... pendulum angle: 150 3, the impact speed: 5.4m / s Function and characteristicsThe machine is mainly used for the determination ... under dynamic load.The machine is semi-automatic testing machine, easy operation, high efficiency, raise pendulum, impact, put down the pendulum ... and other industries of do a lot impact testing. JB-300B-type impact test machine meet the national standard GB/T3808-2002 ...