Diversified Metal Products – Supplies from an extensive and diverse Inventory of Tubing from Locations across the United States. Carbon Steel, Low-Temp, Stainless Steel, Aluminum, Duplex, Alloy 20 and Nickel Alloy Grades are stocked in both Seamless and Welded forms. Our Pipe and Tubing can be supplied per your Approved Manufacturers List including USA Mills, European Mills, Japanese Mills, Korean Mills and Approved Chinese Origin Mills.