Drill Collar
Drill Collar products from over 45 Drill Collar manufacturers, exporters, suppliers and Drill Collar wholesalers products directory.
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Spiral Drill Collars
Drill collar is mainly used to provide bit weight to drill bit so that drill piipe is in tension. Especially drill collar can keep drill bit centralized and hole tradck by large rigidity. Spiral drill 
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Drill Collar
The collars are made of AISI 4145H forging or finish rolling alloy structural steel.The drill collar are trepanned and drifted t
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Spiral Drill Collar
The spiral drill collars are made of 4145H modified chromium-molybdenum alloy steel acc. to API Spec.7 and SY/t5144. All threads are phosphated, coppperized or cold worked. All threads are machined
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Non-Magnetci Drill Collar
The non-magnetic drill collar are made of 4145H modified chromium-molybdenum alloy steel according to API Spec 7 and aSY/T 5144
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Drill Pipe, Drill Collar, Tubing Case
Our business involving metallurgy industry, oil exploring drilling tools and some other relating fields.We take the opportunity to Introduce ourselves as one of the leading manufacturer and
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Drill Collars
Standard: API Spec 7Material: AISI 4145H Alloy steel or Non-magnetic materialSpecification: OD: 3-1/8”—11”Length: 10’-31’
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drill collar
The wall thickness of heavy weight drill pipe is between drill pipe and drill collar, its structure is simliar with drill pipe. It is made from premium alloyed steel. Its both tool joints and middle
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Drill Collars
Spiral Drill collars are the most important parts of all drilling string elements,the performance of spiral drill collars with e
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Spiral Drill Collar
Drill Collars are the most important parts of all drilling string elements. The performance of drill collars will effect the efficiency of drilling.Zyzxdy mission is to provide our clients with most
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Drill Collar
◆ Applicable to API standard.◆Out dia：2 3/8”，3 1/2” ，2 7/8”，4 1/2” ，5”，5 1/2”.
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Drill Collar
Standard: API Spec7
Material: AISI 4145H Alloy Steel and Non-magnetic material
Specification: OD: 3-1/8"-11"
Length: 10"-31"
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Drill Collar,sxweigaowsj(at)live.cn
* Specification: Ф89 Ф105 Ф121 Ф146 Ф159 Ф165 Ф178 Ф203* It's made from rolled or forged AISI4145H chrome-molybdenum steel. The content of chemical composition and microelement is controlled
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spiral drill collar
Drill collar is mainly used to provide bit weight to drill bit so that drill piipe is in tension. Especially drill collar can keep drill bit centralized and hole tradck by large rigidity. Spiral drill
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petrol boring tool
Our company can provide petrol boring tools (drill pipe, drill collar, stabilizer and so on).
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drill collar API
drill collar:
Ф89 Ф105 Ф121 Ф146 Ф159 Ф165 Ф178 Ф203
It's made from rolled or forged AISI4145H chrome-molybdenum steel. The content of chemical composition and microelement is controlled
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API 5D Drill Pipe
API 5D drill pipeFeatures:
1) Sizes: OD 2 3/8", 2 7/8", 3 1/2", 4", 4 1/2", 5", 5 1/2"
2) Standard: API SPEC 5D, API SPEC 7
3) Type of end finish: EU-external upset, IEU-internal & external
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Drill collar
---Drill collarUsage :
One of the most important components of the drill string is to provide drilling bit of pressure and the drill string rigid role .Standard :
API 7, API 7-1 and SY/T standards....
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drill collar
Drill Collars are the most important parts of all drilling string elements. The performance of drill collars will effect the efficiency of drilling. Shenlong's mission is to provide our clients with
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drill collar
DescriptionSpecificationUnit PriceWeight (kg)Slick drill collar (30ft)3 1/2'' ф893754 1/8'' ф105
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drill collar
Product features: It is used in drill string which are one of the most important component to provide drilling bit of pressure and the drill string rigid role. All connections are phosphate-coated or