What type of copper tubing is a thick-walled tubing used primarily for underground water service?

Question

Quizplus · Accepted Answer

Type K copper tubing has the thickest wall of all the copper tubing types and is therefore best suited for underground water service. It can withstand high pressure and is less likely to corrode or degrade over time, making it a durable and reliable choice. Type L and M tubing have thinner walls and are better suited for aboveground applications. Type N is not commonly used for plumbing applications.

What Type of Copper Tubing Is a Thick-Walled Tubing Used