Abstract
The features are reviewed and influencing parameters of a discharge circuit three kinds of pat- tern of a discharge gap, frequency of following of discharges on a purification process of steel tubes with a minor diameter 20, 50, 70 mm from strong depositions is determined. Is rotined, that only disrup- tive discharge of a layer of depositions results in their destruction. The selection of pattern of a dis- charge gap and parameters of a discharge circuit depends on the characteristics of depositions and tubes, technological methods and demanded characteristics of a manufacturing process.