| TUBU LIMITED | Private company limited by shares | Live |
| PT TUBULAR COMPANY LIMITED | Private company limited by shares | Live |
| ELECTRICAL TUBULAR ELEMENTS LIMITED | Private company limited by shares | Dissolved |
| MID-CONTINENT TUBULAR LIMITED | Private company limited by shares | Dissolved |
| PREMIUM TUBULAR SUPPLY (ASIA) LIMITED | Private company limited by shares | Dissolved |
| PREMIUM TUBULAR SUPPLY LIMITED | Private company limited by shares | Dissolved |
| TUBULARS AND SUPPLY (ASIA) LIMITED | Private company limited by shares | Dissolved |
| Premium Tubulars Limited | Private company limited by shares | Dissolved |
| TUBULLAR SOFTWARE LIMITED | Private company limited by shares | Dissolved |