Which of the following methods is typically used for joining plastic pipes?

Solvent welding is the correct method for joining plastic pipes. This process involves applying a solvent adhesive to the surfaces of the pipes being joined, which softens the plastic, allowing the pipes to fuse together as the solvent evaporates. This creates a strong, permanent bond that is essential for a leak-proof connection in plumbing systems.

In practice, solvent welding is commonly used with PVC, CPVC, and ABS pipes, making it a preferred method due to its effectiveness in forming seamless joints without the need for additional hardware or mechanisms. The technique is generally straightforward and requires minimal tools, which further enhances its appeal in plumbing applications.

Understanding this method is crucial for students in plumbing, as it helps ensure proper assembly techniques are employed for reliable plumbing installations.