→spring will deform under the action of external force and will return to original condition after unload of force, which is called restoring function of spring. According to the features of external force, it is divided into tensile spring, compression spring, bending spring,spiral spring, torsion spring, gas spring, leaf spring, suspension spring, shaped spring, etc.
→spring high speed tensile testing machine, spring high speed compression testing machine, spring high temperature fatigue testing machine, spring low temperature fatigue testing machine, single column spring tensile and compression testing machine, two columns spring tensile and compression testing machine, digital spring tensile and compression testing machine, computer control spring tensile and compression testing machine, touch spring testing machine, spiral spring testing machine, gas spring testing machine, nitrogen spring testing machine, LCD spring testing machine, multi-station spring tensile and compression testing machine, locomotive and car suspension spring testing machine, clock spring testing machine, floor spring testing machine, swinging door fatigue testing machine, 100kN spring tensile and compression testing machine, 20kN multi-station spring tensile and compression testing machine, 50kN high-low temperature spring tensile and compression testing machine, 300kN leaf spring compression testing machine, 600kN large spring testing machine, 50kN load switch spring testing machine, 6000N circuit break spring testing machine, 30kN multi-station spring fatigue testing machine, 300kN gas spring tightness testing machine, 300kN gas spring stiffness testing machine, 10kN ripple spring testing machine, 500N battery spring testing machine, 8000N sofa spring testing machine, 100kN switch spring testing machine, 200N.m full automatic spring torsion testing machine, 2000N.m spring torsion fatigue testing machine, 5000N torsion bar spring fatigue testing machine, 200kN spring transverse load testing machine, 100kN spring casing centralizer testing machine, 120kN buffer spring testing machine.