Rectangular tube, also known as rectangular hollow section (RHS) or rectangular steel tube, is a metal profile with a hollow rectangular cross-section. It is widely used in construction, engineering, and manufacturing applications due to its strength and versatility. Rectangular tubes are known for their structural and architectural applications, including construction, manufacturing, and design. They offer strength, durability, and aesthetic appeal.

Rectangular tubes are available in various materials, such as low-carbon steel, stainless steel, and more. They come in different sizes and wall thicknesses, and can be customized according to customer requirements. These tubes can be welded to achieve different forms and cater to a wide range of applications.