HY4220 Ring Stiffness Tester is used to determine the ring stiffness of thermoplastics pipes having a circular cross section. It is widely applied in ferrous metallurgy, construction and building materials, aerospace, machine manufacturing, wire and cable, rubber and plastics, textile, household appliance and other industries, and also research institution, colleges & universities, industrial and mining enterprises and other departments.

1. Panasonic (Japanese) AC servo motor, high precision screw without clearance

2. High precision photoelectric encoder to accurately determine the displacement

3. Highly automated, can perform different test standards by using different clamps

4. Software analysis function: tensile strength, bending strength, yield strength, elongation, peeling strength, etc.

5. With professional software, can select several test curves to printout: stress-strain, load-strain, load- time, load-displacement, displacement-time, deformation-time, etc.

6. Safety protection function: limitation protection, over-load protection, over-current protection, over-voltage protection, etc.