FIELD: machine building.
SUBSTANCE: invention relates to machine building, particularly to metal deformation process and can be used at manufacturing of heat exchanging electric power installations. Ribbed monometallic or bimetallic pipe is installed on section of the left and the right clips, and is rigidly fixed by external diametre ribs in grooves, allowing mirror pitch of ribbed pipe. Then on pipe on section of bending it is operated by radial axial force of compaction, applied to the right and to the left clips, herewith pipe is held from movement to the side of center of bend curvature by means of initial upset of pipe by compaction effort, providing to the flexible element no-load state up to beginning of bending of ribbed pipe.
EFFECT: there is increased quality.
5 cl, 5 dwg
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