... determine the material properties under dynamic load.The machine is semi-automatic testing machine, easy operation, high efficiency, raise pendulum, ... industries of do a lot impact testing. JB-300B-type impact test machine meet the national standard GB/T3808 ... machine weight: 450Kg14, Power: AC Three-phase 380V ± 10% 50HZ 5A15, environmental conditions: No corrosive media environment, no vibration, ...