83/4" HM952XA 222.2 inčni čelično tijelo naftu Pdc postupak je ujeo Pdc bitni
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oil well drill bit,pdc drill bit,gas well drill bit,oil field,natural gas drilling bit,manufacturer drill bit,china,factory | |
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드릴 지질 막대 | ì ë ìƒ ќ ì° ê3µìž¥, HAINAISENëŠ ìµœê3 ì ќ ì¤êµ ì§ì ï ë ˆœë¦ ë¡œëœ œì ì¡° ìì...ì2¤ í'ìž...ë ëˆë¤. ìš°ë¦ ëë ï¤ ì ïì ï ë ˆœë¦ ë§ëŒì... |
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vodu dobro bušenje bitni, tricone malo, vruće prodaja bit / Volfram karbid ubaci zalogaj/Valjak stožac svrdlo, porculan, tvornica | |
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thực hiện tại Trung Quốc, chất lượng tốt, kim cương pdc khoan chút, than khai thác mỏ và đập xây dựng, wholsale khoan chút | |
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중국 최고의 드릴 비트에서 |
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