.77<\/td><td>2.77<\/td><td>\u2014<\/td><td>\u2014<\/td><td>3.68<\/td><td>\u2014<\/td><td>5.08<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>7.14<\/td><td>10.15<\/td><\/tr>\r\n <tr><td>2<\/td><td>50<\/td><td>60.3<\/td><td>1.65<\/td><td>2.77<\/td><td>2.77<\/td><td>\u2014<\/td><td>\u2014<\/td><td>3.91<\/td><td>\u2014<\/td><td>5.54<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>8.74<\/td><td>11.07<\/td><\/tr>\r\n <tr><td>2-1\/2<\/td><td>65<\/td><td>73.0<\/td><td>2.11<\/td><td>3.05<\/td><td>3.05<\/td><td>\u2014<\/td><td>\u2014<\/td><td>5.16<\/td><td>\u2014<\/td><td>7.01<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>9.53<\/td><td>14.02<\/td><\/tr>\r\n <tr><td>3<\/td><td>80<\/td><td>88.9<\/td><td>2.11<\/td><td>3.05<\/td><td>3.05<\/td><td>\u2014<\/td><td>\u2014<\/td><td>5.49<\/td><td>\u2014<\/td><td>7.62<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>11.13<\/td><td>15.24<\/td><\/tr>\r\n <tr><td>3-1\/2<\/td><td>90<\/td><td>101.6<\/td><td>2.11<\/td><td>3.05<\/td><td>3.05<\/td><td>\u2014<\/td><td>\u2014<\/td><td>5.74<\/td><td>\u2014<\/td><td>8.08<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>16.15<\/td><\/tr>\r\n <tr><td>4<\/td><td>100<\/td><td>114.3<\/td><td>2.11<\/td><td>3.05<\/td><td>3.05<\/td><td>\u2014<\/td><td>\u2014<\/td><td>6.02<\/td><td>\u2014<\/td><td>8.56<\/td><td>\u2014<\/td><td>11.13<\/td><td>\u2014<\/td><td>13.49<\/td><td>17.12<\/td><\/tr>\r\n <tr><td>5<\/td><td>125<\/td><td>141.3<\/td><td>2.77<\/td><td>3.40<\/td><td>3.40<\/td><td>\u2014<\/td><td>\u2014<\/td><td>6.55<\/td><td>\u2014<\/td><td>9.53<\/td><td>\u2014<\/td><td>12.70<\/td><td>\u2014<\/td><td>15.88<\/td><td>19.05<\/td><\/tr>\r\n <tr><td>6<\/td><td>150<\/td><td>168.3<\/td><td>2.77<\/td><td>3.40<\/td><td>3.40<\/td><td>\u2014<\/td><td>\u2014<\/td><td>7.11<\/td><td>\u2014<\/td><td>10.97<\/td><td>\u2014<\/td><td>14.27<\/td><td>\u2014<\/td><td>18.26<\/td><td>21.95<\/td><\/tr>\r\n <tr><td>8<\/td><td>200<\/td><td>219.1<\/td><td>2.77<\/td><td>3.76<\/td><td>3.76<\/td><td>6.35<\/td><td>7.04<\/td><td>8.18<\/td><td>10.31<\/td><td>12.70<\/td><td>15.09<\/td><td>18.26<\/td><td>20.62<\/td><td>23.01<\/td><td>22.23<\/td><\/tr>\r\n <tr><td>10<\/td><td>250<\/td><td>273.1<\/td><td>3.40<\/td><td>4.19<\/td><td>4.19<\/td><td>6.35<\/td><td>7.80<\/td><td>9.27<\/td><td>12.70<\/td><td>12.70<\/td><td>18.26<\/td><td>21.44<\/td><td>25.40<\/td><td>28.58<\/td><td>25.40<\/td><\/tr>\r\n <tr><td>12<\/td><td>300<\/td><td>323.9<\/td><td>3.96<\/td><td>4.57<\/td><td>4.57<\/td><td>6.35<\/td><td>8.38<\/td><td>9.53<\/td><td>14.27<\/td><td>12.70<\/td><td>21.44<\/td><td>25.40<\/td><td>28.58<\/td><td>33.32<\/td><td>25.40<\/td><\/tr>\r\n <tr><td>14<\/td><td>350<\/td><td>355.6<\/td><td>3.96<\/td><td>4.78<\/td><td>6.35<\/td><td>7.92<\/td><td>9.53<\/td><td>9.53<\/td><td>15.09<\/td><td>12.70<\/td><td>23.83<\/td><td>27.79<\/td><td>31.75<\/td><td>35.71<\/td><td>\u2014<\/td><\/tr>\r\n <tr><td>16<\/td><td>400<\/td><td>406.4<\/td><td>4.19<\/td><td>4.78<\/td><td>6.35<\/td><td>7.92<\/td><td>9.53<\/td><td>9.53<\/td><td>16.66<\/td><td>12.70<\/td><td>26.19<\/td><td>30.96<\/td><td>36.53<\/td><td>40.49<\/td><td>\u2014<\/td><\/tr>\r\n <tr><td>18<\/td><td>450<\/td><td>457.2<\/td><td>4.19<\/td><td>4.78<\/td><td>6.35<\/td><td>7.92<\/td><td>11.13<\/td><td>9.53<\/td><td>18.26<\/td><td>12.70<\/td><td>29.36<\/td><td>34.93<\/td><td>39.67<\/td><td>45.24<\/td><td>\u2014<\/td><\/tr>\r\n <tr><td>20<\/td><td>500<\/td><td>508.0<\/td><td>4.78<\/td><td>5.54<\/td><td>6.35<\/td><td>9.53<\/td><td>12.70<\/td><td>9.53<\/td><td>20.62<\/td><td>12.70<\/td><td>32.54<\/td><td>38.10<\/td><td>44.45<\/td><td>50.01<\/td><td>\u2014<\/td><\/tr>\r\n <tr><td>24<\/td><td>600<\/td><td>609.6<\/td><td>5.54<\/td><td>6.35<\/td><td>6.35<\/td><td>9.53<\/td><td>14.27<\/td><td>9.53<\/td><td>24.61<\/td><td>12.70<\/td><td>38.89<\/td><td>46.02<\/td><td>52.37<\/td><td>59.54<\/td><td>\u2014<\/td><\/tr>\r\n <\/tbody>\r\n <\/table>\r\n <\/div>\r\n <p class=\"tip\">Note: Sch 5S and Sch 10S are primarily used for stainless steel pipes per ASME B36.19. Wall thicknesses of 6.35 mm and above are rounded to two decimal places.<\/p>\r\n <\/section>\r\n\r\n \r\n <section class=\"card\">\r\n <h2>Carbon Steel Pipe Weight Chart (kg\/m) - ASME B36.10<\/h2>\r\n <p class=\"desc\">Weight per meter for carbon steel pipes (density 7,850 kg\/m\u00b3). Most commonly used schedules shown.<\/p>\r\n <div class=\"table-container\">\r\n <table class=\"data-table\" id=\"table-weight\">\r\n <thead><tr><th>NPS<\/th><th>DN<\/th><th>OD (mm)<\/th><th>Sch 10<\/th><th>Sch 20<\/th><th>Sch 40\/STD<\/th><th>Sch 60<\/th><th>Sch 80\/XS<\/th><th>Sch 100<\/th><th>Sch 120<\/th><th>Sch 140<\/th><th>Sch 160<\/th><th>XXS<\/th><\/tr><\/thead>\r\n <tbody>\r\n <tr><td>1\/8<\/td><td>6<\/td><td>10.3<\/td><td>0.37<\/td><td>\u2014<\/td><td>0.37<\/td><td>\u2014<\/td><td>0.47<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><\/tr>\r\n <tr><td>1\/4<\/td><td>8<\/td><td>13.7<\/td><td>0.63<\/td><td>\u2014<\/td><td>0.63<\/td><td>\u2014<\/td><td>0.80<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><\/tr>\r\n <tr><td>3\/8<\/td><td>10<\/td><td>17.1<\/td><td>0.80<\/td><td>\u2014<\/td><td>0.80<\/td><td>\u2014<\/td><td>1.10<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><\/tr>\r\n <tr><td>1\/2<\/td><td>15<\/td><td>21.3<\/td><td>1.01<\/td><td>\u2014<\/td><td>1.27<\/td><td>\u2014<\/td><td>1.62<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>1.95<\/td><td>2.55<\/td><\/tr>\r\n <tr><td>3\/4<\/td><td>20<\/td><td>26.7<\/td><td>1.28<\/td><td>\u2014<\/td><td>1.69<\/td><td>\u2014<\/td><td>2.20<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>2.98<\/td><td>3.64<\/td><\/tr>\r\n <tr><td>1<\/td><td>25<\/td><td>33.4<\/td><td>2.09<\/td><td>\u2014<\/td><td>2.50<\/td><td>\u2014<\/td><td>3.24<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>4.24<\/td><td>5.45<\/td><\/tr>\r\n <tr><td>1-1\/4<\/td><td>32<\/td><td>42.2<\/td><td>2.69<\/td><td>\u2014<\/td><td>3.39<\/td><td>\u2014<\/td><td>4.47<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>5.41<\/td><td>7.77<\/td><\/tr>\r\n <tr><td>1-1\/2<\/td><td>40<\/td><td>48.3<\/td><td>3.11<\/td><td>\u2014<\/td><td>4.05<\/td><td>\u2014<\/td><td>5.41<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>7.25<\/td><td>9.56<\/td><\/tr>\r\n <tr><td>2<\/td><td>50<\/td><td>60.3<\/td><td>3.93<\/td><td>\u2014<\/td><td>5.44<\/td><td>\u2014<\/td><td>7.48<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>11.11<\/td><td>13.44<\/td><\/tr>\r\n <tr><td>2-1\/2<\/td><td>65<\/td><td>73.0<\/td><td>5.26<\/td><td>\u2014<\/td><td>8.63<\/td><td>\u2014<\/td><td>11.41<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>14.92<\/td><td>20.39<\/td><\/tr>\r\n <tr><td>3<\/td><td>80<\/td><td>88.9<\/td><td>6.45<\/td><td>\u2014<\/td><td>11.29<\/td><td>\u2014<\/td><td>15.27<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>21.35<\/td><td>27.68<\/td><\/tr>\r\n <tr><td>4<\/td><td>100<\/td><td>114.3<\/td><td>8.37<\/td><td>\u2014<\/td><td>16.07<\/td><td>\u2014<\/td><td>22.32<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>33.54<\/td><td>41.03<\/td><\/tr>\r\n <tr><td>5<\/td><td>125<\/td><td>141.3<\/td><td>11.57<\/td><td>\u2014<\/td><td>21.77<\/td><td>\u2014<\/td><td>30.97<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>49.12<\/td><td>57.44<\/td><\/tr>\r\n <tr><td>6<\/td><td>150<\/td><td>168.3<\/td><td>13.84<\/td><td>\u2014<\/td><td>28.26<\/td><td>\u2014<\/td><td>42.56<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>67.57<\/td><td>79.22<\/td><\/tr>\r\n <tr><td>8<\/td><td>200<\/td><td>219.1<\/td><td>19.98<\/td><td>33.31<\/td><td>42.55<\/td><td>53.08<\/td><td>64.64<\/td><td>75.92<\/td><td>90.44<\/td><td>100.95<\/td><td>111.26<\/td><td>107.88<\/td><\/tr>\r\n <tr><td>10<\/td><td>250<\/td><td>273.1<\/td><td>27.79<\/td><td>41.76<\/td><td>60.31<\/td><td>81.55<\/td><td>81.55<\/td><td>114.77<\/td><td>133.13<\/td><td>155.14<\/td><td>172.33<\/td><td>155.14<\/td><\/tr>\r\n <tr><td>12<\/td><td>300<\/td><td>323.9<\/td><td>36.02<\/td><td>49.71<\/td><td>73.86<\/td><td>108.96<\/td><td>97.44<\/td><td>160.06<\/td><td>186.97<\/td><td>208.15<\/td><td>238.76<\/td><td>186.97<\/td><\/tr>\r\n <tr><td>14<\/td><td>350<\/td><td>355.6<\/td><td>54.76<\/td><td>67.90<\/td><td>81.33<\/td><td>126.71<\/td><td>107.39<\/td><td>195.00<\/td><td>224.66<\/td><td>253.55<\/td><td>281.70<\/td><td>\u2014<\/td><\/tr>\r\n <tr><td>16<\/td><td>400<\/td><td>406.4<\/td><td>62.64<\/td><td>77.83<\/td><td>93.27<\/td><td>160.12<\/td><td>123.30<\/td><td>245.47<\/td><td>286.54<\/td><td>333.18<\/td><td>365.35<\/td><td>\u2014<\/td><\/tr>\r\n <tr><td>18<\/td><td>450<\/td><td>457.2<\/td><td>70.61<\/td><td>87.75<\/td><td>105.21<\/td><td>197.60<\/td><td>139.20<\/td><td>309.66<\/td><td>363.57<\/td><td>408.33<\/td><td>459.41<\/td><td>\u2014<\/td><\/tr>\r\n <tr><td>20<\/td><td>500<\/td><td>508.0<\/td><td>78.55<\/td><td>117.15<\/td><td>117.15<\/td><td>247.81<\/td><td>155.12<\/td><td>381.55<\/td><td>441.49<\/td><td>508.08<\/td><td>564.74<\/td><td>\u2014<\/td><\/tr>\r\n <tr><td>24<\/td><td>600<\/td><td>609.6<\/td><td>94.45<\/td><td>140.97<\/td><td>140.97<\/td><td>355.06<\/td><td>186.90<\/td><td>547.32<\/td><td>639.49<\/td><td>719.83<\/td><td>807.62<\/td><td>\u2014<\/td><\/tr>\r\n <\/tbody>\r\n <\/table>\r\n <\/div>\r\n <p class=\"tip\">Formula: Weight (kg\/m) = (OD - WT) \u00d7 WT \u00d7 0.02466. For stainless steel (density 7,930 kg\/m\u00b3), multiply by 1.01.<\/p>\r\n <\/section>\r\n\r\n \r\n <section class=\"card\">\r\n <h2>Stainless Steel Pipe Sizes - ASME B36.19<\/h2>\r\n <p class=\"desc\">Common wall thicknesses for stainless steel pipes. ASME B36.19 uses the same OD as ASME B36.10 but with different schedule designations (Sch 5S, 10S, 40S, 80S).<\/p>\r\n <div class=\"table-container\">\r\n <table class=\"data-table\" id=\"table-ss\">\r\n <thead><tr><th>NPS<\/th><th>DN<\/th><th>OD (mm)<\/th><th>Sch 5S (mm)<\/th><th>Sch 10S (mm)<\/th><th>Sch 40S (mm)<\/th><th>Sch 80S (mm)<\/th><th>Sch 160 (mm)<\/th><\/tr><\/thead>\r\n <tbody>\r\n <tr><td>1\/8<\/td><td>6<\/td><td>10.3<\/td><td>1.24<\/td><td>1.24<\/td><td>1.73<\/td><td>2.41<\/td><td>\u2014<\/td><\/tr>\r\n <tr><td>1\/4<\/td><td>8<\/td><td>13.7<\/td><td>1.65<\/td><td>1.65<\/td><td>2.24<\/td><td>3.02<\/td><td>\u2014<\/td><\/tr>\r\n <tr><td>3\/8<\/td><td>10<\/td><td>17.1<\/td><td>1.65<\/td><td>1.65<\/td><td>2.31<\/td><td>3.20<\/td><td>\u2014<\/td><\/tr>\r\n <tr><td>1\/2<\/td><td>15<\/td><td>21.3<\/td><td>1.65<\/td><td>2.11<\/td><td>2.77<\/td><td>3.73<\/td><td>4.78<\/td><\/tr>\r\n <tr><td>3\/4<\/td><td>20<\/td><td>26.7<\/td><td>1.65<\/td><td>2.11<\/td><td>2.87<\/td><td>3.91<\/td><td>5.56<\/td><\/tr>\r\n <tr><td>1<\/td><td>25<\/td><td>33.4<\/td><td>1.65<\/td><td>2.77<\/td><td>3.38<\/td><td>4.55<\/td><td>6.35<\/td><\/tr>\r\n <tr><td>1-1\/4<\/td><td>32<\/td><td>42.2<\/td><td>1.65<\/td><td>2.77<\/td><td>3.56<\/td><td>4.85<\/td><td>6.35<\/td><\/tr>\r\n <tr><td>1-1\/2<\/td><td>40<\/td><td>48.3<\/td><td>1.65<\/td><td>2.77<\/td><td>3.68<\/td><td>5.08<\/td><td>7.14<\/td><\/tr>\r\n <tr><td>2<\/td><td>50<\/td><td>60.3<\/td><td>1.65<\/td><td>2.77<\/td><td>3.91<\/td><td>5.54<\/td><td>8.74<\/td><\/tr>\r\n <tr><td>2-1\/2<\/td><td>65<\/td><td>73.0<\/td><td>2.11<\/td><td>3.05<\/td><td>5.16<\/td><td>7.01<\/td><td>9.53<\/td><\/tr>\r\n <tr><td>3<\/td><td>80<\/td><td>88.9<\/td><td>2.11<\/td><td>3.05<\/td><td>5.49<\/td><td>7.62<\/td><td>11.13<\/td><\/tr>\r\n <tr><td>4<\/td><td>100<\/td><td>114.3<\/td><td>2.11<\/td><td>3.05<\/td><td>6.02<\/td><td>8.56<\/td><td>13.49<\/td><\/tr>\r\n <tr><td>6<\/td><td>150<\/td><td>168.3<\/td><td>2.77<\/td><td>3.40<\/td><td>7.11<\/td><td>10.97<\/td><td>18.26<\/td><\/tr>\r\n <tr><td>8<\/td><td>200<\/td><td>219.1<\/td><td>2.77<\/td><td>3.76<\/td><td>8.18<\/td><td>12.70<\/td><td>23.01<\/td><\/tr>\r\n <tr><td>10<\/td><td>250<\/td><td>273.1<\/td><td>3.40<\/td><td>4.19<\/td><td>9.27<\/td><td>12.70<\/td><td>28.58<\/td><\/tr>\r\n <tr><td>12<\/td><td>300<\/td><td>323.9<\/td><td>3.96<\/td><td>4.57<\/td><td>9.53<\/td><td>12.70<\/td><td>33.32<\/td><\/tr>\r\n <\/tbody>\r\n <\/table>\r\n <\/div>\r\n <\/section>\r\n\r\n \r\n <section class=\"card\">\r\n <h2>Common Steel Pipe Standards & Specifications<\/h2>\r\n <p class=\"desc\">Steel pipes are manufactured under various international standards based on application and material requirements.<\/p>\r\n <div class=\"table-container\">\r\n <table class=\"data-table\">\r\n <thead><tr><th>Standard<\/th><th>Material<\/th><th>Size Range<\/th><th>Application<\/th><\/tr><\/thead>\r\n <tbody>\r\n <tr><td>ASTM A53<\/td><td>Carbon Steel (Welded\/Seamless)<\/td><td>NPS 1\/8\" \u2013 26\"<\/td><td>General mechanical, pressure, steam<\/td><\/tr>\r\n <tr><td>ASTM A106<\/td><td>Carbon Steel (Seamless)<\/td><td>NPS 1\/8\" \u2013 48\"<\/td><td>High-temperature service<\/td><\/tr>\r\n <tr><td>API 5L<\/td><td>Carbon\/Alloy Steel (Welded\/Seamless)<\/td><td>NPS 1\/2\" \u2013 80\"<\/td><td>Oil & gas transmission pipelines<\/td><\/tr>\r\n <tr><td>ASTM A312<\/td><td>Stainless Steel (Seamless\/Welded)<\/td><td>NPS 1\/8\" \u2013 30\"<\/td><td>Corrosive service, chemical plants<\/td><\/tr>\r\n <tr><td>ASTM A333<\/td><td>Carbon\/Alloy Steel (Seamless\/Welded)<\/td><td>NPS 1\/8\" \u2013 36\"<\/td><td>Low-temperature service (down to -195\u00b0C)<\/td><\/tr>\r\n <tr><td>ASTM A335<\/td><td>Alloy Steel (Seamless)<\/td><td>NPS 1\/8\" \u2013 48\"<\/td><td>High-temperature service (power plants)<\/td><\/tr>\r\n <\/tbody>\r\n <\/table>\r\n <\/div>\r\n <h3>ASME B36.10 vs B36.19<\/h3>\r\n <p>ASME B36.10 covers carbon and alloy steel pipe dimensions. ASME B36.19 covers stainless steel pipe dimensions. Both standards use the same outside diameters for a given NPS, ensuring compatibility with the same flanges, fittings, and supports.<\/p>\r\n <\/section>\r\n\r\n \r\n <section class=\"card\">\r\n <h2>Frequently Asked Questions<\/h2>\r\n\r\n <div class=\"faq open\">\r\n <div class=\"faq-question\" onclick=\"toggleFAQ(this)\">What is the difference between NPS and DN?<\/div>\r\n <div class=\"faq-answer\">NPS (Nominal Pipe Size) is the North American designation in inches. DN (Diameter Nominal) is the metric equivalent in millimeters. Both are dimensionless labels; neither equals the actual outside diameter for sizes below NPS 14\/DN 350. For example, NPS 2 and DN 50 both refer to the same pipe with an OD of 60.3 mm.<\/div>\r\n <\/div>\r\n <div class=\"faq\">\r\n <div class=\"faq-question\" onclick=\"toggleFAQ(this)\">What does \"Schedule\" (Sch) mean?<\/div>\r\n <div class=\"faq-answer\">Pipe schedule (Sch) indicates wall thickness. Higher schedule numbers indicate thicker walls and higher pressure ratings. Common schedules: Sch 40 (standard weight), Sch 80 (extra strong), Sch 160 (double extra strong), and XXS. For NPS 1\/8\" to 10\", STD equals Sch 40 and XS equals Sch 80.<\/div>\r\n <\/div>\r\n <div class=\"faq\">\r\n <div class=\"faq-question\" onclick=\"toggleFAQ(this)\">Why doesn't NPS equal the actual outside diameter?<\/div>\r\n <div class=\"faq-answer\">Historically, pipe sizes were named based on approximate inside diameter (bore). When manufacturing techniques improved and wall thicknesses were standardized, the OD was fixed while the ID varied with wall thickness. The name (NPS) remained but no longer matches the actual measurement. From NPS 14 and above, NPS equals the actual OD in inches.<\/div>\r\n <\/div>\r\n <div class=\"faq\">\r\n <div class=\"faq-question\" onclick=\"toggleFAQ(this)\">What is the OD of a 2-inch steel pipe?<\/div>\r\n <div class=\"faq-answer\">The outside diameter of NPS 2 pipe is 2.375 inches (60.3 mm). This OD is constant regardless of schedule (wall thickness). Only the inside diameter (ID) changes with different wall thicknesses.<\/div>\r\n <\/div>\r\n <div class=\"faq\">\r\n <div class=\"faq-question\" onclick=\"toggleFAQ(this)\">What is the difference between Sch 40 and Sch 80?<\/div>\r\n <div class=\"faq-answer\">Sch 80 has a thicker wall than Sch 40 for the same NPS. For example, NPS 2 Sch 40 has a wall thickness of 3.91 mm (weight 5.44 kg\/m), while Sch 80 has 5.54 mm (weight 7.48 kg\/m). The OD remains 60.3 mm; the ID decreases from 52.5 mm to 49.2 mm.<\/div>\r\n <\/div>\r\n <div class=\"faq\">\r\n <div class=\"faq-question\" onclick=\"toggleFAQ(this)\">How is steel pipe weight calculated?<\/div>\r\n <div class=\"faq-answer\">Weight per meter (kg\/m) = (OD - WT) \u00d7 WT \u00d7 0.02466, where OD and WT are in millimeters. The constant 0.02466 is derived from steel density (7,850 kg\/m\u00b3) \u00d7 \u03c0 \/ 1000. For stainless steel (7,930 kg\/m\u00b3), use 0.02491.<\/div>\r\n <\/div>\r\n <\/section>\r\n <\/main>\r\n\r\n \r\n <aside class=\"right-sidebar\">\r\n\r\n <div class=\"sidebar-card\">\r\n <h3>Quick Reference<\/h3>\r\n <ul class=\"quick-ref\">\r\n <li><span>NPS 1\/2 OD<\/span><span class=\"value\">21.3 mm<\/span><\/li>\r\n <li><span>NPS 1 OD<\/span><span class=\"value\">33.4 mm<\/span><\/li>\r\n <li><span>NPS 2 OD<\/span><span class=\"value\">60.3 mm<\/span><\/li>\r\n <li><span>NPS 4 OD<\/span><span class=\"value\">114.3 mm<\/span><\/li>\r\n <li><span>NPS 6 OD<\/span><span class=\"value\">168.3 mm<\/span><\/li>\r\n <li><span>NPS 8 OD<\/span><span class=\"value\">219.1 mm<\/span><\/li>\r\n <li><span>NPS 10 OD<\/span><span class=\"value\">273.1 mm<\/span><\/li>\r\n <li><span>NPS 12 OD<\/span><span class=\"value\">323.9 mm<\/span><\/li>\r\n <\/ul>\r\n <\/div>\r\n\r\n <div class=\"sidebar-card\">\r\n <h3>Common Schedules<\/h3>\r\n <ul class=\"quick-ref\">\r\n <li><span>Sch 5S \/ 10S<\/span><span class=\"value\">Stainless only<\/span><\/li>\r\n <li><span>Sch 10<\/span><span class=\"value\">Light wall<\/span><\/li>\r\n <li><span>Sch 20<\/span><span class=\"value\">Light wall<\/span><\/li>\r\n <li><span>Sch 40 \/ STD<\/span><span class=\"value\">Standard weight<\/span><\/li>\r\n <li><span>Sch 80 \/ XS<\/span><span class=\"value\">Extra strong<\/span><\/li>\r\n <li><span>Sch 160<\/span><span class=\"value\">Heavy wall<\/span><\/li>\r\n <li><span>XXS<\/span><span class=\"value\">Double extra strong<\/span><\/li>\r\n <\/ul>\r\n <\/div>\r\n\r\n <div class=\"sidebar-card\">\r\n <h3>Weight Formula<\/h3>\r\n <ul class=\"quick-ref\">\r\n <li><span>Carbon Steel<\/span><span class=\"value\">\u00d70.02466<\/span><\/li>\r\n <li><span>SS 304\/316<\/span><span class=\"value\">\u00d70.02491<\/span><\/li>\r\n <li><span>Aluminum<\/span><span class=\"value\">\u00d70.00852<\/span><\/li>\r\n <li><span>Copper<\/span><span class=\"value\">\u00d70.02813<\/span><\/li>\r\n <li><span>Formula<\/span><span class=\"value\">(OD-WT)\u00d7WT\u00d7K<\/span><\/li>\r\n <\/ul>\r\n <p style=\"font-size:9px;color:#aaa;margin-top:4px;\">OD and WT in mm<\/p>\r\n <\/div>\r\n\r\n <div class=\"sidebar-card\">\r\n <h3>Important Note<\/h3>\r\n <div class=\"tip-box\">\r\n <strong>Pipe Sizes Are Nominal<\/strong>\r\n For sizes below NPS 14, the NPS\/DN label does not equal the actual OD. Always use the tabulated OD values from ASME B36.10\/B36.19 for calculations and procurement.\r\n <\/div>\r\n <\/div>\r\n <\/aside>\r\n <\/div>\r\n <\/div>\r\n<\/div>\r\n\r\n<script>\r\n function toggleFAQ(el) {\r\n el.parentElement.classList.toggle('open');\r\n }\r\n\r\n function filterScheduleTable() {\r\n const input = document.getElementById('scheduleFilterInput');\r\n const filterText = input.value.trim().toUpperCase();\r\n const tbody = document.querySelector('#table-schedule tbody');\r\n if (!tbody) return;\r\n\r\n const rows = tbody.querySelectorAll('tr');\r\n let visibleRows = 0;\r\n\r\n rows.forEach(row => {\r\n const rowText = row.textContent.toUpperCase();\r\n if (filterText === '' || rowText.includes(filterText)) {\r\n row.style.display = '';\r\n visibleRows++;\r\n } else {\r\n row.style.display = 'none';\r\n }\r\n });\r\n\r\n const stats = document.getElementById('scheduleFilterStats');\r\n if (filterText === '') {\r\n stats.textContent = `Showing all (${rows.length} 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clearScheduleFilter;\r\n<\/script>\r\n<\/body>\r\n<\/html>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Steel Pipe Sizes Chart | ASME B36.10 & B36.19 | Baowu Steel Steel Pipe Sizes Chart Complete dimensional reference: NPS, 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