Aluminum Square Tubing 3x3, Popular for its light weight, good strength, and corrosion resistance, aluminum square tube is used in structural applications. Square metal tube stock is used in both structural and architectural applications. Aluminum Square Tube has square corners inside and outside, with no weld seam. Our available aluminum square tubing sizes are 1ft, 2ft, 3ft, 4ft, 5ft, 6ft, 7ft, 8ft, 20ft. 3 days ago · 3"x 3"x 1/8" Wall X 12" Long Aluminum Square Tube 6063 t52 3" Sq X . 1-16 of 101 results for "3 inch aluminum square tubing" Results Check each product page for other buying options. We carry aluminum square tubing for sale in 6060 | 6061 and 6063. This thin metal tube is made out of 6063-T6 aluminum metal with a natural mill finish. Serving DFW, Austin, Round Rock & Pflugerville with cut-to-size metal since 1955. Elevate construction or DIY projects with our 3 x 3 x 1/8 wall square tube featuring 1. bw, vp, lbtkh, odce6, 36, ckkdyr, orlsv, s5bkj9, cott1, jffwud,