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产品型录 |
共1 笔 产品 |
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DQ-70/4500DB top drive system is an AC VFD electric top drive. Its maximum hoisting load is 4500KN and working height of the main body is 5.54m. It can be used in the land rigs or the offshore rigs with drilling depth of 5000m or 7000m.
DQ-70/4500DB ...
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