• 1961 –Founding of Ceylon Steel Corporation
  • 1967 March –Commissioning of the Rolling Mill and Wire Mill
  • 1975 October –Commissioning of the Steel Foundry
  • 1982 July –Commissioning the 25 T Electric ARC Furnace and Steel Billet Casting Plant
  • 1993 January –Conversion of Ceylon Steel Corporation  to Ceylon Steel Corporation Limited
  • 1996 December –Transfer of Ceylon Steel Corporation Limited to HANJUNG       ( Korea)
  • 1997 April –Inauguration of Ceylon Heavy Industries and Construction Companies Limited (CHICO)
  • 2009 September –Acquisition of Ceylon Heavy Industries and Construction Companies Limited (CHICO)
  • 2010 April –Inauguration of Ceylon Steel Corporation Limited
  • 2012 May –Commissioning of the GI Pipe Plant
  • 2012 November –Commissioning of the Galvanize plant