Ubuchwephesha obuqhubekayo be-extrusion yinguqu kumgca we-non-ferrous metal processing, isetyenziselwa uluhlu olubanzi lobhedu, i-aluminium okanye i-alloy rod extrusion yobhedu ukwenza ubukhulu becala iintlobo zeflethi, ezijikelezileyo, zebhasi, kunye nabaqhubi beprofayili, njl.