2x2 Square Tubing 20 Ft Price, x 2 in. . Square metal tube stock is used in both structural and architectural applications. Galvanized steel tube is compliant with ASTM A500 specifications. The outer ply of material on this tube is a 2x2 twill weave (diagonal appearance seen below) which will prevent fiber breakout better than unidirectional material. ASTM A500 Steel is a standard specification for cold-formed welded and seamless carbon steel structural tubing in round, square and rectangular shapes. Whether you're looking for popular sizes like 2x2 square tubing or 1-inch square tubing, you can find them at Online Metals available in full size and custom cut lengths. Gray Square Fence Tubing. Steel Supply, L. Largest selection of square tube at wholesale prices. crdd, utkk, 4e9, zdr5v, 9pn, lalw0k, ulshx, 1uq8d, a7emto, jo7lzhhs,