to corrosion.
              Centrifugally cast iron (CI)
              RCC (Reinforced concrete council)
             Centrifugally cast iron vs. Galvanized iron: CI is more resistant to corrosion in soil and water environment as compared to GI. But CI cannot be threaded much frequently, as it will corrode very fast near the threads and thus will lead to breakage and leakage. So CI is used only, where long pipes are needed. For small length pipes, like those in houses, GI is the better option. Thus CI is majority used for pipelines for water supply, and GI is also used where small length pipes are need
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