The DDD Story

DDD is one of the oldest speciality concrete cutting and coring and construction supply companies serving the metro Detroit area for over 55 years. DDD was founded by Roy Sweet in 1961. DDD's current owners, Jim Grunewald and Kirt Hardoin, joined the company in 1969 and 1973. It has grown into a successful small business  with key employees combined having over 100 years of experience in the industry.  We have been fortunate to be a part of the Detroit renaissance, but like other companies we have also experienced the downturns of the Detroit ecomony.  It has made us stronger - becoming more aware of our customers needs, using our experience to  solve their complex problems and expanding our product offerings and support services to meet changing requirements.


As a veteran owned small business, DDD is able to provide quality services with timely response and attention to safety. Our long term relationships with suppliers and manufacturers - DDD has been a Stihl dealer since 1969, enables us to provide our customers with a range of professional, quality products. We understand understand the  need for quality, cost control and value.

Serving Detroit For Over 55 Years

Veteran Owned

Detroit Headquartered Business

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