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| сварной шов трубы (Alexander Demidov) | |||
| pipe weld: 47 phrases in 15 subjects |
| Caspian | 1 |
| Construction | 5 |
| Drilling | 7 |
| Energy industry | 1 |
| General | 3 |
| Metallurgy | 1 |
| Oil / petroleum | 3 |
| Oil and gas technology | 2 |
| Oilfields | 2 |
| Pipelines | 3 |
| Road works | 1 |
| Roll stock | 4 |
| Sakhalin S | 1 |
| Technology | 6 |
| Welding | 7 |