Hindusthan Udyog Limited, established in 1947, is a manufacturing company initially focused on steel fabrication and material handling equipment. Over the years, the company expanded into producing alloy and stainless steel castings for heavy engineering industries such as turbines, mining, and power plants. It operates two manufacturing units in Kolkata and Nagpur, though the Nagpur unit was sold in 2023. The company underwent significant changes, including mergers with ACC-Nihon Castings in 2008-09 and several other companies in 2022, which expanded its equity base and market reach. Hindusthan Udyog is listed on both BSE Limited and Calcutta Stock Exchange, indicating its established presence in the Indian equity market. With a focus on high-quality castings, the company serves diverse sectors, including cement plants and power generation, maintaining a strong industrial footprint.