charpy impact tester used to determine the resistance of metal materials to impact under dynamic load, and to judge the quality of the material under dynamic load. It is especially suitable for laboratories that continuously perform impact tests and metallurgical and mechanical manufacturing industries that do a lot of impact tests. Technical Specifications:   Model JB-300B JB-500B JB-750B Impact Energy 300 J , 150 J 500 J , 250 J 500 J / 750 J …