Latest News People On The Move...Triangle Tube/Phase III October 1, 2006 Manna Triangle Tube/Phase III announced two new hires: Greg Manna for its technical service department and Mike Senk for the engineering department. Senk Also, Jim Nicholas was promoted to director of engineering. The company manufactures stainless steel water heating equipment. Nicholas For more information, visitwww.triangletube.com.LinksTriangle Tube Share This Story