... testing machine, easy operation, high efficiency, raise pendulum, impact, put down the pendulum are the electrical control, and can use ... meet the national standard GB/T3808-2002 "test of pendulum type impact testing machines", according to national standard GB/T229 ... :1, the impact energy: 150J, 300J2, pendulum angle: 150 °3, the pendulum shaft center to the impact point distance: 800mm4 ...