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