FIELD: metallurgy, namely tube extrusion in presses without piercing system. SUBSTANCE: method comprises steps of placing and fixing along extrusion axis on extrusion ram: pressure pad, needle, centering ring, centering collar and piercer; joining and axially fixing centering collar and pressure pad by means of changeable sleeve; feeding blank to extrusion axis, pressing it out, displacing extrusion ram to initial position, removing changeable sleeve, piercing blank. Apparatus includes container, die, extrusion ram, pressure pad, needle, centering ring, centering collar and piercer. Centering collar and pressure pad are provided with shaped cylindrical extensions and they are joined by means of changeable sleeve. Outer diameter of extension of centering collar is less than inner diameter of extension of pressure pad. Changeable sleeve has two halves with annular turning and stepped protrusion on inner surface. Diameter of centering collar is less than that of pressure pad. Container has stepped diameter. EFFECT: possibility of pressing out blank independently upon diameter of pierced opening, enhanced accuracy of piercing axial opening. 2 cl, 5 dwg
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