You can create and add parts to a pipe line that are not in the pipe spec.
After a custom component is added to the line, you can modify properties in the properties palette. Dimensions are modified in the properties palette for parametric components.
Piping components that are not in the pipe spec are either custom parts or placeholder parts. A custom part does not have a relationship with a pipe spec. A placeholder part is added when the pipe spec is not complete.
In addition to direct placement, placeholder parts can be created during a spec update if a part is orphaned from a spec. This problem occurs when an incompatible change is made to the part size, or if the part is removed from the pipe spec.
You can add three types of components to a pipe line:
When an item is added to the pipe spec, the part geometry is copied from the catalog to the pipe spec. Custom and placeholder parts are drawn with simplified geometry.