Suitable for the determination of ring stiffness of thermoplastic pipes with circular cross-section. It is also applicable to flat testing, ring flexibility testing, and weld tensile testing. satisfyPEThe requirements for testing standards for double walled corrugated pipes, wrapped pipes, and various plastic pipes are essential testing instruments for research institutes, quality inspection departments, and pipe manufacturers.

PCThe machine control software realizes the screen display of test force, peak test force, beam displacement, test deformation, and test curve, with intuitive and easy operation. Equipped with overload, overcurrent, and overvoltage protection functions, and equipped with a pipe inner diameter measurement system, it can accurately measure changes in the inner diameter of pipes. The transmission system is composed ofPCThe distributed control system composed of a machine and a microcontroller controls a fully digital AC servo motor, which drives the middle crossbeam to move up and down at the required speed according to the test standards. Pressure is applied to the pipe sample through the sample pressure plate, and the force value detection part adopts a segmented linear correction method to ensure the high accuracy and stability of the machine. This series of ring stiffness testing machines has passed the EU product certificationCEauthentication.

According to the standard "Determination of Ring Stiffness of Thermoplastic Pipes", the ring stiffness is determined by measuring the force and deformation of the pipe during constant speed deformation. Place the pipe sample horizontally, determine the compression speed of the flat plate based on the diameter of the pipe, and apply pressure to the sample vertically with two parallel flat plates. When a reaction force is generated during deformation, the diameter direction of the cross-section of the pipe sample is deformed to0.03di（diCalculate the ring stiffness when calculating the force for the inner diameter of the pipe sample

conform toGB/T9647、ISO9969、ASTM D2122Waiting for standard requirements.

1Environmental temperature:10℃～40Within the range of ℃;

2The relative humidity of the environment is30%—80%Within;

3In an environment without vibration or corrosive media around;

4Install and level correctly on a stable foundation;

5There is no strong magnetic field interference during work, and there is no strong convection in the surrounding air.