method for connecting a rohrverbindungsaufbaus sealed plastic and the rohrverbindungsaufbau

摘要

A method for sealingly coupling a pipe and at least one union made of plastic materials, comprising the steps of formation of a first element consisting of an end section (2, 3) of a pipe (T) with a substantially constant predetermined external diameter (DT), formation of a second element consisting of a union (4, 5) with a substantially tubular portion (6, 9) having a substantially cylindrical or slightly conical internal surface (7, 10) with an internal diameter (DR) smaller than the external diameter (DT) of the pipe, alignment of said first element and second elements (2, 3; 4, 5) along a longitudinal axis, relative rotation about the axis (L) and axial mutual compression of the two elements so as to generate heat as a result of friction and cause melting of the zone of mutual contact, stoppage of relative rotation of the abovementioned elements in order to cool the melting zone, causing solidification of the plastic material, so as to produce a hydraulically sealed joint between the two elements.