{"id":35674,"date":"2026-07-06T11:25:19","date_gmt":"2026-07-06T07:55:19","guid":{"rendered":"https:\/\/iranetesal.com\/detect-fake-welding-fittings\/"},"modified":"2026-07-14T10:03:12","modified_gmt":"2026-07-14T06:33:12","slug":"detect-fake-welding-fittings","status":"publish","type":"post","link":"https:\/\/iranetesal.com\/en\/detect-fake-welding-fittings\/","title":{"rendered":"How to Identify Counterfeit Pipe Fittings?"},"content":{"rendered":"\t\t
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\n\t\t\t\t\t\r\n\r\n\r\n \r\n \r\n How to Detect Fake or Low-Quality Welding Fittings<\/title>\r\n <meta name=\"description\" content=\"Complete guide to detecting fake and low-quality welding fittings. Learn about marking, thickness, weight, surface quality, bevel, dimensions, MTC, and choosing reliable manufacturers.\" \/>\r\n <meta name=\"keywords\" content=\"detect fake welding fittings, welding fittings quality, ASTM A234, ASME B16.9, SCH40, quality control, MTC, Iran Etessal, pipe fittings, industrial welding\" \/>\r\n <link rel=\"canonical\" href=\"https:\/\/yourdomain.com\/detect-fake-welding-fittings\" \/>\r\n\r\n <style>\r\n \/* ===== Reset ===== *\/\r\n * {\r\n margin: 0;\r\n padding: 0;\r\n box-sizing: border-box;\r\n }\r\n\r\n body {\r\n font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;\r\n background: #f1f5f9;\r\n color: #0b1a2e;\r\n line-height: 1.9;\r\n padding: 15px;\r\n }\r\n\r\n \/* ===== \u0627\u06cc\u0631\u0627\u0646 \u0622\u0631\u062a\u06cc\u06a9\u0644 ===== *\/\r\n .iran-article {\r\n max-width: 1100px;\r\n margin: 0 auto;\r\n background: #ffffff;\r\n border-radius: 28px;\r\n padding: 30px 35px;\r\n box-shadow: 0 10px 40px rgba(0, 0, 0, 0.06);\r\n }\r\n\r\n \/* ===== Header ===== *\/\r\n .iran-article .header {\r\n text-align: center;\r\n margin-bottom: 30px;\r\n padding-bottom: 20px;\r\n border-bottom: 3px solid #e2e8f0;\r\n }\r\n\r\n .iran-article .header .badge {\r\n display: inline-block;\r\n background: #b91c1c;\r\n color: #fff;\r\n padding: 4px 20px;\r\n border-radius: 30px;\r\n font-size: 0.75rem;\r\n font-weight: 700;\r\n margin-bottom: 10px;\r\n }\r\n\r\n .iran-article .header h1 {\r\n font-size: 2.2rem;\r\n font-weight: 800;\r\n color: #0b1a2e;\r\n }\r\n\r\n .iran-article .header h1 i {\r\n color: #b91c1c;\r\n }\r\n\r\n .iran-article .header .sub {\r\n font-size: 1rem;\r\n color: #4a5568;\r\n margin-top: 6px;\r\n }\r\n\r\n \/* ===== Table of Contents ===== *\/\r\n .iran-article .toc {\r\n background: #f1f5f9;\r\n padding: 14px 20px;\r\n border-radius: 14px;\r\n margin-bottom: 25px;\r\n border-left: 5px solid #b91c1c;\r\n }\r\n\r\n .iran-article .toc h3 {\r\n font-size: 0.95rem;\r\n font-weight: 700;\r\n color: #0b1a2e;\r\n margin-bottom: 6px;\r\n }\r\n\r\n .iran-article .toc h3 i {\r\n color: #b91c1c;\r\n margin-right: 6px;\r\n }\r\n\r\n .iran-article .toc-grid {\r\n display: flex;\r\n flex-wrap: wrap;\r\n gap: 4px 12px;\r\n }\r\n\r\n .iran-article .toc-grid a {\r\n color: #1e293b;\r\n text-decoration: none;\r\n font-size: 0.85rem;\r\n font-weight: 500;\r\n padding: 2px 0;\r\n border-bottom: 2px solid transparent;\r\n transition: 0.3s;\r\n }\r\n\r\n .iran-article .toc-grid a:hover {\r\n color: #b91c1c;\r\n border-bottom-color: #b91c1c;\r\n }\r\n\r\n .iran-article .toc-grid a i {\r\n margin-right: 3px;\r\n font-size: 0.6rem;\r\n color: #b91c1c;\r\n }\r\n\r\n \/* ===== Headings ===== *\/\r\n .iran-article h2 {\r\n font-size: 1.6rem;\r\n font-weight: 700;\r\n margin-top: 35px;\r\n margin-bottom: 14px;\r\n padding-left: 14px;\r\n border-left: 5px solid #b91c1c;\r\n color: #0b1a2e;\r\n }\r\n\r\n .iran-article h3 {\r\n font-size: 1.2rem;\r\n font-weight: 700;\r\n margin-top: 25px;\r\n margin-bottom: 10px;\r\n color: #1a365d;\r\n }\r\n\r\n .iran-article p {\r\n margin-bottom: 14px;\r\n font-size: 1rem;\r\n color: #1e293b;\r\n }\r\n\r\n .iran-article ul,\r\n .iran-article ol {\r\n margin: 12px 0 16px 25px;\r\n }\r\n\r\n .iran-article li {\r\n margin-bottom: 6px;\r\n font-size: 1rem;\r\n }\r\n\r\n .iran-article .highlight {\r\n background: #fef3c7;\r\n padding: 1px 6px;\r\n border-radius: 4px;\r\n font-weight: 700;\r\n }\r\n\r\n \/* ===== Table ===== *\/\r\n .iran-article .table-wrap {\r\n overflow-x: auto;\r\n margin: 20px 0;\r\n border-radius: 14px;\r\n border: 1px solid #e2e8f0;\r\n }\r\n\r\n .iran-article table {\r\n width: 100%;\r\n border-collapse: collapse;\r\n font-size: 0.9rem;\r\n }\r\n\r\n .iran-article th {\r\n background: #0b1a2e;\r\n color: #fff;\r\n padding: 10px 14px;\r\n text-align: left;\r\n }\r\n\r\n .iran-article td {\r\n padding: 10px 14px;\r\n border-bottom: 1px solid #edf2f7;\r\n }\r\n\r\n .iran-article tr:last-child td {\r\n border-bottom: none;\r\n }\r\n\r\n \/* ===== Cards ===== *\/\r\n .iran-article .diag-card {\r\n background: #f8fafc;\r\n padding: 16px 18px;\r\n border-radius: 14px;\r\n border-left: 4px solid #b91c1c;\r\n margin-bottom: 16px;\r\n scroll-margin-top: 20px;\r\n }\r\n\r\n .iran-article .diag-card .num {\r\n display: inline-block;\r\n background: #b91c1c;\r\n color: #fff;\r\n width: 26px;\r\n height: 26px;\r\n border-radius: 50%;\r\n text-align: center;\r\n line-height: 26px;\r\n font-weight: 700;\r\n font-size: 0.8rem;\r\n margin-right: 6px;\r\n }\r\n\r\n .iran-article .diag-card i {\r\n font-size: 1.2rem;\r\n color: #b91c1c;\r\n margin-right: 6px;\r\n }\r\n\r\n .iran-article .diag-card h4 {\r\n display: inline-block;\r\n font-size: 1.05rem;\r\n font-weight: 700;\r\n color: #0b1a2e;\r\n }\r\n\r\n .iran-article .diag-card .code-sample {\r\n background: #0b1a2e;\r\n color: #e2e8f0;\r\n padding: 10px 14px;\r\n border-radius: 10px;\r\n font-family: monospace;\r\n direction: ltr;\r\n text-align: left;\r\n overflow-x: auto;\r\n margin: 8px 0;\r\n font-size: 0.8rem;\r\n }\r\n\r\n \/* ===== Metallurgy Grid ===== *\/\r\n .iran-article .metal-grid {\r\n display: grid;\r\n grid-template-columns: 1fr 1fr;\r\n gap: 14px;\r\n margin: 16px 0;\r\n }\r\n\r\n .iran-article .metal-card {\r\n background: #f1f5f9;\r\n padding: 14px 16px;\r\n border-radius: 14px;\r\n border-left: 4px solid #2563eb;\r\n }\r\n\r\n .iran-article .metal-card i {\r\n color: #2563eb;\r\n font-size: 1.2rem;\r\n margin-right: 6px;\r\n }\r\n\r\n .iran-article .metal-card h4 {\r\n display: inline-block;\r\n font-size: 1.05rem;\r\n margin: 0;\r\n }\r\n\r\n .iran-article .metal-card p {\r\n font-size: 0.95rem;\r\n margin: 6px 0 0 0;\r\n }\r\n\r\n \/* ===== Alert Boxes ===== *\/\r\n .iran-article .alert-box {\r\n padding: 14px 18px;\r\n border-radius: 12px;\r\n margin: 14px 0;\r\n border-left: 5px solid;\r\n }\r\n\r\n .iran-article .alert-box.danger {\r\n background: #fef2f2;\r\n border-left-color: #b91c1c;\r\n }\r\n\r\n .iran-article .alert-box.success {\r\n background: #ecfdf5;\r\n border-left-color: #16a34a;\r\n }\r\n\r\n .iran-article .alert-box.info {\r\n background: #eff6ff;\r\n border-left-color: #2563eb;\r\n }\r\n\r\n .iran-article .alert-box.warning {\r\n background: #fffbeb;\r\n border-left-color: #f59e0b;\r\n }\r\n\r\n .iran-article .alert-box i {\r\n margin-right: 8px;\r\n font-size: 1.1rem;\r\n }\r\n\r\n \/* ===== Checklist ===== *\/\r\n .iran-article .checklist {\r\n background: #f1f5f9;\r\n padding: 16px 20px;\r\n border-radius: 14px;\r\n margin: 16px 0;\r\n }\r\n\r\n .iran-article .checklist li {\r\n list-style: none;\r\n padding-left: 28px;\r\n position: relative;\r\n }\r\n\r\n .iran-article .checklist li::before {\r\n content: \"\u2705\";\r\n position: absolute;\r\n left: -4px;\r\n top: 0;\r\n font-size: 1rem;\r\n }\r\n\r\n \/* ===== Iran Banner ===== *\/\r\n .iran-article .iran-banner {\r\n background: #0b1a2e;\r\n color: #fff;\r\n padding: 25px 22px;\r\n border-radius: 20px;\r\n margin: 35px 0 20px;\r\n text-align: center;\r\n }\r\n\r\n .iran-article .iran-banner h2 {\r\n color: #fff;\r\n border-left-color: #fbbf24;\r\n margin-top: 0;\r\n }\r\n\r\n .iran-article .iran-banner p {\r\n color: #e2e8f0;\r\n }\r\n\r\n .iran-article .iran-banner .gold {\r\n color: #fbbf24;\r\n font-weight: 700;\r\n }\r\n\r\n .iran-article .iran-banner .feature-list {\r\n display: flex;\r\n flex-wrap: wrap;\r\n justify-content: center;\r\n gap: 8px 16px;\r\n margin: 10px 0;\r\n }\r\n\r\n .iran-article .iran-banner .feature-list span {\r\n background: rgba(255, 255, 255, 0.08);\r\n padding: 4px 14px;\r\n border-radius: 20px;\r\n font-size: 0.85rem;\r\n }\r\n\r\n \/* ===== Button ===== *\/\r\n .iran-article .btn {\r\n display: inline-block;\r\n background: #b91c1c;\r\n color: #fff;\r\n padding: 10px 32px;\r\n border-radius: 50px;\r\n text-decoration: none;\r\n font-weight: 700;\r\n font-size: 0.95rem;\r\n transition: 0.3s;\r\n border: none;\r\n cursor: pointer;\r\n }\r\n\r\n .iran-article .btn:hover {\r\n background: #991b1b;\r\n transform: scale(1.02);\r\n }\r\n\r\n .iran-article .btn i {\r\n margin-right: 6px;\r\n }\r\n\r\n .iran-article .btn-outline {\r\n background: transparent;\r\n border: 2px solid #fbbf24;\r\n color: #fbbf24;\r\n }\r\n\r\n .iran-article .btn-outline:hover {\r\n background: #fbbf24;\r\n color: #0b1a2e;\r\n }\r\n\r\n \/* ===== Footer ===== *\/\r\n .iran-article .footer {\r\n margin-top: 40px;\r\n padding-top: 20px;\r\n border-top: 2px solid #e2e8f0;\r\n text-align: center;\r\n color: #4a5568;\r\n font-size: 0.85rem;\r\n }\r\n\r\n .iran-article .footer a {\r\n color: #b91c1c;\r\n font-weight: 600;\r\n text-decoration: none;\r\n }\r\n\r\n \/* ===== Danger Grid ===== *\/\r\n .iran-article .danger-grid {\r\n display: grid;\r\n grid-template-columns: 1fr 1fr 1fr;\r\n gap: 10px;\r\n margin: 14px 0;\r\n }\r\n\r\n .iran-article .danger-grid div {\r\n background: #fef2f2;\r\n padding: 8px 12px;\r\n border-radius: 10px;\r\n text-align: center;\r\n font-weight: 600;\r\n font-size: 0.9rem;\r\n }\r\n\r\n \/* ===== Scroll ===== *\/\r\n html {\r\n scroll-behavior: smooth;\r\n }\r\n\r\n \/* ===== Responsive ===== *\/\r\n @media (max-width: 768px) {\r\n .iran-article {\r\n padding: 18px 14px;\r\n border-radius: 20px;\r\n }\r\n\r\n .iran-article .header h1 {\r\n font-size: 1.6rem;\r\n }\r\n\r\n .iran-article h2 {\r\n font-size: 1.3rem;\r\n padding-left: 10px;\r\n }\r\n\r\n .iran-article .metal-grid {\r\n grid-template-columns: 1fr;\r\n }\r\n\r\n .iran-article .danger-grid {\r\n grid-template-columns: 1fr 1fr;\r\n }\r\n\r\n .iran-article .iran-banner {\r\n padding: 16px 12px;\r\n }\r\n\r\n .iran-article .iran-banner .feature-list {\r\n flex-direction: column;\r\n align-items: center;\r\n }\r\n\r\n .iran-article .diag-card {\r\n padding: 12px 14px;\r\n }\r\n\r\n .iran-article .toc {\r\n padding: 12px 16px;\r\n }\r\n\r\n .iran-article .toc-grid {\r\n gap: 4px 10px;\r\n }\r\n\r\n .iran-article .toc-grid a {\r\n font-size: 0.8rem;\r\n }\r\n\r\n .iran-article .btn {\r\n padding: 8px 22px;\r\n font-size: 0.85rem;\r\n }\r\n }\r\n\r\n @media (max-width: 480px) {\r\n .iran-article {\r\n padding: 12px 8px;\r\n border-radius: 16px;\r\n }\r\n\r\n .iran-article .header h1 {\r\n font-size: 1.3rem;\r\n }\r\n\r\n .iran-article .danger-grid {\r\n grid-template-columns: 1fr;\r\n }\r\n\r\n .iran-article .toc-grid {\r\n flex-direction: column;\r\n gap: 2px;\r\n }\r\n }\r\n <\/style>\r\n<\/head>\r\n<body>\r\n\r\n<!-- ===== \u0627\u06cc\u0631\u0627\u0646 \u0622\u0631\u062a\u06cc\u06a9\u0644 ===== -->\r\n<div class=\"iran-article\">\r\n\r\n <!-- ===== HEADER ===== -->\r\n <div class=\"header\">\r\n <span class=\"badge\"><i class=\"fas fa-industry\"><\/i> Welding Fittings Reference<\/span>\r\n <h1><i class=\"fas fa-exclamation-triangle\"><\/i> How to Detect Fake or Low-Quality Welding Fittings?<\/h1>\r\n <p class=\"sub\">Comprehensive technical guide to identifying standard fittings from substandard products<\/p>\r\n <\/div>\r\n\r\n <!-- ===== TABLE OF CONTENTS ===== -->\r\n <div class=\"toc\">\r\n <h3><i class=\"fas fa-list-ul\"><\/i> Table of Contents<\/h3>\r\n <div class=\"toc-grid\">\r\n <a href=\"#risks\"><i class=\"fas fa-circle\"><\/i> Risks<\/a>\r\n <a href=\"#standards\"><i class=\"fas fa-circle\"><\/i> Standards<\/a>\r\n <a href=\"#metallurgy\"><i class=\"fas fa-circle\"><\/i> Metallurgy<\/a>\r\n <a href=\"#methods\"><i class=\"fas fa-circle\"><\/i> 10 Detection Methods<\/a>\r\n <a href=\"#quality\"><i class=\"fas fa-circle\"><\/i> Quality Control<\/a>\r\n <a href=\"#marking\"><i class=\"fas fa-circle\"><\/i> Standard Marking<\/a>\r\n <a href=\"#comparison\"><i class=\"fas fa-circle\"><\/i> Comparison<\/a>\r\n <a href=\"#checklist\"><i class=\"fas fa-circle\"><\/i> Checklist<\/a>\r\n <a href=\"#iran\"><i class=\"fas fa-circle\"><\/i> Iran Etessal<\/a>\r\n <a href=\"#summary\"><i class=\"fas fa-circle\"><\/i> Summary<\/a>\r\n <\/div>\r\n <\/div>\r\n\r\n <!-- ===== INTRODUCTION ===== -->\r\n <p>\r\n The market for welded steel fittings has faced an influx of cheap, low-quality products in recent years. Many of these products look similar to standard ones but can cause <strong>leaks, cracks, failures, and financial or human losses<\/strong> in industrial projects, gas and oil pipelines, petrochemical plants, and even building installations.\r\n <\/p>\r\n <p>\r\n In this article, we review the <strong>most important methods for detecting standard welding fittings<\/strong> from fake or low-quality ones.\r\n <\/p>\r\n\r\n <!-- ===== RISKS ===== -->\r\n <h2 id=\"risks\"><i class=\"fas fa-skull-crosswalk\" style=\"color:#b91c1c;\"><\/i> Why Are Low-Quality Fittings Dangerous?<\/h2>\r\n <p>In welded fittings, the entire system pressure passes through the joint. If material quality or manufacturing process is not adequate, the following issues may arise:<\/p>\r\n\r\n <div class=\"danger-grid\">\r\n <div>\ud83d\udd34 Cracks in weld area<\/div>\r\n <div>\ud83d\udd34 Fluid leakage<\/div>\r\n <div>\ud83d\udd34 Reduced pipeline lifespan<\/div>\r\n <div>\ud83d\udd34 Premature corrosion<\/div>\r\n <div>\ud83d\udd34 Failure under pressure<\/div>\r\n <div>\ud83d\udd34 Increased repair costs<\/div>\r\n <\/div>\r\n\r\n <div class=\"alert-box danger\">\r\n <i class=\"fas fa-exclamation-triangle\"><\/i>\r\n <strong>Warning!<\/strong> The cost of failure from a non-standard fitting in industrial projects is many times higher than the initial price difference.\r\n <\/div>\r\n\r\n <!-- ===== STANDARDS ===== -->\r\n <h2 id=\"standards\"><i class=\"fas fa-book\" style=\"color:#b91c1c;\"><\/i> Technical Standards for Welding Fittings<\/h2>\r\n <p>Quality steel fittings must comply with one of the following recognized standards:<\/p>\r\n\r\n <div class=\"table-wrap\">\r\n <table>\r\n <thead>\r\n <tr>\r\n <th>Standard<\/th>\r\n <th>Title<\/th>\r\n <th>Application<\/th>\r\n <\/tr>\r\n <\/thead>\r\n <tbody>\r\n <tr>\r\n <td><strong>ASTM A234<\/strong><\/td>\r\n <td>Alloy and Carbon Steel Fittings<\/td>\r\n <td>High temperature and pressure<\/td>\r\n <\/tr>\r\n <tr>\r\n <td><strong>ASME B16.9<\/strong><\/td>\r\n <td>Dimensions of Welded Fittings<\/td>\r\n <td>Dimensional control and tolerances<\/td>\r\n <\/tr>\r\n <tr>\r\n <td><strong>DIN 2605 \/ 2615<\/strong><\/td>\r\n <td>Elbows and Reducers (German)<\/td>\r\n <td>High precision and excellent quality<\/td>\r\n <\/tr>\r\n <tr>\r\n <td><strong>BS 1640<\/strong><\/td>\r\n <td>Steel Fittings (British)<\/td>\r\n <td>General industrial applications<\/td>\r\n <\/tr>\r\n <tr>\r\n <td><strong>ISO 9001<\/strong><\/td>\r\n <td>Quality Management System<\/td>\r\n <td>Quality assurance in production<\/td>\r\n <\/tr>\r\n <\/tbody>\r\n <\/table>\r\n <\/div>\r\n\r\n <div class=\"alert-box info\">\r\n <i class=\"fas fa-info-circle\"><\/i>\r\n <strong>Technical Note:<\/strong> Standard fittings have <span class=\"highlight\">engraved markings<\/span> on the body, including the standard number, size, schedule (SCH), and material grade.\r\n <\/div>\r\n\r\n <!-- ===== METALLURGY ===== -->\r\n <h2 id=\"metallurgy\"><i class=\"fas fa-flask\" style=\"color:#b91c1c;\"><\/i> Material and Metallurgy Inspection<\/h2>\r\n <p>Fitting quality directly depends on <strong>steel grade<\/strong> and its manufacturing process:<\/p>\r\n\r\n <div class=\"metal-grid\">\r\n <div class=\"metal-card\">\r\n <i class=\"fas fa-atom\"><\/i>\r\n <h4>Carbon Steel<\/h4>\r\n <p>Grades <strong>ST37, ST52, A106<\/strong> with controlled carbon percentage<\/p>\r\n <\/div>\r\n <div class=\"metal-card\">\r\n <i class=\"fas fa-microscope\"><\/i>\r\n <h4>Alloy Steel<\/h4>\r\n <p>Grades <strong>WP5, WP9, WP11<\/strong> resistant to high temperatures and corrosion<\/p>\r\n <\/div>\r\n <div class=\"metal-card\">\r\n <i class=\"fas fa-tint\"><\/i>\r\n <h4>Heat Treatment<\/h4>\r\n <p>Annealing or normalizing to reduce internal stress<\/p>\r\n <\/div>\r\n <div class=\"metal-card\">\r\n <i class=\"fas fa-weight-scale\"><\/i>\r\n <h4>Specific Weight<\/h4>\r\n <p>Standard fittings have a specific weight; low-quality products are usually <strong>lighter<\/strong><\/p>\r\n <\/div>\r\n <\/div>\r\n\r\n <!-- ===== 10 DETECTION METHODS ===== -->\r\n <h2 id=\"methods\"><i class=\"fas fa-microscope\" style=\"color:#b91c1c;\"><\/i> 10 Key Methods to Detect Standard Fittings<\/h2>\r\n\r\n <div class=\"diag-card\">\r\n <span class=\"num\">1<\/span> <i class=\"fas fa-tag\"><\/i>\r\n <h4>Check the Marking<\/h4>\r\n <p>Engraved information on the body should include:<\/p>\r\n <ul>\r\n <li>Manufacturer name or brand<\/li>\r\n <li>Size (e.g., 6\")<\/li>\r\n <li>Schedule (SCH40, SCH80)<\/li>\r\n <li>Manufacturing standard (ASTM A234, ASME B16.9)<\/li>\r\n <li>Material grade (WPB, WPC, ST37)<\/li>\r\n <li>Heat Number<\/li>\r\n <\/ul>\r\n <div class=\"code-sample\">\r\n IRAN ETESAL<br \/>\r\n ASTM A234 WPB<br \/>\r\n ASME B16.9<br \/>\r\n 6\" SCH40<br \/>\r\n Heat No. 2407-12\r\n <\/div>\r\n <div class=\"alert-box danger\" style=\"margin-top:8px;\">\r\n <i class=\"fas fa-times-circle\"><\/i>\r\n If markings are <strong>faint, printed (removable), or incomplete<\/strong>, the product is likely non-standard.\r\n <\/div>\r\n <\/div>\r\n\r\n <div class=\"diag-card\">\r\n <span class=\"num\">2<\/span> <i class=\"fas fa-ruler\"><\/i>\r\n <h4>Measure Actual Thickness<\/h4>\r\n <p>A product might be sold as SCH40 but have a lower wall thickness than standard.<\/p>\r\n <p><strong>Tools:<\/strong> Caliper, Micrometer<\/p>\r\n <p>Compare thickness with <strong>ASME B36.10<\/strong> or <strong>B36.19<\/strong> standard tables.<\/p>\r\n <\/div>\r\n\r\n <div class=\"diag-card\">\r\n <span class=\"num\">3<\/span> <i class=\"fas fa-weight-scale\"><\/i>\r\n <h4>Check Fitting Weight<\/h4>\r\n <p>Standard fittings have a specific weight. Cheaper products usually have less thickness and lower weight.<\/p>\r\n <p>If you place two identical elbows side by side, the standard one will typically be <strong>heavier<\/strong>.<\/p>\r\n <\/div>\r\n\r\n <div class=\"diag-card\">\r\n <span class=\"num\">4<\/span> <i class=\"fas fa-eye\"><\/i>\r\n <h4>Inspect Surface Quality<\/h4>\r\n <p>A standard fitting should have:<\/p>\r\n <ul>\r\n <li>\u2705 Uniform surface<\/li>\r\n <li>\u2705 No cracks<\/li>\r\n <li>\u2705 No porosity<\/li>\r\n <li>\u2705 No scaling<\/li>\r\n <li>\u2705 No cavities<\/li>\r\n <\/ul>\r\n <div class=\"alert-box danger\" style=\"margin-top:8px;\">\r\n <i class=\"fas fa-exclamation-circle\"><\/i>\r\n Presence of <strong>fine cracks, cavities, excessive oxide scale, or very rough surface<\/strong> indicates poor manufacturing.\r\n <\/div>\r\n <\/div>\r\n\r\n <div class=\"diag-card\">\r\n <span class=\"num\">5<\/span> <i class=\"fas fa-arrows-left-right\"><\/i>\r\n <h4>Check Thickness Uniformity<\/h4>\r\n <p>In low-quality products, thickness varies at different points. For example, one side of an elbow may be thick while the other is thin.<\/p>\r\n <p>This creates issues during welding and causes <strong>localized stress<\/strong>.<\/p>\r\n <\/div>\r\n\r\n <div class=\"diag-card\">\r\n <span class=\"num\">6<\/span> <i class=\"fas fa-cut\"><\/i>\r\n <h4>Inspect Bevel Quality<\/h4>\r\n <p>The bevel at the end of the fitting must be completely uniform. If:<\/p>\r\n <ul>\r\n <li>Bevel angle is irregular<\/li>\r\n <li>Edge is wavy<\/li>\r\n <li>Bevel is incomplete<\/li>\r\n <\/ul>\r\n <p>The welder will need to rework it, increasing time and cost.<\/p>\r\n <\/div>\r\n\r\n <div class=\"diag-card\">\r\n <span class=\"num\">7<\/span> <i class=\"fas fa-vector-square\"><\/i>\r\n <h4>Check Dimensions<\/h4>\r\n <p>Standard fittings must comply with dimensional standards. Key items:<\/p>\r\n <ul>\r\n <li>Outside Diameter (OD)<\/li>\r\n <li>Inside Diameter (ID)<\/li>\r\n <li>Center to End radius<\/li>\r\n <li>Center to End length<\/li>\r\n <\/ul>\r\n <p>Any deviation will cause assembly problems.<\/p>\r\n <\/div>\r\n\r\n <div class=\"diag-card\">\r\n <span class=\"num\">8<\/span> <i class=\"fas fa-file-certificate\"><\/i>\r\n <h4>Request Material Test Certificate (MTC)<\/h4>\r\n <p>For reputable industrial projects, the following documents must be provided:<\/p>\r\n <ul>\r\n <li><strong>Material Test Certificate (MTC)<\/strong><\/li>\r\n <li><strong>Certificate of Conformity (COC)<\/strong><\/li>\r\n <\/ul>\r\n <p>These documents specify: chemical composition, mechanical properties, melt number, production standard.<\/p>\r\n <div class=\"alert-box danger\" style=\"margin-top:8px;\">\r\n <i class=\"fas fa-exclamation-triangle\"><\/i>\r\n If the supplier provides no documents, <strong>be extra cautious when purchasing<\/strong>.\r\n <\/div>\r\n <\/div>\r\n\r\n <div class=\"diag-card\">\r\n <span class=\"num\">9<\/span> <i class=\"fas fa-coins\"><\/i>\r\n <h4>Take Unusual Prices Seriously<\/h4>\r\n <p>If a product is priced significantly below market rates, one of these reasons likely applies:<\/p>\r\n <ul>\r\n <li>Lower thickness<\/li>\r\n <li>Inferior material<\/li>\r\n <li>Non-standard production<\/li>\r\n <li>No quality control<\/li>\r\n <\/ul>\r\n <p><span class=\"highlight\">In industry, the cheapest option is not always the most economical choice.<\/span><\/p>\r\n <\/div>\r\n\r\n <div class=\"diag-card\">\r\n <span class=\"num\">10<\/span> <i class=\"fas fa-building\"><\/i>\r\n <h4>Choose a Reliable Manufacturer<\/h4>\r\n <p>One of the safest approaches is to buy from manufacturers who:<\/p>\r\n <ul>\r\n <li>Have a proven production history<\/li>\r\n <li>Provide standard markings on their products<\/li>\r\n <li>Perform quality control<\/li>\r\n <li>Offer product traceability<\/li>\r\n <li>Provide technical documents<\/li>\r\n <\/ul>\r\n <\/div>\r\n\r\n <!-- ===== QUALITY CONTROL ===== -->\r\n <h2 id=\"quality\"><i class=\"fas fa-clipboard-check\" style=\"color:#b91c1c;\"><\/i> Quality Control and Technical Tests<\/h2>\r\n\r\n <h3>\ud83d\udd2c Non-Destructive Testing (NDT)<\/h3>\r\n <ul>\r\n <li><strong>Radiography (X-Ray)<\/strong> \u2013 Detects internal bubbles and cracks<\/li>\r\n <li><strong>Ultrasonic Testing<\/strong> \u2013 Measures thickness and defects<\/li>\r\n <li><strong>Penetrant Testing (PT)<\/strong> \u2013 Detects surface cracks<\/li>\r\n <li><strong>Hydrostatic Pressure Test<\/strong> \u2013 Verifies working pressure capacity<\/li>\r\n <\/ul>\r\n\r\n <h3>\ud83d\udccb Quality Control Documents<\/h3>\r\n <p>Each standard shipment must include a <strong>Mill Test Certificate<\/strong> containing:<\/p>\r\n <ul>\r\n <li>Exact chemical composition<\/li>\r\n <li>Mechanical properties (yield strength, elongation)<\/li>\r\n <li>NDT results<\/li>\r\n <li>Quality control officer signature<\/li>\r\n <\/ul>\r\n\r\n <!-- ===== STANDARD MARKING ===== -->\r\n <h2 id=\"marking\"><i class=\"fas fa-tag\" style=\"color:#b91c1c;\"><\/i> Standard Marking on Fittings<\/h2>\r\n <p>Standard fittings have <strong>engraved or embossed markings<\/strong> on the body:<\/p>\r\n\r\n <div class=\"code-sample\" style=\"background:#0b1a2e; color:#e2e8f0; padding:12px 16px; border-radius:10px; font-family:monospace; overflow-x:auto; margin:12px 0; font-size:0.85rem; direction:ltr; text-align:left;\">\r\n IRAN ETESAL<br \/>\r\n ASTM A234 WPB<br \/>\r\n ASME B16.9<br \/>\r\n 6\" SCH40<br \/>\r\n Heat No. 2407-12\r\n <\/div>\r\n\r\n <ul>\r\n <li><strong>Standard type:<\/strong> ASTM \/ DIN \/ BS<\/li>\r\n <li><strong>Material grade:<\/strong> WPB, WPC, ST37, ST52<\/li>\r\n <li><strong>Nominal size:<\/strong> in inches or millimeters<\/li>\r\n <li><strong>Pressure class:<\/strong> SCH 40, SCH 80, 150#, 300#<\/li>\r\n <li><strong>Brand:<\/strong> Reputable manufacturer name<\/li>\r\n <\/ul>\r\n\r\n <div class=\"alert-box success\">\r\n <i class=\"fas fa-check-circle\"><\/i>\r\n <strong>Golden Rule:<\/strong> Always look for <span class=\"highlight\">engraved standard markings<\/span> on fittings. No marking = no quality.\r\n <\/div>\r\n\r\n <!-- ===== COMPARISON TABLE ===== -->\r\n <h2 id=\"comparison\"><i class=\"fas fa-table\" style=\"color:#b91c1c;\"><\/i> Standard vs Fake Fitting Comparison<\/h2>\r\n\r\n <div class=\"table-wrap\">\r\n <table>\r\n <thead>\r\n <tr>\r\n <th>Feature<\/th>\r\n <th>Standard Fitting \u2705<\/th>\r\n <th>Fake\/Low-Quality Fitting \u274c<\/th>\r\n <\/tr>\r\n <\/thead>\r\n <tbody>\r\n <tr>\r\n <td><strong>Marking<\/strong><\/td>\r\n <td>Engraved, complete, legible<\/td>\r\n <td>Printed, faint, incomplete<\/td>\r\n <\/tr>\r\n <tr>\r\n <td><strong>Thickness<\/strong><\/td>\r\n <td>Matches SCH standard<\/td>\r\n <td>Thinner than standard<\/td>\r\n <\/tr>\r\n <tr>\r\n <td><strong>Weight<\/strong><\/td>\r\n <td>Matches weight table<\/td>\r\n <td>Lighter than normal<\/td>\r\n <\/tr>\r\n <tr>\r\n <td><strong>Surface Quality<\/strong><\/td>\r\n <td>Smooth, no cracks or cavities<\/td>\r\n <td>Rough, with scale and cavities<\/td>\r\n <\/tr>\r\n <tr>\r\n <td><strong>Bevel<\/strong><\/td>\r\n <td>Uniform, precise angle<\/td>\r\n <td>Irregular, wavy<\/td>\r\n <\/tr>\r\n <tr>\r\n <td><strong>Technical Documents<\/strong><\/td>\r\n <td>Includes MTC and COC<\/td>\r\n <td>No documents provided<\/td>\r\n <\/tr>\r\n <tr>\r\n <td><strong>Material Grade<\/strong><\/td>\r\n <td>Controlled chemical composition<\/td>\r\n <td>Poor quality, unknown composition<\/td>\r\n <\/tr>\r\n <\/tbody>\r\n <\/table>\r\n <\/div>\r\n\r\n <!-- ===== CHECKLIST ===== -->\r\n <h2 id=\"checklist\"><i class=\"fas fa-clipboard-list\" style=\"color:#b91c1c;\"><\/i> Quick Purchase Checklist<\/h2>\r\n\r\n <div class=\"checklist\">\r\n <ul>\r\n <li>\u2705 Complete, engraved marking<\/li>\r\n <li>\u2705 Thickness compliant with standard<\/li>\r\n <li>\u2705 Appropriate weight<\/li>\r\n <li>\u2705 Excellent surface quality<\/li>\r\n <li>\u2705 Uniform bevel<\/li>\r\n <li>\u2705 Standard dimensions<\/li>\r\n <li>\u2705 MTC certificate<\/li>\r\n <li>\u2705 Reputable brand<\/li>\r\n <li>\u2705 Standard marking present<\/li>\r\n <li>\u2705 Reasonable price (not too cheap)<\/li>\r\n <\/ul>\r\n <\/div>\r\n\r\n <!-- ===== IRAN ETESAL ===== -->\r\n <div class=\"iran-banner\" id=\"iran\">\r\n <h2><i class=\"fas fa-flag\"><\/i> Iran Etessal: Leading Manufacturer<\/h2>\r\n <p>\r\n <strong>Iran Etessal<\/strong> with over two decades of experience, manufactures all products according to <span class=\"gold\">ASTM A234 and ASME B16.9 standards<\/span>.\r\n <\/p>\r\n <div class=\"feature-list\">\r\n <span>\u2705 High-quality controlled steel<\/span>\r\n <span>\u2705 Multi-stage quality control<\/span>\r\n <span>\u2705 Engraved standard marking<\/span>\r\n <span>\u2705 MTC certificate included<\/span>\r\n <span>\u2705 Standard organization approval<\/span>\r\n <span>\u2705 Heat Number for traceability<\/span>\r\n <\/div>\r\n <p style=\"font-size:1rem; color:#fbbf24; font-weight:700; margin:8px 0;\">\r\n <i class=\"fas fa-trophy\"><\/i> Identify quality by standard markings\r\n <\/p>\r\n <br \/>\r\n <a href=\"https:\/\/iranetesal.com\/en\/international\/\" target=\"_blank\" class=\"btn\">\r\n <i class=\"fas fa-shopping-cart\"><\/i> View & Purchase Products\r\n <\/a>\r\n <a href=\"https:\/\/iranetesal.com\/multi-products\/product-list-multi.php\" target=\"_blank\" class=\"btn btn-outline\" style=\"margin-left:8px;\">\r\n <i class=\"fas fa-list\"><\/i> Price & Size List\r\n <\/a>\r\n <\/div>\r\n\r\n <!-- ===== SUMMARY ===== -->\r\n <h2 id=\"summary\"><i class=\"fas fa-flag-checkered\" style=\"color:#b91c1c;\"><\/i> Final Summary<\/h2>\r\n <p>\r\n Detecting standard welded fittings is not possible by appearance alone. Checking <strong>marking, thickness, weight, surface quality, dimensions, bevel, material certificates, technical standards, and manufacturer credibility<\/strong> are the most important factors that can prevent purchasing fake or low-quality products.\r\n <\/p>\r\n\r\n <div class=\"alert-box success\">\r\n <i class=\"fas fa-check-circle\"><\/i>\r\n <strong>Golden Rule:<\/strong> In industrial projects, the cost of failure from a non-standard fitting is many times higher than the initial price difference. Therefore, choosing <span class=\"highlight\">standard products and reliable manufacturers<\/span> is an investment in <strong>safety, durability, and efficiency<\/strong> of the piping system.\r\n <\/div>\r\n\r\n <div style=\"text-align:center; margin-top:20px;\">\r\n <a href=\"https:\/\/iranetesal.com\/product-list.php\" target=\"_blank\" class=\"btn\">\r\n <i class=\"fas fa-link\"><\/i> View Iran Etessal Standard Products\r\n <\/a>\r\n <\/div>\r\n\r\n <!-- ===== FOOTER ===== -->\r\n <div class=\"footer\">\r\n <p>\r\n <i class=\"fas fa-shield-alt\" style=\"color:#b91c1c;\"><\/i>\r\n This article is prepared to enhance technical awareness in identifying standard fittings.\r\n <br \/>\r\n <span style=\"font-size:0.8rem;\">\r\n <i class=\"far fa-copyright\"><\/i> 2025 \u2013 All Rights Reserved.\r\n <\/span>\r\n <\/p>\r\n <\/div>\r\n\r\n<\/div>\r\n<!-- ===== \u067e\u0627\u06cc\u0627\u0646 iran-article ===== -->\r\n\r\n<script src=\"https:\/\/cdnjs.cloudflare.com\/ajax\/libs\/font-awesome\/6.0.0-beta3\/js\/all.min.js\"><\/script>\r\n<\/body>\r\n<\/html>\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<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>How to Detect Fake or Low-Quality Welding Fittings Welding Fittings Reference How to Detect Fake or Low-Quality Welding Fittings? Comprehensive<\/p>\n","protected":false},"author":6,"featured_media":35675,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[886],"tags":[],"class_list":["post-35674","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-selection-guides"],"featured_image_src":{"thumbnail":"https:\/\/iranetesal.com\/wp-content\/uploads\/2026\/07\/1212-150x150.webp","medium":"https:\/\/iranetesal.com\/wp-content\/uploads\/2026\/07\/1212-400x267.webp","medium_large":"https:\/\/iranetesal.com\/wp-content\/uploads\/2026\/07\/1212-768x512.webp","large":"https:\/\/iranetesal.com\/wp-content\/uploads\/2026\/07\/1212-1200x800.webp"},"_links":{"self":[{"href":"https:\/\/iranetesal.com\/en\/wp-json\/wp\/v2\/posts\/35674","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/iranetesal.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/iranetesal.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/iranetesal.com\/en\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/iranetesal.com\/en\/wp-json\/wp\/v2\/comments?post=35674"}],"version-history":[{"count":10,"href":"https:\/\/iranetesal.com\/en\/wp-json\/wp\/v2\/posts\/35674\/revisions"}],"predecessor-version":[{"id":36149,"href":"https:\/\/iranetesal.com\/en\/wp-json\/wp\/v2\/posts\/35674\/revisions\/36149"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/iranetesal.com\/en\/wp-json\/wp\/v2\/media\/35675"}],"wp:attachment":[{"href":"https:\/\/iranetesal.com\/en\/wp-json\/wp\/v2\/media?parent=35674"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/iranetesal.com\/en\/wp-json\/wp\/v2\/categories?post=35674"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/iranetesal.com\/en\/wp-json\/wp\/v2\/tags?post=35674"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}