The Missouri plant, based in Monett, was built in the early sixties and has two extrusion presses in addition to painting capabilities. There is also an aluminium casthouse with 60 employees, which will remain part of Hydro's service portfolio. Fabrication and extrusion activity will cease in October.

Matthew Dionne, president of Hydro's North American extrusion business, said the company had considered divestment before deciding upon closure of its extrusion and fabrication activities.

"Demand in the US market has picked up this year," Dionne said, adding that overcapacity is still presenting challenges. "It is unlikely that the Monett plant could perform in a sustainable manner moving forward," he said.

Three years ago, Hydro consolidated its extrusion activities in nearby Cassville to the Monett site, which currently employs 140 people.

The plant in Phoenix has been expanded its manufacturing area by 60,000 sq ft. The plant is dedicated to fabrication, including CNC machining and product assembly.