{"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\/vi\/2026\/04\/23\/ansi-class-150-flange-dimensions-pdf-threaded-small-bore-pipe-guide\/","title":{"rendered":"H\u01b0\u1edbng d\u1eabn v\u1ec1 \u1ed1ng c\u00f3 \u0111\u01b0\u1eddng k\u00ednh nh\u1ecf v\u00e0 ren theo ti\u00eau chu\u1ea9n ANSI Class 150 (PDF)"},"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>\u00c1p su\u1ea5t \u0111\u1ecbnh m\u1ee9c<\/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>Ch\u1ec9 s\u1ed1 h\u00e0i l\u00f2ng c\u1ee7a kh\u00e1ch h\u00e0ng (NPS)<\/th>\n<th>DN<\/th>\n<th>OD<\/th>\n<th>BC<\/th>\n<th>Bu l\u00f4ng<\/th>\n<th>Hole<\/th>\n<th>Thick<\/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>M\u1eb7t b\u00edch ren cho \u1ed1ng c\u00f3 \u0111\u01b0\u1eddng k\u00ednh nh\u1ecf<\/h3>\n<p>Threaded flanges are ideal for small diameter piping where welding is impractical:<\/p>\n<h4>Ph\u1ea1m vi k\u00edch th\u01b0\u1edbc<\/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>\u1ee8ng d\u1ee5ng<\/h4>\n<ul>\n<li>K\u1ebft n\u1ed1i thi\u1ebft b\u1ecb<\/li>\n<li>Sample points<\/li>\n<li>Drain and vent lines<\/li>\n<li>C\u00e1c c\u00f4ng tr\u00ecnh t\u1ea1m th\u1eddi<\/li>\n<li>Hazardous areas (no hot work)<\/li>\n<li>Compressed air systems<\/li>\n<li>Water distribution<\/li>\n<\/ul>\n<h4>M\u1eb9o c\u00e0i \u0111\u1eb7t<\/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>D\u1ecbch v\u1ee5 s\u1eeda ch\u1eefa v\u00e0 gia c\u00f4ng m\u1eb7t b\u00edch<\/h3>\n<p>Professional repair services extend flange life and reduce replacement costs:<\/p>\n<h4>Repair Capabilities<\/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>When to Repair vs Replace<\/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>Kh\u1ea3 n\u0103ng truy xu\u1ea5t ngu\u1ed3n g\u1ed1c v\u1eadt li\u1ec7u (c\u00f3 s\u1eb5n MTR)<\/li>\n<li>Quality control procedures<\/li>\n<li>Production capacity and lead times<\/li>\n<li>Export experience and references<\/li>\n<li>D\u1ecbch v\u1ee5 h\u1eadu m\u00e3i<\/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>Y\u00eau c\u1ea7u v\u1ec1 x\u1eed l\u00fd b\u1ec1 m\u1eb7t<\/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>Corrosion Resistant Flange for Marine Use<\/h3>\n<p>Marine environments require superior corrosion resistance:<\/p>\n<h4>T\u00e0i li\u1ec7u tham kh\u1ea3o<\/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>Protective Measures<\/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:<\/strong>\u00a0+86-18658777855<br \/>\n<strong>Email:<\/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\/vi\/wp-json\/wp\/v2\/posts\/1063","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.songhaiflange.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.songhaiflange.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.songhaiflange.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.songhaiflange.com\/vi\/wp-json\/wp\/v2\/comments?post=1063"}],"version-history":[{"count":3,"href":"https:\/\/www.songhaiflange.com\/vi\/wp-json\/wp\/v2\/posts\/1063\/revisions"}],"predecessor-version":[{"id":1099,"href":"https:\/\/www.songhaiflange.com\/vi\/wp-json\/wp\/v2\/posts\/1063\/revisions\/1099"}],"wp:attachment":[{"href":"https:\/\/www.songhaiflange.com\/vi\/wp-json\/wp\/v2\/media?parent=1063"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.songhaiflange.com\/vi\/wp-json\/wp\/v2\/categories?post=1063"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.songhaiflange.com\/vi\/wp-json\/wp\/v2\/tags?post=1063"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}