Ngoku ukufakwa kushishino ikakhulu kusetyenziswa indlela yokubumba, i-DHDZ ibonelela ngomgangatho ophezulu wokubunjwa, ngoku xa kusenziwa, zeziphi izinto ezisetyenziswayo? Izinto zokubumba ziyi-carbon steel kunye ne-alloy steel, ilandelwa yi-aluminium, i-magnesium, ithusi, i-titanium kunye ne-alloys yazo. Imeko yokuqala ...
Funda ngokugqithisileyo