Pipe spool drawings are blueprints used to fabricate a piping system. The drawings show the location of each pipe, fitting and valve in the system. They also indicate the size and type of each pipe and fitting. The purpose of pipe spool shop drawings is to provide a detailed, schematic representation of the piping system. This allows the fabricator to fabricate the system according to the engineer's specifications. A pipe spool shop drawing is a 3D model of a piping system. Pipe spool drawings can be used for a variety of purposes, such as manufacturing, engineering, and construction. Pipe spool drawings are created by a professional piping designer and can be used to help visualize the piping system.