Square tubes and rectangular tubes are steel pipes with a square or rectangular cross-section, commonly made from carbon steel, alloy steel, or stainless steel. Thanks to their flat sides and angular geometry, they are more suitable than round pipes in many applications, such as structural frameworks, machinery, and construction projects. To maintain their quality and service life, proper storage is essential to prevent rust, deformation, and surface damage. Below are detailed guidelines for storing square and rectangular tubes safely and effectively.