It acquired Singapore's NatSteel in 2004 and Thailand's Millennium Steel last year, which together added about 4mtpa.

ECONOMIST: Why the Tata-Corus deal makes sense for both parties

Seeking to grow its energy base, Thailand has recently ordered the steel to build a third major gas pipeline, which in time would trigger development of 2 trillion cubic feet of undeveloped Unocal reserves.

FORBES: It's All About Azerbaijan

Much of the steel produced is shipped to Thailand, via Teesport, and is used mainly in the automotive sector, with some turned into white goods.

BBC: Redcar's SSI Steel plant hits two million tonnes mark