1.0SJ Gauge｜ 圧力計、温度計、圧力センサhttps://www.sj-gauge.com/jaSJ Gaugehttps://www.sj-gauge.com/ja/author/sj-gauge/rich600338<blockquote class="wp-embedded-content" data-secret="eG1egOA73F"><a href="https://www.sj-gauge.com/ja/ansi-flange-standard/">ANSI／ASMEフランジ規格：Class 150の意味と読み方</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://www.sj-gauge.com/ja/ansi-flange-standard/embed/#?secret=eG1egOA73F" width="600" height="338" title="“ANSI/ASME Flange Standards Explained: What Class 150 Means” — SJ Gauge | Pressure Gauges, Thermometers & Pressure Sensors" data-secret="eG1egOA73F" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script> /*! This file is auto-generated */ !function(d,l){"use strict";l.querySelector&&d.addEventListener&&"undefined"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!/[^a-zA-Z0-9]/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),o=l.querySelectorAll('blockquote[data-secret="'+t.secret+'"]'),c=new RegExp("^https?:$","i"),i=0;i<o.length;i++)o[i].style.display="none";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute("style"),"height"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):"link"===t.message&&(r=new URL(s.getAttribute("src")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener("message",d.wp.receiveEmbedMessage,!1),l.addEventListener("DOMContentLoaded",function(){for(var e,t,s=l.querySelectorAll("iframe.wp-embedded-content"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute("data-secret"))||(t=Math.random().toString(36).substring(2,12),e.src+="#?secret="+t,e.setAttribute("data-secret",t)),e.contentWindow.postMessage({message:"ready",secret:t},"*")},!1)))}(window,document); //# sourceURL=https://www.sj-gauge.com/wp-includes/js/wp-embed.min.js </script>https://www.sj-gauge.com/wp-content/uploads/2025/05/05-1_SJ_bottom_mount_with_flange_pressure_gauge_EN.png200200Summary: An “ANSI flange” is usually specified today by an ASME standard, nominal pipe size, pressure class, material, facing and dimensional pattern. Class 150 is a pressure-class designation—not a universal 150 psi working-pressure limit. Industry still commonly says “ANSI flange,” but ASME B16.5 is the principal standard for pipe flanges and flanged fittings from NPS 1/2 through NPS 24. Large-diameter steel flanges are addressed by ASME B16.47. Always confirm the exact standard, edition, material group and project specification. What Does ANSI Class 150 Mean? Class 150 identifies one ASME pressure class. It does not mean that every Class 150 flange is limited to exactly 150 psi. Allowable pressure varies with […]