I-Dome PDC ne-Conical PDC Mining / Engineering Izicelo

Njengoba kukhonjisiwe esithombeni esingezansi esifanele, i-dome PDC kanye nokufakwa kwe-carbide kufakwe ku-percussion kancane efanayo. Ngemuva kokuhlolwa, ukufakwa kwe-carbide kukhathele.