{"id":15776,"date":"2026-08-20T18:16:10","date_gmt":"2026-08-20T10:16:10","guid":{"rendered":"https:\/\/www.drillpipes.com\/how-is-%d8%a3%d9%86%d8%a8%d9%88%d8%a8-%d8%a7%d9%84%d8%ad%d9%81%d8%b1-%d8%a7%d9%84%d8%aa%d8%b5%d9%86%d9%8a%d8%b9d\/"},"modified":"2026-09-18T16:06:26","modified_gmt":"2026-09-18T08:06:26","slug":"how-is-%d8%a3%d9%86%d8%a8%d9%88%d8%a8-%d8%a7%d9%84%d8%ad%d9%81%d8%b1-%d8%a7%d9%84%d8%aa%d8%b5%d9%86%d9%8a%d8%b9d","status":"publish","type":"post","link":"https:\/\/www.drillpipes.com\/ar\/how-is-%d8%a3%d9%86%d8%a8%d9%88%d8%a8-%d8%a7%d9%84%d8%ad%d9%81%d8%b1-%d8%a7%d9%84%d8%aa%d8%b5%d9%86%d9%8a%d8%b9d\/","title":{"rendered":"How Is \u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u062d\u0641\u0631 \u0627\u0644\u062a\u0635\u0646\u064a\u0639d?"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u062d\u0641\u0631 manufacturing combines a heat-treated \u063a\u064a\u0631 \u0645\u0644\u062d\u0648\u0645 \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 body with separately produced \u0627\u0644\u0648\u0635\u0644\u0629s to form a complete load-bearing \u0633\u0627\u0642 \u0627\u0644\u062d\u0641\u0631 component. The \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 ends are upset to iNCrease the local cross-section, while the \u0627\u0644\u0648\u0635\u0644\u0629s are heat treated and machined with \u0627\u0644\u062f\u0628\u0648\u0633 and \u0627\u0644\u0635\u0646\u062f\u0648\u0642 rotary shouldered \u0627\u0644\u0648\u0635\u0644\u0629s. The two parts are then joined by friction welding, followed by weld-zone \u0627\u0644\u0645\u0639\u0627\u0644\u062c\u0629 \u0627\u0644\u062d\u0631\u0627\u0631\u064a\u0629, \u0627\u0644\u0628\u0639\u062fal verIFication, nondestructive examination, and final traceability control before release.<\/p>\n\n<p class=\"wp-block-paragraph\">\u0627\u0644\u0646\u0641\u0637field steel \u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u062d\u0641\u0631 for petroleum and natural-\u0627\u0644\u063a\u0627\u0632 \u0627\u0644\u062d\u0641\u0631 uses an upset \u063a\u064a\u0631 \u0645\u0644\u062d\u0648\u0645 \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 body with separately \u0627\u0644\u062a\u0635\u0646\u064a\u0639d weld-on \u0627\u0644\u0648\u0635\u0644\u0629s. This construction dIFfers from HDD \u0627\u0644\u062d\u0641\u0631 rods and DTH \u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u062d\u0641\u0631s, which may use dIFferent body designs and joining methods. For API\/ISO \u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u062d\u0641\u0631, the main manufacturing controls are the \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 body, upset ends, \u0627\u0644\u0648\u0635\u0644\u0629s, friction-\u0645\u0644\u062d\u0648\u0645 interfaces, rotary shouldered \u0627\u0644\u0648\u0635\u0644\u0629s, 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 \u0627\u0644\u062d\u0641\u0631 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 \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628-body strength, upset transition, tool-\u0627\u0644\u0648\u0635\u0644\u0629 geometry, friction-weld zone, \u0627\u0644\u0648\u0635\u0644\u0629 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\">\u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u062d\u0641\u0631 \u0639\u0645\u0644\u064a\u0629 \u0627\u0644\u062a\u0635\u0646\u064a\u0639 at a GlaNCe<\/h2>\n\n<p class=\"wp-block-paragraph\">A practical way to understand <strong>\u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u062d\u0641\u0631 manufacturing<\/strong> is to separate it into two production routes.<\/p>\n\n<p class=\"wp-block-paragraph\">The first creates the <strong>\u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 body<\/strong>. The second creates the <strong>\u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u062d\u0641\u0631 \u0627\u0644\u0648\u0635\u0644\u0629<\/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\">\u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 body<\/td><td>\u063a\u064a\u0631 \u0645\u0644\u062d\u0648\u0645 tube verIFication \u2192 upsetting \u2192 \u0627\u0644\u0645\u0639\u0627\u0644\u062c\u0629 \u0627\u0644\u062d\u0631\u0627\u0631\u064a\u0629 \u2192 straightening \u2192 \u0627\u0644\u0628\u0639\u062fal and NDT \u0627\u0644\u062a\u0641\u062a\u064a\u0634 \u2192 weld-end preparation.<\/td><td>Mechanical properties, body geometry, upset transition and \u0627\u0644\u0645\u0627\u062f\u0629 integrity.<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">\u0627\u0644\u0648\u0635\u0644\u0629<\/td><td>\u0627\u0644\u0645\u0627\u062f\u0629 preparation \u2192 \u0627\u0644\u0645\u0639\u0627\u0644\u062c\u0629 \u0627\u0644\u062d\u0631\u0627\u0631\u064a\u0629 \u2192 OD\/ID machining \u2192 shoulder machining \u2192 \u0627\u0644\u062f\u0628\u0648\u0633\/\u0627\u0644\u0635\u0646\u062f\u0648\u0642 \u0627\u0644\u0648\u0635\u0644\u0629 machining \u2192 gauging.<\/td><td>\u0627\u0644\u0648\u0635\u0644\u0629 strength, \u0627\u0644\u0628\u0639\u062fs 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 \u0627\u0644\u0645\u0639\u0627\u0644\u062c\u0629 \u0627\u0644\u062d\u0631\u0627\u0631\u064a\u0629 \u2192 NDT \u2192 \u0627\u0644\u0648\u0635\u0644\u0629 verIFication \u2192 marking and release.<\/td><td>Body-to-tool-\u0627\u0644\u0648\u0635\u0644\u0629 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 \u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u062d\u0641\u0631. ISO 11961 \u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062aIFies steel \u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u062d\u0641\u0631 with <strong>upset \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628-body ends and weld-on \u0627\u0644\u0648\u0635\u0644\u0629s<\/strong>, while API also treats \u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u062d\u0641\u0631 bodies, \u0627\u0644\u0648\u0635\u0644\u0629s, and completed \u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u062d\u0641\u0631 as distiNCt manufacturing elements within its certIFication framework. <\/p>\n\n<p class=\"wp-block-paragraph\">The exact equipment arrangement can dIFfer from one \u0627\u0644\u0645\u0637\u062d\u0646\u0629 to another. For that reason, a professional description of the <strong>\u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u062d\u0641\u0631 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=\"\u062a\u0636\u0645\u064a\u0646 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\">\u0627\u0644\u062d\u0641\u0631_\u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628_Manufacturing_Route_\u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628_Body_Tool_\u0627\u0644\u0648\u0635\u0644\u0629<\/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\">\u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 Body Manufacturing: From \u063a\u064a\u0631 \u0645\u0644\u062d\u0648\u0645 Tube to an Upset \u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u062d\u0641\u0631 Body<\/h2>\n\n<p class=\"wp-block-paragraph\">The \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 body forms the long load-carrying section of the \u0633\u0627\u0642 \u0627\u0644\u062d\u0641\u0631. During \u0627\u0644\u062d\u0641\u0631 it is exposed to tension, \u0639\u0632\u0645 \u0627\u0644\u062f\u0648\u0631\u0627\u0646, internal fluid pressure, bending, and repeated cyclic loading. Its manufacturing route therefore has to control both \u0627\u0644\u0645\u0627\u062f\u0629 properties and \u0627\u0644\u0628\u0639\u062fal stability.<\/p>\n\n<h3 class=\"wp-block-heading\">\u063a\u064a\u0631 \u0645\u0644\u062d\u0648\u0645 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\">\u063a\u064a\u0631 \u0645\u0644\u062d\u0648\u0645 steel tube<\/mark><\/a> selected for the required \u0627\u0644\u062f\u0631\u062c\u0629 and \u0627\u0644\u0628\u0639\u062fal configuration.<\/p>\n\n<p class=\"wp-block-paragraph\">Before the tube enters upsetting and \u0627\u0644\u0645\u0639\u0627\u0644\u062c\u0629 \u0627\u0644\u062d\u0631\u0627\u0631\u064a\u0629, the \u0627\u0644\u0634\u0631\u0643\u0629 \u0627\u0644\u0645\u0635\u0646\u0639\u0629 needs to retain its \u0627\u0644\u0645\u0627\u062f\u0629 identity and confirm that the starting condition corresponds to the production order. Important checks iNClude tube identIFication, heat or lot refereNCe, \u0627\u0644\u0642\u0637\u0631 \u0627\u0644\u062e\u0627\u0631\u062c\u064a, \u0633\u0645\u0627\u0643\u0629 \u0627\u0644\u062c\u062f\u0627\u0631, surface condition, and applicable \u0627\u0644\u0645\u0627\u062f\u0629 documentation.<\/p>\n\n<p class=\"wp-block-paragraph\">\u0627\u0644\u0645\u0627\u062f\u0629 traceability is maintained from the iNComing \u063a\u064a\u0631 \u0645\u0644\u062d\u0648\u0645 tube through upsetting, \u0627\u0644\u0645\u0639\u0627\u0644\u062c\u0629 \u0627\u0644\u062d\u0631\u0627\u0631\u064a\u0629, straightening, welding, and final \u0627\u0644\u062a\u0641\u062a\u064a\u0634. Heat\/lot identIFication and \u0627\u0644\u062a\u0641\u062a\u064a\u0634 records remain linked to the finished \u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u062d\u0641\u0631 so that mechanical-test and NDT results can be verIFied against the physical \u0627\u0644\u0648\u0635\u0644\u0629 during final release.<\/p>\n\n<h3 class=\"wp-block-heading\">\u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u062d\u0641\u0631 Upsetting Process<\/h3>\n\n<p class=\"wp-block-paragraph\">The <strong>\u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u062d\u0641\u0631 upsetting process<\/strong> modIFies the \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 ends before \u0627\u0644\u0648\u0635\u0644\u0629s 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 \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 end and creates the geometry needed for later \u0627\u0644\u0648\u0635\u0644\u0629 to the heavier \u0627\u0644\u0648\u0635\u0644\u0629.<\/p>\n\n<p class=\"wp-block-paragraph\">After upsetting, the enlarged \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 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 \u0627\u0644\u0648\u0635\u0644\u0629.<\/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 \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 body and the enlarged end.A \u0627\u0644\u0628\u0626\u0631-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 \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 body and the much heavier \u0627\u0644\u0648\u0635\u0644\u0629. 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 \u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062aIFied \u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u062d\u0641\u0631 design, upset configurations can iNClude internal upset, external upset, or internal-external upset. The actual upset type should be taken from the ordered \u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u062d\u0641\u0631 configuration rather than inferred from \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 \u0627\u0644\u062d\u062c\u0645 alone.<\/p>\n\n<h3 class=\"wp-block-heading\">\u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u062d\u0641\u0631 \u0627\u0644\u0645\u0639\u0627\u0644\u062c\u0629 \u0627\u0644\u062d\u0631\u0627\u0631\u064a\u0629<\/h3>\n\n<p class=\"wp-block-paragraph\">After upsetting, the \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 body is heat treated to achieve the mechanical properties required for the \u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062aIFied \u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u062d\u0641\u0631 \u0627\u0644\u062f\u0631\u062c\u0629. For queNChed-and-tempered \u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u062d\u0641\u0631, heating, \u0627\u0644\u062a\u062e\u0645\u064a\u0631, and \u0627\u0644\u062a\u062e\u0641\u064a\u0641 are controlled as a continuous production sequeNCe. The finished condition is verIFied by the required mechanical-property and \u0627\u0644\u0635\u0644\u0627\u0628\u0629 tests rather than by furnace para\u0645\u062a\u0631s 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 \u0627\u0644\u0645\u0639\u0627\u0644\u062c\u0629 \u0627\u0644\u062d\u0631\u0627\u0631\u064a\u0629, the \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 body is checked for mechanical properties, \u0627\u0644\u0635\u0644\u0627\u0628\u0629, \u0627\u0644\u0628\u0639\u062fs, and straightness before weld-end preparation. \u0627\u0644\u062f\u0631\u062c\u0629 requirements for E75, X95, G105, or S135 are verIFied against the applicable API 5DP \/ ISO 11961 requirements and the ordered product \u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a.<\/p>\n\n<p class=\"wp-block-paragraph\">The <strong>friction-weld zone is heat treated separately later in production<\/strong>, after the \u0627\u0644\u0648\u0635\u0644\u0629 has been \u0645\u0644\u062d\u0648\u0645 to the upset \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 body and the weld flash has been removed. This local treatment controls the metallurgical condition of the \u0645\u0644\u062d\u0648\u0645 area before \u0627\u0644\u0635\u0644\u0627\u0628\u0629 verIFication and NDT. \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628-body \u0627\u0644\u0645\u0639\u0627\u0644\u062c\u0629 \u0627\u0644\u062d\u0631\u0627\u0631\u064a\u0629 and weld-zone \u0627\u0644\u0645\u0639\u0627\u0644\u062c\u0629 \u0627\u0644\u062d\u0631\u0627\u0631\u064a\u0629 are therefore recorded as separate manufacturing operations.<\/p>\n\n<h3 class=\"wp-block-heading\">Straightening and \u0627\u0644\u0628\u0639\u062fal Control<\/h3>\n\n<p class=\"wp-block-paragraph\">\u0627\u0644\u0645\u0639\u0627\u0644\u062c\u0629 \u0627\u0644\u062d\u0631\u0627\u0631\u064a\u0629 is followed by geometry control because mechanical properties alone do not produce an acceptable \u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u062d\u0641\u0631.<\/p>\n\n<p class=\"wp-block-paragraph\">The \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 body has to maintain the straightness and \u0627\u0644\u0628\u0639\u062fal condition required for later weld preparation and final assembly. OD, wall condition, straightness, upset geometry, and alignment all affect how accurately the \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 body can be joined to the \u0627\u0644\u0648\u0635\u0644\u0629.<\/p>\n\n<p class=\"wp-block-paragraph\">This matters because the finished \u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u062d\u0641\u0631 forms one rotating load path. A strong \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 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\">\u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 Body and Upset-End \u0627\u0644\u062a\u0641\u062a\u064a\u0634<\/h3>\n\n<p class=\"wp-block-paragraph\">Nondestructive examination must match the geometry being in\u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062ated.<\/p>\n\n<p class=\"wp-block-paragraph\">The long constant-section body can be examined using suitable automated methods such as \u0641\u0648\u0642 \u0635\u0648\u062a\u064a or electromagnetic \u0627\u0644\u062a\u0641\u062a\u064a\u0634 according to the applicable \u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a and production plan. The upset end is more complicated because its \u0633\u0645\u0627\u0643\u0629 \u0627\u0644\u062c\u062f\u0627\u0631 and transition geometry dIFfer from the normal \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 body.<\/p>\n\n<p class=\"wp-block-paragraph\">For this reason, it is better to describe \u0627\u0644\u062a\u0641\u062a\u064a\u0634 by <strong>controlled area<\/strong>:<\/p>\n\n<ul class=\"wp-block-list\">\n<li>normal \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 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 \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 receives UT\u201d does not by itself explain whether all critical regions have actually been examined.<\/p>\n\n<h2 class=\"wp-block-heading\">\u0627\u0644\u0648\u0635\u0644\u0629 Manufacturing and \u0627\u0644\u0648\u0635\u0644\u0629 Preparation<\/h2>\n\n<p class=\"wp-block-paragraph\">The \u0627\u0644\u0648\u0635\u0644\u0629 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>\u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u062d\u0641\u0631 \u0627\u0644\u0648\u0635\u0644\u0629<\/strong> is a separately \u0627\u0644\u062a\u0635\u0646\u064a\u0639d, heat-treated, and machined component. It provides the enlarged \u0627\u0644\u0648\u0635\u0644\u0629 section at each end of the \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 and carries the rotary shouldered \u0627\u0644\u0648\u0635\u0644\u0629 used to join one \u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u062d\u0641\u0631 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-\u0627\u0644\u0648\u0635\u0644\u0629 manufacturing begins with its own controlled \u0627\u0644\u0645\u0627\u062f\u0629 route.The \u0627\u0644\u0648\u0635\u0644\u0629 experieNCes a dIFferent stress and \u0627\u0644\u062a\u0622\u0643\u0644 condition from the main \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 body. Its larger section contains the \u0627\u0644\u062e\u064a\u0637ed \u0627\u0644\u062f\u0628\u0648\u0633 or \u0627\u0644\u0635\u0646\u062f\u0648\u0642 \u0627\u0644\u0648\u0635\u0644\u0629, shoulder, bore, and \u0627\u0644\u062a\u0622\u0643\u0644 surfaces. It therefore has its own \u0627\u0644\u0645\u0627\u062f\u0629, heat-treatment, \u0627\u0644\u0635\u0644\u0627\u0628\u0629, machining, and \u0627\u0644\u062a\u0641\u062a\u064a\u0634 history before welding.<\/p>\n\n<p class=\"wp-block-paragraph\">Finished \u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u062d\u0641\u0631 acceptaNCe iNCludes separate verIFication of the \u0627\u0644\u0648\u0635\u0644\u0629 and rotary shouldered \u0627\u0644\u0648\u0635\u0644\u0629. Tool-\u0627\u0644\u0648\u0635\u0644\u0629 mechanical properties, \u0627\u0644\u0635\u0644\u0627\u0628\u0629, machined \u0627\u0644\u0628\u0639\u062fs, shoulder condition, and \u0627\u0644\u062f\u0628\u0648\u0633\/\u0627\u0644\u0635\u0646\u062f\u0648\u0642 gauging are checked independently from the \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628-body \u0627\u0644\u062f\u0631\u062c\u0629 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 \u0627\u0644\u0645\u0639\u0627\u0644\u062c\u0629 \u0627\u0644\u062d\u0631\u0627\u0631\u064a\u0629, <strong>\u0627\u0644\u0648\u0635\u0644\u0629 machining<\/strong> establishes the \u0627\u0644\u0628\u0639\u062fs required for both \u0627\u0644\u0648\u0635\u0644\u0629 performaNCe and final welding.Important machined areas iNClude the outside profile, internal bore, \u0627\u0644\u0648\u0635\u0644\u0629 shoulder, \u0627\u0644\u062f\u0628\u0648\u0633 or \u0627\u0644\u0635\u0646\u062f\u0648\u0642 region, and weld end.<\/p>\n\n<p class=\"wp-block-paragraph\">The shoulder deserves particular attention. In a rotary shouldered \u0627\u0644\u0648\u0635\u0644\u0629, the \u0627\u0644\u062e\u064a\u0637ed \u0627\u0644\u0648\u0635\u0644\u0629 and shoulder work together during make-up and \u0639\u0632\u0645 \u0627\u0644\u062f\u0648\u0631\u0627\u0646 transfer. A \u0627\u0644\u062e\u064a\u0637 can therefore be \u0627\u0644\u0628\u0639\u062fally close to \u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a while poor shoulder condition still prevents satis\u0627\u0644\u0645\u0635\u0646\u0639 \u0627\u0644\u0648\u0635\u0644\u0629 performaNCe.The weld end also needs a controlled geometry so it can be aligned with the upset \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 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 \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 provide the \u0627\u0644\u062f\u0628\u0648\u0633 and \u0627\u0644\u0635\u0646\u062f\u0648\u0642 \u0627\u0644\u0648\u0635\u0644\u0629 needed to build the \u0633\u0627\u0642 \u0627\u0644\u062d\u0641\u0631.\u0627\u0644\u062e\u064a\u0637 machining must control more than the visible \u0627\u0644\u062e\u064a\u0637 form. \u0627\u0644\u0648\u0635\u0644\u0629 behavior also depends on taper, pitch-related geometry, shoulder condition, alignment, mating coMPatibility, and the actual \u0627\u0644\u0648\u0635\u0644\u0629 design.<\/p>\n\n<p class=\"wp-block-paragraph\">API \u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a 7-2 \u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062aIFically covers <strong>\u0627\u0644\u062e\u064a\u0648\u0637 and gauging of rotary shouldered \u0627\u0644\u0648\u0635\u0644\u0629s<\/strong>. API published Addendum 3 to the second edition in September 2025, so buyers \u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062aIFying API rotary shouldered \u0627\u0644\u0648\u0635\u0644\u0629s should identIFy the applicable edition and project requirements rather than relying on the generic phrase \u201cAPI \u0627\u0644\u062e\u064a\u0637.\u201d <\/p>\n\n<p class=\"wp-block-paragraph\">That distiNCtion also helps keep \u0627\u0644\u0645\u0639\u064a\u0627\u0631s 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: \u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u062d\u0641\u0631 Friction Welding<\/h2>\n\n<p class=\"wp-block-paragraph\">The body and tool-\u0627\u0644\u0648\u0635\u0644\u0629 routes meet during <strong>\u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u062d\u0641\u0631 friction welding<\/strong>.<\/p>\n\n<p class=\"wp-block-paragraph\">This is one of the most important stages in the entire \u0639\u0645\u0644\u064a\u0629 \u0627\u0644\u062a\u0635\u0646\u064a\u0639 because the weld becomes a permanent part of the structural load path between the relatively thin \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 body and the heavier \u0627\u0644\u0648\u0635\u0644\u0629.<\/p>\n\n<h3 class=\"wp-block-heading\">Preparing the Weld Ends<\/h3>\n\n<p class=\"wp-block-paragraph\">Before welding, the upset \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 end and tool-\u0627\u0644\u0648\u0635\u0644\u0629 weld end need coMPatible mating surfaces.<\/p>\n\n<p class=\"wp-block-paragraph\">Turning and facing operations can be used to establish the required end \u0627\u0644\u0642\u0637\u0631, 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 \u0627\u0644\u0628\u0639\u062fal 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 \u0627\u0644\u0648\u0635\u0644\u0629<\/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 \u0627\u0644\u0645\u0627\u062f\u0629 near the surfaces becomes plasticized, and axial loading displaces heated \u0627\u0644\u0645\u0627\u062f\u0629 from the interface. The process then completes the \u0627\u0644\u0648\u0635\u0644\u0629 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\u0645\u062a\u0631s such as rotational speed, axial force, and cycle time are controlled and recorded for each \u0627\u0644\u0648\u0635\u0644\u0629. The actual settings depend on the \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628-body and tool-\u0627\u0644\u0648\u0635\u0644\u0629 configuration and are established by the qualIFied welding procedure rather than fixed as universal API values.<br\/>After welding, the \u0627\u0644\u0648\u0635\u0644\u0629 proceeds to flash removal, weld-zone \u0627\u0644\u0645\u0639\u0627\u0644\u062c\u0629 \u0627\u0644\u062d\u0631\u0627\u0631\u064a\u0629, and \u0627\u0644\u062a\u0641\u062a\u064a\u0634 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-\u0645\u0644\u062d\u0648\u0645 \u0627\u0644\u0648\u0635\u0644\u0629 must maintain proper alignment between the \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 body and \u0627\u0644\u0648\u0635\u0644\u0629 so that axial load, \u0639\u0632\u0645 \u0627\u0644\u062f\u0648\u0631\u0627\u0646, 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 \u0627\u0644\u0628\u0639\u062fal feature.<\/p>\n<\/div><\/div>\n\n<p class=\"wp-block-paragraph\">Excessive eccentricity can shIFt the load path away from the \u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u062d\u0641\u0631 centerline and create higher localized cyclic stress during rotation and bending. For this reason, alignment of the \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 body, weld interface, and \u0627\u0644\u0648\u0635\u0644\u0629 is verIFied together with weld integrity before the assembly proceeds to subsequent \u0627\u0644\u0645\u0639\u0627\u0644\u062c\u0629 \u0627\u0644\u062d\u0631\u0627\u0631\u064a\u0629 and \u0627\u0644\u062a\u0641\u062a\u064a\u0634.<\/p>\n\n<h3 class=\"wp-block-heading\">Weld Flash Removal<\/h3>\n\n<p class=\"wp-block-paragraph\">Friction welding displaces plasticized \u0627\u0644\u0645\u0627\u062f\u0629 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\u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062ated.<\/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 \u0627\u0644\u062d\u0641\u0631 fluid must pass through the bore of the completed \u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u062d\u0641\u0631 without an unintended local obstruction.<\/p>\n\n<h3 class=\"wp-block-heading\">Weld-Zone \u0627\u0644\u0645\u0639\u0627\u0644\u062c\u0629 \u0627\u0644\u062d\u0631\u0627\u0631\u064a\u0629<\/h3>\n\n<p class=\"wp-block-paragraph\">After friction welding and flash removal, the weld zone is heat treated separately from the \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 body and \u0627\u0644\u0648\u0635\u0644\u0629. This controls the local metallurgical condition created at the \u0645\u0644\u062d\u0648\u0645 interface.<\/p>\n\n<p class=\"wp-block-paragraph\">The weld zone is then checked by \u0627\u0644\u0635\u0644\u0627\u0628\u0629 testing and nondestructive examination before final \u0627\u0644\u0628\u0639\u062fal and \u0627\u0644\u0648\u0635\u0644\u0629 \u0627\u0644\u062a\u0641\u062a\u064a\u0634. Records for the <strong>\u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 body, weld zone, and \u0627\u0644\u0648\u0635\u0644\u0629<\/strong> remain traceable through final release according to API 5DP \/ ISO 11961 and the project \u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a.<\/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 \u0627\u0644\u062a\u0641\u062a\u064a\u0634 evideNCe.<\/p>\n\n<h2 class=\"wp-block-heading\">\u0627\u0644\u062a\u0641\u062a\u064a\u0634 and Final Release<\/h2>\n\n<p class=\"wp-block-paragraph\">\u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u062d\u0641\u0631 \u0627\u0644\u062a\u0641\u062a\u064a\u0634 continues throughout manufacturing, but final release confirms that the \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 body, upset ends, \u0627\u0644\u0648\u0635\u0644\u0629s, friction-\u0645\u0644\u062d\u0648\u0645 zones, and \u0627\u0644\u062e\u064a\u0637ed \u0627\u0644\u0648\u0635\u0644\u0629s together meet the \u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062aIFied product and purchase requirements. Final verIFication typically reviews \u0627\u0644\u0628\u0639\u062fal condition, alignment, mechanical-test results, applicable nondestructive examination, weld-zone condition, and \u0627\u0644\u062f\u0628\u0648\u0633\/\u0627\u0644\u0635\u0646\u062f\u0648\u0642 \u0627\u0644\u0648\u0635\u0644\u0629 \u0627\u0644\u062c\u0648\u062f\u0629 before the finished \u0627\u0644\u0648\u0635\u0644\u0629 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 \u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u062d\u0641\u0631 should remain connected to the relevant starting \u0627\u0644\u0645\u0627\u062f\u0629, heat-treatment lot, tool-\u0627\u0644\u0648\u0635\u0644\u0629 manufacturing records, friction-welding records, post-weld \u0627\u0644\u0645\u0639\u0627\u0644\u062c\u0629 \u0627\u0644\u062d\u0631\u0627\u0631\u064a\u0629, and \u0627\u0644\u062a\u0641\u062a\u064a\u0634 results. This allows the completed \u0627\u0644\u0648\u0635\u0644\u0629 to be evaluated according to its actual manufacturing history rather than only by its final appearaNCe or \u0627\u0644\u062f\u0631\u062c\u0629 marking.<\/p>\n\n<p class=\"wp-block-paragraph\">Before release, the finished \u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u062d\u0641\u0631 is also checked for correct product identIFication, \u0627\u0644\u0648\u0635\u0644\u0629 protection, and the documentation required by the applicable \u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a and purchase order. The final acceptaNCe therefore confirms both the physical condition of the \u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u062d\u0641\u0631 and the consisteNCy of the records supporting its \u0627\u0644\u062a\u0635\u0646\u064a\u0639 and \u0627\u0644\u062a\u0641\u062a\u064a\u0634.<\/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 \u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u062d\u0641\u0631 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-\u0627\u0644\u0648\u0635\u0644\u0629 OD areas when \u0627\u0644\u062a\u0622\u0643\u0644 protection is required. \u0627\u0644\u0648\u0635\u0644\u0629 surface treatment may be \u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062aIFied to support make-up performaNCe or handling. Internal coating can be added where the service and purchase \u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a require it. Finished \u0627\u0644\u062f\u0628\u0648\u0633 and \u0627\u0644\u0635\u0646\u062f\u0648\u0642 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 \u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u062d\u0641\u0631.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 \u0627\u0644\u0648\u0635\u0644\u0629 surface treatments are order-\u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062aIFic operations rather than universal steps in \u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u062d\u0641\u0631 manufacturing. Their application depends on the \u0627\u0644\u0648\u0635\u0644\u0629 design, \u0627\u0644\u062d\u0641\u0631 conditions, \u0627\u0644\u062a\u0622\u0643\u0644 requirements, and project \u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a.<\/p>\n\n<h2 class=\"wp-block-heading\">Manufacturing Control Across the \u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u062d\u0641\u0631 Load Path<\/h2>\n\n<p class=\"wp-block-paragraph\">A finished \u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u062d\u0641\u0631 transfers axial load, \u0639\u0632\u0645 \u0627\u0644\u062f\u0648\u0631\u0627\u0646, bending load, and \u0627\u0644\u062d\u0641\u0631 vibration through the \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 body, upset transition, friction-weld zone, \u0627\u0644\u0648\u0635\u0644\u0629, and rotary shouldered \u0627\u0644\u0648\u0635\u0644\u0629. 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 \u0627\u0644\u0645\u0639\u0627\u0644\u062c\u0629 \u0627\u0644\u062d\u0631\u0627\u0631\u064a\u0629. Before friction welding, the upset \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 end and tool-\u0627\u0644\u0648\u0635\u0644\u0629 weld end are turned and faced so that the mating surfaces, bore, and \u0627\u0644\u0642\u0637\u0631 \u0627\u0644\u062e\u0627\u0631\u062c\u064a are correctly aligned. After welding, internal and external flash is removed, the weld zone receives the \u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062aIFied post-weld \u0627\u0644\u0645\u0639\u0627\u0644\u062c\u0629 \u0627\u0644\u062d\u0631\u0627\u0631\u064a\u0629, and the \u0627\u0644\u0648\u0635\u0644\u0629 is checked for weld integrity, \u0627\u0644\u0635\u0644\u0627\u0628\u0629 condition, alignment, and \u0627\u0644\u0628\u0639\u062fal conformity.<\/p>\n\n<p class=\"wp-block-paragraph\">The <strong>\u0627\u0644\u0648\u0635\u0644\u0629 and \u0627\u0644\u0648\u0635\u0644\u0629<\/strong> are controlled separately through OD\/ID machining, shoulder machining, \u0627\u0644\u062f\u0628\u0648\u0633 or \u0627\u0644\u0635\u0646\u062f\u0648\u0642 \u0627\u0644\u062e\u064a\u0637 cutting, and \u0627\u0644\u0648\u0635\u0644\u0629 gauging. \u0627\u0644\u062e\u064a\u0637 profile, taper, lead, shoulder condition, bore alignment, and \u0627\u0644\u0648\u0635\u0644\u0629 \u0627\u0644\u0628\u0639\u062fs are verIFied according to the applicable API 7-2 \/ ISO 10424-2 \u0627\u0644\u0648\u0635\u0644\u0629 requirements, while the completed \u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u062d\u0641\u0631 is released according to API 5DP \/ ISO 11961 and the ordered project \u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a.<\/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\/ar\/%d8%a7%d8%aa%d8%b5%d9%84-%d8%a8%d9%86%d8%a7\/\">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 \u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u062d\u0641\u0631 ends upset before the \u0627\u0644\u0648\u0635\u0644\u0629s are \u0645\u0644\u062d\u0648\u0645?<\/summary>\n<p class=\"wp-block-paragraph\">Upsetting iNCreases the cross-sectional area at the \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 end and creates the transition required for joining the relatively thin \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 body to the heavier \u0627\u0644\u0648\u0635\u0644\u0629. The geometry of this transition also affects alignment and local stress distribution during cyclic \u0627\u0644\u062d\u0641\u0631 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-\u0645\u0644\u062d\u0648\u0645 \u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u062d\u0641\u0631 require post-weld \u0627\u0644\u0645\u0639\u0627\u0644\u062c\u0629 \u0627\u0644\u062d\u0631\u0627\u0631\u064a\u0629?<\/summary>\n<p class=\"wp-block-paragraph\">The \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 body and \u0627\u0644\u0648\u0635\u0644\u0629 may already have their required mechanical properties before assembly, but friction welding creates a new local metallurgical region between them. Post-weld \u0627\u0644\u0645\u0639\u0627\u0644\u062c\u0629 \u0627\u0644\u062d\u0631\u0627\u0631\u064a\u0629 controls this region before \u0627\u0644\u0635\u0644\u0627\u0628\u0629 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 \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 body and \u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u062d\u0641\u0631 \u0627\u0644\u0648\u0635\u0644\u0629 \u0627\u0644\u062a\u0635\u0646\u064a\u0639d separately?<\/summary>\n<p class=\"wp-block-paragraph\">Yes. They normally follow separate \u0627\u0644\u0645\u0627\u062f\u0629, heat-treatment, machining, and \u0627\u0644\u062a\u0641\u062a\u064a\u0634 routes before final friction welding. This is why \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628-body records and tool-\u0627\u0644\u0648\u0635\u0644\u0629 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 \u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u062d\u0641\u0631 manufacturing document package?<\/summary>\n<p class=\"wp-block-paragraph\">The document package should allow the finished \u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u062d\u0641\u0631 to be linked to its \u0627\u0644\u0645\u0627\u062f\u0629 identity, heat-treatment and mechanical-test records, applicable \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628-body and weld-zone NDT, tool-\u0627\u0644\u0648\u0635\u0644\u0629 and \u0627\u0644\u062e\u064a\u0637 \u0627\u0644\u062a\u0641\u062a\u064a\u0634, \u0627\u0644\u0648\u0635\u0644\u0629 verIFication, and final product marking. The exact scope should be defined in the purchase order and applicable API\/project \u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a.<\/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>\u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u062d\u0641\u0631 manufacturing combines a heat-treated \u063a\u064a\u0631 \u0645\u0644\u062d\u0648\u0645 \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 body with separately produced \u0627\u0644\u0648\u0635\u0644\u0629s to form a complete load-bearing \u0633\u0627\u0642 \u0627\u0644\u062d\u0641\u0631 component. The \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 ends are upset to iNCrease the local cross-section, while the \u0627\u0644\u0648\u0635\u0644\u0629s are heat treated and machined with \u0627\u0644\u062f\u0628\u0648\u0633 and \u0627\u0644\u0635\u0646\u062f\u0648\u0642 rotary shouldered \u0627\u0644\u0648\u0635\u0644\u0629s. The two parts are then joined by friction &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/www.drillpipes.com\/ar\/how-is-%d8%a3%d9%86%d8%a8%d9%88%d8%a8-%d8%a7%d9%84%d8%ad%d9%81%d8%b1-%d8%a7%d9%84%d8%aa%d8%b5%d9%86%d9%8a%d8%b9d\/\" class=\"more-link\">Read more<span class=\"screen-reader-text\"> &#8220;How Is \u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u062d\u0641\u0631 \u0627\u0644\u062a\u0635\u0646\u064a\u0639d?&#8221;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":15787,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_eb_attr":"","footnotes":""},"categories":[105],"tags":[],"class_list":["post-15776","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-105"],"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 \u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u062d\u0641\u0631 \u0627\u0644\u062a\u0635\u0646\u064a\u0639d? \u0645\u062f\u0648\u0646\u0629 - Octal<\/title>\n<meta name=\"description\" content=\"\u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u062d\u0641\u0631 \u0639\u0645\u0644\u064a\u0629 \u0627\u0644\u062a\u0635\u0646\u064a\u0639 covers upsetting, \u0627\u0644\u0645\u0639\u0627\u0644\u062c\u0629 \u0627\u0644\u062d\u0631\u0627\u0631\u064a\u0629, tool-\u0627\u0644\u0648\u0635\u0644\u0629 machining, friction welding, and \u0627\u0644\u062a\u0641\u062a\u064a\u0634 to control \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 strength, weld integrity, \u0627\u0644\u0648\u0635\u0644\u0629 accuracy, and final traceability.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.drillpipes.com\/ar\/how-is-%d8%a3%d9%86%d8%a8%d9%88%d8%a8-%d8%a7%d9%84%d8%ad%d9%81%d8%b1-%d8%a7%d9%84%d8%aa%d8%b5%d9%86%d9%8a%d8%b9d\/\" 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