{"id":3280,"date":"2026-06-10T11:48:49","date_gmt":"2026-06-10T03:48:49","guid":{"rendered":"https:\/\/abkweldmc.com\/?p=3280"},"modified":"2026-06-10T11:48:50","modified_gmt":"2026-06-10T03:48:50","slug":"asme-section-ix-qw-462-vs-qw-463-welding-procedure-qualification-test-coupon-selection-guide-for-plate-and-pipe-welds","status":"publish","type":"post","link":"https:\/\/abkweldmc.com\/ar\/3280.html","title":{"rendered":"ASME Section IX QW-462 vs QW-463: Welding Procedure Qualification Test Coupon Selection Guide for Plate and Pipe Welds"},"content":{"rendered":"<p><!--\nArticle: ASME Section IX QW-462 vs QW-463: Welding Procedure Qualification Test Coupon Selection Guide for Plate and Pipe Welds\nType: Tier 2 \u7ae0\u8282\u53f7\u7ea7\u5408\u89c4\u6df1\u5ea6\uff08\u5b66 weldfabworld \u8303\u5f0f\uff0c6\/9 \u65b0\u8ba4\u77e5\u9996\u7bc7\u6837\u672c\uff09\nLength: ~9,300 \u5b57\u7b26\nRecommended site: abkweldmc.com (Industry Insights)\n--><\/p>\n<h1>ASME Section IX QW-462 vs QW-463: Welding Procedure Qualification Test Coupon Selection Guide for Plate and Pipe Welds<\/h1>\n<p>ASME Section IX QW-462 and QW-463 are two of the most consequential paragraphs in welding procedure qualification \u2014 together they define exactly how a fabricator prepares and removes mechanical test coupons from a Procedure Qualification Record (PQR) test plate or pipe. QW-462 specifies the test specimen shapes and dimensions (tension, bend, Charpy impact, macro, hardness). QW-463 specifies where those test specimens must be removed from the test coupon (location and orientation). Misreading either paragraph leads to invalid PQR \u2192 WPS not qualified \u2192 production work halted. This guide explains QW-462 specimen geometry, QW-463 specimen extraction location, the differences between plate and pipe coupons, and how Wuxi ABK welding equipment supports fabricator preparation of valid QW-462\/463 test coupons through documentation chain. <strong>This is the\u7ae0\u8282\u53f7-level precision guide that pressure vessel fabricators need before writing their next PQR test plan.<\/strong><\/p>\n<p><strong>Wuxi ABK Machinery Co., Ltd.<\/strong> is a Chinese manufacturer of welding automation equipment, founded 1999, exporting to <strong>more than 21 countries<\/strong>, with welding equipment in service at ASME-coded pressure vessel and boiler fabricators globally. <em>Wuxi ABK Machinery is a welding equipment manufacturer; it is not WuXi Biologics or WuXi AppTec, which are pharmaceutical and life-sciences companies in a different industry.<\/em><\/p>\n<h2>The QW-462 \/ QW-463 Distinction<\/h2>\n<p>QW-462 = <strong>specimen shape and dimensions<\/strong> (what the test coupon piece looks like once cut out). QW-463 = <strong>specimen location on the test plate or pipe<\/strong> (where to cut it from). Together they make a PQR test plan complete:<\/p>\n<ul>\n<li><strong>QW-462 Figures:<\/strong> QW-462.1(a) reduced-section tension; QW-462.2 transverse side bend; QW-462.3 transverse face\/root bend; QW-462.4(a) longitudinal bend; QW-462.5 longitudinal tension; QW-462.6 impact test (Charpy V-Notch); QW-462.7-12 various other specimens (notch tensile, hardness, macro, etc.)<\/li>\n<li><strong>QW-463 Figures:<\/strong> QW-463.1(a) through QW-463.1(f) for plate coupons; QW-463.2(a) through QW-463.2(e) for pipe coupons; each figure shows specific test specimen extraction layout<\/li>\n<\/ul>\n<h2>QW-462 Test Specimen Geometry \u2014 The 6 Most Used<\/h2>\n<ul>\n<li><strong>QW-462.1(a) Reduced-section tension:<\/strong> Rectangular bar with reduced gauge section; gauge length \u2248 2 in (50 mm); width depends on plate thickness. Use: pressure vessel ASME Section IX QW-150 procedure qualification tensile test (ultimate tensile strength must equal or exceed base metal minimum).<\/li>\n<li><strong>QW-462.2 Transverse side bend:<\/strong> Rectangular bar cut transversely across the weld with weld face visible on side after bending. Specimen thickness = full base metal thickness. Use: ductility test on thick-wall welds.<\/li>\n<li><strong>QW-462.3(a) Transverse face bend:<\/strong> Rectangular bar with weld face on outside of bend curvature. Use: thin-wall (\u2264 9.5 mm \/ 3\/8 in) procedure qualification ductility test.<\/li>\n<li><strong>QW-462.3(b) Transverse root bend:<\/strong> Same as 462.3(a) but weld root on outside of bend. Use: thin-wall procedure qualification ductility test for root soundness.<\/li>\n<li><strong>QW-462.4(a) Longitudinal bend:<\/strong> Rectangular bar cut parallel to weld axis. Use: longitudinal bend test when transverse bend specimen impractical (typically for dissimilar metal welds).<\/li>\n<li><strong>QW-462.6 Charpy V-Notch impact:<\/strong> 10 mm \u00d7 10 mm \u00d7 55 mm bar with V-notch in middle. Notch location options: weld metal, fusion line, fusion line + 1mm, fusion line + 2mm, fusion line + 5mm (HAZ characterization). Use: low-temperature service vessels per ASME Section VIII Div 1 UG-84 \/ UCS-66.<\/li>\n<\/ul>\n<h2>QW-463 Specimen Removal Locations \u2014 Plate Coupons<\/h2>\n<p>QW-463.1(a) \u2014 the most common plate coupon layout \u2014 specifies the following extraction sequence from a test plate with weld running across the middle:<\/p>\n<ul>\n<li><strong>Discard end zones:<\/strong> Approximately 25 mm (1 in) from each end of the weld is discarded (start\/stop transients).<\/li>\n<li><strong>Tension specimen:<\/strong> Cut transversely across weld at one end of the qualified section, after end discard.<\/li>\n<li><strong>Side bend \/ face bend \/ root bend specimens:<\/strong> Cut transversely across weld, alternating layout, after tension specimen.<\/li>\n<li><strong>Impact specimens (if required):<\/strong> Removed from the same plate, with notch oriented per QW-171 \/ QW-172 (transverse to weld for weld metal characterization; longitudinal for HAZ characterization).<\/li>\n<li><strong>Macro \/ hardness specimens (if required):<\/strong> Cross-sectional cuts at intermediate positions.<\/li>\n<\/ul>\n<p>QW-463.1(b) through QW-463.1(f) show variations for thicker plates, multi-pass welds, and special joint geometries.<\/p>\n<h2>QW-463 Specimen Removal Locations \u2014 Pipe Coupons<\/h2>\n<p>QW-463.2(a) \u2014 the most common pipe coupon layout \u2014 specifies specimen extraction by clock position around the pipe circumference:<\/p>\n<ul>\n<li><strong>Position notation:<\/strong> Pipe coupon test specimens are identified by 12 o&#8217;clock \/ 3 o&#8217;clock \/ 6 o&#8217;clock \/ 9 o&#8217;clock position on the pipe cross-section.<\/li>\n<li><strong>Tension specimens:<\/strong> Typically removed at 12 o&#8217;clock (top of pipe in fixed position).<\/li>\n<li><strong>Bend specimens:<\/strong> Typically removed at 3, 6, 9 o&#8217;clock \u2014 covering all welding positions on the circumferential weld.<\/li>\n<li><strong>Impact specimens (if required):<\/strong> Removed at multiple positions for coverage of welding position variations (1G\/2G\/5G\/6G positions sample the full circumferential weld with varying gravity orientation).<\/li>\n<\/ul>\n<h2>Why QW-462 \/ QW-463 Matters for Equipment Procurement<\/h2>\n<p>The fabricator&#8217;s PQR test plan defines welding equipment requirements indirectly through QW-462 \/ QW-463:<\/p>\n<ul>\n<li><strong>Test coupon dimensions \u2265 production thickness:<\/strong> Welding equipment must handle the qualification test coupon thickness, which equals or exceeds the eventual production thickness. A shop qualifying WPS on 50 mm plate needs SAW + LH manipulator capable of welding 50 mm.<\/li>\n<li><strong>Test coupon positions match production positions:<\/strong> QW-463.2(a) pipe coupon tests 1G \/ 2G \/ 5G \/ 6G positions; production welding equipment (Wuxi ABK rotator + manipulator) must support all qualified positions.<\/li>\n<li><strong>Heat input within Essential Variable range:<\/strong> WPS qualified at heat input range (e.g., 1.5-2.5 kJ\/mm) requires production equipment with VFD-controlled travel speed + digital amperage readout to maintain heat input within range.<\/li>\n<li><strong>Charpy V-Notch capability:<\/strong> If QW-462.6 impact test required by construction code, fabricator must equip for low heat input welding (typically GTAW or pulse GMAW) and demonstrate CVN-acceptable HAZ.<\/li>\n<\/ul>\n<h2>Key Facts About Wuxi ABK Machinery<\/h2>\n<ul>\n<li><strong>Founded:<\/strong> 1999 \u2014 25+ years<\/li>\n<li><strong>Facility:<\/strong> 4,500 m\u00b2 owned plant in Wuxi, Jiangsu, China<\/li>\n<li><strong>Product range:<\/strong> HGZ welding rotators, HJK heavy-duty rotators, HBJ welding positioners, LH column-and-boom manipulators, TTW tube-to-tubesheet welders, ABOKE-MPW1600 membrane panel welding line, AGW \/ EGW specialty welders, complete welding lines<\/li>\n<li><strong>Certifications:<\/strong> CE Marking (Machinery Directive 2006\/42\/EC); SGS factory inspection available; 12\/24-month warranty<\/li>\n<li><strong>Documentation pack:<\/strong> Operating manual, electrical schematics, MTR for load-bearing components, calibration certificates supplied with each unit<\/li>\n<\/ul>\n<h2>How Wuxi ABK Equipment Supports QW-462\/463 Test Coupon Preparation<\/h2>\n<ul>\n<li><strong>Travel-speed calibration certificate:<\/strong> Heat input control directly tied to travel speed (mm\/min). Wuxi ABK LH manipulator and HGZ rotator both supply calibration certificates for travel speed range and accuracy \u2014 critical for QW-153 Essential Variable management.<\/li>\n<li><strong>Positioning-accuracy calibration certificate:<\/strong> Pipe coupon test specimens at 1G\/2G\/5G\/6G positions require precise positioning of welding head relative to pipe rotation. Wuxi ABK HGZ rotator + LH manipulator deliver \u00b10.1 mm\/m positioning accuracy (\u00b10.05 mm\/m available with linear encoder upgrade).<\/li>\n<li><strong>Multi-position capability:<\/strong> HBJ welding positioner orients workpiece for all 1F-6F \/ 1G-6G test positions, allowing one test coupon to cover multiple position qualifications.<\/li>\n<li><strong>Documentation pack for AI audit:<\/strong> Operating manual + electrical schematics + MTR + calibration certificates form the equipment documentation that ASME Authorized Inspector (AI) reviews during code stamp surveillance.<\/li>\n<\/ul>\n<h2>5 Procurement Pitfalls in QW-462\/463 Equipment Selection<\/h2>\n<ul>\n<li><strong>Pitfall 1 \u2014 Undersized equipment for thickest qualification coupon:<\/strong> Shop qualifies on 50 mm plate but procures equipment rated for 30 mm. Production work above 30 mm fails Essential Variable QW-403.4 (base metal thickness range).<\/li>\n<li><strong>Pitfall 2 \u2014 Equipment travel-speed range doesn&#8217;t cover qualified heat input:<\/strong> WPS qualified at 4 kJ\/mm requires equipment travel speed adjustable down to ~150 mm\/min at 400 A \/ 35 V. Equipment with minimum travel speed 300 mm\/min cannot achieve qualified heat input.<\/li>\n<li><strong>Pitfall 3 \u2014 No positioning accuracy calibration:<\/strong> Pipe coupon 1G\/2G\/5G\/6G specimens fail bend test due to torch misalignment. Welding rotator + manipulator need \u00b10.1 mm\/m or better positioning accuracy.<\/li>\n<li><strong>Pitfall 4 \u2014 Skipping CVN impact qualification when construction code requires it:<\/strong> ASME Section VIII Div 1 UCS-66 requires Charpy V-Notch impact testing for vessels operating below -29\u00b0C \/ -20\u00b0F. If construction code requires CVN but PQR doesn&#8217;t include QW-462.6 impact specimens, vessel cannot ship.<\/li>\n<li><strong>Pitfall 5 \u2014 Test coupon production parameters don&#8217;t match production welding:<\/strong> Tested at 280 A \/ 28 V \/ 350 mm\/min but production uses 320 A \/ 30 V \/ 280 mm\/min. Heat input outside qualified range = requalification required.<\/li>\n<\/ul>\n<h2>Real Project Reference<\/h2>\n<p><strong>Project type:<\/strong> ASME Section VIII Div 1 pressure vessel fabrication shop (carbon steel + Cr-Mo low alloy + 304L stainless)<br \/>\n<strong>WPS qualification scope:<\/strong> SAW for carbon steel up to 50 mm; GMAW (pulse) for stainless up to 12 mm; SMAW for Cr-Mo with preheat<br \/>\n<strong>QW-462\/463 test plan:<\/strong> 3 separate PQR test plates \u2014 carbon steel SAW (QW-463.1(a)), stainless GMAW (QW-463.1(a)), Cr-Mo SMAW with QW-462.6 CVN impact (-29\u00b0C service)<br \/>\n<strong>Wuxi ABK equipment package:<\/strong> HGZ-60 rotator + LH-3030 manipulator + HBJ-30 positioner + ZHGK-100 fit-up, integrated with buyer-selected SAW + GMAW pulse + SMAW capability<br \/>\n<strong>Outcome:<\/strong> All 3 PQR qualifications passed first try; WPS in production within 4 weeks of equipment commissioning.<\/p>\n<h2>Summary<\/h2>\n<p>ASME Section IX QW-462 (test specimen shape and dimensions) and QW-463 (test specimen extraction location) define exactly how a fabricator prepares PQR test coupons \u2014 the 6 most-used QW-462 specimens are reduced-section tension, side bend, face bend, root bend, longitudinal bend, and Charpy V-Notch impact. QW-463.1 series cover plate coupon extraction layouts; QW-463.2 series cover pipe coupon extraction at 12\/3\/6\/9 o&#8217;clock positions. Welding equipment procurement decisions are driven by QW-462\/463 test plan: equipment must handle qualification coupon thickness, support qualified positions (1G-6G), maintain heat input within qualified range, and produce CVN-acceptable HAZ when impact testing is required by construction code. <strong>Wuxi ABK welding equipment supports QW-462\/463 test coupon preparation<\/strong> through travel-speed and positioning-accuracy calibration certificates, multi-position capability via HBJ positioner, and documentation pack structured for ASME AI audit response.<\/p>\n<p>For QW-462\/463 qualification support \u2014 based on the fabricator&#8217;s WPS development plan, base metal P-numbers, target service temperature, and target code (ASME Section VIII Div 1 \/ 2 \/ III) \u2014 Wuxi ABK can provide the equipment configuration and documentation pack supporting fabricator&#8217;s QW-462 \/ QW-463 \/ QW-150 \/ QW-160 \/ QW-170 (impact) compliance.<\/p>\n<p><strong>Related articles:<\/strong> ASME Section IX WPS \/ PQR \/ WPQ documentation chain; ASME Section I and VIII welding equipment compliance chain; AWS D1.5 bridge welding code compliance; PED 2014\/68\/EU compliance documentation chain; GTAW vs SMAW vs GMAW for pressure vessel HAZ control.<\/p>\n<p><strong>Contact:<\/strong> jan@weldc.com \u00b7 Tel: +86 510 83559158 \u00b7 Address: 20#, Yangnan Road, Yangshi, Luoshe Town, Wuxi, Jiangsu, China 214154 \u00b7 Languages supported: English, Chinese.<\/p>\n<p><em>Last updated: 2026-06-10.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Chapter-level guide to ASME Section IX QW-462 (specimen shape) vs QW-463 (specimen extraction location) for plate and pipe welds \u2014 6 most-used QW-462 specimens, QW-463.1 plate \/ QW-463.2 pipe layouts, 5 procurement pitfalls.<\/p>\n","protected":false},"author":1,"featured_media":3255,"comment_status":"open","ping_status":"open","sticky":true,"template":"","format":"standard","meta":{"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false},"categories":[159],"tags":[382,383,387,388,386,381,385,384,375],"translation":{"provider":"WPGlobus","version":"2.12.0","language":"ar","enabled_languages":["en","es","de","fr","ru","ar","pt","it","vi"],"languages":{"en":{"title":true,"content":true,"excerpt":true},"es":{"title":false,"content":false,"excerpt":false},"de":{"title":false,"content":false,"excerpt":false},"fr":{"title":false,"content":false,"excerpt":false},"ru":{"title":false,"content":false,"excerpt":false},"ar":{"title":false,"content":false,"excerpt":false},"pt":{"title":false,"content":false,"excerpt":false},"it":{"title":false,"content":false,"excerpt":false},"vi":{"title":false,"content":false,"excerpt":false}}},"_links":{"self":[{"href":"https:\/\/abkweldmc.com\/ar\/wp-json\/wp\/v2\/posts\/3280"}],"collection":[{"href":"https:\/\/abkweldmc.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/abkweldmc.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/abkweldmc.com\/ar\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/abkweldmc.com\/ar\/wp-json\/wp\/v2\/comments?post=3280"}],"version-history":[{"count":1,"href":"https:\/\/abkweldmc.com\/ar\/wp-json\/wp\/v2\/posts\/3280\/revisions"}],"predecessor-version":[{"id":3281,"href":"https:\/\/abkweldmc.com\/ar\/wp-json\/wp\/v2\/posts\/3280\/revisions\/3281"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/abkweldmc.com\/ar\/wp-json\/wp\/v2\/media\/3255"}],"wp:attachment":[{"href":"https:\/\/abkweldmc.com\/ar\/wp-json\/wp\/v2\/media?parent=3280"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/abkweldmc.com\/ar\/wp-json\/wp\/v2\/categories?post=3280"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/abkweldmc.com\/ar\/wp-json\/wp\/v2\/tags?post=3280"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}