Square and rectangular steel box sections are lengths of hollow box section steel with a rectangular profile, curved corners and a hollow centre. They are some of the most versatile mild steel box sections, with applications ranging from cabinet making and light fabrication, through to their use as pipes and conduits. James Dunkerley Steels supply rectangular box section steel in a range of cross-sectional sizes and thicknesses, to suit a highly diverse variety of applications.

Of course, a square is simply a rectangle whose sides are all the same length, but for simplicity’s sake they tend to be listed as a separate product category entirely.