It should be easy enough to find a software that can convert CATIA CATPART technical drawings and export them to IGES/IGS format. The first choice would be of course some of the Dassault Systemenes CAD programs, but you may also find some 3rd party programs that support CATIA format.
Convert CATIA part data to IGES 3D exchange format.
We found 9 software records in the database related to .catpart to .iges file format conversion.
Microsoft Windows software - convert catpart to iges on Windows
A CAD converter with huge format support
Convert from catpart file format
The tables with software actions are a good pointer for what a certain program does with various file types and often may give users a good hint how to perform certain file conversion, for example the above-mentioned catpart to iges. However, it is not perfect and sometimes can show results which are not really usable because of how certain programs work with files and the possible conversion is thus actually not possible at all.
A widely-used 3D animation application from Autodesk
A set of 3D modeling tools
A 3D CAD translation softwate
A dedicated CAD converter
Autodesk Inventor is modeling application used to create 3D digital prototypes.
A CAD visualizaton, analyzation and translating system
A CAD viewer program with conversion capabilities
Multiplatform software - convert catpart to iges on any platform
3D CAD/CAM tool for product development