| Ünvan Adı | Sermaye | Pay (%) |
|---|---|---|
| Borçelik Çelik Sanayii Ticaret A.Ş. | 28.621.026 | 11,78 |
| Borusan Pipe US Inc | 135.000.000 | 100,00 |
| Borusan Pipe Holding BV | 18.000 | 100,00 |
| Borusan Pipe Cooperatie U.A | 3.430.916 | 99,00 |
| Borusan Tube Products S.A. | 1.349.865 | 100,00 |
| Borusan Tube International GmBH | 500.000 | 100,00 |
| Borusan Vobarno Tubi Spa | 12.766.774 | 100,00 |
| Borusan Berg Pipe Holding Corp. | 193.946.757 | 100,00 |
| Berg Pipe Mobile Corp. | 8.854.390 | 100,00 |
| Berg Pipe Panama City Corp. | 92.904.514 | 100,00 |
| Borusan Berg Pipe Logistics Corp. | 10 | 100,00 |