121/2" HM662XAG mỏ dầu khoan chút cho cứng hình thành đá sa thạch khoan
PDC bit manuacturer pdc khoan bit kim cương pdc khoan bit pdc khoan chút chèn
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121/4 tommer TCI bore Bit/Insert Tricone Rotary Bit,Website:, vand godt boreudstyr / tricone rock bore / godt boring bits |
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Gyda ffatri proffesiynol a chynhyrchiol, HAINAISEN yn un o'r gweithgynhyrchwyr ychydig craidd diemwnt dwbl tiwb Tsieina blaenllaw. Croeso i cyfanwe... |
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