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Products > threading machines > Beijing Metalwork Petroleum Technology Co.,Ltd | Similar Products
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threading machines

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Non-magnetic Drill Collar

Non-magnetic Drill Collar
Detailed Product Description drill collar 1)O.D: 2-3/8"-20" 2.Grade:J55 K55 N80 P110 ect 3.Thread :NU EU STC LTC BTC 4.Standard: API 5CT... drill collar Materials of the Non-magnetic drill collars ...

Spiral Drill Collars

Spiral Drill Collars
The spiral drill collars are made of 4145H modified chromium-molybdenum alloy steel according to API Spec 7 and aSY/T 5144 . All threads can be phosphated,copperised or cold worked. All threads are ...
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