How do you make a 90degree bend pipe?

To make a 90-degree bend in a pipe, you can use a pipe bender specifically designed for the type and size of the pipe you're working with. First, measure and mark the desired bend location on the pipe. Position the pipe in the bender, aligning the mark with the bending point, and then apply consistent pressure to achieve the bend. If using a heat method for plastic pipes, heat the section to soften it before bending, ensuring a smooth and even curve.