Galvanized square pipe, also known as galvanized rectangular pipe and hot-dip galvanized rectangular pipe, refers to a kind of pipe coated with a layer of zinc on the surface of the rectangular pipe. Galvanized square pipe is generally made of low carbon steel. After processing, welding, casting and other means of formation. Galvanized square pipe has anti-rust, anti-corrosion properties, but also can provide efficient impact resistance and insulation properties.