Whanganui's Waters and Farr pipe manufacturing plant has been named the top plant in the Hynds group.
The Hinau St operation is the national base for Waters and Farr which also has plants in Auckland and Rangiora.
"The business wasn't in a great place but in the last year it has really turned around and that was recognised by us winning the Hynds Manufacturing Plant of the Year award," supply chain manager Rebecca Dixon said.
Factory manager Pieter Venter said the company had been on a "hectic journey" in the past 12 months.
"The company wasn't in a positive position so we needed to create a vision for the company and get our people engaged in that," Mr Venter said.