Free-flowing machine with rollers is used for continued shotblasting of the corroded layer and filing from sheet metal, sections, simple constructions and small shafts. Treated objects move through the machine on a roller conveyor. One type of shotblasting machine with roller conveyor is free-flowing machine for blasting cylindrical elements. This machine is used for continued shotblasting of the corroded layer and filings from tubes' surface, round sections, gas steel bottles and other cylindrical elements. Treated objects move throug the machine on a conical cylindrical conveyor or on conveyor with askew wheels. These machines may be built into highly productive lines for basic colour application, including drying chamber, automatic colouring chamber and drying tunnel.