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Bobi Petroleum Drilling Tool (China) Co., Ltd

Bobi Petroleum Drilling Tool (China) Co., Ltd


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Drilling Equipment: Casing, Tubing & Drill Pipes

Drilling Equipment: Casing, Tubing & Drill Pipes (0-Items)

Casing, Tubing & Drill Pipes
Drill collar is mainly used to provide bit weight to drill bit so that drill pipe is in tension. Especially drill collar can keep drill bit centralize...
Casing, Tubing & Drill Pipes
The wall thickness of heavy weight drill pipe is between drill pipe and drill collar, its structure is similar with drill pipe. It is made from premiu...
Casing, Tubing & Drill Pipes
Kellys  
Kellys is the driving section of the whole drill stem. Kelly is available with square kelly and hexagonal kelly. Kelly are manufactured strictly from ...
Casing, Tubing & Drill Pipes
NON-Magnetic Drill Collars are made from stainless alloy steel by combining a proprietary chemical analysis and a hammer forging process. The material...
Casing, Tubing & Drill Pipes
Spiral drill collar is used to reduce contact area with hole so as to avoid efficiently bit sticking from differential pressure. Spiral drill collars...

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