Psb830 fine rolled steel bar classification

There are two common classification methods for psb830 rolled steel bars: one is the geometric shape, and the classification or type is based on the cross-sectional shape of the transverse ribs and the spacing of the ribs. For example, in British Standard (BS4449), rebar is divided into Type I, Type II. This classification mainly reflects the grip properties of the rebar. The second is performance classification (level), such as China's current implementation standards, rebar (G B1499.2-2007) wire is 1499.1-2008), according to the strength level (yield point / tensile strength) will be divided into rebar Three grades; Japanese Industrial Standards (JI SG3112), the rebar is divided into five types according to comprehensive performance; the British Standard (BS4461) also specifies several grades of rebar performance tests. In addition, rebar can be classified according to its purpose. For example, it can be divided into ordinary rebar for reinforced concrete and heat-treated rebar for prestressed reinforced concrete.

Finished rebar rebar with steel is a small steel. Including hot-rolled round rebar for steel-reinforced concrete, thermal-reinforced threaded steel for prestressed concrete, and hot-rolled reinforced rebar for steel-reinforced concrete. Cold rolled strip rebar. In addition to round steel, others are also known as rebar. Because the surface of the steel rolled into ear or thread ribs during rolling, it is a steel for rebar steel in the construction industry.

Finished rolling rebars for rebars and concretes are straight or rod-shaped steels for the reinforcement of steel-reinforced concrete. The shapes of the rebars are divided into two types: light round rebar and deformed rebar. The delivery status is straight and round. Species. Light round rolling rebar is actually a small round steel and coil of ordinary mild steel.
Finished rebars are surface ribbed rebars, usually with 2 longitudinal ribs and transverse ribs evenly distributed along the length. The lateral ribs are spiral, herringbone and crescent shaped. It is expressed in millimeters of nominal diameter. The nominal diameter of a deformed rebar corresponds to the nominal diameter of a light round rebar with an equal cross-section. Finished rebars have a nominal diameter of 8-50 mm and the recommended diameters are 8, 12, 16, 20, 25, 32, and 40 mm.

Finished rebars are mainly subjected to tensile stress in concrete. Deformed rebar due to the role of ribs, and concrete have a greater ability to bond, so it can better withstand the role of external forces. Rebar is widely used in a variety of building structures, especially large, heavy, lightweight thin-walled and high-rise building structures.

Finished rebar can be sorted by geometry and performance. Classification according to geometry is based on the cross-sectional shape of the ribs and the different spacing of the ribs to classify or classify, such as the British Standard (BS4449), which classifies the finished rolled rebar as type I and type II. This classification is mainly to respond to the gripping properties of rebar.


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