FIELD: connection of pipes with increased resistance to pressure. SUBSTANCE: coupling is moved on one pipe; each of them includes one or several layers of reinforced fibers. End surfaces are cleaned and are pressed to heating plate, after which plate is removed and end surfaces are pressed to each other forming inner and outer rolls; overflow in outer direction ensures formation of weld seam in inner layer at absence of reinforcing fibres. Outer roll is removed and coupling is moved on seam which is connected to electric power supply source to effect fusion welding with outer surface of pipe. EFFECT: avoidance of fittings in connecting the reinforced thermoplastic pipes. 7 cl, 6 dwg
