Pittsburgh-based Wabtec Corporation has announced an agreement with National Company Kazakhstan Temir Zholy, the national railway of Kazakhstan.

The $4.2 billion agreement is to deliver Wabtec's Evolution Series locomotives and provide long-term service support.

It is the largest locomotive agreement in the company's history. 

“For over two decades, our partnership with KTZ has been critical in transforming Kazakhstan’s rail industry,” Rafael Santana, President and CEO of Wabtec, said.“This historic agreement embodies KTZ’s visionary approach for the country’s rail network as the primary link between Europe and Asia. By delivering advanced locomotives and long-term service solutions, Wabtec is a proud partner in Kazakhstan’s progress, helping to unlock the region’s enormous potential and developing the engineering competencies in the country’s railway industry.”

The locomotives will improve fuel efficiency and run better, Wabtec said.