There are different types of piping diagrams and they are process flow diagrams, piping and instrumentation diagram, orthographic pipe drawing, piping isometrics, and block flow diagrams. Piping diagrams are designed in a way that will be understandable for non-technical personnel.

The drawings would help to speed up the fabrication and erection work at the site. These drawings are schematic representations and they would define functional relationships in a piping system. The main purpose of a piping drawing is to communicate the information in a simple way.