What is the primary purpose of using a pipe wrench in plumbing?

The primary purpose of using a pipe wrench in plumbing is to tighten or loosen pipe fittings. This tool is specifically designed to grip the round surfaces of pipes securely, allowing the plumber to apply significant torque when turning the fittings. The teeth of the pipe wrench bite into the surface of the pipe, providing a firm grip that helps to either tighten connections or loosen those that are stuck or over-tightened.

Using other tools, such as a cutting tool, is intended for different tasks, such as cutting materials rather than adjusting fittings. Measuring distances is not a function of a pipe wrench, as this task is typically performed with tape measures or ruler-like tools. Holding pipes in place may be accomplished with other types of tools, like clamps or vises, rather than the adjustable grip mechanism that the pipe wrench provides. This specialized functionality defines the pipe wrench's role in the plumbing trade.