Shot-blasting is performed in two stages. At the first stage universal access shot-blaster batch-type chamber MODEL 42834, manufactured by the plant “Amurlitmash”, is applied. It is suitable for clarification of iron and steel castings from burning and scale after heat treatment. Chamber construction provides means for clarification of thin-shelled, subject to breakage, castings of any degree of complexity. In necessary, at the second stage abrasive blasting chamber (of discharge type) KCO-130-Н-СФ-Р “Velikoluksky Mechanical Plant” (Russia, 2010 year of manufacture) is applied for out-of-the-way places (for example, impeller channels for centrifugal pump)..