I can´t see correctly the pipes created in cadworx into Microstation like attach files
It may depend on the type of elements these 3D items have been originally designed as within the CadWorx software. If they are 3D solids then you may need to look at the DWG Open Options relating to these type of solids and how they are defined.
RegardsAndrew BellTechnical SupportBentley Systems
Please also advise on the Version of MicroStation and Object Enablers used if any, it may be related Defect 855521 resolved in Update 9 see also the Help where with reference to the MS_DWG_OEBREP_AS_BREP variable to see if this has any bearing.
See also this thread
Regards
Carl Myhill
Technical Support Engineer
Bentley Systems