Abstract: A shot blasting machine for shot blasting wire or rod-like material is of the kind comprising two centrifuge wheels in a closed housing which has an inlet for blasting shot or sand, means for conducting the wire rod material to be blasted through the housing between the centrifuge wheels, and an outlet for scale blasted from the wire or rod material. The centrifuge wheels are rotated in the same direction as each other, the region between the wheels where blasting takes place is divided into two sections by a wall, which permits the passage of the material to be blasted through the region, the shot or sand, in operation passing from one wheel to the other wheel in one section and from the other wheel to the one wheel in the other section, and a guide device being disposed adjacent each centrifuge wheel one in each section to direct the shot or sand from the wheel against the material to be blasted.