Ongoing 3d Industrial Design Work

I'm looking for a graphics designer that can re-create the equipment in the attached images and add some cad models that I have developed to create a scene.

I'm looking for a long-term relationship that provides quick turn around on the many small jobs I get. These graphics are for marketing only so accuracy is not important, as long as they convey the spirit of the equipment, and the renders look great. A lot of the work we do is engineering equipment marketing so having a technical background will be a plus. If you can draw equipment interconnects such as pipe, electrical, cable tray that will also be a plus. Having done design work for industrial equipment in the past will be a benefit.