Complete lines for extraction of the rigid mandrel and wrapping/unwrapping of the hose. The rigid mandrel is extracted by means of a wagon moved by a chain or by a winch or by conveyer belts. Racks are applied to the frame of the entire line for storing the mandrels. Half way along the line, between the two tables, there is an orbital wrapping machine capable of putting on and removing two wraps at the same time and of applying the longitudinal marking tape.