Which method is typically used for joining PVC pipe?

The method typically used for joining PVC pipe is solvent cement. This process involves applying a special adhesive that chemically bonds the pipes together. The solvent in the cement partially dissolves the surface of the PVC, allowing the pieces to fuse as the cement sets. This creates a strong, watertight seal that is essential for the integrity of plumbing systems.

Solvent cement is specifically formulated for use with PVC and ensures a quick and reliable installation, making it the preferred method for connecting PVC pipes in most plumbing applications. This method is not only effective but also relatively simple to execute, requiring minimal tools and preparation compared to other methods.

In contrast, welding, soldering, and threading are techniques more commonly associated with other types of piping materials, such as metal. These methods involve different processes and equipment that are not suitable for PVC. Thus, solvent cement stands out as the correct approach for joining PVC pipes due to its chemical bonding properties and ease of use.