Flat bars area flat, rectangular section with square edges varying in sizes. This cost-effective steel product is suitable for a wide variety of applications and is distributed into the construction, engineering, manufacturing, mining, grating, fabrication and many other industries.Flat bars are available in a range of options. Typically, the range between 12 - 100 mm with a thickness of 2 mm, 2.5 mm, 2.7 mm, and 3 mm and a length of 6 m.