Drill Collar Is At The Bottom Of The Drill String And Is The Major Component Of The Bha. Drill Colla
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FOB Price:
Negotiable
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Delivery Time:
3 days
Expiry Date:
long-term
effectiveness
Last Update:
2017-08-04
Views:
27
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Product Details
Drill Collar Is At The Bottom Of The Drill String And Is The Major Component Of The Bha. Drill Collar Is An important Part Of Petroleum Drilling,Cylinder Forging