Flat bars are long, rectangular pieces of metal or other materials that have a flat surface and uniform thickness. They are commonly used in construction, manufacturing, and various DIY projects. Flat bars can be made from materials like steel, aluminum, or plastic, and they come in different sizes and thicknesses to suit specific needs. These bars are often used for structural support, as they can be easily cut, welded, or drilled. In addition to construction, flat bars are also utilized in the fabrication of furniture, automotive parts, and machinery, making them versatile components in many industries.