Which method is commonly used for joining plastic pipes?

Solvent welding is a widely accepted method for joining plastic pipes, particularly PVC, CPVC, and ABS. This process involves applying a solvent-based adhesive to the surfaces of the pipes and fittings, which softens the material, allowing the surfaces to fuse together as the solvent evaporates. Once cured, this bond creates a strong, watertight seal that is integral for the integrity and performance of plumbing systems.

This method is favored for its simplicity and efficient application in both residential and commercial plumbing. The combination of the adhesive's chemical properties and the physical fusion of the materials ensures a high-quality connection that can withstand pressure and environmental factors.

In contrast, techniques such as soldering are suited for joining metal pipes and would not be applicable for most thermoplastic materials. Mechanical joining involves using fittings and clamps, which may not always be practical or effective for providing the seamless, bonded connection that solvent welding offers in plastic applications.