Polypropylene pipes and fittings are today produced in a very wide range of diameters, therefore, two types of welding machines are used for their installation: mechanical (for larger) and manual. The release of small diameters PP pipes are carried out in bays, large ones are supplied with segments, whose length reaches 12 meters. Welding devices for polypropylene pipes and the necessary tools are not related to expensive equipment and may well be used for household needs.