Piping and Instrumentation Diagrams (P&IDs) are very important in industrial engineering because they show how processes run, how control instrumentation works, and how equipment is set up. These diagrams are very useful for designing, operating, analyzing safety, and planning maintenance for plants that process oil and gas, chemicals, power, and water. Making P&IDs by hand … Continue reading 11 Best P&ID Software Tools for Process Design Engineers in 2025