A tube for transporting fluids having two mouths, wherein the two mouths are a male mouth and a female mouth, and a wall, comprising: - A first section with an annular protrusion or reinforcement and the male mouth on one end, - A second section, following the first section, with the female mouth on the end opposite the male mouth defining a chamber, and with an inner diameter slightly larger than the outer diameter of the first section, wherein: - Said chamber is located on the female mouth, for housing a sealing gasket, and is determined by a lower wall, perpendicular to the wall of the tube contiguous to the chamber, and a side wall, the lower wall and the side wall perpendicular between them and coincident with the tube wall, said chamber having an inner diameter larger than the outer diameter of the second section, and - Said annular protrusion or reinforcement is located on the exterior of the first section, and determined by a lower wall inclined with respect to a perpendicular to the wall of the tube contiguous to the protrusion, an upper wall perpendicular to the wall of the tube contiguous to the protrusion, and a side wall, wherein the lower wall, the upper wall and the side wall are coincident with the tube wall, the upper wall and the side wall perpendicular between them, said side wall of said protrusion having an outer diameter equal to the outer diameter of the chamber, Wherein the distance between the protrusion and the male mouth is smaller than the sum of the length of the second section and the length of the chamber with the objective that the lower wall of the protrusion of a first tube will lean on the upper ends of the side wall of the chamber of a second tube, when inserting the male mouth of a first tube inside the female mouth of a second tube. - A first section with an annular protrusion or reinforcement and the male mouth on one end, - A second section, following the first section, with the female mouth on the end opposite the male mouth defining a chamber, and with an inner diameter slightly larger than the outer diameter of the first section, wherein: - Said chamber is located on the female mouth, for housing a sealing gasket, and is determined by a lower wall, perpendicular to the wall of the tube contiguous to the chamber, and a side wall, the lower wall and the side wall perpendicular between them and coincident with the tube wall, said chamber having an inner diameter larger than the outer diameter of the second section, and - Said annular protrusion or reinforcement is located on the exterior of the first section, and determined by a lower wall inclined with respect to a perpendicular to the wall of the tube contiguous to the protrusion, an upper wall perpendicular to the wall of the tube contiguous to the protrusion, and a side wall, wherein the lower wall, the upper wall and the side wall are coincident with the tube wall, the upper wall and the side wall perpendicular between them, said side wall of said protrusion having an outer diameter equal to the outer diameter of the chamber, Wherein the distance between the protrusion and the male mouth is smaller than the sum of the length of the second section and the length of the chamber with the objective that the lower wall of the protrusion of a first tube will lean on the upper ends of the side wall of the chamber of a second tube, when inserting the male mouth of a first tube inside the female mouth of a second tube. - Said chamber is located on the female mouth, for housing a sealing gasket, and is determined by a lower wall, perpendicular to the wall of the tube contiguous to the chamber, and a side wall, the lower wall and the side wall perpendicular between them and coincident with the tube wall, said chamber having an inner diameter larger than the outer diameter of the second section, and - Said annular protrusion or reinforcement is located on the exterior of the first section, and determined by a lower wall inclined with respect to a perpendicular to the wall of the tube contiguous to the protrusion, an upper wall perpendicular to the wall of the tube contiguous to the protrusion, and a side wall, wherein the lower wall, the upper wall and the side wall are coincident with the tube wall, the upper wall and the side wall perpendicular between them, said side wall of said protrusion having an outer diameter equal to the outer diameter of the chamber, Wherein the distance between the protrusion and the male mouth is smaller than the sum of the length of the second section and the length of the chamber with the objective that the lower wall of the protrusion of a first tube will lean on the upper ends of the side wall of the chamber of a second tube, when inserting the male mouth of a first tube inside the female mouth of a second tube.