 |
| pipe riser: 38 phrases in 15 subjects |
| Cement | 1 |
| Construction | 5 |
| Drilling | 4 |
| Electronics | 1 |
| Energy industry | 1 |
| General | 1 |
| Hydraulic engineering | 1 |
| Karachaganak | 1 |
| Makarov | 3 |
| Nautical | 1 |
| Oil / petroleum | 14 |
| Oil and gas | 2 |
| Oil and gas technology | 1 |
| Refrigeration | 1 |
| Technology | 1 |