What’s the ring stiffness mean?
The ring stiffness of a tube can be defined as its ability to resist radial forces acting on it and its resistance to ring deflection and structural damage. Buried pipelines such as sewers and water pipes are subject to soil pressure, hydrostatic pressure and traffic load. Before burying, test to determine the ring stiffness of the pipe to ensure that the pipe material used can withstand the expected soil conditions and loads during burial. It is recommended to conduct a [...]