FIELD: construction engineering; erection and repair of pipe lines. SUBSTANCE: pouring unit includes heated chamber, sealing and calibrating flanges. Calibrating flange is provided with set of flexible plates located at spaced relation to pipe line according to preset thickness of mastic layer by means of inner stops whose height may be regulated. EFFECT: possibility of obtaining required thickness of layer of mastic irrespective of diametral fluctuations of pipe line and local defects (seams, dents. etc.); avoidance of cooling of chamber in case of stoppage of machine; enhanced reliability of corrosion protection of pipe line. 2 cl, 3 dwg
