After installation, you can open the catalog in Spec Editor

Create a new spec and add all components from the catalog to the spec. 

Load the specification created in Autodesk® AutoCAD® Plant 3D™ and use the available part in your projects.

Installation notes:

These catalogs are compatible with AutoCAD Plant 3D 2019 & higher versions. This installer will copy the catalog “Steel Pipe Fittings Flange Full Weight Catalog.pcat” into your content catalog location. The default location is: C:\AutoCAD Plant 3D 2026 Content\ CPak Common\Steel Pipe Fittings Flange Full Weight Catalog.pcat \ 

Uninstallation notes:

To uninstall this content pack, please go to Control Panel => Programs and Features => select the 

"Steel Pipe Fittings Flange Full Weight Catalog " => Uninstall