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13 3/4" HM652XAG 5 lama singola fila matrice corpo petrolio Pdc punte di diamante

petroliferi trapano bit olio rig trapano punta roccia bit alta qualità diamante foratura punte di perforazione direzionale


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121/4 palce TCI Drill Bit/Insert Tricone Rotary Bit, vrtání zařízení / tricone skále vrtat / dobře vrtné bitů
PDC bitni, PDC burgiju, matrice telo, starog druga formacija, nafte i gasa, bušenje, diamond bušenje, pdc bitova
पेशेवर और उत्पादक कारखाने के साथ,Website:, HAINAISEN अग्रणी चीन सीढ़ी प्रकार खींचें सा निर्माताओं में से एक है। में आपका स्वागत है थोक सीढ़ी प्रकार...
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