Patent ID: 6920773

Claim:
A method for manufacturing a tube made of a non-ferrous material, comprising: feeding a tube billet in predetermined feeding direction through a first rolling station and a second rolling station, wherein the second rolling station downstream of the first rolling station with respect to the feeding direction of the tube and the second rolling station is so located relative to the first rolling station that simultaneously a first length segment of the tube billet is located in the first rolling station and a second length segment of the tube billet is located in the second rolling station and a length segment of the tube billet that leaves the first rolling station substantially immediately enters the second rolling station, working the tube billet in the first rolling station by rolling with conical rolls, so that mainly owing to deformation resistance, the temperature of the billet under operation rises up to the recrystallization range, at least on the working spot, working the tube billet at the second rolling station by rolling with a second set of conical rolls, and keeping at least the first and second length segments of the tube billet in non-oxidizing conditions.