FIELD: manufacture of plastic pipes and their welding. SUBSTANCE: the device has a frame with a pipe grip and a drive for displacement of the other pipe. The drive is made in the form of two self-contained devices. Each self-contained device of the pipe displacement drive is made with an individual loading spring and an individual locking mechanism. EFFECT: expanded process capabilities due to the increase of the length of welded pipes, and enhanced quality of welded pipes due to the enhanced precision of sagging force and reduced variation of it at welding of pipes of the same standard size. 1 dwg
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