Mixing and / or evaporation device and manufacturing method thereof

The invention relates to a mixing and / or evaporation device (7) for an exhaust system (3) of an internal combustion engine (1), in particular in a motor vehicle, with a pipe body (8), on whose one axial end a plurality of mutually circumferentially adjacent blades (9 are arranged) that protrude radially inwards and are made with respect to the axial direction. For cheap manufacture of the tubular body (8) is made together with the blades (9) from a single sheet body (11) by deforming.