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Nominal Pipe Size - Wikipedia
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class="vector-toc-numb">2</span> <span>Blockage or ball test</span> </div> </a> <ul id="toc-Blockage_or_ball_test-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-NPS_tables_for_selected_sizes" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#NPS_tables_for_selected_sizes"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>NPS tables for selected sizes</span> </div> </a> <button aria-controls="toc-NPS_tables_for_selected_sizes-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Toggle NPS tables for selected sizes subsection</span> </button> <ul id="toc-NPS_tables_for_selected_sizes-sublist" class="vector-toc-list"> <li id="toc-NPS_1⁄8_to_NPS_3+1⁄2" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#NPS_1⁄8_to_NPS_3+1⁄2"> <div class="vector-toc-text"> <span class="vector-toc-numb">3.1</span> <span>NPS <span><span>1</span>⁄<span>8</span></span> to NPS <span>3<span>+</span><span>1</span>⁄<span>2</span></span></span> </div> </a> <ul id="toc-NPS_1⁄8_to_NPS_3+1⁄2-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-NPS_4_to_NPS_9" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#NPS_4_to_NPS_9"> <div class="vector-toc-text"> <span class="vector-toc-numb">3.2</span> <span>NPS 4 to NPS 9</span> </div> </a> <ul id="toc-NPS_4_to_NPS_9-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-NPS_10_to_NPS_24" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#NPS_10_to_NPS_24"> <div class="vector-toc-text"> <span class="vector-toc-numb">3.3</span> <span>NPS 10 to NPS 24</span> </div> </a> <ul id="toc-NPS_10_to_NPS_24-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-NPS_26_to_NPS_36" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#NPS_26_to_NPS_36"> <div class="vector-toc-text"> <span class="vector-toc-numb">3.4</span> <span>NPS 26 to NPS 36</span> </div> </a> <ul id="toc-NPS_26_to_NPS_36-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Additional_sizes_(NPS)" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Additional_sizes_(NPS)"> <div class="vector-toc-text"> <span class="vector-toc-numb">3.5</span> <span>Additional sizes (NPS)</span> </div> </a> <ul id="toc-Additional_sizes_(NPS)-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-See_also" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#See_also"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>See also</span> </div> </a> <ul id="toc-See_also-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Notes" class="vector-toc-list-item vector-toc-level-1 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class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">North American set of standard sizes for pipes</div> <style data-mw-deduplicate="TemplateStyles:r1236090951">.mw-parser-output .hatnote{font-style:italic}.mw-parser-output div.hatnote{padding-left:1.6em;margin-bottom:0.5em}.mw-parser-output .hatnote i{font-style:normal}.mw-parser-output .hatnote+link+.hatnote{margin-top:-0.5em}@media print{body.ns-0 .mw-parser-output .hatnote{display:none!important}}</style><div role="note" class="hatnote navigation-not-searchable">This article is about the U.S. standard for pipe <i>sizes</i>, abbreviated NPS. For the U.S. standard for the <i>straight thread form</i> on pipe (also abbreviated NPS), see <a href="/wiki/National_Pipe_Thread" class="mw-redirect" title="National Pipe Thread">National Pipe Thread</a>.</div> <p><b>Nominal Pipe Size</b> (<b>NPS</b>) is a North American set of standard sizes for pipes used for high or low pressures and temperatures.<sup id="cite_ref-FOOTNOTEASME_B36.101_1-0" class="reference"><a href="#cite_note-FOOTNOTEASME_B36.101-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> "Nominal" refers to pipe in non-specific terms and identifies the diameter of the hole with a non-dimensional number (for example – 2-inch nominal steel pipe" consists of many varieties of steel pipe with the only criterion being a 2.375-inch (60.3 mm) outside diameter). Specific pipe is identified by pipe diameter and another non-dimensional number for wall thickness referred to as the Schedule (Sched. or Sch., for example – "2-inch diameter pipe, Schedule 40"). NPS is often incorrectly called National Pipe Size, due to confusion with the American standard for pipe threads, "<a href="/wiki/National_pipe_thread" title="National pipe thread">national pipe straight</a>", which also abbreviates as "NPS". The European and international designation equivalent to NPS is <i>DN</i> (<i>diamètre nominal</i>/nominal diameter/Nennweite), in which sizes are measured in millimetres, see <a href="/wiki/Preferred_metric_sizes#ISO_6708" title="Preferred metric sizes">ISO 6708</a>.<sup id="cite_ref-DN_2-0" class="reference"><a href="#cite_note-DN-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> The term <b>NB</b> (<b>nominal bore</b>) is also frequently used interchangeably with DN. </p><p>In March 1927 the <a href="/wiki/American_National_Standards_Institute" title="American National Standards Institute">American Standards Association</a> authorized a committee to standardize the dimensions of wrought steel and <a href="/wiki/Wrought_iron" title="Wrought iron">wrought iron</a> pipe and tubing. At that time only a small selection of wall thicknesses were in use: standard weight (STD), extra-strong (XS), and double extra-strong (XXS), based on the <a href="/wiki/Iron_pipe_size" title="Iron pipe size">iron pipe size (IPS)</a> system of the day. However these three sizes did not fit all applications. Also, in 1939, it was hoped that the designations of STD, XS, and XXS would be phased out by schedule numbers, however those original terms are still in common use today (although sometimes referred to as <i>standard, extra-heavy (XH), </i>and<i> double extra-heavy (XXH)</i>, respectively). Since the original schedules were created, there have been many revisions and additions to the tables of pipe sizes based on industry use and on standards from <a href="/wiki/American_Petroleum_Institute" title="American Petroleum Institute">API</a>, <a href="/wiki/ASTM_International" title="ASTM International">ASTM</a>, and others.<sup id="cite_ref-FOOTNOTEASME_B36.10iv_3-0" class="reference"><a href="#cite_note-FOOTNOTEASME_B36.10iv-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> </p><p>Stainless steel pipes, which were coming into more common use in the mid 20th century, permitted the use of thinner pipe walls with much less risk of failure due to corrosion. By 1949 thinner schedules 5S and 10S, which were based on the pressure requirements modified to the nearest <a href="/wiki/Stubs_Iron_Wire_Gauge" class="mw-redirect" title="Stubs Iron Wire Gauge">BWG</a> number, had been created, and other "S" sizes followed later. Due to their thin walls, the smaller "S" sizes can not be threaded together according to ASME code,<sup id="cite_ref-FOOTNOTEASME_B36.19iv_4-0" class="reference"><a href="#cite_note-FOOTNOTEASME_B36.19iv-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> but must be <a href="/wiki/Fusion_welding" title="Fusion welding">fusion welded</a>, brazed, roll grooved, or joined with press fittings. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Application">Application</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Nominal_Pipe_Size&action=edit&section=1" title="Edit section: Application"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Based on the NPS and schedule of a pipe,<sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> the pipe outside diameter (OD) and wall thickness can be obtained from reference tables such as those below, which are based on ASME standards B36.10M and B36.19M. For example, NPS 14 Sch 40 has an OD of 14 inches (360 mm) and a wall thickness of 0.437 inches (11.1 mm). However, the NPS and OD values are not always equal, which can create confusion. </p> <ul><li>For NPS <style data-mw-deduplicate="TemplateStyles:r1154941027">.mw-parser-output .frac{white-space:nowrap}.mw-parser-output .frac .num,.mw-parser-output .frac .den{font-size:80%;line-height:0;vertical-align:super}.mw-parser-output .frac .den{vertical-align:sub}.mw-parser-output .sr-only{border:0;clip:rect(0,0,0,0);clip-path:polygon(0px 0px,0px 0px,0px 0px);height:1px;margin:-1px;overflow:hidden;padding:0;position:absolute;width:1px}</style><span class="frac"><span class="num">1</span>⁄<span class="den">8</span></span> to 12, the NPS and OD values are different. For example, the OD of an NPS 12 pipe is actually 12.75 inches (324 mm). To find the actual OD for each NPS value, refer to the tables below. (Note that for <a href="/wiki/Tubing_(material)" class="mw-redirect" title="Tubing (material)">tubing</a>, the size indicates actual dimensions, not nominal.)</li> <li>For NPS 14 and up, the NPS and OD values are equal. In other words, an NPS 14 pipe is actually 14 inches (360 mm) OD.</li></ul> <p>The reason for the discrepancy for NPS <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027"><span class="frac"><span class="num">1</span>⁄<span class="den">8</span></span> to 12 inches is that these NPS values were originally set to give the same <i>inside</i> diameter (ID) based on wall thicknesses standard at the time. However, as the set of available wall thicknesses evolved, the ID changed and NPS became only indirectly related to ID and OD. </p><p>For a given NPS, the OD stays fixed and the wall thickness increases with schedule. For a given schedule, the OD increases with NPS while the wall thickness stays constant or increases. Using equations and rules in ASME B31.3 Process Piping, it can be shown that pressure rating decreases with increasing NPS and constant schedule.<sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>a<span class="cite-bracket">]</span></a></sup> </p><p>Some specifications use pipe schedules called standard wall (STD), extra strong (XS), and double extra strong (XXS), although these actually belong to an older system called iron pipe size (IPS). The IPS number is the same as the NPS number. STD is identical to SCH 40S, and 40S is identical to 40 for NPS <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027"><span class="frac"><span class="num">1</span>⁄<span class="den">8</span></span> to NPS 10, inclusive. XS is identical to SCH 80S, and 80S is identical to 80 for NPS <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027"><span class="frac"><span class="num">1</span>⁄<span class="den">8</span></span> to NPS 8, inclusive. XXS wall is thicker than schedule 160 from NPS <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027"><span class="frac"><span class="num">1</span>⁄<span class="den">8</span></span> in to NPS 6 in inclusive, and schedule 160 is thicker than XXS wall for NPS 8 in and larger. </p> <div class="mw-heading mw-heading2"><h2 id="Blockage_or_ball_test">Blockage or ball test</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Nominal_Pipe_Size&action=edit&section=2" title="Edit section: Blockage or ball test"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>When a pipe is welded or bent the most common method to inspect blockages, misalignment, ovality, and weld bead dimensional conformity is to pass a round ball through the pipe coil or circuit. If the inner pipe dimension is to be measured then the weld bead should be subtracted, if welding is applicable. Typically, the clearance tolerance for the ball must not exceed 1 millimetre (0.039 in). Allowable ovality of any pipe is measured on the inside dimension of the pipe, normally 5% to 10% ovality can be accepted. If no other test is conducted to verify ovality, or blockages, this test must be seen as a <b>standard requirement</b>. A flow test can not be used in lieu of a blockage or ball test. See pipe dimensional table, Specification ASME B36.10M or B36.19M for pipe dimensions per schedule. </p><p>Stainless steel pipe is most often available in standard weight sizes (noted by the <i>S</i> designation; for example, <i>NPS Sch 10S</i>). However stainless steel pipe can also be available in other schedules. </p><p>Both <a href="/wiki/Polyvinyl_chloride" title="Polyvinyl chloride">polyvinyl chloride</a> pipe (PVC) and <a href="/wiki/Chlorinated_polyvinyl_chloride" title="Chlorinated polyvinyl chloride">chlorinated polyvinyl chloride</a> pipe (CPVC) are made in NPS sizes. </p> <div class="mw-heading mw-heading2"><h2 id="NPS_tables_for_selected_sizes">NPS tables for selected sizes</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Nominal_Pipe_Size&action=edit&section=3" title="Edit section: NPS tables for selected sizes"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-heading mw-heading3"><h3 id="NPS_1⁄8_to_NPS_3+1⁄2"><span id="NPS_1.E2.81.848_to_NPS_3.2B1.E2.81.842"></span>NPS <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027"><span class="frac"><span class="num">1</span>⁄<span class="den">8</span></span> to NPS <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027"><span class="frac">3<span class="sr-only">+</span><span class="num">1</span>⁄<span class="den">2</span></span></h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Nominal_Pipe_Size&action=edit&section=4" title="Edit section: NPS 1⁄8 to NPS 3+1⁄2"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>DN does not exactly correspond to a size in millimeters, because ISO 6708 defines it as being a dimensionless specification only indirectly related to a diameter. The ISO 6708 sizes provide a metric name for existing inch sizes, resulting in a 1:1 correlation between NPS and DN sizes. ISO 6708 does not include values for "DN 6" or "DN 8", however ASME B36.10M list the "DN 6" and "DN 8" . Also, the European Standard <a rel="nofollow" class="external text" href="https://www.techstreet.com/standards/din-en-12516-1?product_id=2027332">EN 12 516-1</a> (Industrial valves - Shell design strength - Part 1: Tabulation method for steel valve shells) specifies the dimensions "DN 6" and "DN 8", respectively their equivalents NPS <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027"><span class="frac"><span class="num">1</span>⁄<span class="den">8</span></span> "and NPS <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027"><span class="frac"><span class="num">1</span>⁄<span class="den">4</span></span>". </p> <table class="wikitable"> <tbody><tr> <th rowspan="2">NPS<sup id="cite_ref-table_8-0" class="reference"><a href="#cite_note-table-8"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> </th> <th rowspan="2">DN <p>(dimensionless) </p> </th> <th rowspan="2">OD<br />[in (mm)] </th> <th colspan="8">Wall thickness [in (mm)] </th></tr> <tr> <th>Sch. 5s </th> <th>Sch. 10s/10 </th> <th>Sch. 30 </th> <th>Sch. 40s/40<br />/STD </th> <th>Sch. 80s/80<br />/XS </th> <th>Sch. 120 </th> <th>Sch. 160 </th> <th>XXS </th></tr> <tr> <th><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027"><span class="frac"><span class="num">1</span>⁄<span class="den">8</span></span> </th> <th>6 </th> <td>0.405 (10.29)<sup id="cite_ref-9" class="reference"><a href="#cite_note-9"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> </td> <td>0.035 (0.889) </td> <td>0.049 (1.245) </td> <td>0.057 (1.448) </td> <td>0.068 (1.727) </td> <td>0.095 (2.413) </td> <td>— </td> <td>— </td> <td>— </td></tr> <tr> <th><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027"><span class="frac"><span class="num">1</span>⁄<span class="den">4</span></span> </th> <th>8 </th> <td>0.540 (13.72) </td> <td>0.049 (1.245) </td> <td>0.065 (1.651) </td> <td>0.073 (1.854) </td> <td>0.088 (2.235) </td> <td>0.119 (3.023) </td> <td>— </td> <td>— </td> <td>— </td></tr> <tr> <th><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027"><span class="frac"><span class="num">3</span>⁄<span class="den">8</span></span> </th> <th>10 </th> <td>0.675 (17.15) </td> <td>0.049 (1.245) </td> <td>0.065 (1.651) </td> <td>0.073 (1.854) </td> <td>0.091 (2.311) </td> <td>0.126 (3.200) </td> <td>— </td> <td>— </td> <td>— </td></tr> <tr> <th><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027"><span class="frac"><span class="num">1</span>⁄<span class="den">2</span></span> </th> <th>15 </th> <td>0.840 (21.34) </td> <td>0.065 (1.651) </td> <td>0.083 (2.108) </td> <td>0.095 (2.413) </td> <td>0.109 (2.769) </td> <td>0.147 (3.734) </td> <td>— </td> <td>0.188 (4.775) </td> <td>0.294 (7.468) </td></tr> <tr> <th><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027"><span class="frac"><span class="num">3</span>⁄<span class="den">4</span></span> </th> <th>20 </th> <td>1.050 (26.67) </td> <td>0.065 (1.651) </td> <td>0.083 (2.108) </td> <td>0.095 (2.413) </td> <td>0.113 (2.870) </td> <td>0.154 (3.912) </td> <td>— </td> <td>0.219 (5.563) </td> <td>0.308 (7.823) </td></tr> <tr> <th>1 </th> <th>25 </th> <td>1.315 (33.40) </td> <td>0.065 (1.651) </td> <td>0.109 (2.769) </td> <td>0.114 (2.896) </td> <td>0.133 (3.378) </td> <td>0.179 (4.547) </td> <td>— </td> <td>0.250 (6.350) </td> <td>0.358 (9.093) </td></tr> <tr> <th><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027"><span class="frac">1<span class="sr-only">+</span><span class="num">1</span>⁄<span class="den">4</span></span> </th> <th>32 </th> <td>1.660 (42.16) </td> <td>0.065 (1.651) </td> <td>0.109 (2.769) </td> <td>0.117 (2.972) </td> <td>0.140 (3.556) </td> <td>0.191 (4.851) </td> <td>— </td> <td>0.250 (6.350) </td> <td>0.382 (9.703) </td></tr> <tr> <th><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027"><span class="frac">1<span class="sr-only">+</span><span class="num">1</span>⁄<span class="den">2</span></span> </th> <th>40 </th> <td>1.900 (48.26) </td> <td>0.065 (1.651) </td> <td>0.109 (2.769) </td> <td>0.125 (3.175) </td> <td>0.145 (3.683) </td> <td>0.200 (5.080) </td> <td>— </td> <td>0.281 (7.137) </td> <td>0.400 (10.160) </td></tr> <tr> <th>2 </th> <th>50 </th> <td>2.375 (60.33) </td> <td>0.065 (1.651) </td> <td>0.109 (2.769) </td> <td>0.125 (3.175) </td> <td>0.154 (3.912) </td> <td>0.218 (5.537) </td> <td>— </td> <td>0.344 (8.738) </td> <td>0.436 (11.074) </td></tr> <tr> <th><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027"><span class="frac">2<span class="sr-only">+</span><span class="num">1</span>⁄<span class="den">2</span></span> </th> <th>65 </th> <td>2.875 (73.03) </td> <td>0.083 (2.108) </td> <td>0.120 (3.048) </td> <td>0.188 (4.775) </td> <td>0.203 (5.156) </td> <td>0.276 (7.010) </td> <td>0.300 (7.620) </td> <td>0.375 (9.525) </td> <td>0.552 (14.021) </td></tr> <tr> <th>3 </th> <th>80 </th> <td>3.500 (88.90) </td> <td>0.083 (2.108) </td> <td>0.120 (3.048) </td> <td>0.188 (4.775) </td> <td>0.216 (5.486) </td> <td>0.300 (7.620) </td> <td>0.350 (8.890) </td> <td>0.438 (11.125) </td> <td>0.600 (15.240) </td></tr> <tr> <th><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027"><span class="frac">3<span class="sr-only">+</span><span class="num">1</span>⁄<span class="den">2</span></span> </th> <th>90 </th> <td>4.000 (101.60) </td> <td>0.083 (2.108) </td> <td>0.120 (3.048) </td> <td>0.188 (4.775) </td> <td>0.226 (5.740) </td> <td>0.318 (8.077) </td> <td>— </td> <td>— </td> <td>0.636 (16.154) </td></tr></tbody></table> <p>Tolerance: The tolerance on pipe OD is +<link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027"><span class="frac"><span class="num">1</span>⁄<span class="den">64</span></span> (0.0156) inch (<link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027">0.40 mm), −<link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027"><span class="frac"><span class="num">1</span>⁄<span class="den">32</span></span> (0.0312) inch (<link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027">0.79 mm).<sup id="cite_ref-FOOTNOTEA9992014_10-0" class="reference"><a href="#cite_note-FOOTNOTEA9992014-10"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> </p><p>As per <a rel="nofollow" class="external text" href="https://www.asme.org/products/codes-standards/b3610m-2018-welded-seamless-wrought-steel-pipe">ASME B36.10M -2018</a> Pipe wall thickness are rounded to nearest 0.01 mm (0.00039 in), while converting wall thickness from inch to millimetre. </p> <div class="mw-heading mw-heading3"><h3 id="NPS_4_to_NPS_9">NPS 4 to NPS 9</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Nominal_Pipe_Size&action=edit&section=5" title="Edit section: NPS 4 to NPS 9"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <table class="wikitable"> <tbody><tr> <th rowspan="2">NPS<sup id="cite_ref-table_8-1" class="reference"><a href="#cite_note-table-8"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> </th> <th rowspan="2">DN<sup id="cite_ref-DN_2-1" class="reference"><a href="#cite_note-DN-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </th> <th rowspan="2">OD<br />[in (mm)] </th> <th colspan="12">Wall thickness [in (mm)] </th></tr> <tr> <th>Sch. 5s </th> <th>Sch. 10s/10 </th> <th>Sch. 20 </th> <th>Sch. 30 </th> <th>Sch. 40s/40<br />/STD </th> <th>Sch. 60 </th> <th>Sch. 80s/80<br />/XS </th> <th>Sch. 100 </th> <th>Sch. 120 </th> <th>Sch. 140 </th> <th>Sch. 160 </th> <th>XXS<sup id="cite_ref-table_8-2" class="reference"><a href="#cite_note-table-8"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> </th></tr> <tr> <th>4 </th> <th>100 </th> <td>4.500 (114.30) </td> <td>0.083 (2.108) </td> <td>0.120 (3.048) </td> <td>— </td> <td>0.188 (4.775) </td> <td>0.237 (6.020) </td> <td>— </td> <td>0.337 (8.560) </td> <td>— </td> <td>0.437 (11.100) </td> <td>— </td> <td>0.531 (13.487) </td> <td>0.674 (17.120) </td></tr> <tr> <th><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027"><span class="frac">4<span class="sr-only">+</span><span class="num">1</span>⁄<span class="den">2</span></span> </th> <th>115 </th> <td>5.000 (127.00) </td> <td>— </td> <td>— </td> <td>— </td> <td>— </td> <td>0.247 (6.274) </td> <td>— </td> <td>0.355 (9.017) </td> <td>— </td> <td>— </td> <td>— </td> <td>— </td> <td>0.710 (18.034) </td></tr> <tr> <th>5 </th> <th>125 </th> <td>5.563 (141.30) </td> <td>0.109 (2.769) </td> <td>0.134 (3.404) </td> <td>— </td> <td>— </td> <td>0.258 (6.553) </td> <td>— </td> <td>0.375 (9.525) </td> <td>— </td> <td>0.500 (12.700) </td> <td>— </td> <td>0.625 (15.875) </td> <td>0.750 (19.050) </td></tr> <tr> <th>6 </th> <th>150 </th> <td>6.625 (168.28) </td> <td>0.109 (2.769) </td> <td>0.134 (3.404) </td> <td>— </td> <td>— </td> <td>0.280 (7.112) </td> <td>— </td> <td>0.432 (10.973) </td> <td>— </td> <td>0.562 (14.275) </td> <td>— </td> <td>0.719 (18.263) </td> <td>0.864 (21.946) </td></tr> <tr> <th>7 </th> <th>— </th> <td>7.625 (193.68) </td> <td>— </td> <td>— </td> <td>— </td> <td>— </td> <td>0.301 (7.645) </td> <td>— </td> <td>0.500 (12.700) </td> <td>— </td> <td>— </td> <td>— </td> <td>— </td> <td>0.875 (22.225) </td></tr> <tr> <th>8 </th> <th>200 </th> <td>8.625 (219.08) </td> <td>0.109 (2.769) </td> <td>0.148 (3.759) </td> <td>0.250 (6.350) </td> <td>0.277 (7.036) </td> <td>0.322 (8.179) </td> <td>0.406 (10.312) </td> <td>0.500 (12.700) </td> <td>0.593 (15.062) </td> <td>0.719 (18.263) </td> <td>0.812 (20.625) </td> <td>0.906 (23.012) </td> <td>0.875 (22.225) </td></tr> <tr> <th>9 </th> <th>— </th> <td>9.625 (244.48) </td> <td>— </td> <td>— </td> <td>— </td> <td>— </td> <td>0.342 (8.687) </td> <td>— </td> <td>0.500 (12.700) </td> <td>— </td> <td>— </td> <td>— </td> <td>— </td> <td>— </td></tr> </tbody></table> <div class="mw-heading mw-heading3"><h3 id="NPS_10_to_NPS_24">NPS 10 to NPS 24</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Nominal_Pipe_Size&action=edit&section=6" title="Edit section: NPS 10 to NPS 24"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <table class="wikitable"> <tbody><tr> <th rowspan="2">NPS<sup id="cite_ref-table_8-3" class="reference"><a href="#cite_note-table-8"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> </th> <th rowspan="2">DN<sup id="cite_ref-DN_2-2" class="reference"><a href="#cite_note-DN-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </th> <th rowspan="2">OD<br />[in (mm)] </th> <th colspan="6">Wall thickness [in (mm)] </th></tr> <tr> <th>Sch. 5s </th> <th>Sch. 10 </th> <th>Sch. 10s </th> <th>Sch. 20 </th> <th>Sch. 30 </th> <th>Sch. Std./40S </th></tr> <tr> <th>10 </th> <th>250 </th> <td>10.75 (273.05) </td> <td>0.134 (3.404) </td> <td>0.165 (4.191) </td> <td>0.165 (4.191) </td> <td>0.250 (6.350) </td> <td>0.307 (7.798) </td> <td>0.365 (9.271) </td></tr> <tr> <th>12 </th> <th>300 </th> <td>12.75 (323.85) </td> <td>0.156 (3.962) </td> <td>0.180 (4.572) </td> <td>0.180 (4.572) </td> <td>0.250 (6.350) </td> <td>0.330 (8.382) </td> <td>0.375 (9.525) </td></tr> <tr> <th>14 </th> <th>350 </th> <td>14.00 (355.60) </td> <td>0.156 (3.962) </td> <td>0.250 (6.350) </td> <td>0.188 (4.775) </td> <td>0.312 (7.925) </td> <td>0.375 (9.525) </td> <td>0.375 (9.525) </td></tr> <tr> <th>16 </th> <th>400 </th> <td>16.00 (406.40) </td> <td>0.165 (4.191) </td> <td>0.250 (6.350) </td> <td>0.188 (4.775) </td> <td>0.312 (7.925) </td> <td>0.375 (9.525) </td> <td>0.375 (9.525) </td></tr> <tr> <th>18 </th> <th>450 </th> <td>18.00 (457.20) </td> <td>0.165 (4.191) </td> <td>0.250 (6.350) </td> <td>0.188 (4.775) </td> <td>0.312 (7.925) </td> <td>0.437 (11.100) </td> <td>0.375 (9.525) </td></tr> <tr> <th>20 </th> <th>500 </th> <td>20.00 (508.00) </td> <td>0.188 (4.775) </td> <td>0.250 (6.350) </td> <td>0.218 (5.537) </td> <td>0.375 (9.525) </td> <td>0.500 (12.700) </td> <td>0.375 (9.525) </td></tr> <tr> <th>22 </th> <th>550 </th> <td>22.00 (558.80) </td> <td>0.188 (4.775) </td> <td>0.250 (6.350) </td> <td>0.218 (5.537) </td> <td>0.375 (9.525) </td> <td>0.500 (12.700) </td> <td>0.375 (9.525) </td></tr> <tr> <th>24 </th> <th>600 </th> <td>24.00 (609.60) </td> <td>0.218 (5.537) </td> <td>0.250 (6.350) </td> <td>0.250 (6.350) </td> <td>0.375 (9.525) </td> <td>0.562 (14.275) </td> <td>0.375 (9.525) </td></tr></tbody></table> <table class="wikitable"> <tbody><tr> <th rowspan="2">NPS<sup id="cite_ref-table_8-4" class="reference"><a href="#cite_note-table-8"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> </th> <th rowspan="2">DN<sup id="cite_ref-DN_2-3" class="reference"><a href="#cite_note-DN-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </th> <th colspan="8">Wall thickness [in (mm)] </th></tr> <tr> <th>Sch. 40 </th> <th>Sch. 60 </th> <th>Sch. 80s/XS </th> <th>Sch. 80 </th> <th>Sch. 100 </th> <th>Sch. 120 </th> <th>Sch. 140 </th> <th>Sch. 160 </th></tr> <tr> <th>10 </th> <th>250 </th> <td>0.365 (9.271) </td> <td>0.500 (12.700) </td> <td>0.500 (12.700) </td> <td>0.594 (15.088) </td> <td>0.718 (18.237) </td> <td>0.843 (21.412) </td> <td>1.000 (25.400) </td> <td>1.125 (28.575) </td></tr> <tr> <th>12 </th> <th>300 </th> <td>0.406 (10.312) </td> <td>0.562 (14.275) </td> <td>0.500 (12.700) </td> <td>0.687 (17.450) </td> <td>0.843 (21.412) </td> <td>1.000 (25.400) </td> <td>1.125 (28.575) </td> <td>1.312 (33.325) </td></tr> <tr> <th>14 </th> <th>350 </th> <td>0.437 (11.100) </td> <td>0.593 (15.062) </td> <td>0.500 (12.700) </td> <td>0.750 (19.050) </td> <td>0.937 (23.800) </td> <td>1.093 (27.762) </td> <td>1.250 (31.750) </td> <td>1.406 (35.712) </td></tr> <tr> <th>16 </th> <th>400 </th> <td>0.500 (12.700) </td> <td>0.656 (16.662) </td> <td>0.500 (12.700) </td> <td>0.843 (21.412) </td> <td>1.031 (26.187) </td> <td>1.218 (30.937) </td> <td>1.437 (36.500) </td> <td>1.594 (40.488) </td></tr> <tr> <th>18 </th> <th>450 </th> <td>0.562 (14.275) </td> <td>0.750 (19.050) </td> <td>0.500 (12.700) </td> <td>0.937 (23.800) </td> <td>1.156 (29.362) </td> <td>1.375 (34.925) </td> <td>1.562 (39.675) </td> <td>1.781 (45.237) </td></tr> <tr> <th>20 </th> <th>500 </th> <td>0.593 (15.062) </td> <td>0.812 (20.625) </td> <td>0.500 (12.700) </td> <td>1.031 (26.187) </td> <td>1.280 (32.512) </td> <td>1.500 (38.100) </td> <td>1.750 (44.450) </td> <td>1.968 (49.987) </td></tr> <tr> <th>22 </th> <th>550 </th> <td>— </td> <td>0.875 (22.225) </td> <td>0.500 (12.700) </td> <td>1.125 (28.575) </td> <td>1.375 (34.925) </td> <td>1.625 (41.275) </td> <td>1.875 (47.625) </td> <td>2.125 (53.975) </td></tr> <tr> <th>24 </th> <th>600 </th> <td>0.687 (17.450) </td> <td>0.968 (24.587) </td> <td>0.500 (12.700) </td> <td>1.218 (30.937) </td> <td>1.531 (38.887) </td> <td>1.812 (46.025) </td> <td>2.062 (52.375) </td> <td>2.343 (59.512) </td></tr></tbody></table> <div class="mw-heading mw-heading3"><h3 id="NPS_26_to_NPS_36">NPS 26 to NPS 36</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Nominal_Pipe_Size&action=edit&section=7" title="Edit section: NPS 26 to NPS 36"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <table class="wikitable"> <tbody><tr> <th rowspan="2">NPS<sup id="cite_ref-table_8-5" class="reference"><a href="#cite_note-table-8"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> </th> <th rowspan="2">DN<sup id="cite_ref-DN_2-4" class="reference"><a href="#cite_note-DN-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </th> <th rowspan="2">OD<br />[in (mm)] </th> <th colspan="8">Wall thickness [in (mm)] </th></tr> <tr> <th>Sch. 5S </th> <th>Sch. 10S </th> <th>Sch. 10 </th> <th>Sch. 20/XS </th> <th>Sch. 30 </th> <th>Sch. 40s/Std. </th> <th>Sch. 40 </th></tr> <tr> <th>26 </th> <th>650 </th> <td>26.000 (660.400) </td> <td>— </td> <td>— </td> <td>0.312 (7.925) </td> <td>0.500 (12.700) </td> <td>— </td> <td>0.375 (9.525) </td> <td>— </td></tr> <tr> <th>28 </th> <th>700 </th> <td>28.000 (711.200) </td> <td>— </td> <td>? </td> <td>0.312 (7.925) </td> <td>0.500 (12.700) </td> <td>0.625 (15.875) </td> <td>0.375 (9.525) </td> <td>— </td></tr> <tr> <th>30 </th> <th>750 </th> <td>30.000 (762.000) </td> <td>0.250 (6.350) </td> <td>0.312 (7.925) </td> <td>0.312 (7.925) </td> <td>0.500 (12.700) </td> <td>0.625 (15.875) </td> <td>0.375 (9.525) </td> <td>— </td></tr> <tr> <th>32 </th> <th>800 </th> <td>32.000 (812.800) </td> <td>— </td> <td>— </td> <td>0.312 (7.925) </td> <td>0.500 (12.700) </td> <td>0.625 (15.875) </td> <td>0.375 (9.525) </td> <td>0.688 (17.475) </td></tr> <tr> <th>34 </th> <th>850 </th> <td>34.000 (863.600) </td> <td>— </td> <td>— </td> <td>0.312 (7.925) </td> <td>0.500 (12.700) </td> <td>0.625 (15.875) </td> <td>0.375 (9.525) </td> <td>0.688 (17.475) </td></tr> <tr> <th>36 </th> <th>900 </th> <td>36.000 (914.400) </td> <td>— </td> <td>— </td> <td>0.312 (7.925) </td> <td>0.500 (12.700) </td> <td>0.625 (15.875) </td> <td>0.375 (9.525) </td> <td>0.75 (19.05) </td></tr> </tbody></table> <div class="mw-heading mw-heading3"><h3 id="Additional_sizes_(NPS)"><span id="Additional_sizes_.28NPS.29"></span>Additional sizes (NPS)</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Nominal_Pipe_Size&action=edit&section=8" title="Edit section: Additional sizes (NPS)"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <table class="wikitable"> <tbody><tr> <th rowspan="3">NPS </th></tr> <tr> <th rowspan="2">DN<sup id="cite_ref-DN_2-5" class="reference"><a href="#cite_note-DN-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </th> <th rowspan="2">OD<br />[in (mm)] </th> <th colspan="3">Wall thickness<br />[in (mm)] </th></tr> <tr> <th>Std. Wt. </th> <th>Sch. XS </th> <th>Sch. XXS </th></tr> <tr> <th>40 </th> <th>1000 </th> <td>40.000 (1,016.000) </td> <td>0.375 (9.525) </td> <td>0.500 (12.700) </td> <td>1.000 (25.400) </td></tr> <tr> <th>42 </th> <th>1050 </th> <td>42.000 (1,066.800) </td> <td>0.375 (9.525) </td> <td>0.500 (12.700) </td> <td>1.000 (25.400) </td></tr> <tr> <th>44 </th> <th>1100 </th> <td>44.000 (1,117.600) </td> <td>0.375 (9.525) </td> <td>0.500 (12.700) </td> <td>1.000 (25.400) </td></tr> <tr> <th>46 </th> <th>1150 </th> <td>46.000 (1,168.400) </td> <td>0.375 (9.525) </td> <td>0.500 (12.700) </td> <td>1.000 (25.400) </td></tr> <tr> <th>48 </th> <th>1200 </th> <td>48.000 (1,219.200) </td> <td>0.375 (9.525) </td> <td>0.500 (12.700) </td> <td>1.000 (25.400) </td></tr> <tr> <th>52 </th> <th>1300 </th> <td>52.000 (1,320.800) </td> <td>0.375 (9.525) </td> <td>0.500 (12.700) </td> <td>1.000 (25.400) </td></tr> <tr> <th>56 </th> <th>1400 </th> <td>56.000 (1,422.400) </td> <td>0.375 (9.525) </td> <td>0.500 (12.700) </td> <td>1.000 (25.400) </td></tr> <tr> <th>60 </th> <th>1500 </th> <td>60.000 (1,524.000) </td> <td>0.375 (9.525) </td> <td>0.500 (12.700) </td> <td>1.000 (25.400) </td></tr> <tr> <th>64 </th> <th>1600 </th> <td>64.000 (1,625.600) </td> <td>0.375 (9.525) </td> <td>0.500 (12.700) </td> <td>1.000 (25.400) </td></tr> <tr> <th>68 </th> <th>1700 </th> <td>68.000 (1,727.200) </td> <td>0.375 (9.525) </td> <td>0.500 (12.700) </td> <td>1.000 (25.400) </td></tr> <tr> <th>72 </th> <th>1800 </th> <td>72.000 (1,828.800) </td> <td>0.375 (9.525) </td> <td>0.500 (12.700) </td> <td>1.000 (25.400) </td></tr> <tr> <th>76 </th> <th>1900 </th> <td>76.000 (1,930.400) </td> <td> </td> <td> </td> <td> </td></tr> <tr> <th>80 </th> <th>2000 </th> <td>80.000 (2,032.000) </td> <td> </td> <td> </td> <td> </td></tr> <tr> <th>88 </th> <th>2200 </th> <td>88.000 (2,235.200) </td> <td> </td> <td> </td> <td> </td></tr> <tr> <th>92 </th> <th>2300 </th> <td>92.000 (2,336.800) </td> <td> </td> <td> </td> <td> </td></tr> <tr> <th>96 </th> <th>2400 </th> <td>96.000 (2,438.400) </td> <td> </td> <td> </td> <td> </td></tr> <tr> <th>100 </th> <th>2500 </th> <td>100.000 (2,540.000) </td> <td> </td> <td> </td> <td> </td></tr> <tr> <th>104 </th> <th>2600 </th> <td>104.000 (2,641.600) </td> <td> </td> <td> </td> <td> </td></tr> <tr> <th>108 </th> <th>2700 </th> <td>108.000 (2,743.200) </td> <td>≥− </td> <td> </td> <td> </td></tr> </tbody></table> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Nominal_Pipe_Size&action=edit&section=9" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1184024115">.mw-parser-output .div-col{margin-top:0.3em;column-width:30em}.mw-parser-output .div-col-small{font-size:90%}.mw-parser-output .div-col-rules{column-rule:1px solid #aaa}.mw-parser-output .div-col dl,.mw-parser-output .div-col ol,.mw-parser-output .div-col ul{margin-top:0}.mw-parser-output .div-col li,.mw-parser-output .div-col dd{page-break-inside:avoid;break-inside:avoid-column}</style><div class="div-col" style="column-width: 18em;"> <ul><li><a href="/wiki/British_standard_pipe_thread#Pipe_thread_sizes" class="mw-redirect" title="British standard pipe thread">British standard pipe thread sizes</a></li> <li><a href="/wiki/Copper_tubing#Sizes" title="Copper tubing">Copper tubing sizes</a></li> <li><a href="/wiki/National_pipe_thread#Pipe_thread_sizes" title="National pipe thread">Pipe thread sizes</a></li> <li><a href="/wiki/National_pipe_thread#Pipe_thread_sizes" title="National pipe thread">National pipe thread sizes</a></li> <li><a href="/wiki/Pipe_(fluid_conveyance)" title="Pipe (fluid conveyance)">Pipe (fluid conveyance)</a></li> <li><a href="/wiki/Pipe_(fluid_conveyance)#Sizes" title="Pipe (fluid conveyance)">Pipe sizes</a></li> <li><a href="/wiki/Standard_dimension_ratio" title="Standard dimension ratio">Standard dimension ratio</a></li></ul> </div> <div class="mw-heading mw-heading2"><h2 id="Notes">Notes</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Nominal_Pipe_Size&action=edit&section=10" title="Edit section: Notes"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist reflist-lower-alpha"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-7"><span class="mw-cite-backlink"><b><a href="#cite_ref-7">^</a></b></span> <span class="reference-text">This is contrary to the <i>Piping Handbook</i>, which says that the schedule number can be converted to pressure by dividing the schedule by 1000 and multiplying by the allowable stress of the material.<sup id="cite_ref-FOOTNOTENayyar2000_6-0" class="reference"><a href="#cite_note-FOOTNOTENayyar2000-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> </span> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Nominal_Pipe_Size&action=edit&section=11" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239543626"><div class="reflist"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-FOOTNOTEASME_B36.101-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-FOOTNOTEASME_B36.101_1-0">^</a></b></span> <span class="reference-text"><a href="#CITEREFASME_B36.10">ASME B36.10</a>, p. 1.</span> </li> <li id="cite_note-DN-2"><span class="mw-cite-backlink">^ <a href="#cite_ref-DN_2-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-DN_2-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-DN_2-2"><sup><i><b>c</b></i></sup></a> <a href="#cite_ref-DN_2-3"><sup><i><b>d</b></i></sup></a> <a href="#cite_ref-DN_2-4"><sup><i><b>e</b></i></sup></a> <a href="#cite_ref-DN_2-5"><sup><i><b>f</b></i></sup></a></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://www.engineeringtoolbox.com/nps-nominal-pipe-sizes-d_45.html">NPS - "Nominal Pipe Size" and DN - "Diamètre Nominal"</a>, EngineeringToolbox.com</span> </li> <li id="cite_note-FOOTNOTEASME_B36.10iv-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-FOOTNOTEASME_B36.10iv_3-0">^</a></b></span> <span class="reference-text"><a href="#CITEREFASME_B36.10">ASME B36.10</a>, p. iv.</span> </li> <li id="cite_note-FOOTNOTEASME_B36.19iv-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-FOOTNOTEASME_B36.19iv_4-0">^</a></b></span> <span class="reference-text"><a href="#CITEREFASME_B36.19">ASME B36.19</a>, p. iv.</span> </li> <li id="cite_note-5"><span class="mw-cite-backlink"><b><a href="#cite_ref-5">^</a></b></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px 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.cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.hysteelpipe.com/pipe-standards/steel-pipe-schedule-chart-welded-seamless-wrought-steel-pipeasme_b36-10m-2004/">"Pipe Schedule Chart"</a>. <i>HYSP Steel Pipe</i>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=HYSP+Steel+Pipe&rft.atitle=Pipe+Schedule+Chart&rft_id=http%3A%2F%2Fwww.hysteelpipe.com%2Fpipe-standards%2Fsteel-pipe-schedule-chart-welded-seamless-wrought-steel-pipeasme_b36-10m-2004%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3ANominal+Pipe+Size" class="Z3988"></span></span> </li> <li id="cite_note-FOOTNOTENayyar2000-6"><span class="mw-cite-backlink"><b><a href="#cite_ref-FOOTNOTENayyar2000_6-0">^</a></b></span> <span class="reference-text"><a href="#CITEREFNayyar2000">Nayyar 2000</a>.</span> </li> <li id="cite_note-table-8"><span class="mw-cite-backlink">^ <a href="#cite_ref-table_8-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-table_8-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-table_8-2"><sup><i><b>c</b></i></sup></a> <a href="#cite_ref-table_8-3"><sup><i><b>d</b></i></sup></a> <a href="#cite_ref-table_8-4"><sup><i><b>e</b></i></sup></a> <a href="#cite_ref-table_8-5"><sup><i><b>f</b></i></sup></a></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://www.engineersedge.com/pipe_schedules.htm">Table of Pipe Schedules</a> from EngineersEdge.com.</span> </li> <li id="cite_note-9"><span class="mw-cite-backlink"><b><a href="#cite_ref-9">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation news cs1"><a rel="nofollow" class="external text" href="https://hardhatengineer.com/pipe/pipe-schedule-chart-nominal-pipe-sizes/">"A Complete Guide to Pipe Sizes and Pipe Schedule – Free Pocket Chart"</a>. <i>HardHat Engineer</i><span class="reference-accessdate">. Retrieved <span class="nowrap">2017-11-07</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=HardHat+Engineer&rft.atitle=A+Complete+Guide+to+Pipe+Sizes+and+Pipe+Schedule+%E2%80%93+Free+Pocket+Chart&rft_id=http%3A%2F%2Fhardhatengineer.com%2Fpipe%2Fpipe-schedule-chart-nominal-pipe-sizes%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3ANominal+Pipe+Size" class="Z3988"></span></span> </li> <li id="cite_note-FOOTNOTEA9992014-10"><span class="mw-cite-backlink"><b><a href="#cite_ref-FOOTNOTEA9992014_10-0">^</a></b></span> <span class="reference-text"><a href="#CITEREFA9992014">A999 2014</a>.</span> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="Bibliography">Bibliography</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Nominal_Pipe_Size&action=edit&section=12" title="Edit section: Bibliography"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239549316">.mw-parser-output .refbegin{margin-bottom:0.5em}.mw-parser-output .refbegin-hanging-indents>ul{margin-left:0}.mw-parser-output .refbegin-hanging-indents>ul>li{margin-left:0;padding-left:3.2em;text-indent:-3.2em}.mw-parser-output .refbegin-hanging-indents ul,.mw-parser-output .refbegin-hanging-indents ul li{list-style:none}@media(max-width:720px){.mw-parser-output .refbegin-hanging-indents>ul>li{padding-left:1.6em;text-indent:-1.6em}}.mw-parser-output .refbegin-columns{margin-top:0.3em}.mw-parser-output .refbegin-columns ul{margin-top:0}.mw-parser-output .refbegin-columns li{page-break-inside:avoid;break-inside:avoid-column}@media screen{.mw-parser-output .refbegin{font-size:90%}}</style><div class="refbegin" style=""> <ul><li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFA9992014" class="citation cs2"><i>ASTM A999 / A999M - 14 Standard Specification for General Requirements for Alloy and Stainless Steel Pipe</i>, ASTM International, 2014, <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1520%2FA0999_A0999M">10.1520/A0999_A0999M</a></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=ASTM+A999+%2F+A999M+-+14+Standard+Specification+for+General+Requirements+for+Alloy+and+Stainless+Steel+Pipe&rft.pub=ASTM+International&rft.date=2014&rft_id=info%3Adoi%2F10.1520%2FA0999_A0999M&rfr_id=info%3Asid%2Fen.wikipedia.org%3ANominal+Pipe+Size" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFNayyar2000" class="citation book cs1">Nayyar, Mohinder L. (2000). "A1". In Nayyar, Mohinder L. (ed.). <i>Piping Handbook</i> (7th ed.). New York: McGraw-Hill. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0-07-047106-1" title="Special:BookSources/0-07-047106-1"><bdi>0-07-047106-1</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=bookitem&rft.atitle=A1&rft.btitle=Piping+Handbook&rft.place=New+York&rft.edition=7th&rft.pub=McGraw-Hill&rft.date=2000&rft.isbn=0-07-047106-1&rft.aulast=Nayyar&rft.aufirst=Mohinder+L.&rfr_id=info%3Asid%2Fen.wikipedia.org%3ANominal+Pipe+Size" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFASME_B36.10" class="citation book cs1"><a rel="nofollow" class="external text" href="https://www.asme.org/products/codes-standards/b3610m-2015-welded-seamless-wrought-steel-pipe"><i>B36.10M Welded and Seamless Wrought Steel Pipe</i></a>. The American Society of Mechanical Engineers. 2015. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/9780791870273" title="Special:BookSources/9780791870273"><bdi>9780791870273</bdi></a><span class="reference-accessdate">. Retrieved <span class="nowrap">2015-10-02</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=B36.10M+Welded+and+Seamless+Wrought+Steel+Pipe&rft.pub=The+American+Society+of+Mechanical+Engineers&rft.date=2015&rft.isbn=9780791870273&rft_id=https%3A%2F%2Fwww.asme.org%2Fproducts%2Fcodes-standards%2Fb3610m-2015-welded-seamless-wrought-steel-pipe&rfr_id=info%3Asid%2Fen.wikipedia.org%3ANominal+Pipe+Size" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFASME_B36.19" class="citation book cs1"><a rel="nofollow" class="external text" href="https://www.asme.org/products/codes-standards/b3619m-2004-stainless-steel-pipe"><i>B36.19M Stainless Steel Pipe</i></a>. The American Society of Mechanical Engineers. 2004. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0791829170" title="Special:BookSources/0791829170"><bdi>0791829170</bdi></a><span class="reference-accessdate">. Retrieved <span class="nowrap">2015-10-02</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=B36.19M+Stainless+Steel+Pipe&rft.pub=The+American+Society+of+Mechanical+Engineers&rft.date=2004&rft.isbn=0791829170&rft_id=https%3A%2F%2Fwww.asme.org%2Fproducts%2Fcodes-standards%2Fb3619m-2004-stainless-steel-pipe&rfr_id=info%3Asid%2Fen.wikipedia.org%3ANominal+Pipe+Size" class="Z3988"></span></li></ul> </div> <div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Nominal_Pipe_Size&action=edit&section=13" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a rel="nofollow" class="external text" href="http://www.gizmology.net/pipe.htm">Notes on Pipe</a>—PVC Pipe weights and max PSI</li> <li><a rel="nofollow" class="external text" href="http://www.enggcyclopedia.com/welcome-to-enggcyclopedia/pipe-dim/standard-piping-dimensions-carbon-steel-stainless-steel-ansi">Quick calculator to determine standard pipe dimensions</a> For Carbon Steel and Stainless Steel pipes as per ANSI. 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