Borusan Mannesmann, Turkey's leading steel pipe manufacturer, said it would invest $150 million in building a plant in the United States to tap the shale gas boom. "This will be an investment to benefit from the advantages of shale gas production. It is an investment totally targeting the American energy sector, which uses smaller pipes or pipes mainly for drilling," said Agah Ugur, chief executive of parent company Borusan Holding.

Copyright Reuters, 2012