Export pipes to dwg

I want to export my pipes to a dwg-file and keep the same symbology. Is it even possible to have attributes such as pipe dimension in a dwg-file?

I have tried to do it from ArcMAP by right clicking on Water Pipes /Data /Export to CAD
This gives a dwg-file of pipes without any attributs that can be used for the wantet symbology.

As a matter of fact the dwg exported from ArcMap contains attribute data in form of Xrecords...

[url=http://www.cadenhancement.com/2009/05/xrecords-what-are-they.html]http://www.cadenhancement.com/2009/05/xrecords-what-are-they.html[/url]

...which have been a standard feature of dwg-files for a long time, but only accessible to developers.

ESRI offers a free plug-in for AutoCAD called ArcGIS for AutoCAD...

[url=http://www.esri.com/software/arcgis/arcgis-for-autocad]http://www.esri.com/software/arcgis/arcgis-for-autocad[/url]

...which allows you to use those Xrecords within AutoCAD to change your symbology. I don't use AutoCAD myself, so I can't give you any personal opinion about the performance of the plug-in.

Try http://www.guthcad.com/arcv2cad.htm