Experts in Mechanical Contracting & Fabrication

Your Trusted Source For Industrial Design, Fabrication, & Installation

With expertise in pipefitting, sheet metal, boilermaking, fabrication, and design services, Coenen Mechanical proudly serves a diverse array of businesses. As an industrial contractor specializing in fabrication, design, and the installation of process piping systems and sheet metal, we serve the pulp and paper, food, energy, and general manufacturing sectors.

Your Trusted Source For Industrial Design, Fabrication, & Installation

With expertise in pipefitting, sheet metal, boilermaking, fabrication, and design services, Coenen Mechanical proudly serves a diverse array of businesses. As an industrial contractor specializing in fabrication, design, and the installation of process piping systems and sheet metal, we serve the pulp and paper, food, energy, and general manufacturing sectors.

Our team, consisting of hundreds of skilled union tradespeople, takes great pride in delivering high-quality workmanship, ensuring that we meet the unique needs of our nationwide clients. Partner with us for reliable mechanical services based out of Appleton, WI, that elevate your operations!

Quality Craftsmanship, Unmatched Reliability

920-840-6245

Services Extending to a Variety of Industries

Our design, layout, fabrication, and installation services can be used by many industries, such as:

Converting & Packaging

We provide the piping and sheet metal systems that every facility relies on to manage glues, latex, compressed air, gas, water, pigments, and other fluids.

Food Processing

In food processing we emphasize stainless steel, as crafting equipment, structural steel, and piping is considered (by us) to be an art form. Our fabrication and field installation teams are among the best stainless craftspeople, prioritizing attention to detail and high-quality workmanship when constructing food-grade systems.

Pulp & Paper Mills

Our skilled tradespeople specialize in installing and repairing high-pressure steam, condensate, natural gas, and air piping systems to keep paper machines running smoothly. With many certified installers, we have completed hundreds of steam joint installations.

Water Treatment

We leverage our fabrication and installation expertise to remain competitive in building networks of piping systems for water treatment facilities of all sizes.

Power & Energy

Power & Recovery Boiler work is a core specialty at Coenen Mechanical. We support planned outages and emergency repairs with experienced boilermakers—handling tube and header replacements, pressure part modifications, refractory/duct repairs, and code-compliant welding to keep units safe, efficient, and reliable.

General Industry / Manufacturing Plants

Manufacturing plants utilize compressed air, natural gas, pneumatics, and hydraulics to produce goods. We focus on using carbon and stainless steel, PVC, HDPE, and other materials in these systems.