GB/T 14152-2001 stipulates the hour-hand swirl/spin method for the external impact performance test of thermal plasticity plastic pipes. Fix the pipe sample horizontally on the equipment, and use the specified mass and size of the punch to impact the pipe in sequence along the circumference at a specific interval angle. Evaluate the external impact resistance by recording the number of impacts, observing whether the pipe is broken, etc. The performance standard specifies the specifications of the test equipment, the parameters of the punch, the angle and height of the impact, etc., to provide a unified specification for accurately testing the impact resistance of thermal plasticity plastic pipes, helping to ensure the Reliability of the pipe in actual use.