• Durgapur Steel Plant: The Durgapur Steel Plant (DSP) is located in Durgapur, West Bengal. It was established in 1956 as a public sector enterprise under the Ministry of Steel, Government of India. The plant has an installed capacity of 4.5 million tonnes per annum (MTPA) of crude steel and produces a wide range of steel products, including rails, beams, plates, and billets.

• Bhilai Steel Plant: The Bhilai Steel Plant (BSP) is located in Bhilai, Chhattisgarh. It was established in 1955 as a public sector enterprise under the Ministry of Steel, Government of India. The plant has an installed capacity of 5.1 MTPA of crude steel and produces a wide range of steel products, including rails, beams, plates, and billets.

• Rourkela Steel Plant: The Rourkela Steel Plant (RSP) is located in Rourkela, Odisha. It was established in 1954 as a public sector enterprise under the Ministry of Steel, Government of India. The plant has an installed capacity of 3.4 MTPA of crude steel and produces a wide range of steel products, including rails, beams, plates, and billets.

The Durgapur, Bhilai, and Rourkela steel plants were all set up during the Second Five-Year Plan (1956-1961) as part of the government's efforts to develop the country's steel industry. The Second Five-Year Plan was a time of rapid industrialization in India, and the establishment of these three steel plants was seen as essential to meeting the country's growing demand for steel.

The steel plants were built with technical assistance from the Soviet Union. The Durgapur Steel Plant was built with the help of the Metallurgical Plant Export Association (MEPEA) of the Soviet Union, the Bhilai Steel Plant was built with the help of the Heavy Machinery Plant Export Association (HMEPA) of the Soviet Union, and the Rourkela Steel Plant was built with the help of the Urals Machinery Export Association (UMEA) of the Soviet Union.

The establishment of these three steel plants played a major role in the development of India's steel industry. They helped to increase the country's steel production capacity and meet the growing demand for steel. The steel plants also provided employment to thousands of people and helped to boost the economy of the regions in which they were located.

In addition to the Durgapur, Bhilai, and Rourkela steel plants, several other steel plants were also set up during the Second Five-Year Plan, including the Salem Steel Plant in Tamil Nadu, the Visvesvaraya Iron and Steel Plant in Karnataka, and the Alloy Steels Plant in West Bengal. These steel plants helped to lay the foundation for the development of India's steel industry and played a major role in the country's economic growth.