Piping engineers design and supervise the building of piping systems that transport gas, oil, water, or sewage. Job duties include surveying work sites and evaluating environmental stress, determining project scope and cost, drafting layout plans and blueprints, and selecting materials for pipes and components for the construction of piping systems. Piping engineers typically use Computer Assisted Design (CAD) software to draft blueprints. In addition to technical and drafting skills, they also need strong project management skills to run projects efficiently from start to finish.