Manje okokufakwa embonini kusetshenziswa kakhulu indlela yokubumba, i-DHDZ ihlinzeka ngezinga eliphezulu, ngakho-ke manje uma kwenziwa, yiziphi izinto zokusetshenziswa ezisetshenziswayo? Izinto zokwakha ikakhulukazi i-carbon steel ne-alloy steel, ilandelwa i-aluminium, i-magnesium, ithusi, i-titanium nama-alloys ayo. Isimo sokuqala ...
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