9 1/2" HM642XA hoge kwaliteit API PDC boor Bit voor olieveld van Chinese fabrikant
Chinese fabrikant/olie veld/hoge kwaliteit/pdc boor bits/pdc bits
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コア ドリル、hainaisen ドリル ビット、pdc コア ドリル ビット、水もドリル ビット |
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PDC DRILL BIT, AÇO CORPO DRILL BIT, 6 BROCA DE LÂMINA, MÉDIO MACIO BROCA, ÓLEO BEM BROCA, |
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