yogulitsa pobowola zidutswa IADC217 17.5 mainchesi (444.5mm)

Bowola ndi chipangizo chomwe chimamangiriridwa kumapeto kwa chingwe chobowola chomwe chimaduka, kudula kapena kuphwanya miyala pobowola chitsime, monga chobowolera kuti atulutse madzi, gasi, kapena mafuta.
Bowolo limakhala lobowola ndipo lili ndi majeti olola kutulutsa madzi obowola, kapena matope, pa liwiro lapamwamba ndi kuthamanga kwamphamvu kuti athandize kuyeretsa pobowola, ndipo kuti apangike mofewa, amathandiza kuswa mwala.
Ma tricone drill bits: Chidutswa cha tricone chimakhala ndi zodzigudubuza zitatu zokhala ndi mano opangidwa ndi zinthu zolimba, monga tungsten carbide. Mano amathyola mwala mwa kuphwanya pamene zogudubuza zimayenda mozungulira pansi pa dzenjelo.
PDC kubowola: Kachidutswa kakang'ono ka PDC kalibe magawo osuntha ndipo imagwira ntchito pokwapula pamwamba pa thanthwe ndi mano ooneka ngati disk opangidwa ndi slug ya diamondi yopangidwa ndi tungsten carbide cylinder.