20kN/30kN/50kN/100kN/200kN/300kN Ring Stiffness and Flexibility Testing Machine, which is used in test with variety of metal, nonmetal, composite material and special shape tube, for stiffness, flexibility, tube section horizontal load test, compression to flat test, stiffness of tube bearing average load, deformation of radial stiffness test, creep age ratio test, continuous test(1000h/42d), deflection level and other mechanical property.

Ring stiffness Testing Machine, Thermoplastics pipes-Determination of ring stiffness, Glass fiber reinforced plastics mortar pipes, Steel reinforced spirally wound Polyethylene(PE) drainage pipe, Plastic bellows for prestressed concrete bridge, Corrugated metal ducts for prestressed concrete, Glass fiber reinforced polyvinyl chloride pipe and fittings, Glass fiber reinforced polyester plastic liner composite pipe and fittings for chemical industry.