{"id":1063,"date":"2026-04-23T20:05:08","date_gmt":"2026-04-24T00:05:08","guid":{"rendered":"https:\/\/www.songhaiflange.com\/?p=1063"},"modified":"2026-04-27T08:01:06","modified_gmt":"2026-04-27T12:01:06","slug":"ansi-class-150-flange-dimensions-pdf-threaded-small-bore-pipe-guide","status":"publish","type":"post","link":"https:\/\/www.songhaiflange.com\/zh\/2026\/04\/23\/ansi-class-150-flange-dimensions-pdf-threaded-small-bore-pipe-guide\/","title":{"rendered":"ANSI 150 \u7ea7\u6cd5\u5170\u5c3a\u5bf8 PDF \u87ba\u7eb9\u5c0f\u53e3\u5f84\u7ba1\u9053\u6307\u5357"},"content":{"rendered":"<h2>ANSI Class 150 Flange Dimensions Complete Reference<\/h2>\n<p>ANSI Class 150 flanges are the most widely used flange type in industrial piping. This guide provides complete dimensional data, PDF references, and selection information for engineers and procurement professionals.<\/p>\n<h3>Class 150 Flange Overview<\/h3>\n<p>ANSI\/ASME B16.5 Class 150 flanges are designed for low to medium pressure applications:<\/p>\n<h4>\u538b\u529b\u7b49\u7ea7<\/h4>\n<ul>\n<li>Maximum working pressure: 285 psi at ambient temperature<\/li>\n<li>Hydrostatic test pressure: 450 psi<\/li>\n<li>Temperature range: -20\u00b0F to 800\u00b0F (-29\u00b0C to 427\u00b0C)<\/li>\n<li>Pressure decreases at elevated temperatures<\/li>\n<\/ul>\n<h4>Common Materials<\/h4>\n<ul>\n<li>Carbon Steel: ASTM A105, A350 LF2<\/li>\n<li>Stainless Steel: A182 F304\/304L, F316\/316L<\/li>\n<li>Alloy Steel: A182 F11, F22, F91<\/li>\n<li>Duplex: A182 F51, F53<\/li>\n<\/ul>\n<h3>Complete Dimension Tables<\/h3>\n<h4>NPS 1\/2 to NPS 24 Class 150 Dimensions<\/h4>\n<table>\n<tbody>\n<tr>\n<th>NPS<\/th>\n<th>DN<\/th>\n<th>OD<\/th>\n<th>\u4e0d\u5217\u98a0\u54e5\u4f26\u6bd4\u4e9a\u7701<\/th>\n<th>\u87ba\u6813<\/th>\n<th>\u5b54\u6d1e<\/th>\n<th>\u539a<\/th>\n<\/tr>\n<tr>\n<td>1\/2<\/td>\n<td>15<\/td>\n<td>3.50<\/td>\n<td>2.38<\/td>\n<td>4<\/td>\n<td>0.62<\/td>\n<td>0.44<\/td>\n<\/tr>\n<tr>\n<td>3\/4<\/td>\n<td>20<\/td>\n<td>3.88<\/td>\n<td>2.75<\/td>\n<td>4<\/td>\n<td>0.62<\/td>\n<td>0.50<\/td>\n<\/tr>\n<tr>\n<td>1<\/td>\n<td>25<\/td>\n<td>4.25<\/td>\n<td>3.12<\/td>\n<td>4<\/td>\n<td>0.62<\/td>\n<td>0.56<\/td>\n<\/tr>\n<tr>\n<td>1.1\/4<\/td>\n<td>32<\/td>\n<td>4.62<\/td>\n<td>3.50<\/td>\n<td>4<\/td>\n<td>0.62<\/td>\n<td>0.56<\/td>\n<\/tr>\n<tr>\n<td>1.1\/2<\/td>\n<td>40<\/td>\n<td>5.00<\/td>\n<td>3.88<\/td>\n<td>4<\/td>\n<td>0.62<\/td>\n<td>0.62<\/td>\n<\/tr>\n<tr>\n<td>2<\/td>\n<td>50<\/td>\n<td>6.00<\/td>\n<td>4.75<\/td>\n<td>4<\/td>\n<td>0.75<\/td>\n<td>0.62<\/td>\n<\/tr>\n<tr>\n<td>2.1\/2<\/td>\n<td>65<\/td>\n<td>7.00<\/td>\n<td>5.50<\/td>\n<td>4<\/td>\n<td>0.75<\/td>\n<td>0.69<\/td>\n<\/tr>\n<tr>\n<td>3<\/td>\n<td>80<\/td>\n<td>7.50<\/td>\n<td>6.00<\/td>\n<td>4<\/td>\n<td>0.75<\/td>\n<td>0.75<\/td>\n<\/tr>\n<tr>\n<td>4<\/td>\n<td>100<\/td>\n<td>9.00<\/td>\n<td>7.50<\/td>\n<td>8<\/td>\n<td>0.75<\/td>\n<td>0.81<\/td>\n<\/tr>\n<tr>\n<td>5<\/td>\n<td>125<\/td>\n<td>10.00<\/td>\n<td>8.50<\/td>\n<td>8<\/td>\n<td>0.75<\/td>\n<td>0.88<\/td>\n<\/tr>\n<tr>\n<td>6<\/td>\n<td>150<\/td>\n<td>11.00<\/td>\n<td>9.50<\/td>\n<td>8<\/td>\n<td>0.88<\/td>\n<td>0.94<\/td>\n<\/tr>\n<tr>\n<td>8<\/td>\n<td>200<\/td>\n<td>13.50<\/td>\n<td>11.75<\/td>\n<td>8<\/td>\n<td>0.88<\/td>\n<td>1.06<\/td>\n<\/tr>\n<tr>\n<td>10<\/td>\n<td>250<\/td>\n<td>16.00<\/td>\n<td>14.25<\/td>\n<td>12<\/td>\n<td>0.88<\/td>\n<td>1.12<\/td>\n<\/tr>\n<tr>\n<td>12<\/td>\n<td>300<\/td>\n<td>19.00<\/td>\n<td>17.00<\/td>\n<td>12<\/td>\n<td>1.00<\/td>\n<td>1.12<\/td>\n<\/tr>\n<tr>\n<td>14<\/td>\n<td>350<\/td>\n<td>21.00<\/td>\n<td>18.75<\/td>\n<td>12<\/td>\n<td>1.12<\/td>\n<td>1.19<\/td>\n<\/tr>\n<tr>\n<td>16<\/td>\n<td>400<\/td>\n<td>23.50<\/td>\n<td>21.25<\/td>\n<td>16<\/td>\n<td>1.12<\/td>\n<td>1.31<\/td>\n<\/tr>\n<tr>\n<td>18<\/td>\n<td>450<\/td>\n<td>25.00<\/td>\n<td>22.75<\/td>\n<td>16<\/td>\n<td>1.25<\/td>\n<td>1.44<\/td>\n<\/tr>\n<tr>\n<td>20<\/td>\n<td>500<\/td>\n<td>27.50<\/td>\n<td>25.00<\/td>\n<td>20<\/td>\n<td>1.25<\/td>\n<td>1.56<\/td>\n<\/tr>\n<tr>\n<td>24<\/td>\n<td>600<\/td>\n<td>32.00<\/td>\n<td>29.50<\/td>\n<td>20<\/td>\n<td>1.38<\/td>\n<td>1.69<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Note: All dimensions in inches. OD=Outside Diameter, BC=Bolt Circle, Hole=Bolt Hole Diameter, Thick=Flange Thickness<\/p>\n<h3>\u7528\u4e8e\u5c0f\u53e3\u5f84\u7ba1\u9053\u7684\u87ba\u7eb9\u6cd5\u5170<\/h3>\n<p>Threaded flanges are ideal for small diameter piping where welding is impractical:<\/p>\n<h4>\u5c3a\u5bf8\u8303\u56f4<\/h4>\n<ul>\n<li>Available: NPS 1\/2 to NPS 4 (DN15 to DN100)<\/li>\n<li>Pressure classes: 150, 300, 600, 900, 1500, 2500<\/li>\n<li>Thread types: NPT, BSP, PT<\/li>\n<\/ul>\n<h4>\u5e94\u7528<\/h4>\n<ul>\n<li>\u4eea\u5668\u8fde\u63a5<\/li>\n<li>Sample points<\/li>\n<li>Drain and vent lines<\/li>\n<li>\u4e34\u65f6\u8bbe\u65bd<\/li>\n<li>Hazardous areas (no hot work)<\/li>\n<li>\u538b\u7f29\u7a7a\u6c14\u7cfb\u7edf<\/li>\n<li>\u914d\u6c34<\/li>\n<\/ul>\n<h4>Installation Tips<\/h4>\n<ol>\n<li>Clean threads on both flange and pipe<\/li>\n<li>Apply PTFE tape or thread compound<\/li>\n<li>Hand-tighten first, then wrench<\/li>\n<li>Leave 1-2 threads exposed<\/li>\n<li>Do not overtighten<\/li>\n<\/ol>\n<h3>\u6cd5\u5170\u7ef4\u4fee\u548c\u52a0\u5de5\u670d\u52a1<\/h3>\n<p>\u4e13\u4e1a\u7ef4\u4fee\u670d\u52a1\u53ef\u5ef6\u957f\u6cd5\u5170\u5bff\u547d\uff0c\u964d\u4f4e\u66f4\u6362\u6210\u672c\uff1a<\/p>\n<h4>\u7ef4\u4fee\u80fd\u529b<\/h4>\n<ul>\n<li><strong>Face Resurfacing:<\/strong> Repair damaged sealing surfaces<\/li>\n<li><strong>Bore Machining:<\/strong> Restore proper pipe fit<\/li>\n<li><strong>Bolt Hole Repair:<\/strong> Fix stripped or damaged holes<\/li>\n<li><strong>Weld Overlay:<\/strong> Build up worn surfaces<\/li>\n<li><strong>Re-drilling:<\/strong> Modify bolt patterns<\/li>\n<\/ul>\n<h4>\u4f55\u65f6\u7ef4\u4fee\u4e0e\u66f4\u6362<\/h4>\n<ul>\n<li>Minor surface damage: Repair<\/li>\n<li>Severe corrosion: Replace<\/li>\n<li>Cracked flange: Replace<\/li>\n<li>Dimensional out of tolerance: Repair or replace<\/li>\n<\/ul>\n<h3>Carbon Steel Flange Suppliers<\/h3>\n<p>Finding reliable suppliers ensures quality and competitive pricing:<\/p>\n<h4>Supplier Selection Criteria<\/h4>\n<ol>\n<li>Manufacturing capabilities and certifications<\/li>\n<li>Material traceability (MTR available)<\/li>\n<li>Quality control procedures<\/li>\n<li>Production capacity and lead times<\/li>\n<li>Export experience and references<\/li>\n<li>After-sales support<\/li>\n<\/ol>\n<h4>Price Indicators<\/h4>\n<ul>\n<li>Raw material costs (steel prices)<\/li>\n<li>Manufacturing complexity<\/li>\n<li>\u8868\u9762\u5904\u7406\u8981\u6c42<\/li>\n<li>Quantity and size<\/li>\n<li>Certification requirements<\/li>\n<\/ul>\n<h3>Stainless Steel Flange Manufacturers by Country<\/h3>\n<h4>Major Manufacturing Regions<\/h4>\n<ul>\n<li><strong>China:<\/strong> Largest producer, competitive pricing<\/li>\n<li><strong>India:<\/strong> Growing capacity, good quality<\/li>\n<li><strong>Italy:<\/strong> Premium quality, higher cost<\/li>\n<li><strong>USA:<\/strong> Domestic supply, quick delivery<\/li>\n<li><strong>Japan:<\/strong> High precision, excellent quality<\/li>\n<\/ul>\n<h3>\u8239\u7528\u8010\u8150\u8680\u6cd5\u5170<\/h3>\n<p>Marine environments require superior corrosion resistance:<\/p>\n<h4>\u63a8\u8350\u6750\u6599<\/h4>\n<ul>\n<li>316\/316L: General marine applications<\/li>\n<li>2205 Duplex: Offshore platforms<\/li>\n<li>2507 Super Duplex: Severe conditions<\/li>\n<li>904L: Chemical tankers<\/li>\n<li>Aluminum Bronze: Propeller shafts<\/li>\n<\/ul>\n<h4>\u4fdd\u62a4\u63aa\u65bd<\/h4>\n<ul>\n<li>Cathodic protection systems<\/li>\n<li>Protective coatings<\/li>\n<li>Regular inspection and maintenance<\/li>\n<li>Sacrificial anodes<\/li>\n<\/ul>\n<h3>Download Resources<\/h3>\n<ul>\n<li>ASME B16.5 dimension charts (PDF)<\/li>\n<li>Material selection guides<\/li>\n<li>Installation procedures<\/li>\n<li>Inspection checklists<\/li>\n<\/ul>\n<p>Songhai Flange supplies ANSI Class 150 flanges in all sizes with complete dimensional certification. Threaded flanges available for small bore applications. Contact us for repair services and marine-grade corrosion resistant options.<\/p>\n<p><strong>WhatsApp\uff1a<\/strong>\u00a0+86-18658777855<br \/>\n<strong>\u7535\u5b50\u90ae\u4ef6\uff1a<\/strong>\u00a01007788887@qq.com<br \/>\n<a href=\"https:\/\/www.720yun.com\/vr\/a6ajt7ynrw0\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-1480\" src=\"http:\/\/www.songhaiflanges.com\/wp-content\/uploads\/2026\/04\/4-1.webp\" alt=\"\" width=\"1290\" height=\"2317\" title=\"\"><\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>ANSI Class 150 Flange Dimensions Complete Reference ANSI Class 150 flanges are the most widely used flange type in industrial piping. This guide provides complete dimensional data, PDF references, and selection information for engineers and procurement professionals. Class 150 Flange Overview ANSI\/ASME B16.5 Class 150 flanges are designed for low to medium pressure applications: Pressure [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[81,66,72,70,104],"class_list":["post-1063","post","type-post","status-publish","format-standard","hentry","category-blog","tag-ansi","tag-flange","tag-rating","tag-standard","tag-threaded"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.songhaiflange.com\/zh\/wp-json\/wp\/v2\/posts\/1063","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.songhaiflange.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.songhaiflange.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.songhaiflange.com\/zh\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.songhaiflange.com\/zh\/wp-json\/wp\/v2\/comments?post=1063"}],"version-history":[{"count":3,"href":"https:\/\/www.songhaiflange.com\/zh\/wp-json\/wp\/v2\/posts\/1063\/revisions"}],"predecessor-version":[{"id":1099,"href":"https:\/\/www.songhaiflange.com\/zh\/wp-json\/wp\/v2\/posts\/1063\/revisions\/1099"}],"wp:attachment":[{"href":"https:\/\/www.songhaiflange.com\/zh\/wp-json\/wp\/v2\/media?parent=1063"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.songhaiflange.com\/zh\/wp-json\/wp\/v2\/categories?post=1063"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.songhaiflange.com\/zh\/wp-json\/wp\/v2\/tags?post=1063"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}