The hanging conveyor machines are designed to be continuously loaded or single-loaded, depending on the type of treatment process. Machines intended for a single load are equipped with an overhead conveyor which makes it possible to move one hook inside the cleaning chamber, while the other hook is being loaded or unloaded outside. The elements are hung individually or in clusters on hooks. During the blasting process the hook rotates and oscillates to enable the abrasive to reach any point on the workpiece surface. Applications: derusting, descaling, painting surface preparation.