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The device is created to carry out high-quality center adjustment of pipe joints setting a required opening between the joints’ edges. The proposed device is totally autonomous and can be applied in all the climatic zones of Russia. The proposed device in the paper is adapted to the conventional method of major repairs with a partial replacement of pipes. The device excludes the use of internal clamps. To visualize the process, simulation 3D models have been developed. The use of the device will enable to improve the equipment for the repair and construction site. The device can be used both in the site and the field conditions. Applying the proposed device enables to weld pipe joints not only in the length but also in the strings. The outriggers are applied to spatially stabilize the device in the working process. The management of the device is done with a remote control console which enables to quickly prepare it for service.

The device for center adjustment of pipe joints to carry out welding works when building and major repairing main pipelines