** Ithebula Yokuqukethwe *** 1. Isingeniso 2. Ukuqonda i-Cast Iron 3. Izinzuzo ze-Cast Iron ekukhiqizeni 3.1 Amandla kanye Nokungapheli 3.2 Ukushisa nokugqoka Ukuphikisana okubi 3.3 Izindleko 4. Ukuhlola Insimbi Yensimbi 5. Izinzuzo ze-Ductile Iron ekukhiqizeni 5.1 Okuguquguqukayo kanye ne-Veratility 5.2 Enforced Mechanical Properties 5.3 Cor. Ukuphikiswa kwe-6.C