Manufacturing processes for pipes and rolling mill for carrying out this method

Manufacturing method for tubes (1), in particular for use in heat exchangers, the tube (1) is converted from an endless strip material in a rolling mill, wherein the endless belt material is perforated in the transverse direction of the belt and wherein the tubes (1) are separated at the perforations characterized in that the tubes (1) of at least two endless belts (a, b) are prepared wherein after perforating and shaping of the strips (a, b) an in-gain matching the perforations (3) in the bands (a, b) followed, after which the bands (a, b) are combined to the pipe.