Drill rod subdrill pipe sub/drill rod subs/drilling tool Tool joints for drill pipe for oil or natural gas well is a welding STDTensile StrengthMpaYield StrengthM
Lifting sub1APIspec7-1 2forliftingofthedrilltools 3dividedintoaorbtypestructure 418or90degreeshoulder Drilltoolliftingsubisaspecialtoolsforliftingofthedrilltool
milling shoeHigh efficiency pear type mill shoe is used to mill some casing out of shape. It is used to repair and maintain burr of casing and to clean up the cr
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