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6 1/2"oil spiral drill collar
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Title：
6 1/2"oil spiral drill collar
Unit price：
Negotiable
MOQ：
Negotiable
Quantity：
Negotiable
Delivery date：
Since the payment date Days delivery
Contact：
John zhang （Ms.）
Mobile：
Telephone：
Details
It reduces the contract area with the wellface and the steering resistance,which can prevent differential pressure sticking. 6 1/2"oil spiral drill collar
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