FIELD: machine building.
SUBSTANCE: invention relates to machine building and can be used in production of metal pipes. Billet is sutured and directed to rack mill without bending. Stitched workpiece on the rack-and-pinion mill is first moved forward by at least one roll located in the roller carrier roller train, and / or by means of at least rollers of the first roller frame of the rack mill there created is frictional closure between the rack mill pusher and the billet, and / or loosely arranged on pusher stitched billet before pulling on rack-and-pin mill is subjected to bending at least rollers of roller racks of roller mill and / or rolled on pusher.
EFFECT: result is reduced amount of equipment used in making pipes.
46 cl, 5 dwg
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