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“We believe our personalized high quality service and commitment to customer satisfaction separates De Bella Mechanical, Inc. from our competition.”

– Paul J. DeBella, CEO / President

Process Piping

Since 1987, De Bella Mechanical, Inc., has been a leader in the Ultra High Purity Process Piping Industry. From Semiconductor Fabrication Facilities and tool installations, to cutting edge Bio-Pharmaceutical laboratories, De Bella Mechanical, Inc. delivers positive results with innovative solutions.


De Bella Mechanical, Inc. was founded in 1987 and has now enjoyed over seventeen years of continued success as a mechanical contracting company. We take pride in our ability to provide a wide range of services for a variety of different industries.


From our inception as a Ultra High Purity (UHP) Process Piping contractor serving the high tech microelectronics / semiconductor industry, DMI has evolved into a full service mechanical contractor serving the Biotech and Biopharmaceutical industries, as well as standard commercial HVAC and plumbing.


As the marketplace and the Silicon Valley have grown, so to have our capabilities. De Bella Mechanical, Inc. is a full service mechanical contractor working with all forms of piping and sheet metal applications, as well as providing preventative maintenance and 24-hour service to our clients.


De Bella Mechanical, Inc. is located in Santa Clara, California, the “Heart of Silicon Valley.” Our facility houses welding and fabrication bays for both sheet metal and piping, including a Class 100 clean room designed for pre-fabrication of custom high purity valve manifolds and gas panels. We have a large and diversified inventory of material and components on hand, so that we can provide quick turnaround on your project.