AutoCAD Plant 3D 2025 is a 3D design software tailored for plant design and engineering, offering tools for creating and modifying plant models, including piping, structural components, and equipment. It incorporates features for generating and editing Piping & Instrumentation Diagrams (P&IDs) and producing piping isometrics and orthographic drawings. The 2025 version introduces enhancements like customizable lap end types for 3D piping, automatic updates in Windows File Explorer when renaming or moving folders within the Project Manager, and the ability to display weld symbols in both Autodesk Docs Viewer and Navisworks.