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Steel bar specification
The specifications of steel bars are usually expressed in nominal diameter (mm), and their sizes can range from 6mm to 50mm, among which the common specifications are 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 20mm, 25mm, 32mm and 40 mm. Different specifications of steel bars have corresponding standard requirements in mechanical properties, chemical composition, dimensional tolerance and so on.

Steel bar is a kind of steel widely used in buildings and civil engineering structures, mainly used in reinforced concrete structures, prestressed concrete structures, steel structures and so on. The specifications and models of steel bars can be selected according to the use requirements. For example, HRB400 or HRB500 is usually used for building steel bars, while steel bars with higher strength grade may be used for special engineering structures such as bridges and expressways.

When selecting rebar, we should not only consider the specifications and models, but also pay attention to the material, production process, quality certificate and other related information of rebar to ensure that the purchased rebar meets the engineering design and quality requirements.