Learn about the differences between the STEP interfaces available in CATIA for companies to exchange 3D models with product manufacturing information (PMI) and composites data.
CATIA STEP Core Interface ST1
![](https://www.inceptra.com/wp-content/uploads/2020/12/Using-CATIA-STEP-Interfaces-492x274.png)
Learn about the differences between the STEP interfaces available in CATIA for companies to exchange 3D models with product manufacturing information (PMI) and composites data.