1posts are manufactured conforming to fhwa and atssa standard. 2steel material conforms to astm a1011, grade 50. Yield strength after cold-forming is 60, 000 psi minimum. 3posts are manufactured from hot-dipped galvanized steel conforming to astm a653, g90 or g140. The posts are also coated with a chromate conversion coating and a clear organic polymer topcoat. 4punching with 7/16" holes on 1" centers on all four sides down the entire length of the post. 5five kinds of cross section including 1.50â?�x1.50", 1.75", 2.00", 2.25", and 2.50"x2.50". 6available in 12 and 14 gauge thickness with all kinds of length according to your demand. 7powder coated sign posts with all kinds of colors are also available.