Ụlọ
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Nkọwapụta Ụlọ ọrụ
Asambodo
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Ihe ngosi ụlọ ọrụ
Ngwaahịa
TCI tricone bit
Steel/egweri eze tricone bit
Otu rola cone bit
HDD rock reamer / oghere oghere
Ọnụ ego nke PDC
Ngwakọta Bit
Nzọụkwụ dọkpụrụ ibe n'ibe
Akụkọ
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Ajụjụ
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Ngwa
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