FIELD: metallurgy.
SUBSTANCE: invention refers to metal treatment by pressing, particularly to the bending of coated pipes for pipelines. The device has the main part positioned in the tube with a running gear for moving in the tube and at least three contact elements for establishing contact with the inner wall of the pipe for applying the bending force. Wherein at least two contact elements are provided for on one side of the main part at the ends of the main part, and at least one contact element is located on its opposite side. At least one of the contact elements by means of a force applying element is made movable relative to the main body in the direction towards the inner pipe wall. To carry out the bending process for such pipes, the device is inserted into the tube, placed in the places of bending, and by means extending the movable contact element, the pipe is bent in this place.
EFFECT: invention provides for improved accuracy of pipes bending.
18 cl, 12 dwg
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