tricone roller drill bit 9 5 inch 온라인 제조

High Quality 12 1/4inch IADC537 Tricone Rock Drilling Bits IADC Recommended parameters Applicable strata WOB KN/mm Rotating speed r/min 116,117 0.35-0... 자세히보기

metal sealed bearing 6 inch 152mm tricone single roller core drill bit Product Description Size 140mm 8 1/2 inch roller core bits part Machine Type ... 자세히보기

8.5inch single cone rock roller drill bit for rotary drilling Product Description Size 140mm 8 1/2 inch roller core bits part Machine Type piling tool... 자세히보기

China Power Factory Single Roller Cone Roller Cone Bit Product Description Size 140mm 8 1/2 inch roller core bits part Machine Type piling tool/ hole ... 자세히보기

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Drill Bit Tricone Palm, Single Cone Drill Bit, Oil Well Drilling Rock Bit 8.5inch Product Description Size 140mm 8 1/2 inch roller core bits part ... 자세히보기