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바위에 대 한 비트 81/2"HM952XAG 고품질 Pdc 드릴 Bits.drill Daimond 드릴링
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13 3/4" lámina 5 HM652XAG del solo fila matriz cuerpo petróleo diamante brocas Pdc
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81/2" HM952XAG alta qualidade broca Pdc Bits.drill Bits para Rock Daimond perfuração
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BitsPDC сверло PDC многоступенчатый башня
121/4"HM652XA 매트릭스 몸 PDC 비트 / 다이아몬드 드릴 비트 PDC / PDC 코어 비트와 노즐/석유 우물 드릴링
91/2"HM952XA Best Sale Wholesale Sandstone Pdc Drilling Bit For Oil And Gas Drilling
81/2"HM352XA High Quality Center Bit Manufacturer Standards PDC Drill Bit For Directional Drilling
PDC Arc carottage avec mèches
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