Kolkata: Steel Authority of India Ltd (SAIL) on Saturday said its proposed Rs 20,000 crore investment plan for capacity expansion in West Bengal would be completed by June 2012.

The expansion will involve various steel companies in the state, SAIL Chairman C S Verma said here on Saturday after meeting Chief Minister Mamata Banerjee.

SAIL is setting up a 2.5 million tonne plant at Burnpur at a cost of Rs 16,000 crore and it would be completed in June 2012, he said.

A sum of Rs 4,000 crore would be invested in Durgapur Steel Plant (DSP) and Alloy Steels Plant. DSP's capacity would be augmented to 2.5 million tonne from 2 million.

SAIL is also implementing a 0.5 million tonne clean steel project in association with Kobe Steel of Japan at Alloy Steels Plant at a cost of Rs 1,500 crore.