Roller Bits Core Barrel Size520mm-2000mmApplication- For strong rock formations(compressive strength ≥100Mpa).Features- Kelly Box size130;150;200mm- Roller Bits are API Certificated, complete of bearing and carbide insertSuitable for RotaryDrilling RigBauer;Sany; Xcmg; Soilmec; Mait; IMT...
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