CHENNAI (India) - In the next two years, India is likely to overtake Japan to rank as the third largest casting producer in the world. However, it requires additional investment of $1.5-2 billion, V. Mahadevan, president of the Institute of Indian Foundrymen, said on Wednesday. He was addressing reporters on the eve of the three-in-one mega event of 68th World Foundry Congress, 56th Indian Foundry Congress…