B500A grade steel is usually used for steel mesh products while B500B grade steel is used for steel bars. B500C steel is rarely required, and it is always worthwhile for structural engineers to check whether B500B grade steel can be used instead of B500C, because B500C usually has a significant cost overhead.

Deformed bar, also known as rebar (short for reinforcing bar), is a steel bar or mesh of steel wires used as tension devices in reinforced concrete and reinforced masonry structures to strengthen and hold the concrete in tension. Deformed bar’s surface is often patterned to form a better bond with the concrete.

HPB300/HRB335/HRB400/HRB500 Reinforcement is a European standard steel bar. Generally, GB1499.2-2007 standard deformed steel bars are made using the hot-rolled method, meaning that these are the most common types of deformed steel bars. These are available in different lengths and sizes, all the way from 6 mm in diameter to 50 mm in diameter. When it comes to length, 9 m and 12 m are the common sizes.