What does casing pipe mean in practice?
The pipe stabilizes the hole and isolates the shallower layers, leading water into the well through the designed filtration section.
When does it matter?
Leaky connections can allow surface water and contaminants directly into the intake.
Which solutions are related to it?
The material, diameter and connections are selected by the contractor for the well construction, and the tightness of the head and annular space is checked.