{"id":15789,"date":"2026-08-20T18:16:10","date_gmt":"2026-08-20T10:16:10","guid":{"rendered":"https:\/\/www.drillpipes.com\/how-is-%d0%b1%d1%83%d1%80%d0%b8%d0%bb%d1%8c%d0%bd%d0%b0%d1%8f-%d1%82%d1%80%d1%83%d0%b1%d0%b0-%d0%bf%d1%80%d0%be%d0%b8%d0%b7%d0%b2%d0%be%d0%b4%d1%81%d1%82%d0%b2%d0%bed\/"},"modified":"2026-09-18T16:06:43","modified_gmt":"2026-09-18T08:06:43","slug":"how-is-%d0%b1%d1%83%d1%80%d0%b8%d0%bb%d1%8c%d0%bd%d0%b0%d1%8f-%d1%82%d1%80%d1%83%d0%b1%d0%b0-%d0%bf%d1%80%d0%be%d0%b8%d0%b7%d0%b2%d0%be%d0%b4%d1%81%d1%82%d0%b2%d0%bed","status":"publish","type":"post","link":"https:\/\/www.drillpipes.com\/ru\/how-is-%d0%b1%d1%83%d1%80%d0%b8%d0%bb%d1%8c%d0%bd%d0%b0%d1%8f-%d1%82%d1%80%d1%83%d0%b1%d0%b0-%d0%bf%d1%80%d0%be%d0%b8%d0%b7%d0%b2%d0%be%d0%b4%d1%81%d1%82%d0%b2%d0%bed\/","title":{"rendered":"How Is \u0431\u0443\u0440\u0438\u043b\u044c\u043d\u0430\u044f \u0442\u0440\u0443\u0431\u0430 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0441\u0442\u0432\u043ed?"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u0431\u0443\u0440\u0438\u043b\u044c\u043d\u0430\u044f \u0442\u0440\u0443\u0431\u0430 manufacturing combines a heat-treated \u0431\u0435\u0441\u0448\u043e\u0432\u043d\u044b\u0439 \u0442\u0440\u0443\u0431\u0430 body with separately produced \u0437\u0430\u043c\u043a\u043e\u0432\u043e\u0435 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435s to form a complete load-bearing \u0431\u0443\u0440\u0438\u043b\u044c\u043d\u0430\u044f \u043a\u043e\u043b\u043e\u043d\u043d\u0430 component. The \u0442\u0440\u0443\u0431\u0430 ends are upset to iNCrease the local cross-section, while the \u0437\u0430\u043c\u043a\u043e\u0432\u043e\u0435 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435s are heat treated and machined with \u0448\u0435\u0439\u043a\u0430 and \u043c\u0430\u0442\u043a\u0430 rotary shouldered \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435s. The two parts are then joined by friction welding, followed by weld-zone \u0442\u0435\u0440\u043c\u043e\u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0430, \u0440\u0430\u0437\u043c\u0435\u0440al verIFication, nondestructive examination, and final traceability control before release.<\/p>\n\n<p class=\"wp-block-paragraph\">\u043d\u0435\u0444\u0442\u044cfield steel \u0431\u0443\u0440\u0438\u043b\u044c\u043d\u0430\u044f \u0442\u0440\u0443\u0431\u0430 for petroleum and natural-\u0433\u0430\u0437 \u0431\u0443\u0440\u0435\u043d\u0438\u0435 uses an upset \u0431\u0435\u0441\u0448\u043e\u0432\u043d\u044b\u0439 \u0442\u0440\u0443\u0431\u0430 body with separately \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0441\u0442\u0432\u043ed weld-on \u0437\u0430\u043c\u043a\u043e\u0432\u043e\u0435 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435s. This construction dIFfers from HDD \u0431\u0443\u0440 rods and DTH \u0431\u0443\u0440\u0438\u043b\u044c\u043d\u0430\u044f \u0442\u0440\u0443\u0431\u0430s, which may use dIFferent body designs and joining methods. For API\/ISO \u0431\u0443\u0440\u0438\u043b\u044c\u043d\u0430\u044f \u0442\u0440\u0443\u0431\u0430, the main manufacturing controls are the \u0442\u0440\u0443\u0431\u0430 body, upset ends, \u0437\u0430\u043c\u043a\u043e\u0432\u043e\u0435 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435s, friction-\u0441\u0432\u0430\u0440\u043d\u043e\u0439 interfaces, rotary shouldered \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435s, and final traceability. <\/p>\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-391a3d1a wp-block-columns-is-layout-flex\" style=\"margin-top:0;margin-bottom:0;padding-right:0;padding-left:0\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/www.drillpipes.com\/wp-content\/uploads\/2026\/08\/Finished-steel-drill-pipes-with-tool-joints-after-manufacturing-and-final-assembly-1024x576.png\" alt=\"\" class=\"wp-image-14421\" srcset=\"https:\/\/www.drillpipes.com\/wp-content\/uploads\/2026\/08\/Finished-steel-drill-pipes-with-tool-joints-after-manufacturing-and-final-assembly-1024x576.png 1024w, https:\/\/www.drillpipes.com\/wp-content\/uploads\/2026\/08\/Finished-steel-drill-pipes-with-tool-joints-after-manufacturing-and-final-assembly-300x169.png 300w, https:\/\/www.drillpipes.com\/wp-content\/uploads\/2026\/08\/Finished-steel-drill-pipes-with-tool-joints-after-manufacturing-and-final-assembly.png 1672w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-large is-resized has-custom-border\" style=\"margin-top:0;margin-right:0;margin-bottom:0;margin-left:0\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"589\" src=\"https:\/\/www.drillpipes.com\/wp-content\/uploads\/2026\/08\/Finished-drill-pipes-with-machined-box-tool-joints-prepared-for-inspection-and-final-release-e1787195929915-1024x589.png\" alt=\"\" class=\"wp-image-14422\" style=\"border-style:none;border-width:0px;aspect-ratio:1.7385699157419772;width:562px;height:auto\" srcset=\"https:\/\/www.drillpipes.com\/wp-content\/uploads\/2026\/08\/Finished-drill-pipes-with-machined-box-tool-joints-prepared-for-inspection-and-final-release-e1787195929915-1024x589.png 1024w, https:\/\/www.drillpipes.com\/wp-content\/uploads\/2026\/08\/Finished-drill-pipes-with-machined-box-tool-joints-prepared-for-inspection-and-final-release-e1787195929915-300x173.png 300w, https:\/\/www.drillpipes.com\/wp-content\/uploads\/2026\/08\/Finished-drill-pipes-with-machined-box-tool-joints-prepared-for-inspection-and-final-release-e1787195929915-768x442.png 768w, https:\/\/www.drillpipes.com\/wp-content\/uploads\/2026\/08\/Finished-drill-pipes-with-machined-box-tool-joints-prepared-for-inspection-and-final-release-e1787195929915-1536x884.png 1536w, https:\/\/www.drillpipes.com\/wp-content\/uploads\/2026\/08\/Finished-drill-pipes-with-machined-box-tool-joints-prepared-for-inspection-and-final-release-e1787195929915.png 1633w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n<\/div>\n\n<p class=\"wp-block-paragraph\">For buyers and \u0431\u0443\u0440\u0435\u043d\u0438\u0435 engineers, the important question is therefore not only which production steps are used. The more useful question is <strong>what each step controls<\/strong>: the \u0442\u0440\u0443\u0431\u0430-body strength, upset transition, tool-\u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 geometry, friction-weld zone, \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 accuracy, or final traceability.<\/p>\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"Drill Pipe Production Line\" width=\"950\" height=\"534\" src=\"https:\/\/www.youtube.com\/embed\/38Mb7Tom-DE?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n<h2 class=\"wp-block-heading\">\u0431\u0443\u0440\u0438\u043b\u044c\u043d\u0430\u044f \u0442\u0440\u0443\u0431\u0430 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0441\u0442\u0432\u0435\u043d\u043d\u044b\u0439 \u043f\u0440\u043e\u0446\u0435\u0441\u0441 at a GlaNCe<\/h2>\n\n<p class=\"wp-block-paragraph\">A practical way to understand <strong>\u0431\u0443\u0440\u0438\u043b\u044c\u043d\u0430\u044f \u0442\u0440\u0443\u0431\u0430 manufacturing<\/strong> is to separate it into two production routes.<\/p>\n\n<p class=\"wp-block-paragraph\">The first creates the <strong>\u0442\u0440\u0443\u0431\u0430 body<\/strong>. The second creates the <strong>\u0431\u0443\u0440\u0438\u043b\u044c\u043d\u0430\u044f \u0442\u0440\u0443\u0431\u0430 \u0437\u0430\u043c\u043a\u043e\u0432\u043e\u0435 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435<\/strong>. The two components meet during final assembly.<\/p>\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-center\" data-align=\"center\">Production Route<\/th><th>Main Manufacturing Operations<\/th><th>Main Control Objective<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-center\" data-align=\"center\">\u0442\u0440\u0443\u0431\u0430 body<\/td><td>\u0431\u0435\u0441\u0448\u043e\u0432\u043d\u044b\u0439 tube verIFication \u2192 upsetting \u2192 \u0442\u0435\u0440\u043c\u043e\u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0430 \u2192 straightening \u2192 \u0440\u0430\u0437\u043c\u0435\u0440al and NDT \u0438\u043d\u0441\u043f\u0435\u043a\u0446\u0438\u044f \u2192 weld-end preparation.<\/td><td>Mechanical properties, body geometry, upset transition and \u043c\u0430\u0442\u0435\u0440\u0438\u0430\u043b integrity.<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">\u0437\u0430\u043c\u043a\u043e\u0432\u043e\u0435 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435<\/td><td>\u043c\u0430\u0442\u0435\u0440\u0438\u0430\u043b preparation \u2192 \u0442\u0435\u0440\u043c\u043e\u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0430 \u2192 OD\/ID machining \u2192 shoulder machining \u2192 \u0448\u0435\u0439\u043a\u0430\/\u043c\u0430\u0442\u043a\u0430 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 machining \u2192 gauging.<\/td><td>\u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 strength, \u0440\u0430\u0437\u043c\u0435\u0440s and mating geometry.<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">Final assembly<\/td><td>Friction welding \u2192 flash removal \u2192 weld-zone \u0442\u0435\u0440\u043c\u043e\u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0430 \u2192 NDT \u2192 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 verIFication \u2192 marking and release.<\/td><td>Body-to-tool-\u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 integrity, alignment and complete traceability.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n<p class=\"wp-block-paragraph\">This two-route structure reflects the actual construction of API\/ISO steel \u0431\u0443\u0440\u0438\u043b\u044c\u043d\u0430\u044f \u0442\u0440\u0443\u0431\u0430. ISO 11961 \u0441\u043f\u0435\u0446\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u044fIFies steel \u0431\u0443\u0440\u0438\u043b\u044c\u043d\u0430\u044f \u0442\u0440\u0443\u0431\u0430 with <strong>upset \u0442\u0440\u0443\u0431\u0430-body ends and weld-on \u0437\u0430\u043c\u043a\u043e\u0432\u043e\u0435 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435s<\/strong>, while API also treats \u0431\u0443\u0440\u0438\u043b\u044c\u043d\u0430\u044f \u0442\u0440\u0443\u0431\u0430 bodies, \u0437\u0430\u043c\u043a\u043e\u0432\u043e\u0435 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435s, and completed \u0431\u0443\u0440\u0438\u043b\u044c\u043d\u0430\u044f \u0442\u0440\u0443\u0431\u0430 as distiNCt manufacturing elements within its certIFication framework. <\/p>\n\n<p class=\"wp-block-paragraph\">The exact equipment arrangement can dIFfer from one \u0441\u0442\u0430\u043d to another. For that reason, a professional description of the <strong>\u0431\u0443\u0440\u0438\u043b\u044c\u043d\u0430\u044f \u0442\u0440\u0443\u0431\u0430 production process<\/strong> should focus on controlled manufacturing results rather than claiming that every plant uses one identical machine sequeNCe.<\/p>\n\n<div data-wp-interactive=\"core\/file\" class=\"wp-block-file\"><object data-wp-bind--hidden=\"!state.hasPdfPreview\" hidden class=\"wp-block-file__embed\" data=\"https:\/\/www.drillpipes.com\/wp-content\/uploads\/2026\/08\/Drill_Pipe_Manufacturing_Route_Pipe_Body_Tool_Joint.pdf\" type=\"application\/pdf\" style=\"width:100%;height:600px\" aria-label=\"\u0412\u0441\u0442\u0430\u0432\u043a\u0430 Drill_Pipe_Manufacturing_Route_Pipe_Body_Tool_Joint\"><\/object><a id=\"wp-block-file--media-73dab89c-4684-4265-882d-de5efcaf5472\" href=\"https:\/\/www.drillpipes.com\/wp-content\/uploads\/2026\/08\/Drill_Pipe_Manufacturing_Route_Pipe_Body_Tool_Joint.pdf\">\u0431\u0443\u0440_\u0442\u0440\u0443\u0431\u0430_Manufacturing_Route_\u0442\u0440\u0443\u0431\u0430_Body_Tool_\u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435<\/a><a href=\"https:\/\/www.drillpipes.com\/wp-content\/uploads\/2026\/08\/Drill_Pipe_Manufacturing_Route_Pipe_Body_Tool_Joint.pdf\" class=\"wp-block-file__button wp-element-button\" download=\"\" aria-describedby=\"wp-block-file--media-73dab89c-4684-4265-882d-de5efcaf5472\">Download<\/a><\/div>\n\n<h2 class=\"wp-block-heading\">\u0442\u0440\u0443\u0431\u0430 Body Manufacturing: From \u0431\u0435\u0441\u0448\u043e\u0432\u043d\u044b\u0439 Tube to an Upset \u0431\u0443\u0440\u0438\u043b\u044c\u043d\u0430\u044f \u0442\u0440\u0443\u0431\u0430 Body<\/h2>\n\n<p class=\"wp-block-paragraph\">The \u0442\u0440\u0443\u0431\u0430 body forms the long load-carrying section of the \u0431\u0443\u0440\u0438\u043b\u044c\u043d\u0430\u044f \u043a\u043e\u043b\u043e\u043d\u043d\u0430. During \u0431\u0443\u0440\u0435\u043d\u0438\u0435 it is exposed to tension, \u043a\u0440\u0443\u0442\u044f\u0449\u0438\u0439 \u043c\u043e\u043c\u0435\u043d\u0442, internal fluid pressure, bending, and repeated cyclic loading. Its manufacturing route therefore has to control both \u043c\u0430\u0442\u0435\u0440\u0438\u0430\u043b properties and \u0440\u0430\u0437\u043c\u0435\u0440al stability.<\/p>\n\n<h3 class=\"wp-block-heading\">\u0431\u0435\u0441\u0448\u043e\u0432\u043d\u044b\u0439 Tube VerIFication Comes Before Forming<\/h3>\n\n<p class=\"wp-block-paragraph\">Production starts with a <a href=\"__PROTECTED_0__\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-secondary-color\">\u0431\u0435\u0441\u0448\u043e\u0432\u043d\u044b\u0439 steel tube<\/mark><\/a> selected for the required \u043a\u043b\u0430\u0441\u0441 and \u0440\u0430\u0437\u043c\u0435\u0440al configuration.<\/p>\n\n<p class=\"wp-block-paragraph\">Before the tube enters upsetting and \u0442\u0435\u0440\u043c\u043e\u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0430, the \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c needs to retain its \u043c\u0430\u0442\u0435\u0440\u0438\u0430\u043b identity and confirm that the starting condition corresponds to the production order. Important checks iNClude tube identIFication, heat or lot refereNCe, \u043d\u0430\u0440\u0443\u0436\u043d\u044b\u0439 \u0434\u0438\u0430\u043c\u0435\u0442\u0440, \u0442\u043e\u043b\u0449\u0438\u043d\u0430 \u0441\u0442\u0435\u043d\u043a\u0438, surface condition, and applicable \u043c\u0430\u0442\u0435\u0440\u0438\u0430\u043b documentation.<\/p>\n\n<p class=\"wp-block-paragraph\">\u043c\u0430\u0442\u0435\u0440\u0438\u0430\u043b traceability is maintained from the iNComing \u0431\u0435\u0441\u0448\u043e\u0432\u043d\u044b\u0439 tube through upsetting, \u0442\u0435\u0440\u043c\u043e\u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0430, straightening, welding, and final \u0438\u043d\u0441\u043f\u0435\u043a\u0446\u0438\u044f. Heat\/lot identIFication and \u0438\u043d\u0441\u043f\u0435\u043a\u0446\u0438\u044f records remain linked to the finished \u0431\u0443\u0440\u0438\u043b\u044c\u043d\u0430\u044f \u0442\u0440\u0443\u0431\u0430 so that mechanical-test and NDT results can be verIFied against the physical \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 during final release.<\/p>\n\n<h3 class=\"wp-block-heading\">\u0431\u0443\u0440\u0438\u043b\u044c\u043d\u0430\u044f \u0442\u0440\u0443\u0431\u0430 Upsetting Process<\/h3>\n\n<p class=\"wp-block-paragraph\">The <strong>\u0431\u0443\u0440\u0438\u043b\u044c\u043d\u0430\u044f \u0442\u0440\u0443\u0431\u0430 upsetting process<\/strong> modIFies the \u0442\u0440\u0443\u0431\u0430 ends before \u0437\u0430\u043c\u043a\u043e\u0432\u043e\u0435 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435s are attached.<\/p>\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"557\" src=\"https:\/\/www.drillpipes.com\/wp-content\/uploads\/2026\/08\/API-drill-pipe-manufacturing-process-with-separate-pipe-body-route-tool-joint-route-and-final-assembly-e1787131426655-1024x557.png\" alt=\"\" class=\"wp-image-14390\" srcset=\"https:\/\/www.drillpipes.com\/wp-content\/uploads\/2026\/08\/API-drill-pipe-manufacturing-process-with-separate-pipe-body-route-tool-joint-route-and-final-assembly-e1787131426655-1024x557.png 1024w, https:\/\/www.drillpipes.com\/wp-content\/uploads\/2026\/08\/API-drill-pipe-manufacturing-process-with-separate-pipe-body-route-tool-joint-route-and-final-assembly-e1787131426655-300x163.png 300w, https:\/\/www.drillpipes.com\/wp-content\/uploads\/2026\/08\/API-drill-pipe-manufacturing-process-with-separate-pipe-body-route-tool-joint-route-and-final-assembly-e1787131426655-768x418.png 768w, https:\/\/www.drillpipes.com\/wp-content\/uploads\/2026\/08\/API-drill-pipe-manufacturing-process-with-separate-pipe-body-route-tool-joint-route-and-final-assembly-e1787131426655-1536x836.png 1536w, https:\/\/www.drillpipes.com\/wp-content\/uploads\/2026\/08\/API-drill-pipe-manufacturing-process-with-separate-pipe-body-route-tool-joint-route-and-final-assembly-e1787131426655.png 1630w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n<p class=\"wp-block-paragraph\">A green tube normally has a relatively unIForm wall section. During upsetting, the end is heated and plastically formed so that the local section becomes shorter and thicker. This iNCreases the cross-sectional area available at the \u0442\u0440\u0443\u0431\u0430 end and creates the geometry needed for later \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 to the heavier \u0437\u0430\u043c\u043a\u043e\u0432\u043e\u0435 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435.<\/p>\n\n<p class=\"wp-block-paragraph\">After upsetting, the enlarged \u0442\u0440\u0443\u0431\u0430 end is prepared to provide the required geometry for weld-end machining and subsequent <a href=\"__PROTECTED_0__\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-secondary-color\">friction welding<\/mark><\/a> to the \u0437\u0430\u043c\u043a\u043e\u0432\u043e\u0435 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435.<\/p>\n\n<figure class=\"wp-block-video\"><video height=\"1440\" style=\"aspect-ratio: 2560 \/ 1440;\" width=\"2560\" controls=\"\" src=\"https:\/\/www.drillpipes.com\/wp-content\/uploads\/2026\/08\/Drill-Pipe-Pipe-End-Heating-and-Upsetting-Process-2.mp4\"><\/video><\/figure>\n\n<p class=\"wp-block-paragraph\">The engineering point is not simply that \u201ca thicker end is stronger.\u201d What matters is the transition between the normal \u0442\u0440\u0443\u0431\u0430 body and the enlarged end.A \u0441\u043a\u0432\u0430\u0436\u0438\u043d\u0430-controlled upset should avoid an unnecessarily abrupt change of section. The transition also needs to maintain suitable coNCentricity because this area eventually sits between the flexible \u0442\u0440\u0443\u0431\u0430 body and the much heavier \u0437\u0430\u043c\u043a\u043e\u0432\u043e\u0435 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435. Under rotating bending and tensile loading, poor transition geometry can iNCrease local stress coNCentration.<\/p>\n\n<p class=\"wp-block-paragraph\">Depending on the \u0441\u043f\u0435\u0446\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u044fIFied \u0431\u0443\u0440\u0438\u043b\u044c\u043d\u0430\u044f \u0442\u0440\u0443\u0431\u0430 design, upset configurations can iNClude internal upset, external upset, or internal-external upset. The actual upset type should be taken from the ordered \u0431\u0443\u0440\u0438\u043b\u044c\u043d\u0430\u044f \u0442\u0440\u0443\u0431\u0430 configuration rather than inferred from \u0442\u0440\u0443\u0431\u0430 \u0440\u0430\u0437\u043c\u0435\u0440 alone.<\/p>\n\n<h3 class=\"wp-block-heading\">\u0431\u0443\u0440\u0438\u043b\u044c\u043d\u0430\u044f \u0442\u0440\u0443\u0431\u0430 \u0442\u0435\u0440\u043c\u043e\u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0430<\/h3>\n\n<p class=\"wp-block-paragraph\">After upsetting, the \u0442\u0440\u0443\u0431\u0430 body is heat treated to achieve the mechanical properties required for the \u0441\u043f\u0435\u0446\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u044fIFied \u0431\u0443\u0440\u0438\u043b\u044c\u043d\u0430\u044f \u0442\u0440\u0443\u0431\u0430 \u043a\u043b\u0430\u0441\u0441. For queNChed-and-tempered \u0431\u0443\u0440\u0438\u043b\u044c\u043d\u0430\u044f \u0442\u0440\u0443\u0431\u0430, heating, \u0437\u0430\u043a\u0430\u043b\u043a\u0430, and \u043e\u0442\u043f\u0443\u0441\u043a are controlled as a continuous production sequeNCe. The finished condition is verIFied by the required mechanical-property and \u0442\u0432\u0435\u0440\u0434\u043e\u0441\u0442\u044c tests rather than by furnace para\u043c\u0435\u0442\u0440s alone.<\/p>\n\n<figure class=\"wp-block-video\"><video height=\"1440\" style=\"aspect-ratio: 2560 \/ 1440;\" width=\"2560\" controls=\"\" src=\"https:\/\/www.drillpipes.com\/wp-content\/uploads\/2026\/08\/Drill-Pipe-Upset-End-Hardness-Testing-2.mp4\"><\/video><\/figure>\n\n<p class=\"wp-block-paragraph\">After \u0442\u0435\u0440\u043c\u043e\u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0430, the \u0442\u0440\u0443\u0431\u0430 body is checked for mechanical properties, \u0442\u0432\u0435\u0440\u0434\u043e\u0441\u0442\u044c, \u0440\u0430\u0437\u043c\u0435\u0440s, and straightness before weld-end preparation. \u043a\u043b\u0430\u0441\u0441 requirements for E75, X95, G105, or S135 are verIFied against the applicable API 5DP \/ ISO 11961 requirements and the ordered product \u0441\u043f\u0435\u0446\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u044f.<\/p>\n\n<p class=\"wp-block-paragraph\">The <strong>friction-weld zone is heat treated separately later in production<\/strong>, after the \u0437\u0430\u043c\u043a\u043e\u0432\u043e\u0435 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 has been \u0441\u0432\u0430\u0440\u043d\u043e\u0439 to the upset \u0442\u0440\u0443\u0431\u0430 body and the weld flash has been removed. This local treatment controls the metallurgical condition of the \u0441\u0432\u0430\u0440\u043d\u043e\u0439 area before \u0442\u0432\u0435\u0440\u0434\u043e\u0441\u0442\u044c verIFication and NDT. \u0442\u0440\u0443\u0431\u0430-body \u0442\u0435\u0440\u043c\u043e\u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0430 and weld-zone \u0442\u0435\u0440\u043c\u043e\u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0430 are therefore recorded as separate manufacturing operations.<\/p>\n\n<h3 class=\"wp-block-heading\">Straightening and \u0440\u0430\u0437\u043c\u0435\u0440al Control<\/h3>\n\n<p class=\"wp-block-paragraph\">\u0442\u0435\u0440\u043c\u043e\u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0430 is followed by geometry control because mechanical properties alone do not produce an acceptable \u0431\u0443\u0440\u0438\u043b\u044c\u043d\u0430\u044f \u0442\u0440\u0443\u0431\u0430.<\/p>\n\n<p class=\"wp-block-paragraph\">The \u0442\u0440\u0443\u0431\u0430 body has to maintain the straightness and \u0440\u0430\u0437\u043c\u0435\u0440al condition required for later weld preparation and final assembly. OD, wall condition, straightness, upset geometry, and alignment all affect how accurately the \u0442\u0440\u0443\u0431\u0430 body can be joined to the \u0437\u0430\u043c\u043a\u043e\u0432\u043e\u0435 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435.<\/p>\n\n<p class=\"wp-block-paragraph\">This matters because the finished \u0431\u0443\u0440\u0438\u043b\u044c\u043d\u0430\u044f \u0442\u0440\u0443\u0431\u0430 forms one rotating load path. A strong \u0442\u0440\u0443\u0431\u0430 body with excessive runout or poor end coNCentricity can still create problems at the friction-weld transition.<\/p>\n\n<h3 class=\"wp-block-heading\">\u0442\u0440\u0443\u0431\u0430 Body and Upset-End \u0438\u043d\u0441\u043f\u0435\u043a\u0446\u0438\u044f<\/h3>\n\n<p class=\"wp-block-paragraph\">Nondestructive examination must match the geometry being in\u0441\u043f\u0435\u0446\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u044fted.<\/p>\n\n<p class=\"wp-block-paragraph\">The long constant-section body can be examined using suitable automated methods such as \u0443\u043b\u044c\u0442\u0440\u0430\u0437\u0432\u0443\u043a\u043e\u0432\u043e\u0439 or electromagnetic \u0438\u043d\u0441\u043f\u0435\u043a\u0446\u0438\u044f according to the applicable \u0441\u043f\u0435\u0446\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u044f and production plan. The upset end is more complicated because its \u0442\u043e\u043b\u0449\u0438\u043d\u0430 \u0441\u0442\u0435\u043d\u043a\u0438 and transition geometry dIFfer from the normal \u0442\u0440\u0443\u0431\u0430 body.<\/p>\n\n<p class=\"wp-block-paragraph\">For this reason, it is better to describe \u0438\u043d\u0441\u043f\u0435\u043a\u0446\u0438\u044f by <strong>controlled area<\/strong>:<\/p>\n\n<ul class=\"wp-block-list\">\n<li>normal \u0442\u0440\u0443\u0431\u0430 body;<\/li>\n\n\n\n<li>upset transition;<\/li>\n\n\n\n<li>end preparation area;<\/li>\n\n\n\n<li>later, the friction-weld zone.<\/li>\n<\/ul>\n\n<p class=\"wp-block-paragraph\">A statement such as \u201cthe \u0442\u0440\u0443\u0431\u0430 receives UT\u201d does not by itself explain whether all critical regions have actually been examined.<\/p>\n\n<h2 class=\"wp-block-heading\">\u0437\u0430\u043c\u043a\u043e\u0432\u043e\u0435 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 Manufacturing and \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 Preparation<\/h2>\n\n<p class=\"wp-block-paragraph\">The \u0437\u0430\u043c\u043a\u043e\u0432\u043e\u0435 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 should not be treated as a ready-made fitting that simply appears at the welding station.<\/p>\n\n<p class=\"wp-block-paragraph\">A <strong>\u0431\u0443\u0440\u0438\u043b\u044c\u043d\u0430\u044f \u0442\u0440\u0443\u0431\u0430 \u0437\u0430\u043c\u043a\u043e\u0432\u043e\u0435 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435<\/strong> is a separately \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0441\u0442\u0432\u043ed, heat-treated, and machined component. It provides the enlarged \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 section at each end of the \u0442\u0440\u0443\u0431\u0430 and carries the rotary shouldered \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 used to join one \u0431\u0443\u0440\u0438\u043b\u044c\u043d\u0430\u044f \u0442\u0440\u0443\u0431\u0430 to the next.<\/p>\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/www.drillpipes.com\/wp-content\/uploads\/2026\/08\/Drill-pipe-tool-joint-anatomy-showing-pin-connection-box-connection-shoulder-bore-and-weld-end-1024x576.png\" alt=\"\" class=\"wp-image-14405\" style=\"width:1094px;height:auto\" srcset=\"https:\/\/www.drillpipes.com\/wp-content\/uploads\/2026\/08\/Drill-pipe-tool-joint-anatomy-showing-pin-connection-box-connection-shoulder-bore-and-weld-end-1024x576.png 1024w, https:\/\/www.drillpipes.com\/wp-content\/uploads\/2026\/08\/Drill-pipe-tool-joint-anatomy-showing-pin-connection-box-connection-shoulder-bore-and-weld-end-300x169.png 300w, https:\/\/www.drillpipes.com\/wp-content\/uploads\/2026\/08\/Drill-pipe-tool-joint-anatomy-showing-pin-connection-box-connection-shoulder-bore-and-weld-end.png 1672w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n<ul class=\"wp-block-list\">\n<li><strong>Tool-Joint Material and Heat Treatment<\/strong><\/li>\n<\/ul>\n\n<p class=\"wp-block-paragraph\">Tool-\u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 manufacturing begins with its own controlled \u043c\u0430\u0442\u0435\u0440\u0438\u0430\u043b route.The \u0437\u0430\u043c\u043a\u043e\u0432\u043e\u0435 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 experieNCes a dIFferent stress and \u0438\u0437\u043d\u043e\u0441 condition from the main \u0442\u0440\u0443\u0431\u0430 body. Its larger section contains the \u0440\u0435\u0437\u044c\u0431\u0430ed \u0448\u0435\u0439\u043a\u0430 or \u043c\u0430\u0442\u043a\u0430 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435, shoulder, bore, and \u0438\u0437\u043d\u043e\u0441 surfaces. It therefore has its own \u043c\u0430\u0442\u0435\u0440\u0438\u0430\u043b, heat-treatment, \u0442\u0432\u0435\u0440\u0434\u043e\u0441\u0442\u044c, machining, and \u0438\u043d\u0441\u043f\u0435\u043a\u0446\u0438\u044f history before welding.<\/p>\n\n<p class=\"wp-block-paragraph\">Finished \u0431\u0443\u0440\u0438\u043b\u044c\u043d\u0430\u044f \u0442\u0440\u0443\u0431\u0430 acceptaNCe iNCludes separate verIFication of the \u0437\u0430\u043c\u043a\u043e\u0432\u043e\u0435 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 and rotary shouldered \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435. Tool-\u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 mechanical properties, \u0442\u0432\u0435\u0440\u0434\u043e\u0441\u0442\u044c, machined \u0440\u0430\u0437\u043c\u0435\u0440s, shoulder condition, and \u0448\u0435\u0439\u043a\u0430\/\u043c\u0430\u0442\u043a\u0430 gauging are checked independently from the \u0442\u0440\u0443\u0431\u0430-body \u043a\u043b\u0430\u0441\u0441 requirements.<\/p>\n\n<ul class=\"wp-block-list\">\n<li><strong>Tool-Joint Machining<\/strong><\/li>\n<\/ul>\n\n<p class=\"wp-block-paragraph\">After \u0442\u0435\u0440\u043c\u043e\u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0430, <strong>\u0437\u0430\u043c\u043a\u043e\u0432\u043e\u0435 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 machining<\/strong> establishes the \u0440\u0430\u0437\u043c\u0435\u0440s required for both \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 performaNCe and final welding.Important machined areas iNClude the outside profile, internal bore, \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 shoulder, \u0448\u0435\u0439\u043a\u0430 or \u043c\u0430\u0442\u043a\u0430 region, and weld end.<\/p>\n\n<p class=\"wp-block-paragraph\">The shoulder deserves particular attention. In a rotary shouldered \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435, the \u0440\u0435\u0437\u044c\u0431\u0430ed \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 and shoulder work together during make-up and \u043a\u0440\u0443\u0442\u044f\u0449\u0438\u0439 \u043c\u043e\u043c\u0435\u043d\u0442 transfer. A \u0440\u0435\u0437\u044c\u0431\u0430 can therefore be \u0440\u0430\u0437\u043c\u0435\u0440ally close to \u0441\u043f\u0435\u0446\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u044f while poor shoulder condition still prevents satis\u0437\u0430\u0432\u043e\u0434 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 performaNCe.The weld end also needs a controlled geometry so it can be aligned with the upset \u0442\u0440\u0443\u0431\u0430 body before friction welding.<\/p>\n\n<ul class=\"wp-block-list\">\n<li><strong>Pin and Box Connection Machining<\/strong><\/li>\n<\/ul>\n\n<p class=\"wp-block-paragraph\">The two ends of the finished \u0442\u0440\u0443\u0431\u0430 provide the \u0448\u0435\u0439\u043a\u0430 and \u043c\u0430\u0442\u043a\u0430 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 needed to build the \u0431\u0443\u0440\u0438\u043b\u044c\u043d\u0430\u044f \u043a\u043e\u043b\u043e\u043d\u043d\u0430.\u0440\u0435\u0437\u044c\u0431\u0430 machining must control more than the visible \u0440\u0435\u0437\u044c\u0431\u0430 form. \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 behavior also depends on taper, pitch-related geometry, shoulder condition, alignment, mating co\u041c\u041f\u0430tibility, and the actual \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 design.<\/p>\n\n<p class=\"wp-block-paragraph\">API \u0441\u043f\u0435\u0446\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u044f 7-2 \u0441\u043f\u0435\u0446\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u044fIFically covers <strong>\u043d\u0430\u0440\u0435\u0437\u0430\u043d\u0438\u0435 \u0440\u0435\u0437\u044c\u0431\u044b and gauging of rotary shouldered \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435s<\/strong>. API published Addendum 3 to the second edition in September 2025, so buyers \u0441\u043f\u0435\u0446\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u044fIFying API rotary shouldered \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435s should identIFy the applicable edition and project requirements rather than relying on the generic phrase \u201cAPI \u0440\u0435\u0437\u044c\u0431\u0430.\u201d <\/p>\n\n<p class=\"wp-block-paragraph\">That distiNCtion also helps keep \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442s correctly separated:<\/p>\n\n<p class=\"wp-block-paragraph\"><strong>API 5DP<\/strong> addresses drill pipe as a product.<\/p>\n\n<p class=\"wp-block-paragraph\"><strong>API 7-2<\/strong> addresses rotary shouldered connection threading and gauging.<\/p>\n\n<h2 class=\"wp-block-heading\">Final Assembly: \u0431\u0443\u0440\u0438\u043b\u044c\u043d\u0430\u044f \u0442\u0440\u0443\u0431\u0430 Friction Welding<\/h2>\n\n<p class=\"wp-block-paragraph\">The body and tool-\u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 routes meet during <strong>\u0431\u0443\u0440\u0438\u043b\u044c\u043d\u0430\u044f \u0442\u0440\u0443\u0431\u0430 friction welding<\/strong>.<\/p>\n\n<p class=\"wp-block-paragraph\">This is one of the most important stages in the entire \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0441\u0442\u0432\u0435\u043d\u043d\u044b\u0439 \u043f\u0440\u043e\u0446\u0435\u0441\u0441 because the weld becomes a permanent part of the structural load path between the relatively thin \u0442\u0440\u0443\u0431\u0430 body and the heavier \u0437\u0430\u043c\u043a\u043e\u0432\u043e\u0435 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435.<\/p>\n\n<h3 class=\"wp-block-heading\">Preparing the Weld Ends<\/h3>\n\n<p class=\"wp-block-paragraph\">Before welding, the upset \u0442\u0440\u0443\u0431\u0430 end and tool-\u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 weld end need co\u041c\u041f\u0430tible mating surfaces.<\/p>\n\n<p class=\"wp-block-paragraph\">Turning and facing operations can be used to establish the required end \u0434\u0438\u0430\u043c\u0435\u0442\u0440, face condition, and alignment before the two components enter the welding machine. Tejas describes this preparation as a \u201cturn and face\u201d operation used to create consistent weld surfaces before inertia welding. <\/p>\n\n<figure class=\"wp-block-video\"><video height=\"1440\" style=\"aspect-ratio: 2560 \/ 1440;\" width=\"2560\" controls=\"\" src=\"https:\/\/www.drillpipes.com\/wp-content\/uploads\/2026\/08\/Weld-End-Preparation0.mp4\"><\/video><\/figure>\n\n<p class=\"wp-block-paragraph\">This step prevents an important miscoNCeption: friction welding cannot be expected to correct major \u0440\u0430\u0437\u043c\u0435\u0440al or alignment errors created earlier in production.<\/p>\n\n<p class=\"wp-block-paragraph\">The required load path has to be established before welding:<\/p>\n\n<p class=\"wp-block-paragraph\"><strong>pipe body \u2192 upset transition \u2192 prepared weld interface \u2192 tool joint<\/strong>.<\/p>\n\n<h2 class=\"wp-block-heading\">How Friction Welding Forms the \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435<\/h2>\n\n<p class=\"wp-block-paragraph\">During rotary or inertia friction welding, one component rotates relative to the other while axial force brings the prepared surfaces into contact.<\/p>\n\n<figure class=\"wp-block-video\"><video height=\"1440\" style=\"aspect-ratio: 2560 \/ 1440;\" width=\"2560\" controls=\"\" src=\"https:\/\/www.drillpipes.com\/wp-content\/uploads\/2026\/08\/ideo-Drill-Pipe-Tool-Joint-Friction-Welding1.mp4\"><\/video><\/figure>\n\n<p class=\"wp-block-paragraph\">Friction generates heat at the interface. The \u043c\u0430\u0442\u0435\u0440\u0438\u0430\u043b near the surfaces becomes plasticized, and axial loading displaces heated \u043c\u0430\u0442\u0435\u0440\u0438\u0430\u043b from the interface. The process then completes the \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 through a forging action rather than conventional melting of a large weld pool.<\/p>\n\n<p class=\"wp-block-paragraph\">This is a <strong>solid-state joining process<\/strong>. During friction welding, coNCentricity and key process para\u043c\u0435\u0442\u0440s such as rotational speed, axial force, and cycle time are controlled and recorded for each \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435. The actual settings depend on the \u0442\u0440\u0443\u0431\u0430-body and tool-\u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 configuration and are established by the qualIFied welding procedure rather than fixed as universal API values.<br\/>After welding, the \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 proceeds to flash removal, weld-zone \u0442\u0435\u0440\u043c\u043e\u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0430, and \u0438\u043d\u0441\u043f\u0435\u043a\u0446\u0438\u044f before final acceptaNCe.<\/p>\n\n<h3 class=\"wp-block-heading\"><strong>Weld Alignment and Load Transfer<\/strong><\/h3>\n\n<div class=\"wp-block-media-text is-stacked-on-mobile\" style=\"grid-template-columns:43% auto\"><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"501\" src=\"https:\/\/www.drillpipes.com\/wp-content\/uploads\/2026\/08\/Drill-pipe-weld-alignment-and-load-transfer-path-from-pipe-body-through-upset-transition-to-tool-joint-e1787194248688-1024x501.png\" alt=\"\" class=\"wp-image-14414 size-full\" srcset=\"https:\/\/www.drillpipes.com\/wp-content\/uploads\/2026\/08\/Drill-pipe-weld-alignment-and-load-transfer-path-from-pipe-body-through-upset-transition-to-tool-joint-e1787194248688-1024x501.png 1024w, https:\/\/www.drillpipes.com\/wp-content\/uploads\/2026\/08\/Drill-pipe-weld-alignment-and-load-transfer-path-from-pipe-body-through-upset-transition-to-tool-joint-e1787194248688-300x147.png 300w, https:\/\/www.drillpipes.com\/wp-content\/uploads\/2026\/08\/Drill-pipe-weld-alignment-and-load-transfer-path-from-pipe-body-through-upset-transition-to-tool-joint-e1787194248688-768x376.png 768w, https:\/\/www.drillpipes.com\/wp-content\/uploads\/2026\/08\/Drill-pipe-weld-alignment-and-load-transfer-path-from-pipe-body-through-upset-transition-to-tool-joint-e1787194248688-1536x752.png 1536w, https:\/\/www.drillpipes.com\/wp-content\/uploads\/2026\/08\/Drill-pipe-weld-alignment-and-load-transfer-path-from-pipe-body-through-upset-transition-to-tool-joint-e1787194248688.png 1622w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<p class=\"wp-block-paragraph\">The friction-\u0441\u0432\u0430\u0440\u043d\u043e\u0439 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 must maintain proper alignment between the \u0442\u0440\u0443\u0431\u0430 body and \u0437\u0430\u043c\u043a\u043e\u0432\u043e\u0435 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 so that axial load, \u043a\u0440\u0443\u0442\u044f\u0449\u0438\u0439 \u043c\u043e\u043c\u0435\u043d\u0442, and bending can pass smoothly through the upset and weld transition. CoNCentricity is therefore controlled as part of the welding process, not simply checked as an external \u0440\u0430\u0437\u043c\u0435\u0440al feature.<\/p>\n<\/div><\/div>\n\n<p class=\"wp-block-paragraph\">Excessive eccentricity can shIFt the load path away from the \u0431\u0443\u0440\u0438\u043b\u044c\u043d\u0430\u044f \u0442\u0440\u0443\u0431\u0430 centerline and create higher localized cyclic stress during rotation and bending. For this reason, alignment of the \u0442\u0440\u0443\u0431\u0430 body, weld interface, and \u0437\u0430\u043c\u043a\u043e\u0432\u043e\u0435 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 is verIFied together with weld integrity before the assembly proceeds to subsequent \u0442\u0435\u0440\u043c\u043e\u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0430 and \u0438\u043d\u0441\u043f\u0435\u043a\u0446\u0438\u044f.<\/p>\n\n<h3 class=\"wp-block-heading\">Weld Flash Removal<\/h3>\n\n<p class=\"wp-block-paragraph\">Friction welding displaces plasticized \u043c\u0430\u0442\u0435\u0440\u0438\u0430\u043b away from the interface and forms weld flash.<\/p>\n\n<p class=\"wp-block-paragraph\">The preseNCe of flash immediately after welding is part of the joining mechanism; it should not automatically be described as a weld defect. The flash is subsequently removed from the appropriate internal and external areas so that the finished bore and outside transition can be machined and in\u0441\u043f\u0435\u0446\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u044fted.<\/p>\n\n<figure class=\"wp-block-video\"><video height=\"1440\" style=\"aspect-ratio: 2560 \/ 1440;\" width=\"2560\" controls=\"\" src=\"https:\/\/www.drillpipes.com\/wp-content\/uploads\/2026\/08\/Drill-Pipe-External-Weld-Flash-Grinding1.mp4\"><\/video><\/figure>\n\n<p class=\"wp-block-paragraph\">Internal finishing is particularly relevant because \u0431\u0443\u0440\u0435\u043d\u0438\u0435 fluid must pass through the bore of the completed \u0431\u0443\u0440\u0438\u043b\u044c\u043d\u0430\u044f \u0442\u0440\u0443\u0431\u0430 without an unintended local obstruction.<\/p>\n\n<h3 class=\"wp-block-heading\">Weld-Zone \u0442\u0435\u0440\u043c\u043e\u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0430<\/h3>\n\n<p class=\"wp-block-paragraph\">After friction welding and flash removal, the weld zone is heat treated separately from the \u0442\u0440\u0443\u0431\u0430 body and \u0437\u0430\u043c\u043a\u043e\u0432\u043e\u0435 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435. This controls the local metallurgical condition created at the \u0441\u0432\u0430\u0440\u043d\u043e\u0439 interface.<\/p>\n\n<p class=\"wp-block-paragraph\">The weld zone is then checked by \u0442\u0432\u0435\u0440\u0434\u043e\u0441\u0442\u044c testing and nondestructive examination before final \u0440\u0430\u0437\u043c\u0435\u0440al and \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 \u0438\u043d\u0441\u043f\u0435\u043a\u0446\u0438\u044f. Records for the <strong>\u0442\u0440\u0443\u0431\u0430 body, weld zone, and \u0437\u0430\u043c\u043a\u043e\u0432\u043e\u0435 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435<\/strong> remain traceable through final release according to API 5DP \/ ISO 11961 and the project \u0441\u043f\u0435\u0446\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u044f.<\/p>\n\n<figure class=\"wp-block-video\"><video height=\"1440\" style=\"aspect-ratio: 2560 \/ 1440;\" width=\"2560\" controls=\"\" src=\"https:\/\/www.drillpipes.com\/wp-content\/uploads\/2026\/08\/Drill-Pipe-Internal-Bore-Treatment1.mp4\"><\/video><\/figure>\n\n<p class=\"wp-block-paragraph\">Each has a dIFferent manufacturing history and therefore requires appropriate production and \u0438\u043d\u0441\u043f\u0435\u043a\u0446\u0438\u044f evideNCe.<\/p>\n\n<h2 class=\"wp-block-heading\">\u0438\u043d\u0441\u043f\u0435\u043a\u0446\u0438\u044f and Final Release<\/h2>\n\n<p class=\"wp-block-paragraph\">\u0431\u0443\u0440\u0438\u043b\u044c\u043d\u0430\u044f \u0442\u0440\u0443\u0431\u0430 \u0438\u043d\u0441\u043f\u0435\u043a\u0446\u0438\u044f continues throughout manufacturing, but final release confirms that the \u0442\u0440\u0443\u0431\u0430 body, upset ends, \u0437\u0430\u043c\u043a\u043e\u0432\u043e\u0435 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435s, friction-\u0441\u0432\u0430\u0440\u043d\u043e\u0439 zones, and \u0440\u0435\u0437\u044c\u0431\u0430ed \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435s together meet the \u0441\u043f\u0435\u0446\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u044fIFied product and purchase requirements. Final verIFication typically reviews \u0440\u0430\u0437\u043c\u0435\u0440al condition, alignment, mechanical-test results, applicable nondestructive examination, weld-zone condition, and \u0448\u0435\u0439\u043a\u0430\/\u043c\u0430\u0442\u043a\u0430 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 \u043a\u0430\u0447\u0435\u0441\u0442\u0432\u043e before the finished \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 is accepted for shipment.<\/p>\n\n<p class=\"wp-block-paragraph\">Traceability is an important part of this stage. The identity of each finished \u0431\u0443\u0440\u0438\u043b\u044c\u043d\u0430\u044f \u0442\u0440\u0443\u0431\u0430 should remain connected to the relevant starting \u043c\u0430\u0442\u0435\u0440\u0438\u0430\u043b, heat-treatment lot, tool-\u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 manufacturing records, friction-welding records, post-weld \u0442\u0435\u0440\u043c\u043e\u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0430, and \u0438\u043d\u0441\u043f\u0435\u043a\u0446\u0438\u044f results. This allows the completed \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 to be evaluated according to its actual manufacturing history rather than only by its final appearaNCe or \u043a\u043b\u0430\u0441\u0441 marking.<\/p>\n\n<p class=\"wp-block-paragraph\">Before release, the finished \u0431\u0443\u0440\u0438\u043b\u044c\u043d\u0430\u044f \u0442\u0440\u0443\u0431\u0430 is also checked for correct product identIFication, \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 protection, and the documentation required by the applicable \u0441\u043f\u0435\u0446\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u044f and purchase order. The final acceptaNCe therefore confirms both the physical condition of the \u0431\u0443\u0440\u0438\u043b\u044c\u043d\u0430\u044f \u0442\u0440\u0443\u0431\u0430 and the consisteNCy of the records supporting its \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0441\u0442\u0432\u043e and \u0438\u043d\u0441\u043f\u0435\u043a\u0446\u0438\u044f.<\/p>\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-0e47273b wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/www.drillpipes.com\/wp-content\/uploads\/2026\/08\/API-steel-drill-pipes-moving-through-the-manufacturing-line-for-processing-and-final-identification-1024x576.png\" alt=\"\" class=\"wp-image-14424\" srcset=\"https:\/\/www.drillpipes.com\/wp-content\/uploads\/2026\/08\/API-steel-drill-pipes-moving-through-the-manufacturing-line-for-processing-and-final-identification-1024x576.png 1024w, https:\/\/www.drillpipes.com\/wp-content\/uploads\/2026\/08\/API-steel-drill-pipes-moving-through-the-manufacturing-line-for-processing-and-final-identification-300x169.png 300w, https:\/\/www.drillpipes.com\/wp-content\/uploads\/2026\/08\/API-steel-drill-pipes-moving-through-the-manufacturing-line-for-processing-and-final-identification.png 1672w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/www.drillpipes.com\/wp-content\/uploads\/2026\/08\/Steel-drill-pipe-production-workshop-with-finished-drill-pipe-assemblies-prepared-for-inspection-and-release-1024x576.png\" alt=\"\" class=\"wp-image-14425\" srcset=\"https:\/\/www.drillpipes.com\/wp-content\/uploads\/2026\/08\/Steel-drill-pipe-production-workshop-with-finished-drill-pipe-assemblies-prepared-for-inspection-and-release-1024x576.png 1024w, https:\/\/www.drillpipes.com\/wp-content\/uploads\/2026\/08\/Steel-drill-pipe-production-workshop-with-finished-drill-pipe-assemblies-prepared-for-inspection-and-release-300x169.png 300w, https:\/\/www.drillpipes.com\/wp-content\/uploads\/2026\/08\/Steel-drill-pipe-production-workshop-with-finished-drill-pipe-assemblies-prepared-for-inspection-and-release.png 1672w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n<\/div>\n\n<h2 class=\"wp-block-heading\">Optional Finishing Processes Before Shipment<\/h2>\n\n<p class=\"wp-block-paragraph\">The core <strong><a href=\"__PROTECTED_0__\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-secondary-color\">API 5DP \u0431\u0443\u0440\u0438\u043b\u044c\u043d\u0430\u044f \u0442\u0440\u0443\u0431\u0430 manufacturing<\/mark><\/a><\/strong> sequeNCe should be separated from processes that depend on the purchase order.<\/p>\n\n<p class=\"wp-block-paragraph\">Hardbanding may be applied to selected tool-\u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 OD areas when \u0438\u0437\u043d\u043e\u0441 protection is required. \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 surface treatment may be \u0441\u043f\u0435\u0446\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u044fIFied to support make-up performaNCe or handling. Internal coating can be added where the service and purchase \u0441\u043f\u0435\u0446\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u044f require it. Finished \u0448\u0435\u0439\u043a\u0430 and \u043c\u0430\u0442\u043a\u0430 ends are also protected during handling and transportation.<\/p>\n\n<p class=\"wp-block-paragraph\">These operations are useful, but they should not be presented as mandatory manufacturing steps for every \u0431\u0443\u0440\u0438\u043b\u044c\u043d\u0430\u044f \u0442\u0440\u0443\u0431\u0430.That distiNCtion keeps the article technically accurate and helps buyers separate:<\/p>\n\n<p class=\"wp-block-paragraph\">Hardbanding, <a href=\"__PROTECTED_0__\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-secondary-color\">internal coating<\/mark><\/a>, and \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 surface treatments are order-\u0441\u043f\u0435\u0446\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u044fIFic operations rather than universal steps in \u0431\u0443\u0440\u0438\u043b\u044c\u043d\u0430\u044f \u0442\u0440\u0443\u0431\u0430 manufacturing. Their application depends on the \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 design, \u0431\u0443\u0440\u0435\u043d\u0438\u0435 conditions, \u0438\u0437\u043d\u043e\u0441 requirements, and project \u0441\u043f\u0435\u0446\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u044f.<\/p>\n\n<h2 class=\"wp-block-heading\">Manufacturing Control Across the \u0431\u0443\u0440\u0438\u043b\u044c\u043d\u0430\u044f \u0442\u0440\u0443\u0431\u0430 Load Path<\/h2>\n\n<p class=\"wp-block-paragraph\">A finished \u0431\u0443\u0440\u0438\u043b\u044c\u043d\u0430\u044f \u0442\u0440\u0443\u0431\u0430 transfers axial load, \u043a\u0440\u0443\u0442\u044f\u0449\u0438\u0439 \u043c\u043e\u043c\u0435\u043d\u0442, bending load, and \u0431\u0443\u0440\u0435\u043d\u0438\u0435 vibration through the \u0442\u0440\u0443\u0431\u0430 body, upset transition, friction-weld zone, \u0437\u0430\u043c\u043a\u043e\u0432\u043e\u0435 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435, and rotary shouldered \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435. Because these sections are formed and processed separately, their geometry and alignment must remain consistent through final assembly.<\/p>\n\n<p class=\"wp-block-paragraph\">At the <strong>upset transition<\/strong>, manufacturing control focuses on wall build-up, transition profile, OD\/ID coNCentricity, and straightness after forming and \u0442\u0435\u0440\u043c\u043e\u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0430. Before friction welding, the upset \u0442\u0440\u0443\u0431\u0430 end and tool-\u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 weld end are turned and faced so that the mating surfaces, bore, and \u043d\u0430\u0440\u0443\u0436\u043d\u044b\u0439 \u0434\u0438\u0430\u043c\u0435\u0442\u0440 are correctly aligned. After welding, internal and external flash is removed, the weld zone receives the \u0441\u043f\u0435\u0446\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u044fIFied post-weld \u0442\u0435\u0440\u043c\u043e\u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0430, and the \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 is checked for weld integrity, \u0442\u0432\u0435\u0440\u0434\u043e\u0441\u0442\u044c condition, alignment, and \u0440\u0430\u0437\u043c\u0435\u0440al conformity.<\/p>\n\n<p class=\"wp-block-paragraph\">The <strong>\u0437\u0430\u043c\u043a\u043e\u0432\u043e\u0435 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 and \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435<\/strong> are controlled separately through OD\/ID machining, shoulder machining, \u0448\u0435\u0439\u043a\u0430 or \u043c\u0430\u0442\u043a\u0430 \u0440\u0435\u0437\u044c\u0431\u0430 cutting, and \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 gauging. \u0440\u0435\u0437\u044c\u0431\u0430 profile, taper, lead, shoulder condition, bore alignment, and \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 \u0440\u0430\u0437\u043c\u0435\u0440s are verIFied according to the applicable API 7-2 \/ ISO 10424-2 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 requirements, while the completed \u0431\u0443\u0440\u0438\u043b\u044c\u043d\u0430\u044f \u0442\u0440\u0443\u0431\u0430 is released according to API 5DP \/ ISO 11961 and the ordered project \u0441\u043f\u0435\u0446\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u044f.<\/p>\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-d61d70aa wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/www.drillpipes.com\/ru\/%d0%ba%d0%be%d0%bd%d1%82%d0%b0%d0%ba%d1%82%d1%8b\/\">Free Quotation<\/a><\/div>\n<\/div>\n\n<h2 class=\"wp-block-heading\">FAQ<\/h2>\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\" open><summary>Why are \u0431\u0443\u0440\u0438\u043b\u044c\u043d\u0430\u044f \u0442\u0440\u0443\u0431\u0430 ends upset before the \u0437\u0430\u043c\u043a\u043e\u0432\u043e\u0435 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435s are \u0441\u0432\u0430\u0440\u043d\u043e\u0439?<\/summary>\n<p class=\"wp-block-paragraph\">Upsetting iNCreases the cross-sectional area at the \u0442\u0440\u0443\u0431\u0430 end and creates the transition required for joining the relatively thin \u0442\u0440\u0443\u0431\u0430 body to the heavier \u0437\u0430\u043c\u043a\u043e\u0432\u043e\u0435 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435. The geometry of this transition also affects alignment and local stress distribution during cyclic \u0431\u0443\u0440\u0435\u043d\u0438\u0435 loads.<\/p>\n<\/details>\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\" open><summary>Why does a friction-\u0441\u0432\u0430\u0440\u043d\u043e\u0439 \u0431\u0443\u0440\u0438\u043b\u044c\u043d\u0430\u044f \u0442\u0440\u0443\u0431\u0430 require post-weld \u0442\u0435\u0440\u043c\u043e\u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0430?<\/summary>\n<p class=\"wp-block-paragraph\">The \u0442\u0440\u0443\u0431\u0430 body and \u0437\u0430\u043c\u043a\u043e\u0432\u043e\u0435 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 may already have their required mechanical properties before assembly, but friction welding creates a new local metallurgical region between them. Post-weld \u0442\u0435\u0440\u043c\u043e\u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0430 controls this region before \u0442\u0432\u0435\u0440\u0434\u043e\u0441\u0442\u044c testing and nondestructive examination.<\/p>\n<\/details>\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\" open><summary>Are the \u0442\u0440\u0443\u0431\u0430 body and \u0431\u0443\u0440\u0438\u043b\u044c\u043d\u0430\u044f \u0442\u0440\u0443\u0431\u0430 \u0437\u0430\u043c\u043a\u043e\u0432\u043e\u0435 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0441\u0442\u0432\u043ed separately?<\/summary>\n<p class=\"wp-block-paragraph\">Yes. They normally follow separate \u043c\u0430\u0442\u0435\u0440\u0438\u0430\u043b, heat-treatment, machining, and \u0438\u043d\u0441\u043f\u0435\u043a\u0446\u0438\u044f routes before final friction welding. This is why \u0442\u0440\u0443\u0431\u0430-body records and tool-\u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 records should remain identIFiable through the final assembly process.<\/p>\n<\/details>\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\" open><summary>What should buyers check in a \u0431\u0443\u0440\u0438\u043b\u044c\u043d\u0430\u044f \u0442\u0440\u0443\u0431\u0430 manufacturing document package?<\/summary>\n<p class=\"wp-block-paragraph\">The document package should allow the finished \u0431\u0443\u0440\u0438\u043b\u044c\u043d\u0430\u044f \u0442\u0440\u0443\u0431\u0430 to be linked to its \u043c\u0430\u0442\u0435\u0440\u0438\u0430\u043b identity, heat-treatment and mechanical-test records, applicable \u0442\u0440\u0443\u0431\u0430-body and weld-zone NDT, tool-\u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 and \u0440\u0435\u0437\u044c\u0431\u0430 \u0438\u043d\u0441\u043f\u0435\u043a\u0446\u0438\u044f, \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 verIFication, and final product marking. The exact scope should be defined in the purchase order and applicable API\/project \u0441\u043f\u0435\u0446\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u044f.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"410\" src=\"https:\/\/www.drillpipes.com\/wp-content\/uploads\/2026\/05\/OCTAL-Certifications-1024x410.png\" alt=\"\" class=\"wp-image-12635\" srcset=\"https:\/\/www.drillpipes.com\/wp-content\/uploads\/2026\/05\/OCTAL-Certifications-1024x410.png 1024w, https:\/\/www.drillpipes.com\/wp-content\/uploads\/2026\/05\/OCTAL-Certifications-300x120.png 300w, https:\/\/www.drillpipes.com\/wp-content\/uploads\/2026\/05\/OCTAL-Certifications-2000x800.png 2000w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/details>\n","protected":false},"excerpt":{"rendered":"<p>\u0431\u0443\u0440\u0438\u043b\u044c\u043d\u0430\u044f \u0442\u0440\u0443\u0431\u0430 manufacturing combines a heat-treated \u0431\u0435\u0441\u0448\u043e\u0432\u043d\u044b\u0439 \u0442\u0440\u0443\u0431\u0430 body with separately produced \u0437\u0430\u043c\u043a\u043e\u0432\u043e\u0435 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435s to form a complete load-bearing \u0431\u0443\u0440\u0438\u043b\u044c\u043d\u0430\u044f \u043a\u043e\u043b\u043e\u043d\u043d\u0430 component. The \u0442\u0440\u0443\u0431\u0430 ends are upset to iNCrease the local cross-section, while the \u0437\u0430\u043c\u043a\u043e\u0432\u043e\u0435 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435s are heat treated and machined with \u0448\u0435\u0439\u043a\u0430 and \u043c\u0430\u0442\u043a\u0430 rotary shouldered \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435s. The two parts are then joined by &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/www.drillpipes.com\/ru\/how-is-%d0%b1%d1%83%d1%80%d0%b8%d0%bb%d1%8c%d0%bd%d0%b0%d1%8f-%d1%82%d1%80%d1%83%d0%b1%d0%b0-%d0%bf%d1%80%d0%be%d0%b8%d0%b7%d0%b2%d0%be%d0%b4%d1%81%d1%82%d0%b2%d0%bed\/\" class=\"more-link\">\u0427\u0438\u0442\u0430\u0442\u044c \u0434\u0430\u043b\u0435\u0435<span class=\"screen-reader-text\"> &#171;How Is \u0431\u0443\u0440\u0438\u043b\u044c\u043d\u0430\u044f \u0442\u0440\u0443\u0431\u0430 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0441\u0442\u0432\u043ed?&#187;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":15800,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_eb_attr":"","footnotes":""},"categories":[106],"tags":[],"class_list":["post-15789","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-106"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.1.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>How Is \u0431\u0443\u0440\u0438\u043b\u044c\u043d\u0430\u044f \u0442\u0440\u0443\u0431\u0430 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0441\u0442\u0432\u043ed? \u0411\u043b\u043e\u0433 - Octal<\/title>\n<meta name=\"description\" content=\"\u0431\u0443\u0440\u0438\u043b\u044c\u043d\u0430\u044f \u0442\u0440\u0443\u0431\u0430 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0441\u0442\u0432\u0435\u043d\u043d\u044b\u0439 \u043f\u0440\u043e\u0446\u0435\u0441\u0441 covers upsetting, \u0442\u0435\u0440\u043c\u043e\u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0430, tool-\u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 machining, friction welding, and \u0438\u043d\u0441\u043f\u0435\u043a\u0446\u0438\u044f to control \u0442\u0440\u0443\u0431\u0430 strength, weld integrity, \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 accuracy, and final traceability.\" 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