process for pulling the ends of the tubes are connected by rullatura with paddles to pipes, in particular for heat exchangers, and walls compatible holesand dispositivoper achieve the process.

摘要

A method of removing a tube from a hole in a plate comprising cutting the inner surface of the tube helically to an adequate depth to form a shear line, separating an initial portion of the tube from the wall by ripping along the shear line, pulling the initial portion out of the hole and securing it to rotatable winding means (4), and rotating the winding means whereby the tube is ripped along the shear line, removed from the wall of the hole, and wound on the winding means (4). Fig. 1 shows a tap for making the helical cut. IMAGE