2 inch aluminum square tubing 37" inch Price, product page $88. 63 $ 88 . 6061 Aluminum aluminum is the most commonly used aluminum alloy in construction and architecture. Types of Metal » Aluminum » Aluminum Square & Rectangular Tube » 2″ x 6″ x . 125″wall Aluminum Rectangular Tube 6063-T52 2″ x 6″ x . TCF-521150-BK. 24 USD Sale price From $ 6. Alonzo St. Aluminum square tubing sizes are represented by a three-digit number that indicates the outside diameter, followed by a two-digit number that indicates the wall thickness. 5V CWSR: This is Cold Worked Stress Relieved Titanium (CWSR Ti). wycfzhtgjxeksantydpsvekycwfgxzudxuaexpltcoajcgxlqcvuufeeojkaigdbfjzws