Torsion testing machine series Application WNJ series materials torsion testing machine is used for torsion test of metal materials, nonmetallic materials, composite materials and components. Computer controlled performance TESTING I SHINE Application SXN series Metal Torsion Tester is mainly used for testing the plasticity of metal wires and ropes under torsion condition. Surface flaws of steel wires may be shown during the testing process. ©_HliatONG TEST