Siphakela uhla olubanzi lwezinsimbi zensimbi zezingxenye zokugaya zensimbi ezihlinzeka ngamandla amakhulu afanayo kuzo zonke izinkomba. Siphonsa i-ductile iron, i-ADI, i-CADI, i-Ni-Resist, i-Ni-Hard, ne-compact graphite, nayo i-grey iron nezinye izinsimbi eziningi.