The results show that it has much better performance than that of the baseline rod of the same mass, whose diameter is equal to that of the tubular part of the telescopic penetrator.

As a successively and locally plastic deformation process, ball spinning is applied in order to manufacture high-strength and high-precision thin-walled tubular part with longitudinal inner ribs.

The granulomatous lesions, regardless of location, result in enlargement of the part and often encroachment on adjacent tubular of cavernous structures.