Convert X_T to STP

Exporting Parasolid models to STEP format

It should be quite possible to convert CAD data from Parasolid formats (for example .x_t) ISO STEP product data format (.stp, .step), with any tool 3D modeling tool that supports both of these format.

The obvious choice would be Parasolid, but if you do not have access to the software you have to look for 3rd party alternatives. One of the best choices would probably be Autodesk Inventor that supports both formats and can work with them, but same applies to SolidWorks or CreoParametric. But you can find many suitable software for every platform, but Parasolid formats are typically not supported in free / open source solutions due to their proprietary nature.

Last viable option would be to some some dedicated CAD conversion and data translation conversion program like the Cross Manager or CAD Exchanger.