3000mm nq hq drill bits

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BQ NQ HQ 45MnMoB Drill Steel Pipe Product information Applicatioan: for wire-line drill rods,core barel tubes,drill rods coupling casing Size range: O...

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NQ HQ drill rod cutter cutting rods at any point in a drill hole Features: - Available in all standard BQ NQ HQ PQ drilling size. - Cut rods at any po...

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Core drill pipe BQ NQ HQ PQ Wireline drill pipe Water and oil well drilling Description A casing is a large diameter pipe used as a structural retaine...