Object: Electronic Auction - Hiring A Specialized Company To Purchase Steel Tubes With A Circular Section, For Metal Supports. The Tubes Must Be Made Of Carbon Steel Copant 1010/1020, Grade C, With Seams, Seamless And With Smooth Ends, In Accordance With Abnt Nbr 8261:2019; Hot-Dip Galvanized Carbon Steel Tubes, Diameter 2 ½, Length 4.00M, Minimum Thickness 3.75 Mm, Internal Diameter 59.75 Mm, External Diameter 63.5 Mm.