Mechanical Directory
DeWine Mechanical LLC
DeWine Mechanical is a trusted industrial contractor serving midwestern ethanol producers with the experience and capabilities needed to execute critical plant work. Based in Columbus, Nebraska, DeWine has built its business around the ethanol, biofuels, and biomass industries since 2005. The company provides general contracting, piping installation, pipe fabrication, structural steel, and millwright services tailored to demanding industrial environments. DeWine is equipped to support plant expansions, equipment setting, shutdown work, and other complex project scopes. With more than 20 years of experience reflected in its market presence, the team understands the urgency, precision, and safety standards required at ethanol facilities. Whether the need is ongoing mechanical support or a multi-million-dollar capital project, DeWine Mechanical is positioned to help ethanol plants execute with confidence.
ONEX Construction
Onex Construction’s Mechanical Construction team is experienced in erecting light, medium, and heavy structural steel and framing to support complex mechanical systems. Our craftsmen specialize in installing pre‑engineered metal building components, miscellaneous structural assemblies, and retrofit modifications to existing structures. With a focus on precision, safety, and efficiency, we deliver reliable steel erection and structural support solutions that integrate seamlessly with mechanical equipment, piping systems, and plant infrastructure.
Plaas, Inc.
PLAAS INC is a premier industrial construction partner delivering end-to-end solutions nationwide. From design-build and new construction to ASME code work, we provide a full suite of services including power and process piping, millwrights, tank repair, comprehensive plant maintenance, scheduled shutdowns and precision steel fabrication. With a commitment to safety and excellence, our expertise extends to confined space rescue, ensuring your facility operates at peak performance with minimal downtime.
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