Cold-rolled Ribbed Steel Bars
Cold-rolled ribbed steel bars are a type of building material that has been common in the construction industry for many years. Due to their strength and long-lasting durability, these bars are perfect for construction applications where high levels of strength and rigidity are required. As the name implies, these bars are made from cold-rolled steel, which is created by processing the raw steel alloy at a temperature lower than the alloys recrystallization temperature. The cold-rolling process is done by a series of rollers that work together, gradually decreasing the thickness of the steel alloy and increasing its strength. This process also creates the ribbed pattern in the steel, which is designed to increase its strength, stiffness, and resistance to corrosion and fatigue.
The nominal diameter range and shape of cold-rolled ribbed steel bars are specified in the Chinese national standard GB 13788-2000. According to this standard, the nominal diameter of these bars ranges from 5.5 to 14mm and are supplied in two shapes – straight and twisted. Twisted bars are also known as ribbed bars and are composed of two layers of steel wound around each other which further increases the strength of the bar.
Due to the reliable quality and superior properties, cold-rolled ribbed steel bars are widely used in a multitude of applications across the construction and civil engineering industries. Their primary use is in reinforced concrete, as they are used as the primary reinforcement material in this type of structure. They are also used in bridge decks, pre-stressed concrete systems, and other types of structures that require superior strength and long-term durability. Additionally, ribbed steel bars are becoming increasingly popular for the fabrication of stainless steel columns, beams, and other structural components due to their improved resistance to corrosion.
Cold-rolled ribbed steel bars are a reliable and economical building material that can be relied upon to add strength and rigidity to many types of structures. Although ribbed steel bars can be expensive, they offer superior properties when compared to other building materials, such as improved strength and better corrosion resistance. Therefore, they are an invaluable addition to any construction project.
