LC-300 series drop hammer impact testing machine using double tube structure, mainly by the table, prevent secondary impact mechanism, hammer body, lifting mechanism, automatic drop hammer mechanism, motor, reducer, electric control box, frame and other parts. It is widely used for measuring the impact resistance of various plastic pipes, as well as the impact measurement of plates and profiles. This series of testing machines are widely used in scientific research institutions, colleges and universities, quality inspection departments, production enterprises to do drop hammer impact test.