1.Applications ans features-torsion testing machine ? Mainly used to test the capacity of impact resistance under dynamic load for metallic materials,in order to determine the property of the materials under the dynamic load. ? Automatically swing with remaining erengy after impact test, easy to operate, highly effective, reliably, especially suitable for laboratory with successive impact tests and metallurgical and mechanical manufacture industries with lots of impact tests. 2.Main specifications-torsion testing machine 1 Impact engergy 150J 300J 2 Pendulum pre-raising angle 150° 3 Distance between pendulum center to impact point(sample center) 750mm 4 Impact speed 5.2m/s 5 Span of impact specimen support 40mm 6 round corner of nipper jaw R(1.0-1.5)mm 7 round corner of impacting edge R(2.0-2.5)mm 8 impact knife thickness 16mm 9 Specimen size 10X10X55mm 19 Dimension 1500X850X1340mm 11 Weight 850kg 12 Power and voltage three-phase four-wire system 380V 50Hz