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Ingegneria meccanica: Industria petrolifera
| English |
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| Noun phrase |
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| Countable |
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| tongs |
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| A wrench-like device that is suspended above the drill floor by a cable. It is used to grip the drill pipe as it is being screwed together and unscrewed by the spinning wrench. |
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| Sh91 |
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| The pulling force exerted by the cathead provides torque on the tubular by means of the lever arm corresponding to the length of the rotary tong. |
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| Sh91 |
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| Petroleum Engineering |
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| auxiliary equipment |
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| chiavi di manovra |
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