In pipe repair, which material is expanded by steam to fit inside a pipe?

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Multiple Choice

In pipe repair, which material is expanded by steam to fit inside a pipe?

Explanation:
Expanding material with heat to snugly fit inside an existing pipe is a technique used in trenchless pipe rehabilitation. A PVC liner is inserted into the damaged pipe and then steam is applied to heat the PVC. As it softens, the liner expands to press firmly against the interior walls, creating a tight seal and a smooth inner surface. Once it cools and hardens, it forms a durable new lining that restores flow and prevents leaks. Other options don’t fit this method: fiberglass sleeves are typically rigid and not designed to be steam-expanded to fit the interior; copper tube isn’t expanded by steam to fit inside a larger pipe in this repair context; rubber liners aren’t the material used in this steam-expanded lining process.

Expanding material with heat to snugly fit inside an existing pipe is a technique used in trenchless pipe rehabilitation. A PVC liner is inserted into the damaged pipe and then steam is applied to heat the PVC. As it softens, the liner expands to press firmly against the interior walls, creating a tight seal and a smooth inner surface. Once it cools and hardens, it forms a durable new lining that restores flow and prevents leaks.

Other options don’t fit this method: fiberglass sleeves are typically rigid and not designed to be steam-expanded to fit the interior; copper tube isn’t expanded by steam to fit inside a larger pipe in this repair context; rubber liners aren’t the material used in this steam-expanded lining process.

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