METHOD AND DEVICE FOR MANUFACTURING CYLINDRICAL TUBULAR ELEMENTS SUCH AS BODIES OF FUTURE AND CYLINDRICAL TUBULAR ELEMENTS OBTAINED THEREBY

摘要

The present invention relates to a method and a device for producing a cylindrical tubular element forming a barrel body comprising at least one series of moldings and tubular element thus produced. invention, the formation of the series of moldings 20a, 20b is carried out in a single operation by rolling by positioning against one of the faces of the wall of the tubular element 11 a counter-roller and by applying progressively, on the opposite side of said wall and facing the counter-roller, a roller to a working position determining with the axis of said counter-roller an acute angle so that the moldings have a gradually increasing amplitude from one end of the cylindrical tubular element 11. / P