A.D. Tubi USA, Inc. is a wholly owned subsidiary of A.D. Tubi Inossidabili SpA. A.D. Tubi USA was founded in 2018 as an extension of A.D. Tubi Inossidabili to support the growing demand for high quality specialty welded tubes in the North American markets. Like its parent company, A.D. Tubi USA produces welded tubes made of stainless steel (austenitic and superaustenitic), 6 Moly, duplex, nickel alloys, titanium.