What is the tool used to make a 90-degree turn with a pipe?

The tool used to make a 90-degree turn with a pipe is a pipe elbow. This type of fitting is specifically designed to redirect the flow of fluid within a piping system by allowing a change in direction. The 90-degree angle of the pipe elbow is particularly useful in installations where space is limited or where an efficient flow path is required without creating excessive bends that could hinder fluid movement.

A pipe tee, by contrast, is used to create a branching point in a piping system, allowing connection to another line. A pipe plug serves a different function, primarily used to seal off the end of a pipe, while a pipe union is utilized to connect two pipes together, allowing for easy disconnection without cutting into the pipe. The unique design and functionality of the pipe elbow make it the ideal choice for achieving a precise 90-degree turn in a plumbing or piping setup.