United Steel Acquires Black Rock Fireproof Column

Bridgeport Columns were used for PS 49 in Queens, N.Y.

East Hartford, CT – United Steel, Inc. (USI) acquired the Black Rock Fireproof Column company in late 2016 and has relocated the Bridgeport-based manufacturer to USI’s East Hartford facility. Black Rock will retain its name and operate as its own division under the management of David Aldo, former owner of the company.

Although Black Rock will have its own dedicated website (, it has taken on a new logo and branding consistent with United Steel’s. Additionally, United Steel has transitioned the company’s safety procedures along with its sales and service processes to be in line with its existing standards. Black Rock will continue its presence at national trade shows, including the American Institute of Architects in Orlando April 27 to 29.


“Black Rock columns have a long history and strong reputation as a great looking, solid, reliable product,” said Ken Corneau, president of United Steel. “We are glad to be able to continue serving the architects and engineers who use these columns on projects throughout the country. We also are glad to welcome Black Rock’s tradesmen to our company and are excited to add their expertise to our core business. This is a great step for United Steel and positions us for wonderful future opportunities.”

Commonly known as Bridgeport columns, the AISC-certified Black Rock columns are in use every day at construction projects throughout the country. Owners and architects often prefer these columns because of their iron-clad durability, high quality, and lower long-term costs. Aesthetically designed and expertly fabricated in a AISC-certified facility, Bridgeport columns are delivered to the job site ready for erection needing only final painting, further saving owners time and money.

Black Rock Fireproof Column’s outer shells provide a clean, smooth round, square and rectangular shapes (along with customized shapes and sizes) which are ideal for window wall construction in hospitals, schools, dormitories, cafeterias, shopping centers, and other areas where exposed columns are used.