HCT506G  compression testing machine adopts the four-column frame structure after finite element analysis, and the whole machine has the characteristics of ultra-high rigidity. The HPU with closed loop force control has the function of constant stress control and load holding. Imported gear pump and servo motor, fast response, low heat, low noise, high control accuracy, within the scope allowed by the testing machine, the user can arbitrarily set the loading speed according to the requirements of the test; The force measuring system adopts high-precision pressure sensor, which can fully ensure the accuracy and reliability of the test. This series of testing machine is mainly suitable for the compressive strength test of high strength concrete, rock and static pressure elastic modulus test of concrete, and can also obtain the full curve according to needs, and can expand multiple displacement measurement channels according to user requirements.