FIELD: machine building.
SUBSTANCE: welding mirror (5, 5') is equipped with heating devices and is matched with shape of end surface of pipe cut along radial side wall (6) of hollow profile. Welding mirror (5) in introduced into slit between pipes (1). Ends of pipes are pressed to the welding mirror to heat thermo-plastic material of pipe ends to temperature of welding thus facilitating plasticity of plastic materials on surface of a connection. Welding mirror (5) is removed from the slit between pipes (1). Heated pipe ends are pressed to each other. Thermo-plastic materials are welded together, form welding seam and cool it.
EFFECT: reduced time for preliminary preparation and reduced labour input for connecting thermo-plastic pipes fabricated by hollow profile spiral winding.
12 cl, 4 dwg
