B.I. Rectangular Tube

Rectangular Tube is made from coils that are welded from the inside to form its shape. It is commonly used as a structural component in buildings or vehicles, as fences, signposts, door jambs, grills, and railings.

It is available in 2 variants – black iron (B.I.) and galvanized iron (G.I.). Galvanized Iron is covered with zinc to make steel resistant to rust. Black Iron is uncoated and the black color is from the iron oxide made on its surface throughout the manufacturing process.