DETERMINATION OF RESISTENCE TO EXTERNAL BLOWS BY THE ROUND
(TS EN 744 / TS EN ISO 3127)

This test encompasses a method for determining the outer impact resistance along the circumference of round cross-sectioned thermoplastic pipes. The test is carried out at a temperature of 0 ° C for a certain period of time and at a specified time interval. Impact is applied to predetermined zones along the outer circumference of the pipe by reducing a mass from a certain height. The occurrence of the damage is regarded as the actual impact ratio (TIR) of the part or production unit. Here the greatest value of TIR is 10%.