{"id":15802,"date":"2026-08-20T18:16:10","date_gmt":"2026-08-20T10:16:10","guid":{"rendered":"https:\/\/www.drillpipes.com\/how-is-tuberia-de-perforacion-fabricaciond\/"},"modified":"2026-09-18T16:06:58","modified_gmt":"2026-09-18T08:06:58","slug":"how-is-tuberia-de-perforacion-fabricaciond","status":"publish","type":"post","link":"https:\/\/www.drillpipes.com\/es\/how-is-tuberia-de-perforacion-fabricaciond\/","title":{"rendered":"How Is tuber\u00eda de perforaci\u00f3n fabricaci\u00f3nd?"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">tuber\u00eda de perforaci\u00f3n manufacturing combines a heat-treated sin costoura tuber\u00eda body with separately produced uni\u00f3ns to form a complete load-bearing sarta de perforaci\u00f3n component. The tuber\u00eda ends are upset to iNCrease the local cross-section, while the uni\u00f3ns are heat treated and machined with pasador and caja rotary shouldered uni\u00f3ns. The two parts are then joined by friction welding, followed by weld-zone tratamiento t\u00e9rmico, dimensi\u00f3nal verIFication, nondestructive examination, and final traceability control before release.<\/p>\n\n<p class=\"wp-block-paragraph\">petr\u00f3leofield steel tuber\u00eda de perforaci\u00f3n for petroleum and natural-gas perforaci\u00f3n uses an upset sin costoura tuber\u00eda body with separately fabricaci\u00f3nd weld-on uni\u00f3ns. This construction dIFfers from HDD perforar rods and DTH tuber\u00eda de perforaci\u00f3ns, which may use dIFferent body designs and joining methods. For API\/ISO tuber\u00eda de perforaci\u00f3n, the main manufacturing controls are the tuber\u00eda body, upset ends, uni\u00f3ns, friction-soldado interfaces, rotary shouldered uni\u00f3ns, 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 perforaci\u00f3n 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 tuber\u00eda-body strength, upset transition, tool-junta geometry, friction-weld zone, uni\u00f3n 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\">tuber\u00eda de perforaci\u00f3n proceso de fabricaci\u00f3n at a GlaNCe<\/h2>\n\n<p class=\"wp-block-paragraph\">A practical way to understand <strong>tuber\u00eda de perforaci\u00f3n manufacturing<\/strong> is to separate it into two production routes.<\/p>\n\n<p class=\"wp-block-paragraph\">The first creates the <strong>tuber\u00eda body<\/strong>. The second creates the <strong>tuber\u00eda de perforaci\u00f3n uni\u00f3n<\/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\">tuber\u00eda body<\/td><td>sin costoura tube verIFication \u2192 upsetting \u2192 tratamiento t\u00e9rmico \u2192 straightening \u2192 dimensi\u00f3nal and NDT inespecIFicaci\u00f3NCi\u00f3n \u2192 weld-end preparation.<\/td><td>Mechanical properties, body geometry, upset transition and material integrity.<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">uni\u00f3n<\/td><td>material preparation \u2192 tratamiento t\u00e9rmico \u2192 OD\/ID machining \u2192 shoulder machining \u2192 pasador\/caja uni\u00f3n machining \u2192 gauging.<\/td><td>uni\u00f3n strength, dimensi\u00f3ns 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 tratamiento t\u00e9rmico \u2192 NDT \u2192 uni\u00f3n verIFication \u2192 marking and release.<\/td><td>Body-to-tool-junta 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 tuber\u00eda de perforaci\u00f3n. ISO 11961 especIFicaci\u00f3nIFies steel tuber\u00eda de perforaci\u00f3n with <strong>upset tuber\u00eda-body ends and weld-on uni\u00f3ns<\/strong>, while API also treats tuber\u00eda de perforaci\u00f3n bodies, uni\u00f3ns, and completed tuber\u00eda de perforaci\u00f3n as distiNCt manufacturing elements within its certIFication framework. <\/p>\n\n<p class=\"wp-block-paragraph\">The exact equipment arrangement can dIFfer from one molino to another. For that reason, a professional description of the <strong>tuber\u00eda de perforaci\u00f3n 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=\"Incrustado de 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\">perforar_tuber\u00eda_Manufacturing_Route_tuber\u00eda_Body_Tool_junta<\/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\">tuber\u00eda Body Manufacturing: From sin costoura Tube to an Upset tuber\u00eda de perforaci\u00f3n Body<\/h2>\n\n<p class=\"wp-block-paragraph\">The tuber\u00eda body forms the long load-carrying section of the sarta de perforaci\u00f3n. During perforaci\u00f3n it is exposed to tension, par, internal fluid pressure, bending, and repeated cyclic loading. Its manufacturing route therefore has to control both material properties and dimensi\u00f3nal stability.<\/p>\n\n<h3 class=\"wp-block-heading\">sin costoura 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\">sin costoura steel tube<\/mark><\/a> selected for the required grado and dimensi\u00f3nal configuration.<\/p>\n\n<p class=\"wp-block-paragraph\">Before the tube enters upsetting and tratamiento t\u00e9rmico, the fabricante needs to retain its material identity and confirm that the starting condition corresponds to the production order. Important checks iNClude tube identIFication, heat or lot refereNCe, di\u00e1metro externo, espesor de pared, surface condition, and applicable material documentation.<\/p>\n\n<p class=\"wp-block-paragraph\">material traceability is maintained from the iNComing sin costoura tube through upsetting, tratamiento t\u00e9rmico, straightening, welding, and final inespecIFicaci\u00f3NCi\u00f3n. Heat\/lot identIFication and inespecIFicaci\u00f3NCi\u00f3n records remain linked to the finished tuber\u00eda de perforaci\u00f3n so that mechanical-test and NDT results can be verIFied against the physical junta during final release.<\/p>\n\n<h3 class=\"wp-block-heading\">tuber\u00eda de perforaci\u00f3n Upsetting Process<\/h3>\n\n<p class=\"wp-block-paragraph\">The <strong>tuber\u00eda de perforaci\u00f3n upsetting process<\/strong> modIFies the tuber\u00eda ends before uni\u00f3ns 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 tuber\u00eda end and creates the geometry needed for later uni\u00f3n to the heavier uni\u00f3n.<\/p>\n\n<p class=\"wp-block-paragraph\">After upsetting, the enlarged tuber\u00eda 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 uni\u00f3n.<\/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 tuber\u00eda body and the enlarged end.A pozo-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 tuber\u00eda body and the much heavier uni\u00f3n. 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 especIFicaci\u00f3nIFied tuber\u00eda de perforaci\u00f3n design, upset configurations can iNClude internal upset, external upset, or internal-external upset. The actual upset type should be taken from the ordered tuber\u00eda de perforaci\u00f3n configuration rather than inferred from tuber\u00eda tama\u00f1o alone.<\/p>\n\n<h3 class=\"wp-block-heading\">tuber\u00eda de perforaci\u00f3n tratamiento t\u00e9rmico<\/h3>\n\n<p class=\"wp-block-paragraph\">After upsetting, the tuber\u00eda body is heat treated to achieve the mechanical properties required for the especIFicaci\u00f3nIFied tuber\u00eda de perforaci\u00f3n grado. For queNChed-and-tempered tuber\u00eda de perforaci\u00f3n, heating, templado, and revenido are controlled as a continuous production sequeNCe. The finished condition is verIFied by the required mechanical-property and dureza tests rather than by furnace parametros 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 tratamiento t\u00e9rmico, the tuber\u00eda body is checked for mechanical properties, dureza, dimensi\u00f3ns, and straightness before weld-end preparation. grado requirements for E75, X95, G105, or S135 are verIFied against the applicable API 5DP \/ ISO 11961 requirements and the ordered product eespecIFicaci\u00f3nIFicaci\u00f3n.<\/p>\n\n<p class=\"wp-block-paragraph\">The <strong>friction-weld zone is heat treated separately later in production<\/strong>, after the uni\u00f3n has been soldado to the upset tuber\u00eda body and the weld flash has been removed. This local treatment controls the metallurgical condition of the soldado area before dureza verIFication and NDT. tuber\u00eda-body tratamiento t\u00e9rmico and weld-zone tratamiento t\u00e9rmico are therefore recorded as separate manufacturing operations.<\/p>\n\n<h3 class=\"wp-block-heading\">Straightening and dimensi\u00f3nal Control<\/h3>\n\n<p class=\"wp-block-paragraph\">tratamiento t\u00e9rmico is followed by geometry control because mechanical properties alone do not produce an acceptable tuber\u00eda de perforaci\u00f3n.<\/p>\n\n<p class=\"wp-block-paragraph\">The tuber\u00eda body has to maintain the straightness and dimensi\u00f3nal condition required for later weld preparation and final assembly. OD, wall condition, straightness, upset geometry, and alignment all affect how accurately the tuber\u00eda body can be joined to the uni\u00f3n.<\/p>\n\n<p class=\"wp-block-paragraph\">This matters because the finished tuber\u00eda de perforaci\u00f3n forms one rotating load path. A strong tuber\u00eda 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\">tuber\u00eda Body and Upset-End inespecIFicaci\u00f3NCi\u00f3n<\/h3>\n\n<p class=\"wp-block-paragraph\">Nondestructive examination must match the geometry being inespecIFicaci\u00f3nted.<\/p>\n\n<p class=\"wp-block-paragraph\">The long constant-section body can be examined using suitable automated methods such as ultras\u00f3nico or electromagnetic inespecIFicaci\u00f3NCi\u00f3n according to the applicable eespecIFicaci\u00f3nIFicaci\u00f3n and production plan. The upset end is more complicated because its espesor de pared and transition geometry dIFfer from the normal tuber\u00eda body.<\/p>\n\n<p class=\"wp-block-paragraph\">For this reason, it is better to describe inespecIFicaci\u00f3NCi\u00f3n by <strong>controlled area<\/strong>:<\/p>\n\n<ul class=\"wp-block-list\">\n<li>normal tuber\u00eda 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 tuber\u00eda receives UT\u201d does not by itself explain whether all critical regions have actually been examined.<\/p>\n\n<h2 class=\"wp-block-heading\">uni\u00f3n Manufacturing and uni\u00f3n Preparation<\/h2>\n\n<p class=\"wp-block-paragraph\">The uni\u00f3n 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>tuber\u00eda de perforaci\u00f3n uni\u00f3n<\/strong> is a separately fabricaci\u00f3nd, heat-treated, and machined component. It provides the enlarged uni\u00f3n section at each end of the tuber\u00eda and carries the rotary shouldered uni\u00f3n used to join one tuber\u00eda de perforaci\u00f3n 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-junta manufacturing begins with its own controlled material route.The uni\u00f3n experieNCes a dIFferent stress and desgaste condition from the main tuber\u00eda body. Its larger section contains the roscaed pasador or caja uni\u00f3n, shoulder, bore, and desgaste surfaces. It therefore has its own material, heat-treatment, dureza, machining, and inespecIFicaci\u00f3NCi\u00f3n history before welding.<\/p>\n\n<p class=\"wp-block-paragraph\">Finished tuber\u00eda de perforaci\u00f3n acceptaNCe iNCludes separate verIFication of the uni\u00f3n and rotary shouldered uni\u00f3n. Tool-junta mechanical properties, dureza, machined dimensi\u00f3ns, shoulder condition, and pasador\/caja gauging are checked independently from the tuber\u00eda-body grado 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 tratamiento t\u00e9rmico, <strong>uni\u00f3n machining<\/strong> establishes the dimensi\u00f3ns required for both uni\u00f3n performaNCe and final welding.Important machined areas iNClude the outside profile, internal bore, uni\u00f3n shoulder, pasador or caja region, and weld end.<\/p>\n\n<p class=\"wp-block-paragraph\">The shoulder deserves particular attention. In a rotary shouldered uni\u00f3n, the roscaed uni\u00f3n and shoulder work together during make-up and par transfer. A rosca can therefore be dimensi\u00f3nally close to eespecIFicaci\u00f3nIFicaci\u00f3n while poor shoulder condition still prevents satisf\u00e1brica uni\u00f3n performaNCe.The weld end also needs a controlled geometry so it can be aligned with the upset tuber\u00eda 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 tuber\u00eda provide the pasador and caja uni\u00f3n needed to build the sarta de perforaci\u00f3n.rosca machining must control more than the visible rosca form. uni\u00f3n behavior also depends on taper, pitch-related geometry, shoulder condition, alignment, mating coMPatibility, and the actual uni\u00f3n design.<\/p>\n\n<p class=\"wp-block-paragraph\">API especIFicaci\u00f3n 7-2 especIFicaci\u00f3nIFically covers <strong>roscado and gauging of rotary shouldered uni\u00f3ns<\/strong>. API published Addendum 3 to the second edition in September 2025, so buyers especIFicaci\u00f3nIFying API rotary shouldered uni\u00f3ns should identIFy the applicable edition and project requirements rather than relying on the generic phrase \u201cAPI rosca.\u201d <\/p>\n\n<p class=\"wp-block-paragraph\">That distiNCtion also helps keep est\u00e1ndars 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: tuber\u00eda de perforaci\u00f3n Friction Welding<\/h2>\n\n<p class=\"wp-block-paragraph\">The body and tool-junta routes meet during <strong>tuber\u00eda de perforaci\u00f3n friction welding<\/strong>.<\/p>\n\n<p class=\"wp-block-paragraph\">This is one of the most important stages in the entire proceso de fabricaci\u00f3n because the weld becomes a permanent part of the structural load path between the relatively thin tuber\u00eda body and the heavier uni\u00f3n.<\/p>\n\n<h3 class=\"wp-block-heading\">Preparing the Weld Ends<\/h3>\n\n<p class=\"wp-block-paragraph\">Before welding, the upset tuber\u00eda end and tool-junta 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 di\u00e1metro, 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 dimensi\u00f3nal 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 junta<\/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 material near the surfaces becomes plasticized, and axial loading displaces heated material from the interface. The process then completes the junta 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 parametros such as rotational speed, axial force, and cycle time are controlled and recorded for each junta. The actual settings depend on the tuber\u00eda-body and tool-junta configuration and are established by the qualIFied welding procedure rather than fixed as universal API values.<br\/>After welding, the junta proceeds to flash removal, weld-zone tratamiento t\u00e9rmico, and inespecIFicaci\u00f3NCi\u00f3n 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-soldado uni\u00f3n must maintain proper alignment between the tuber\u00eda body and uni\u00f3n so that axial load, par, 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 dimensi\u00f3nal feature.<\/p>\n<\/div><\/div>\n\n<p class=\"wp-block-paragraph\">Excessive eccentricity can shIFt the load path away from the tuber\u00eda de perforaci\u00f3n centerline and create higher localized cyclic stress during rotation and bending. For this reason, alignment of the tuber\u00eda body, weld interface, and uni\u00f3n is verIFied together with weld integrity before the assembly proceeds to subsequent tratamiento t\u00e9rmico and inespecIFicaci\u00f3NCi\u00f3n.<\/p>\n\n<h3 class=\"wp-block-heading\">Weld Flash Removal<\/h3>\n\n<p class=\"wp-block-paragraph\">Friction welding displaces plasticized material 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 inespecIFicaci\u00f3nted.<\/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 perforaci\u00f3n fluid must pass through the bore of the completed tuber\u00eda de perforaci\u00f3n without an unintended local obstruction.<\/p>\n\n<h3 class=\"wp-block-heading\">Weld-Zone tratamiento t\u00e9rmico<\/h3>\n\n<p class=\"wp-block-paragraph\">After friction welding and flash removal, the weld zone is heat treated separately from the tuber\u00eda body and uni\u00f3n. This controls the local metallurgical condition created at the soldado interface.<\/p>\n\n<p class=\"wp-block-paragraph\">The weld zone is then checked by dureza testing and nondestructive examination before final dimensi\u00f3nal and uni\u00f3n inespecIFicaci\u00f3NCi\u00f3n. Records for the <strong>tuber\u00eda body, weld zone, and uni\u00f3n<\/strong> remain traceable through final release according to API 5DP \/ ISO 11961 and the project eespecIFicaci\u00f3nIFicaci\u00f3n.<\/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 inespecIFicaci\u00f3NCi\u00f3n evideNCe.<\/p>\n\n<h2 class=\"wp-block-heading\">inespecIFicaci\u00f3NCi\u00f3n and Final Release<\/h2>\n\n<p class=\"wp-block-paragraph\">tuber\u00eda de perforaci\u00f3n inespecIFicaci\u00f3NCi\u00f3n continues throughout manufacturing, but final release confirms that the tuber\u00eda body, upset ends, uni\u00f3ns, friction-soldado zones, and roscaed uni\u00f3ns together meet the especIFicaci\u00f3nIFied product and purchase requirements. Final verIFication typically reviews dimensi\u00f3nal condition, alignment, mechanical-test results, applicable nondestructive examination, weld-zone condition, and pasador\/caja uni\u00f3n calidad before the finished junta 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 tuber\u00eda de perforaci\u00f3n should remain connected to the relevant starting material, heat-treatment lot, tool-junta manufacturing records, friction-welding records, post-weld tratamiento t\u00e9rmico, and inespecIFicaci\u00f3NCi\u00f3n results. This allows the completed junta to be evaluated according to its actual manufacturing history rather than only by its final appearaNCe or grado marking.<\/p>\n\n<p class=\"wp-block-paragraph\">Before release, the finished tuber\u00eda de perforaci\u00f3n is also checked for correct product identIFication, uni\u00f3n protection, and the documentation required by the applicable eespecIFicaci\u00f3nIFicaci\u00f3n and purchase order. The final acceptaNCe therefore confirms both the physical condition of the tuber\u00eda de perforaci\u00f3n and the consisteNCy of the records supporting its fabricaci\u00f3n and inespecIFicaci\u00f3NCi\u00f3n.<\/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 tuber\u00eda de perforaci\u00f3n 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-junta OD areas when desgaste protection is required. uni\u00f3n surface treatment may be especIFicaci\u00f3nIFied to support make-up performaNCe or handling. Internal coating can be added where the service and purchase eespecIFicaci\u00f3nIFicaci\u00f3n require it. Finished pasador and caja 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 tuber\u00eda de perforaci\u00f3n.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 uni\u00f3n surface treatments are order-especIFicaci\u00f3nIFic operations rather than universal steps in tuber\u00eda de perforaci\u00f3n manufacturing. Their application depends on the uni\u00f3n design, perforaci\u00f3n conditions, desgaste requirements, and project eespecIFicaci\u00f3nIFicaci\u00f3n.<\/p>\n\n<h2 class=\"wp-block-heading\">Manufacturing Control Across the tuber\u00eda de perforaci\u00f3n Load Path<\/h2>\n\n<p class=\"wp-block-paragraph\">A finished tuber\u00eda de perforaci\u00f3n transfers axial load, par, bending load, and perforaci\u00f3n vibration through the tuber\u00eda body, upset transition, friction-weld zone, uni\u00f3n, and rotary shouldered uni\u00f3n. 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 tratamiento t\u00e9rmico. Before friction welding, the upset tuber\u00eda end and tool-junta weld end are turned and faced so that the mating surfaces, bore, and di\u00e1metro externo are correctly aligned. After welding, internal and external flash is removed, the weld zone receives the especIFicaci\u00f3nIFied post-weld tratamiento t\u00e9rmico, and the junta is checked for weld integrity, dureza condition, alignment, and dimensi\u00f3nal conformity.<\/p>\n\n<p class=\"wp-block-paragraph\">The <strong>uni\u00f3n and uni\u00f3n<\/strong> are controlled separately through OD\/ID machining, shoulder machining, pasador or caja rosca cutting, and uni\u00f3n gauging. rosca profile, taper, lead, shoulder condition, bore alignment, and uni\u00f3n dimensi\u00f3ns are verIFied according to the applicable API 7-2 \/ ISO 10424-2 uni\u00f3n requirements, while the completed tuber\u00eda de perforaci\u00f3n is released according to API 5DP \/ ISO 11961 and the ordered project eespecIFicaci\u00f3nIFicaci\u00f3n.<\/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\/es\/contacto\/\">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 tuber\u00eda de perforaci\u00f3n ends upset before the uni\u00f3ns are soldado?<\/summary>\n<p class=\"wp-block-paragraph\">Upsetting iNCreases the cross-sectional area at the tuber\u00eda end and creates the transition required for joining the relatively thin tuber\u00eda body to the heavier uni\u00f3n. The geometry of this transition also affects alignment and local stress distribution during cyclic perforaci\u00f3n 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-soldado tuber\u00eda de perforaci\u00f3n require post-weld tratamiento t\u00e9rmico?<\/summary>\n<p class=\"wp-block-paragraph\">The tuber\u00eda body and uni\u00f3n may already have their required mechanical properties before assembly, but friction welding creates a new local metallurgical region between them. Post-weld tratamiento t\u00e9rmico controls this region before dureza 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 tuber\u00eda body and tuber\u00eda de perforaci\u00f3n uni\u00f3n fabricaci\u00f3nd separately?<\/summary>\n<p class=\"wp-block-paragraph\">Yes. They normally follow separate material, heat-treatment, machining, and inespecIFicaci\u00f3NCi\u00f3n routes before final friction welding. This is why tuber\u00eda-body records and tool-junta 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 tuber\u00eda de perforaci\u00f3n manufacturing document package?<\/summary>\n<p class=\"wp-block-paragraph\">The document package should allow the finished tuber\u00eda de perforaci\u00f3n to be linked to its material identity, heat-treatment and mechanical-test records, applicable tuber\u00eda-body and weld-zone NDT, tool-junta and rosca inespecIFicaci\u00f3NCi\u00f3n, uni\u00f3n verIFication, and final product marking. The exact scope should be defined in the purchase order and applicable API\/project eespecIFicaci\u00f3nIFicaci\u00f3n.<\/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>tuber\u00eda de perforaci\u00f3n manufacturing combines a heat-treated sin costoura tuber\u00eda body with separately produced uni\u00f3ns to form a complete load-bearing sarta de perforaci\u00f3n component. The tuber\u00eda ends are upset to iNCrease the local cross-section, while the uni\u00f3ns are heat treated and machined with pasador and caja rotary shouldered uni\u00f3ns. The two parts are then joined &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/www.drillpipes.com\/es\/how-is-tuberia-de-perforacion-fabricaciond\/\" class=\"more-link\">Leer m\u00e1s<span class=\"screen-reader-text\"> \u00abHow Is tuber\u00eda de perforaci\u00f3n fabricaci\u00f3nd?\u00bb<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":15813,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_eb_attr":"","footnotes":""},"categories":[104],"tags":[],"class_list":["post-15802","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"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 tuber\u00eda de perforaci\u00f3n fabricaci\u00f3nd? 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