PROCEDIMENTO PER LA SALDATURA DI PARTI TUBOLARI ED ELEMENTO DI SALDATURA PER LA REALIZZAZIONE DEL PRODEDIMENTO

摘要

For welding tubular plastic parts (1) formed as a compound tube there is used a welding element (20) which is arranged with its inner peripheral surface (23) on projections (10) of the tubular parts (1) and reciprocally centers them. The welding element (20) has an annular part (21) with a heating coil (22) on its outer contour. The heating coil (22) has coil strands laid in a zig-zag shape which are curved in a U-shape and extend transversely to the peripheral direction of the annular part (21).