FIELD: metallurgy.
SUBSTANCE: invention relates to the treatment of metals by pressure and can be used in the manufacture of drill pipes for horizontal directional drilling having ends that are up and down. At least one end of the untreated pipe is heated to a predetermined forging temperature and precipitated by applying the pressure of the hydraulic forging press to produce a deposited end with inner and outer deposition diameters. Portion of the deposited end of the pipe with the internal diameter of the deposition is designed to form an inner taper. In this case, the ratio of the outer diameter of the deposition to the internal diameter of the deposition at the portion of the internal taper exceeds a predetermined value.
EFFECT: expansion of technological capabilities of the method.
13 cl, 13 dwg, 1 tbl
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