Izindaba Zomkhiqizo
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Idivayisi yokushayela ephezulu ngaphakathi kwe-IBOP
I-IBOP, i-internal blowout preventer ye-top drive, ibizwa nangokuthi i-top drive cock.Emsebenzini wokumba uwoyela negesi, ukuqhuma kuyingozi abantu abangafuni ukuyibona kunoma iyiphi indawo yokumba.Ngoba kubeka engcupheni ukuphepha komuntu siqu kanye nempahla yezisebenzi zokumba futhi kuletha ...Funda kabanzi
