{"id":60002,"date":"2026-05-26T05:47:05","date_gmt":"2026-05-26T05:47:05","guid":{"rendered":"https:\/\/www.kaysuns.com\/?post_type=blog&#038;p=60002"},"modified":"2026-06-03T07:42:11","modified_gmt":"2026-06-03T07:42:11","slug":"%d1%84%d0%be%d1%80%d0%bc%d1%83%d0%bb%d1%8b-asme-b31-3-%d0%b8-%d1%84%d0%be%d1%80%d0%bc%d1%83%d0%bb%d1%8b-%d0%b4%d0%bb%d1%8f-%d0%bd%d0%b0%d0%bf%d0%be%d1%80%d0%bd%d1%8b%d1%85-%d1%82%d1%80%d1%83%d0%b1","status":"publish","type":"blog","link":"https:\/\/www.kaysuns.com\/ru\/blog\/asme-b31-3-and-pressure-piping-formulas\/","title":{"rendered":"\u0427\u0442\u043e \u0442\u0430\u043a\u043e\u0435 ASME B31.3 \u0438 \u0444\u043e\u0440\u043c\u0443\u043b\u044b ASME B31.3 \u0434\u043b\u044f \u043d\u0430\u043f\u043e\u0440\u043d\u044b\u0445 \u0442\u0440\u0443\u0431\u043e\u043f\u0440\u043e\u0432\u043e\u0434\u043e\u0432?"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"60002\" class=\"elementor elementor-60002\" data-elementor-post-type=\"blog\">\n\t\t\t\t<div class=\"elementor-element elementor-element-13007f3 e-flex e-con-boxed e-con e-parent\" data-id=\"13007f3\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b3950fc elementor-widget elementor-widget-text-editor\" data-id=\"b3950fc\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tTo design safe,high-pressure industrial fluid systems,it is essential to understand the <strong>ASME B31.3<\/strong> standard.Selecting pipes with wall thicknesses that are too thin can lead to catastrophic structural failure.Neglecting engineering standards leads to expensive environmental penalties and legal liability.This 2026 comprehensive guide provides a thorough and detailed explanation of the core principles of process piping standards.We not only explain the fundamental equations but also provide data tables for practical applications.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-8a95f5e elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"8a95f5e\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-64f001f\" data-id=\"64f001f\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-ee60524 elementor-widget elementor-widget-heading\" data-id=\"ee60524\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Introduction to the ASME B31.3 Standard<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-046bbf5 elementor-widget elementor-widget-text-editor\" data-id=\"046bbf5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tThe American Society of Mechanical Engineers publishes the ASME B31.3 code specifically for process piping systems.This dynamic standard regulates all piping installations inside industrial chemical plants and modern petroleum refineries.Additionally,it applies directly to pharmaceutical factories,textile plants,and paper manufacturing facilities worldwide.The document governs every critical stage of pipeline creation.This oversight includes initial material selection,precise structural design,and mandatory <a href=\"https:\/\/www.kaysuns.com\/blog\/how-to-check-the-damage-without-damaging-the-stainless-steel-pipes\/\" target=\"_blank\">non-destructive testing<\/a>.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4441c3a elementor-widget elementor-widget-text-editor\" data-id=\"4441c3a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tCompliance ensures that pressure pipelines survive extreme industrial environments safely.This rigorous framework minimizes the risk of sudden gas explosions or toxic chemical leaks.Regulators globally trust this specific standard because it combines decades of verified engineering experience.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-07eafa3 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"07eafa3\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-040a117\" data-id=\"040a117\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-c33b249 elementor-widget elementor-widget-heading\" data-id=\"c33b249\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Core Scope and Applications of ASME B31.3<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-564876f elementor-widget elementor-widget-text-editor\" data-id=\"564876f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tUnderstanding the specific fluid category helps you implement ASME B31.3 rules correctly.The code classifies transported fluids based on their inherent toxicity and overall flammability risk.For example,Normal Fluid Service covers standard,non-toxic hydrocarbons and industrial water lines.Conversely,Category M Fluid Service represents highly toxic chemicals where minor leaks cause immediate death.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b9a94dd elementor-widget elementor-widget-text-editor\" data-id=\"b9a94dd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tThe standard also dictates distinct safety design margins for every individual fluid category.High-pressure piping systems require unique material inspection protocols to guarantee absolute safety.Always determine your exact fluid classification before initiating any mechanical engineering calculations.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2008d07 elementor-widget elementor-widget-heading\" data-id=\"2008d07\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Fluid Service Categories Under ASME B31.3<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c0f01f4 elementor-widget elementor-widget-text-editor\" data-id=\"c0f01f4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<table>\n<tbody>\n<tr bgcolor=\"#00a0e9\">\n<th>Fluid Service Category<\/th>\n<th>Typical Chemical Medium<\/th>\n<th>Leakage Hazard Level<\/th>\n<th>Testing Severity Requirement<\/th>\n<\/tr>\n<tr>\n<td bgcolor=\"#05B8E4\">Normal Fluid Service<\/td>\n<td>Refinery Crude Oil,Gasoline<\/td>\n<td>Moderate Operational Risk<\/td>\n<td>Standard Hydrostatic Testing<\/td>\n<\/tr>\n<tr>\n<td bgcolor=\"#05B8E4\">Category D Service<\/td>\n<td>Low-pressure Utility Water<\/td>\n<td>Very Low non-toxic Risk<\/td>\n<td>Visual Inspection Mainly<\/td>\n<\/tr>\n<tr>\n<td bgcolor=\"#05B8E4\">Category M Service<\/td>\n<td>Hydrogen Sulfide,Lethal Gas<\/td>\n<td>Extremely High Toxic Risk<\/td>\n<td>100% Radiographic Inspection<\/td>\n<\/tr>\n<tr>\n<td bgcolor=\"#05B8E4\">High Pressure Service<\/td>\n<td>Ultra-high Pressure Gas<\/td>\n<td>Extreme Mechanical Risk<\/td>\n<td>Severe Volumetric Validation<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-b628e63 elementor-section-content-middle elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"b628e63\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-no\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-a799edc\" data-id=\"a799edc\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-a3c91f1 elementor-widget__width-initial elementor-widget elementor-widget-heading\" data-id=\"a3c91f1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">What We Do<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e8d13e9 elementor-drop-cap-yes elementor-widget__width-initial elementor-drop-cap-view-default elementor-widget elementor-widget-text-editor\" data-id=\"e8d13e9\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;drop_cap&quot;:&quot;yes&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li>Plate<\/li><li>Sheet<\/li><li>Forgings<\/li><li>Round Bar<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-459cc9f elementor-drop-cap-yes elementor-widget__width-initial elementor-drop-cap-view-default elementor-widget elementor-widget-text-editor\" data-id=\"459cc9f\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;drop_cap&quot;:&quot;yes&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li>Flange<\/li><li>Pipes<\/li><li>Fittings<\/li><li>Customized<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-6c06f42\" data-id=\"6c06f42\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-dcef488 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"dcef488\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Contact Us For More Information\u00a0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6c84d1f elementor-align-center elementor-mobile-align-center elementor-widget__width-initial elementor-widget elementor-widget-button\" data-id=\"6c84d1f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm elementor-animation-grow\" href=\"#elementor-action%3Aaction%3Dpopup%3Aopen%26settings%3DeyJpZCI6IjQ2ODEzIiwidG9nZ2xlIjpmYWxzZX0%3D\" target=\"_blank\" id=\"#241018\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Contact Us<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-869982e elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"869982e\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-432a237\" data-id=\"432a237\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-f87f3a7 elementor-widget elementor-widget-heading\" data-id=\"f87f3a7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">The Essential ASME B31.3 Pressure Piping Design Formula<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bd5af20 elementor-widget elementor-widget-text-editor\" data-id=\"bd5af20\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tTo calculate minimum required wall thickness,engineers utilize the foundational ASME B31.3 pressure design formula.This mathematical equation determines if a pipe can resist intense internal hoop stress safely.The code provides the following standalone display equation for straight metallic pipes:\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bb44900 elementor-widget elementor-widget-text-editor\" data-id=\"bb44900\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div style=\"display: inline-flex; align-items: center; font-family: 'Times New Roman', serif; font-size: 20px;\">\n  <!-- \u5de6\u4fa7 -->\n  <span><i>t<\/i> = <\/span>\n  \n  <!-- \u53f3\u4fa7\u5206\u5f0f -->\n  <div style=\"display: inline-flex; flex-direction: column; align-items: center; padding: 0 6px; vertical-align: middle;\">\n    <!-- \u5206\u5b50 -->\n    <span style=\"padding-bottom: 2px;\"><i>P<\/i> \u00b7 <i>D<\/i><\/span>\n    <!-- \u4e2d\u95f4\u6a2a\u7ebf -->\n    <span style=\"width: 100%; border-top: 1.5px solid currentColor;\"><\/span>\n    <!-- \u5206\u6bcd -->\n    <span style=\"padding-top: 2px;\">2(<i>S<\/i> \u00b7 <i>E<\/i> \u00b7 <i>W<\/i> + <i>P<\/i> \u00b7 <i>Y<\/i>)<\/span>\n  <\/div>\n<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-983d50c elementor-widget elementor-widget-text-editor\" data-id=\"983d50c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li>t represents the minimum required design thickness under internal pressure (mm).<\/li><li>P represents the internal design gauge pressure of the system (MPa).<\/li><li>D represents the actual outside diameter of the pipeline (mm).<\/li><li>S represents the basic allowable stress value for the chosen material (MPa).<\/li><li>E represents the longitudinal weld joint quality factor.<\/li><li>W represents the weld joint strength reduction factor at high heat.<\/li><li>Y\u00a0represents a specialized material coefficient based on operational temperature.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1f49877 elementor-widget elementor-widget-text-editor\" data-id=\"1f49877\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tAdditionally,you must calculate the total ordered nominal wall thickness(t<sub>m<\/sub>).You must add an extra thickness buffer to account for mechanical wear and thread depths.Use this simple formula:\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-571380d elementor-widget elementor-widget-text-editor\" data-id=\"571380d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div style=\"text-align: center; margin: 25px 0; overflow-x: auto;\">\n  <svg xmlns=\"http:\/\/w3.org\" viewBox=\"0 0 160 60\" width=\"130\" height=\"50\" style=\"display: inline-block; vertical-align: middle;\">\n    <style>\n      .math-text { font-family: 'Times New Roman', Times, serif; font-size: 24px; fill: currentColor; }\n      .math-italic { font-family: 'Times New Roman', Times, serif; font-style: italic; font-size: 24px; fill: currentColor; }\n      .math-sub { font-family: 'Times New Roman', Times, serif; font-style: italic; font-size: 16px; fill: currentColor; }\n    <\/style>\n    \n    <!-- \u5de6\u4fa7: t_m -->\n    <text x=\"10\" y=\"38\" class=\"math-italic\">t<\/text>\n    <text x=\"18\" y=\"45\" class=\"math-sub\">m<\/text>\n    \n    <!-- \u7b49\u53f7 = -->\n    <text x=\"38\" y=\"38\" class=\"math-text\">=<\/text>\n    \n    <!-- \u53f3\u4fa7: t + c -->\n    <text x=\"65\" y=\"38\" class=\"math-italic\">t<\/text>\n    <text x=\"85\" y=\"38\" class=\"math-text\">+<\/text>\n    <text x=\"108\" y=\"38\" class=\"math-italic\">c<\/text>\n  <\/svg>\n<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-eac3d96 elementor-widget elementor-widget-text-editor\" data-id=\"eac3d96\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tWhere <span class=\"math-inline\" data-math=\"c\" data-index-in-node=\"6\">c<\/span> represents the sum of mechanical allowances,thread depths,and chemical corrosion factors.This total sum prevents the steel pipe from thinning dangerously over decades of service.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2750946 elementor-widget elementor-widget-heading\" data-id=\"2750946\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Y Coefficient Values for Different Metallic Materials<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-02feef5 elementor-widget elementor-widget-text-editor\" data-id=\"02feef5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<table>\n<tbody>\n<tr bgcolor=\"#00a0e9\">\n<th>Temperature (\u00b0C)<\/th>\n<th>Ferritic Steels<\/th>\n<th>Austenitic Steels<\/th>\n<th>Nickel Alloys<\/th>\n<th>Duplex Stainless Steel<\/th>\n<\/tr>\n<tr>\n<td bgcolor=\"#05B8E4\">482 and Below<\/td>\n<td>0.4<\/td>\n<td>0.4<\/td>\n<td>0.4<\/td>\n<td>0.4<\/td>\n<\/tr>\n<tr>\n<td bgcolor=\"#05B8E4\">510<\/td>\n<td>0.5<\/td>\n<td>0.4<\/td>\n<td>0.4<\/td>\n<td>0.4<\/td>\n<\/tr>\n<tr>\n<td bgcolor=\"#05B8E4\">538<\/td>\n<td>0.7<\/td>\n<td>0.4<\/td>\n<td>0.4<\/td>\n<td>0.4<\/td>\n<\/tr>\n<tr>\n<td bgcolor=\"#05B8E4\">566<\/td>\n<td>0.7<\/td>\n<td>0.5<\/td>\n<td>0.4<\/td>\n<td>0.4<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t<div class=\"elementor-element elementor-element-5c1d1ce e-flex e-con-boxed e-con e-parent\" data-id=\"5c1d1ce\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2ce3d39 elementor-widget elementor-widget-heading\" data-id=\"2ce3d39\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Step-by-Step Calculation Troubleshooting Guide<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4455550 elementor-widget elementor-widget-text-editor\" data-id=\"4455550\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tProject managers must resolve common calculation discrepancies to ensure absolute compliance during audits.Please review the detailed operational troubleshooting steps formatted specifically for your system layout below.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-aa08471 elementor-widget elementor-widget-accordion\" data-id=\"aa08471\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"accordion.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-accordion\">\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-1781\" class=\"elementor-tab-title\" data-tab=\"1\" role=\"button\" aria-controls=\"elementor-tab-content-1781\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><i class=\"fas fa-plus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><i class=\"fas fa-minus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">How do I determine the correct basic allowable stress value?<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-1781\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"1\" role=\"region\" aria-labelledby=\"elementor-tab-title-1781\"><p>Navigate directly to Appendix A of the official ASME B31.3 code publication.This section contains comprehensive data tables listing thousands of metallic material grades.Locate your specific material specification,such as <a href=\"https:\/\/www.kaysuns.com\/blog\/astm-a312-pipe-manufacturer-in-china\/\" target=\"_blank\" rel=\"noopener\">ASTM A312<\/a> TP316L seamless pipe.Then,read the exact allowable stress value based on your maximum design operating temperature.<\/p><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-1782\" class=\"elementor-tab-title\" data-tab=\"2\" role=\"button\" aria-controls=\"elementor-tab-content-1782\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><i class=\"fas fa-plus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><i class=\"fas fa-minus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">What value should I apply for the joint quality factor E?<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-1782\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"2\" role=\"region\" aria-labelledby=\"elementor-tab-title-1782\"><p>The value of factor <span class=\"math-inline\" data-math=\"E\" data-index-in-node=\"122\">E<\/span> depends entirely on the manufacturing method of the pipe shell.If you purchase high-grade seamless pipes,always input a perfect factor value of 1.0.However,standard electric fusion welded pipes introduce slight mechanical risks.So you must apply a lower factor value of 0.85 for longitudinal welded lines.<\/p><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-1783\" class=\"elementor-tab-title\" data-tab=\"3\" role=\"button\" aria-controls=\"elementor-tab-content-1783\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><i class=\"fas fa-plus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><i class=\"fas fa-minus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">Why does the code mandate a corrosion allowance factor?<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-1783\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"3\" role=\"region\" aria-labelledby=\"elementor-tab-title-1783\"><p>Corrosive chemical fluids dissolve the inner metallic pipe walls slowly during long-term operations.Therefore,omitting a corrosion buffer causes rapid structural thinning and eventual bursting.Engineers typically add a sacrificial layer of 1.5mm to 3.0mm of extra steel.This design modification extends the overall lifecycle of industrial infrastructure dramatically.<\/p><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-1784\" class=\"elementor-tab-title\" data-tab=\"4\" role=\"button\" aria-controls=\"elementor-tab-content-1784\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><i class=\"fas fa-plus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><i class=\"fas fa-minus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">When must I include the weld joint strength reduction factor W?<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-1784\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"4\" role=\"region\" aria-labelledby=\"elementor-tab-title-1784\"><p>You must incorporate factor <span class=\"math-inline\" data-math=\"W\" data-index-in-node=\"136\">W<\/span> when your operating system temperature exceeds 510\u00b0C continuously.Intense heat degrades the long-term creep rupture strength of welded joints over time.For standard temperatures below 482\u00b0C,the code allows a basic factor value of 1.0.This simplification streamlines your standard calculations safely.<\/p><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<script type=\"application\/ld+json\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"How do I determine the correct basic allowable stress value?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<p>Navigate directly to Appendix A of the official ASME B31.3 code publication.This section contains comprehensive data tables listing thousands of metallic material grades.Locate your specific material specification,such as <a href=\\\"https:\\\/\\\/www.kaysuns.com\\\/blog\\\/astm-a312-pipe-manufacturer-in-china\\\/\\\" target=\\\"_blank\\\" rel=\\\"noopener\\\">ASTM A312<\\\/a> TP316L seamless pipe.Then,read the exact allowable stress value based on your maximum design operating temperature.<\\\/p>\"}},{\"@type\":\"Question\",\"name\":\"What value should I apply for the joint quality factor E?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<p>The value of factor <span class=\\\"math-inline\\\" data-math=\\\"E\\\" data-index-in-node=\\\"122\\\">E<\\\/span> depends entirely on the manufacturing method of the pipe shell.If you purchase high-grade seamless pipes,always input a perfect factor value of 1.0.However,standard electric fusion welded pipes introduce slight mechanical risks.So you must apply a lower factor value of 0.85 for longitudinal welded lines.<\\\/p>\"}},{\"@type\":\"Question\",\"name\":\"Why does the code mandate a corrosion allowance factor?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<p>Corrosive chemical fluids dissolve the inner metallic pipe walls slowly during long-term operations.Therefore,omitting a corrosion buffer causes rapid structural thinning and eventual bursting.Engineers typically add a sacrificial layer of 1.5mm to 3.0mm of extra steel.This design modification extends the overall lifecycle of industrial infrastructure dramatically.<\\\/p>\"}},{\"@type\":\"Question\",\"name\":\"When must I include the weld joint strength reduction factor W?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<p>You must incorporate factor <span class=\\\"math-inline\\\" data-math=\\\"W\\\" data-index-in-node=\\\"136\\\">W<\\\/span> when your operating system temperature exceeds 510\\u00b0C continuously.Intense heat degrades the long-term creep rupture strength of welded joints over time.For standard temperatures below 482\\u00b0C,the code allows a basic factor value of 1.0.This simplification streamlines your standard calculations safely.<\\\/p>\"}}]}<\/script>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-1b4694e e-flex e-con-boxed e-con e-parent\" data-id=\"1b4694e\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-34ac5e0 elementor-cta--layout-image-left elementor-cta--mobile-layout-image-above elementor-cta--skin-classic elementor-animated-content elementor-widget elementor-widget-call-to-action\" data-id=\"34ac5e0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"call-to-action.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<a class=\"elementor-cta\" href=\"#elementor-action%3Aaction%3Dpopup%3Aopen%26settings%3DeyJpZCI6IjQ2ODEzIiwidG9nZ2xlIjpmYWxzZX0%3D\" target=\"_blank\">\n\t\t\t\t\t<div class=\"elementor-cta__bg-wrapper\">\n\t\t\t\t<div class=\"elementor-cta__bg elementor-bg\" style=\"background-image: url(https:\/\/www.kaysuns.com\/wp-content\/uploads\/2026\/05\/ASME-B31.3-And-Pressure-Piping-Formulas-1.4410-38.0x1.25x7310mm-A789-TC1-D4-T3-HEAT-NO-NY564H876-CTA-scaled-e1779766447579.webp);\" role=\"img\" aria-label=\"ASME B31.3 And Pressure Piping Formulas - 1.4410 38.0x1.25x7310mm A789 TC1 D4 T3 HEAT NO NY564H876 - CTA\"><\/div>\n\t\t\t\t<div class=\"elementor-cta__bg-overlay\"><\/div>\n\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-cta__content\">\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t<h2 class=\"elementor-cta__title elementor-cta__content-item elementor-content-item\">\n\t\t\t\t\t\tFeel Free To Contact Us\t\t\t\t\t<\/h2>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-cta__description elementor-cta__content-item elementor-content-item\">\n\t\t\t\t\t\tKAYSUNS offers package solutions for piping materials such as Pipes, Fittings, Flanges, Valves, Plates, Forgings, Ingots of Stainless Steel, Duplex and Alloy Steels, all kinds of Fasteners (Bolts, Nuts, Flat Washers, Bullet Washers) and other products. We accept customized service for our products and some of them can be supplied in small quantities. If you have any questions about our company and products, please feel free to contact us.\t\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-cta__button-wrapper elementor-cta__content-item elementor-content-item \">\n\t\t\t\t\t<span class=\"elementor-cta__button elementor-button elementor-size-\">\n\t\t\t\t\t\tGet QUOTE\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-ceeae64 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"ceeae64\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-649a286\" data-id=\"649a286\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-49e1548 elementor-widget elementor-widget-heading\" data-id=\"49e1548\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Comparing Material Stress Under ASME B31.3<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-70d88f2 elementor-widget elementor-widget-text-editor\" data-id=\"70d88f2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tSelecting the right metal grade alters the final required wall thickness significantly.High-strength alloys possess superior allowable stress limits across all temperature ranges.Consequently,choosing premium grades allows factories to specify thinner pipe walls safely.Thinner pipe walls reduce overall structure weight and minimize total freight shipment costs.Let us evaluate common stainless steel grades below.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d2206e3 elementor-widget elementor-widget-heading\" data-id=\"d2206e3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Allowable Stress Comparison at Elevated Temperatures<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fbb1194 elementor-widget elementor-widget-text-editor\" data-id=\"fbb1194\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<table>\n<tbody>\n<tr bgcolor=\"#00a0e9\">\n<th>Material Specification Grade<\/th>\n<th>Pipe Structure Type<\/th>\n<th>Allowable Stress at 100\u00b0C<\/th>\n<th>Allowable Stress at 300\u00b0C<\/th>\n<\/tr>\n<tr>\n<td bgcolor=\"#05B8E4\">ASTM A312 TP304<\/td>\n<td>Premium Seamless<\/td>\n<td>138 MPa<\/td>\n<td>102 MPa<\/td>\n<\/tr>\n<tr>\n<td bgcolor=\"#05B8E4\">ASTM A312 TP316L<\/td>\n<td>Premium Seamless<\/td>\n<td>115 MPa<\/td>\n<td>86.2 MPa<\/td>\n<\/tr>\n<tr>\n<td bgcolor=\"#05B8E4\">ASTM A106 Grade B<\/td>\n<td>Carbon Steel Seamless<\/td>\n<td>138 MPa<\/td>\n<td>124 MPa<\/td>\n<\/tr>\n<tr>\n<td bgcolor=\"#05B8E4\">ASTM A790 UNS S32205<\/td>\n<td>Duplex Seamless<\/td>\n<td>241 MPa<\/td>\n<td>209 MPa<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-3cc735b elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"3cc735b\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-eda033c\" data-id=\"eda033c\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-9c9633d elementor-widget elementor-widget-heading\" data-id=\"9c9633d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Engineering Sourcing and Compliance Solutions<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6389058 elementor-widget elementor-widget-text-editor\" data-id=\"6389058\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tASME B31.3 is key to ensuring the long-term,stable operation of industrial fluid piping systems.We must precisely calculate the required wall thickness to withstand extreme pressures.Additionally,it is essential to verify that material suppliers hold authoritative international quality certifications.True compliance with the standard requires that a comprehensive Manufacturer\u2019s Test Certificate (MTC) be provided for every pipe ordered.These documents accurately verify the pipe\u2019s chemical composition and track its physical yield strength.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t<div class=\"elementor-element elementor-element-28f908e e-flex e-con-boxed e-con e-parent\" data-id=\"28f908e\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3d3de95 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"3d3de95\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bce72f4 elementor-widget elementor-widget-text-editor\" data-id=\"bce72f4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tOur global supply chain network 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