It is applied to the national industry standard GB/T9138-1988. HT-3000 heavy strength concrete test hammer is used to test the large and heavy component strength such as water conservancy engineering, port, railway tunnels, mines, Bridges, highways overloading road and airport runway and general building foundation beam.
1）Center guide rod adopts imported material, high precision, wear resistance
2）The cover adopts super duralumin with long service life and wear resistance.
|Tension spring stiffness||1.6kg/cm|
|Radius of spherical tip SR||55mm±1mm|
|The average rebound values on steel anvil Rm||63±2|