| 1.   | Barzel      Holdings Inc. f/k/a Novamerican Steel Holdings Inc. (U.S. –      DE)                                               |
|-----------|--------------------------------------------------------------------------------------------------------------------------------------|
|      |                                                                                                                                 |
| 2.   | Barzel      Finco Inc. f/k/a Novamerican Steel Finco Inc. (U.S. –  DE)                                                         |
|      |                                                                                                                                 |
| 3.   | Barzel      Industries U.S. Inc. f/k/a Novamerican Steel U.S. Inc. f/k/a Integrated      SteelIndustries      Inc. (U.S. – DE) |
|      |                                                                                                                                 |
| 4.   | American      Steel and Aluminum Corporation (U.S. – MA)                                                                       |
|      |                                                                                                                                 |
| 5.   | Nova      Tube and Steel, Inc. (U.S. – DE)                                                                                     |
|      |                                                                                                                                 |
| 6.   | Novamerican      Tube Holdings Inc. (U.S. – DE)                                                                                |
|      |                                                                                                                                 |
| 7.   | Nova      Tube Indiana, LLC (U.S. – DE)                                                                                        |
|      |                                                                                                                                 |
| 8.   | Barzel      Industries Canada Inc. f/k/a Novamerican Steel Canada Inc. f/k/a      NovamericanSteel      Inc. (Canada)                |
|      |                                                                                                                                 |
| 9.   | 632422      N.B. Ltd. (New Brunswick)                                                                                                |
|      |                                                                                                                                 |
| 10.  | Hencorp      LLC (U.S. – DE)                                                                                                   |
|      |                                                                                                                                 |
| 11.  | Tubes      Delta Inc./Delta Tube Inc. (Quebec)                                                                                       |
|      |                                                                                                                                 |
| 12.  | Tubes      Delta, Societé en Commandité/Delta Tube and Company Limited (Quebec      LP)                                    |