What tool is designed to cut threads on the end of pipes?

The tool specifically designed to cut threads on the end of pipes is indeed a pipe reamer. A pipe reamer prepares the end of the pipe for easy connection by creating clean and precise threads. This is crucial for ensuring that fittings can be easily attached and securely fastened, preventing leaks and ensuring the integrity of the plumbing system.

The design of a pipe reamer allows it to effectively shape the metal of the pipe's end into threads that will match standard fittings. This process is essential in both plumbing and electrical conduit applications, where threaded connections are used frequently.

The other tools listed serve different functions: a bow wrench is used for gripping and turning pipe or other cylindrical objects but does not cut threads. A thread cutting tool is a more generalized term that could refer to various types of tools, including taps and dies, but it does not specifically match the intended use of a pipe reamer. A screw pitch gauge is a tool used to measure the pitch of threads on screws or bolts, not to cut threads.