I-Encro-Galvanity ye-hexagonal drill
Yenziwe ngentsimbi ye-Parbon ye-Parbon, ubunzima bomphezulu ufikelele kwi-HV560-750 emva konyango lobushushu, kwaye ubunzima obukhulu bufikelela kwi-HV240-40-40-40-40-40-40-40-40-40-40-40-40-40-40-40-40-40-40-40-40-40-40-40-40-40-40-40-40-40-40-40-40-40-40-40-40-40-40-40-40-40-40-40-40-40-40-40-40-40-40-40-40-40-40-40-40-40). Umphezulu we-electro-jikelele ukwenza ukuba i-5-12μm μm, ehlangabezana ne-GB / T 13912-2002 imigangatho, kwaye uvavanyo lokutshiza lwetyuwa lufikelela kwi-24 ukuya kwengama-88 ngaphandle kwe-rust emhlophe.