An <a href="https://en.wikipedia.org/wiki/ASME" class="extiw" title="w:ASME">ASME</a> A13.1-2007 pipe marking for <a href="https://en.wikipedia.org/wiki/Chlorine" class="extiw" title="w:Chlorine">Chlorine</a>.
<a href="//commons.wikimedia.org/wiki/User:The_Navigators" title="User:The Navigators">The Navigators</a>
<p>Drawn by uploader following guidelines laid out in ASME A13.1 2015.
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<a rel="nofollow" class="external text" href="https://www.pipemarker.com/static/PDF/ANSI-ASME-Summary.pdf">ASME A13.1</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20190321033946/https://www.pipemarker.com/static/PDF/ANSI-ASME-Summary.pdf">Archived</a>