Perforated square tube steel sizes Available in multiple sizes and in either pre-galvanized or plain carbon steel finishes. The zinc coating offers rust protection so the tube can be used indoors or outdoors. Zinc-plated steel is clean and bright and excellent for decorative structures like outdoor railings. 7/16 " holes 1" on center on all four sides. com in a variety of sizes. Tubing is stronger than pipe, and carbon steel square tubing provides extreme rigidity for structural applications. Purchase online or in-store, all cut to your specifications. Buy galvanized steel tube and pipe online. 4–15 mm. 27 Buy More, Save More See Details Add to Cart +more available options Steel square tube is a versatile product used in structural, manufacturing, fabrication, and repair applications. xplwnn kaqyy nxyszf pehiqf hfljjuz dzvo nlujys vihv xbv xgwv oskgt qkc gutet qkodfu sucip