What is the use of rectangular steel pipe? Rectangular steel pipes are used in a wide range of applications, including construction, infrastructure, and manufacturing. They offer high strength and durability, making them ideal for structural support, as well as for the transportation of fluids and gases. As a rectangular steel pipe supplier, Steel Search can provide a variety of sizes and specifications to meet specific project needs. They also offer customized fabrication services to ensure that the pipes are cut and shaped to the required dimensions. As a rectangular steel pipe exporter, Steel Search can also provide international shipping services to customers around the world.