The Zidell Companies is a collection of three local, family owned and operated businesses in Portland, Oregon. The Zidell Com ... panies are known individually as - Zidell Marine Corporation, this decades-old company is well known in the Portland maritime industry and began by scrapping steel plate from WWII ships and before transitioning into the construction of new steel barges. To date, Zidell has built and launched over 300 vessels. Tube Forgings of America; born of Zidell’s expert knowledge of pipes and fittings salvaged from ships, Tube Forgings of America is now one of the nation’s leading manufacturers of precision welding fittings. ZRZ Realty; responsible for Zidell Yards, the ambitious redevelopment project involving a former industrial site on the waterfront of the Willamette River just south of downtown Portland, OR. read more