Abstract: The system for joining tubular bodies for the transportation of pressurised or depressurised fluids comprises a metal tubular body (1), a plastic connection body (2) in which an end (1a) of said metal tubular body (1) is embedded, the portion of metal tubular body (1) closest to said end (1a) being provided with at least one opening (3) filled with the plastic material of the connection body (2). According to the invention, said opening (3) has one side, proximal to said end (1a) having a first part (4) lying on a plane normal to the axis (X-X) of the metal tubular body (1). The joining system according to the invention achieves optimal distribution of tensions, relative to the area of the tubular body (1) and of the body (2) surrounding the openings (3), produced by the pressure of the fluid that runs in the piping, and therefore ensures that the joint lasts longer and ensures a better seal.

Abstract: Male and female components joined to respective pipes are coupled by an annular element (21) which embraces the male component and engages it in a transverse plane, and at least two coupling elements (30, 30′) for hooking the female component, each having two parallel hooking arms (31) in the form of plates which lie in planes parallel to the axial plane (P) passing through the longitudinal center line of the coupling elements (30, 30′). Flanges (41) for the coupling elements are joined to the annular element (21) in planes parallel to the planes defined by the hooking arms (31), and these carry a transverse pin (42) for securing the hooking arms (31) in an axial direction. Axial traction applied to the coupling elements (30, 30′) firmly join the male and female components together. The ball-and-socket joint obtained is able to better support high pressure.

Abstract: The joint comprises two components to be coupled together, namely a male component and a female component joined to respective pipes. These two components are coupled together by a third component which comprises: an annular element (21) which embraces the male component and engages it in a transverse plane, and at least two coupling means (30, 30′) for hooking the female component, each comprising two parallel hooking arms (31) in the form of plates which lie in planes parallel to the axial plane (P) passing through the longitudinal centre line of the coupling means (30, 30′). In addition there is provided a pair of flanges (41) for each coupling means (30, 30′) in the form of plates firmly joined to the annular element (21) and lying in planes parallel to the planes defined by the hooking arms (31), said pair carrying a transverse pin (42) for securing the hooking arms (31) in an axial direction.