Steel posts conform to the standard specification for Hot Rolled Carbon Sheet Steel, Structural quality ASTM designation A570, Grade 50. SHAPE The cross section of the post shall be a square tube formed of 10 gauge (.135” U.S.S. Gauge) or 12 gauge (.105” U.S.S Gauge) or 14 gauge (.083” U.S.S. Gauge) steel, carefully rolled to size and welded in the corner. LENGTH The length of the post shall be order in 10’, 11’ or 12’ lengths with a length tolerance of +/- 0.25”. FABRICATION The furnished members shall be straight and shall have a smooth uniform finish. It shall be possible to telescope consecutive sizes of tubes freely with a minimum amount of play. GALVANIZED POSTS (PRE-GALV PLUS AND QWIK-PUNCH) Sign posts are galvanized conforming to ASTM specification A-653 des. G-90. Corner weld is zinc coated after scarfing operation. Qwik-Punch die-cut posts are in-line galvanized per AASHTO M-120, and all galvanized products receive a conversion coating and a clear organic polymer topcoat.