iadc 217 roller bit drilling オンライン製造

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Factory Supply Directly 15 1/2inch IADC217 Steel Teeth Tricone Bit JSBIT tricone bits factory offers all kinds of tricone drill bits. Tricone bits are ... 続きを読む

Factory Supply Directly 15 1/2inch IADC217 Steel Teeth Tricone Bit 1)Rubber sealed Bearing Structure High precision journal bearing with two thrust ... 続きを読む

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15 1/2inch 393.7mm IADC217 Steel Teeth Tricone Bit For Water Well Drilling IADC Recommended parameters Applicable strata WOB KN/mm Rotating speed r... 続きを読む