Without any alloying elements, Ductile iron pipes do not corrode and are impervious to oxidizing corrosion down to a PH of 2-3, but they do rely on other bone austempered cast iron elements to give them credence. This is why DUCTILE IRON PIPES are kept tight for stress applications. According to industry experts, Australia has of late begun to incorporate ductile iron pipe in their infrastructure considerations, suggesting that ductile iron has functionality on par with blank pipes.