 |
| pipe casing: 44 phrases in 15 subjects |
| Bridge construction | 2 |
| Construction | 9 |
| Drilling | 1 |
| Karachaganak | 2 |
| Makarov | 1 |
| Molikpaq | 1 |
| Oil / petroleum | 10 |
| Oil and gas | 3 |
| Oil and gas technology | 2 |
| Oilfields | 1 |
| Pipelines | 1 |
| Rail transport | 3 |
| Sakhalin | 1 |
| Technology | 6 |
| Water supply | 1 |