If you have saved customized line styles to the line styles library file, you can import the line styles into your catalog line styles library or any project-specific line styles library.
To import line styles from a line styles library file:
Open the project you want to import line styles into.
Access the line styles library. How to
In the Line Styles dialog, select File > Transfer.
In the Open dialog, select the linestyles.klb file (or whatever file you want to import line styles from), then click Open.
In the right pane of the Transfer dialog, select the custom line style you want to import, then click Import Item. Or, to import the entire list, just click Import All. The list in the left pane is updated.
Click OK.