steel tooth tricone bit 490mm ऑनलाइन निर्माण

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490mm IADC217 Mill Tooth Tricone Bit For Water Well Drilling IADC Recommended parameters Applicable strata WOB KN/mm Rotating speed r/min 116,117 0.35-0.8 150-80 Extremely soft formations with high compressive ... और अधिक पढ़ें

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