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| 标准壁厚管 | |||
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standard pipe : 55 phrases in 14 subjects |
| Architecture | 1 |
| Automobiles | 2 |
| Aviation | 11 |
| Drilling | 3 |
| Earth sciences | 2 |
| Economy | 1 |
| General | 6 |
| Mechanic engineering | 2 |
| Mechanics | 3 |
| Metallurgy | 4 |
| Oil / petroleum | 2 |
| Shipbuilding | 1 |
| Technology | 16 |
| Water resources | 1 |
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