About us


Our Story

Trebor is a full service industrial mechanical contractor capable of performing new construction, long or short term maintenance, or one day repairs.  Big enough to handle tough jobs, yet small enough to maintain a close working relationship with our customers.

Originally formed in 1974 by Robert W. Malone as an equipment rental business, Trebor industrial prosepered until 1984, when Robert K Malone and Robert J. Kalmes joined the organization.  Their intent was to actively involve the company in the construction side of industrial pipefitting.

Within two short years, the two took control of the company, becoming the principal shareholders.  Since then, Trebor has developed into a three-plus million dollar organization with a comfortable and loyal client base, always intent on expanding our base and proving why our customers continuously use our service.

Trebor is signatory to the Pipefitter's Association of Chicago Local Union 597, and Millwrights Local 1693.  A licensed corporation in the State of Illinois and is fully bonded and insured.

Our Customers