If you have SolidWorks Subscription Support, you can download (FREE) Merry's comprehensive Piping (Routing) library of pipes, flanges and fittings (welded and threaded) from the SolidWorks Subscription site, where you will find 'Routing Resources' - Note: you must already be logged in to your 'Customer Portal' on the SolidWorks website for this link to work.

To download a pictorial catalogue of this piping library click this link - Piping Library Catalogue.