Galvanized Steel Rectangle Tube ASTM A653 is a strong metal tube with a rectangular shape, coated in zinc to resist rust and corrosion. It's widely used in construction for framing and structural support due to its durability. Whether you're building a railing or a framework, this tube offers reliable strength and longevity. Meeting ASTM standards ensures it meets quality requirements, making it a practical choice for various projects needing dependable, long-lasting materials.