Hot rolled steel
2017-02-07 09:21 Click：times
Hot rolled steel products
Steel is known as hot rolled ribbed bar. The hot rolled steel bars are made up of the lowest yield points of HRB and grade. H, R, B were hot-rolled (Hotrolled), ribbed (Ribbed), steel (Bars) three words in the first letter of the English alphabet. Hot rolled ribbed bar is divided into HRB335 (old No. 20MnSi), HRB400 (20MnSiV, 20MnSiNb, veteran, 20Mnti), HRB500 three brands.
Steel bars for concrete reinforcement is straight or strip steel plate reinforced concrete reinforcement steel, its shape is divided into round steel bar and deformed steel two, straight and coiled state for delivery two.
Round bar is in fact the ordinary low carbon steel small round and round. The deformed steel bar is a ribbed steel bar with 2 longitudinal ribs and transverse ribs uniformly distributed along the length direction. The transverse rib shape is helical, herringbone, crescent 3. Expressed in millimeters of nominal diameter. Nominal diameter of deformed steel bars with a nominal diameter equal to that of the cross section. The nominal diameter of the reinforcing steel bar is 8-50 mm, and the diameter is 8, 12, 16, 20, 25, 32, 40 mm.
The main tensile stress of steel bar in concrete. Because of the action of the rib, the deformed steel bar has higher bond ability with the concrete, and thus can better bear the external force. Steel bars are widely used in all kinds of building structures, especially large, heavy, light and high rise buildings.
Weight calculation formula: W= 0.00617 x D x D d= section diameter mm.
Hot rolled steel parameter
Grade: HRB335, HRB400, HRB500
Nominal diameter a mm:6-25 28-50, 6-25 28-50, 6-25 28-50
Bending radius of bending test: 3A 4a, 4A 5a, 6a 7a.
The products have been exported to the United States, France, Canada, Indonesia, Russia, Vietnam, Australia, South Korea, Iran and other countries, to obtain customer acclaim.
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