What is a common use of threaded pipe?

Threaded pipe is commonly used for joining sections because the threads create a tight seal that allows multiple lengths of pipe to be connected securely. This threaded connection facilitates both the assembly and disassembly of piping systems, making it practical for installation and maintenance. Threaded joints are particularly advantageous in environments where a strong, leak-proof connection is needed, as they can handle pressure and resist movement caused by thermal expansion or vibration.

In contrast, the other uses mentioned do not typically involve threaded pipe. Patching leaks is usually done with sealants or clamps rather than threading. Creating flexible connections is typically achieved through the use of flexible hoses or expansion joints. Enhancing insulation doesn't apply directly to threaded pipe, as insulation materials are usually applied outside the pipe rather than resulting from the threading itself. Therefore, the function of joining sections distinctly characterizes the utility of threaded pipe in plumbing and piping systems.