A tube scraping device including: - a body adapted to rotate about a pivot pin to be arranged parallel to an axis of the tube, the body having two jaws (13a, 13b) adapted to rotate about said pivot pin between: -- a stable open position enabling the body to be disposed around the tube and removed therefrom; -- a stable closed position in which the jaws (13a, 13b) are closer to the tube than in the open position, the jaws (13a, 13b) including a first part of driving means (15a, 15b) adapted to drive said jaws (13a, 13b) in rotation about the tube while the jaws are in the closed position, said body holding jaw (13a, 13b) maneuvering means, for moving said jaws from the stable open position to the stable closed position, and the reverse, and tube scraping means adapted to come into contact with an external surface of said tube with a view to scraping it, while said jaws (13a, 13b) are in the closed position, the scraping means being mounted so as to rotate with the body, and therefore with the jaws (13a, 13b), - a second part of the driving means (15a, 15b) adapted for engaging with the first part of the driving means (15a, 15b), with a view to causing, in an engaged position, said rotation of the jaws (13a, 13b), - and rolling means mounted at an internal surface of the jaws (13a, 13b), away from the scraping means, so as to cause said jaws (13a, 13b) to roll around an external surface of the tube, while said jaws (13a, 13b) are in the closed position. - a body adapted to rotate about a pivot pin to be arranged parallel to an axis of the tube, the body having two jaws (13a, 13b) adapted to rotate about said pivot pin between: -- a stable open position enabling the body to be disposed around the tube and removed therefrom; -- a stable closed position in which the jaws (13a, 13b) are closer to the tube than in the open position, the jaws (13a, 13b) including a first part of driving means (15a, 15b) adapted to drive said jaws (13a, 13b) in rotation about the tube while the jaws are in the closed position, said body holding jaw (13a, 13b) maneuvering means, for moving said jaws from the stable open position to the stable closed position, and the reverse, and tube scraping means adapted to come into contact with an external surface of said tube with a view to scraping it, while said jaws (13a, 13b) are in the closed position, the scraping means being mounted so as to rotate with the body, and therefore with the jaws (13a, 13b), -- a stable open position enabling the body to be disposed around the tube and removed therefrom; -- a stable closed position in which the jaws (13a, 13b) are closer to the tube than in the open position, the jaws (13a, 13b) including a first part of driving means (15a, 15b) adapted to drive said jaws (13a, 13b) in rotation about the tube while the jaws are in the closed position, said body holding jaw (13a, 13b) maneuvering means, for moving said jaws from the stable open position to the stable closed position, and the reverse, and tube scraping means adapted to come into contact with an external surface of said tube with a view to scraping it, while said jaws (13a, 13b) are in the closed position, the scraping means being mounted so as to rotate with the body, and therefore with the jaws (13a, 13b), - a second part of the driving means (15a, 15b) adapted for engaging with the first part of the driving means (15a, 15b), with a view to causing, in an engaged position, said rotation of the jaws (13a, 13b), - and rolling means mounted at an internal surface of the jaws (13a, 13b), away from the scraping means, so as to cause said jaws (13a, 13b) to roll around an external surface of the tube, while said jaws (13a, 13b) are in the closed position.