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M137 PDC Drill Bit nke dị sentimita 8 na ọkara maka igwu nkume siri ike nke ukwuu
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Agụba 7 PDC mbepụ ihe eji egwu mmiri M137 8.5 sentimita asatọ maka olulu mmanụ
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Ụlọ ọrụ API nke PDC bit maka olulu mmiri dị na ngwaahịa
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Ụlọ ọrụ API PDC Bi Center Bit maka igwu ala n'okpuru Reamer
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Ibe mkpọpu nkume API PDC n'ogbe maka nhazi siri ike