Description
Key Features
Extreme Collapse Resistance: Steel can withstand massive hydrostatic and soil pressure at depths exceeding 300–500 meters, where plastic might buckle.
High Tensile Strength: Ideal for long “strings” of pipe where the weight of the casing hanging in the hole is substantial.
Driveability: Steel is tough enough to be “driven” or hammered into the formation (common in cable-tool drilling), a process that would shatter uPVC.
Heat Resistance: The only viable choice for geothermal wells or environments where underground temperatures exceed the limits of plastic.
Durability in Unstable Rock: Best for boreholes drilled through shifting boulders or collapsing rock layers that require a rigid, unyielding shield.
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