81/2" HM952XG matice tělo jednoho řádku nové ropné vrty Rock Bit
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83/4" HM952XA 222.2 es acél test olajkút Pdc fúrófej Pdc darab |
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121/4 Inch TCI Drill Bit/Insert Tricone Rotary Bit,water Well Drilling Equipment |
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83/4" HM662XAG Kivisöe kaevandamine ja tammi ehituse Pdc Drill Bit Oil Well puurimiseks |
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