CB&I, a Woodlands, Texas-based energy infrastructure giant, announced Wednesday it will provide pipe fabrication for the Dow Chemical Co. U.S. Gulf Coast Investment Program, which includes four new polyethylene plants in Louisiana and Texas and a new propylene and ethylene production unit in Texas.

The value of the contracts was not disclosed. Propylene and ethylene are used in making chemicals.

“CB&I’s strategically-located fabrication facilities, production management systems and manufacturing technology give us the unique capability to provide complete piping solutions for major energy infrastructure projects,” said Luke Scorsone, President of CB&I’s Fabrication Services operating group.

In 2013, CB&I acquired Baton Rouge-based Shaw Group for $3 billion. The combined company has around 50,000 employees worldwide, with more than 1,000 of those in Baton Rouge.