2x2 aluminum square tubing center load. round post. 6061 is the most versatile of the heat treatable aluminum alloys. Bertha Screen Frame Connectors. The most used grades of aluminum square tube are 6061 and 6063. As long as the outside tubing has the . A viable and secure way to join square aluminum tubing is with tubing connectors. These were the perfect dimensions to fit my metal fence post which had a 2" (outside dimension) square hole. Standard sizes & custom cuts: Stock tubing is 21 ft. Eagle Aluminum’s aluminum square tubing offers superior strength, durability, and corrosion resistance for a wide range of applications. kmimyucsugvvqidhwbfmteqyqxuzmuxlqximywmmpfqsqgirvqjuixyoqvptblbxhhfaergucuuhp