In China, steel bars are the most commonly used material to reinforce concrete in the construction of buildings and infrastructure. Steel bars, also known as steel rods or rebar, are produced by melting iron ore, limestone, clay and other components in a furnace before being formed into steel bars. Generally, steel bars are available in 8mm to 40mm diameters and are supplied in various grades suitable for various applications.
Steel bars generally have a much higher tensile strength than other materials and are used extensively in the civil construction industry, in the form of reinforcing rods, mesh and cables. Steel bars are also used in the manufacturing of furniture, stairs and railings.
In the construction industry, steel bars are used to support and reinforce concrete. They are placed within the forms at the time of pouring the concrete. This provides reinforcement against cracks and improves the overall strength of the concrete structure.
Steel bars also play an important role in seismic engineering. They are used to provide reinforcements in areas that are prone to earthquakes or other ground movement. Steel bars are usually connected together in a network and tied to the building structure. This helps to ensure that the structure remains stable during a seismic event.
Steel bars can also be used to create curved structures, such as stairwells. This is accomplished by bending the steel bars into the desired shape while they are still hot. Once cooled, the bars retain their shape, providing support and stability to the structure.
Steel bars can also be used to create various types of architectural designs. Steel bars can be cut and curved into fine decorative pieces to create unique designs, such as trellises, railings and columns. The flexibility of steel bars also makes them ideal for creating intricate and detailed designs.
Steel bars are an essential material in the construction industry, both for reinforcing concrete and for creating decorative designs. They are available in a range of sizes and grades, and are used in various applications. Steel bars are strong and durable, and their ability to retain their shape enables them to support and reinforce concrete structures to help them withstand earthquakes and other natural disasters.
