What type of pipe is known to be flexible?

PVC, or polyvinyl chloride, is known for its flexibility, which makes it a popular choice for various plumbing and sewer applications. Its inherent properties allow it to bend under pressure, absorb shock, and adjust to soil movement without breaking, unlike more rigid materials. This flexibility helps prevent leaks and structural failures, especially in environments with shifting soil or ground movement.

In contrast, vitrified clay, concrete, and cast iron pipes are characterized by their rigidity and strength, which can be advantageous in certain scenarios but limits their ability to accommodate movements in the surrounding environment. Consequently, choosing PVC for applications requiring a more adaptable piping solution can lead to improved performance and longevity.