The TSC 90 is composed of a machine body featuring a selector for the welding depth of the different diameters, an ajustable clamp for locking the pipes, a self-centring clamp for locking pipes and fittings (different brands), a self-centring socket welder with electronic temperature control, a device for the maximum heating depth, three machine supporting legs, a tripod to support the pipe, a self sockets and spigots for socket fusion from 20mm to 90mm with steel case, and a set of centering and spigots in Aluminum, useful for realigning the pipe locking clamp with respect to the self-centering one. Standard Composition 1)Machine body complete with an electronic socket welder, fittings support and a “V” shaped pipe support2)Machine support (composed of 3 legs)3)Steel case complete with sockets & spigots from 20 to 90 mm, centering devices from 20mm to 90 mm, clamp adapters from 20mm to 75mm, and tool kit4)Pipe support trpod