Deformed bars are steel bars that have surface projections and indentations within them (sometimes referred to as ‘ribs’) thus enabling them to have a greater bond strength and overall friction in construction when compared to the traditional smooth and round rebars. 

Deformed bars, and all types of reinforcing bars in general, are commonly used in construction to set up the skeleton or the foundation of the structure before anything else is put into motion.

Because of this purpose, deformed bars have to be extremely strong and durable in order to withstand tension loads and pressure throughout the construction process.