Abstract: A method for making sucker rods composed of a rod body (1) and end heads (2), consisting in upsetting the rod body end portions (8) carried out at a temperature that precludes softening of the rod body (1) metal, a thickening (9) being formed on each of the end portions (8), the width of the thickening in a direction perpendicular with the rod body (1) axis being equal to or in excess of the head (2) maximum diameter in the weld joint place, while its length exceeds the width of the heat-affected area (17) involved in the welding process. A transition portion (10) shaped as a solid of revolution has a cross-section which smoothly and continuously decreases from the thickening (9) towards the rod body (1). The upsetting procedure is followed by friction welding of each of the end heads (2) together with the thickening (9) on the rod body and portion (8) and by turning the weld joint zone.

Abstract: A method for making sucker rods comprises pressure-welding of the central rod-body blank with the rod-end blanks made from different materials, and upsetting of the end heads (8 and 9) from the welded sucker-rod blank. The length of the rod-end blanks is so selected that the weld joints (6, 7) be established, after the upsetting procedure, across the maximum cross-section of the sucker-rod heads (8 and 9).