You can import files into NX by using File => import => step, iges, parasolid, part etc…
But sometimes the import function seems empty. This is the result of
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Tag: Import
Select which model data will be imported. Unselected data won’t import. (Curves, Surfaces, Solids, Coordinate systems, Product data, PMI)
Read More Importing iges files in Siemens NX 11
Importing iges files in Siemens NX 11
You can have some problems while importing the stp files into NX. Options changes imported data.
Import From: Select stp file to import.
Import to Part:
Read More Importing step files in Siemens NX 11