These suppliers offer the widest variety of sizes, alloys (like 6061 and 6063), and custom cutting services:
: Stocks the SteelWorks brand in various sizes, such as 1 in. x 3 ft. tubes for ~$17.99. Specialty Local Suppliers (Chicago Area) For larger quantities or professional fabrication needs: Buy Aluminum Square Tube Online - Metals Depot where to buy aluminum square tubing
: Offers 6061 and 6063 aluminum square tubing with direct shipping to your location. These suppliers offer the widest variety of sizes,
Aluminum square tubing can be purchased from major home improvement retailers, specialized metal suppliers, and online marketplaces. While "Helpful Paper" does not appear to be a standard industrial metal supplier, you can find high-quality aluminum tubing through several reputable sources. Online Metal Specialists Online Metal Specialists : Carries a large inventory
: Carries a large inventory of various aluminum tube styles and shapes. Major Retailers (Local & Online)
: Stocks hundreds of sizes available for online purchase in precut or mill lengths, with custom "Cut to Size" options for small or large quantities.