Iithegi zeMveliso
Iirivethi ze-aluminium zokudonsa ziyafumaneka ngobukhulu obahlukeneyo, iintlobo kunye nezixhobo kwiintlobo ngeentlobo zezicelo ezininzi. Irivethi elula yamanyathelo amathathu yenza uninzi lwezibophelelo zisebenze ngokukhawuleza. Ezi rivethi zivulekileyo zifana neerivethi zetyhubhu zendabuko xa zisetwa, kodwa i-mandrel ishiywa ngaphakathi kwirivethi ukuze ibe namandla angakumbi.
