Product Description
Steel rebars are divided into: non-alloy steel rebars, low alloy steel rebars, alloy steel rebars
According to the production process, steel rebars are divided into: hot-rolled steel rebars, heat-treated steel rebars, residual heat-treated steel bars, cold-rolled steel bars, cold-drawn steel bars, etc.
Reinforcing rebars are divided into round rebars and deformed rebars according to their shapes.
Deformed steel rebars are crescent rib rebars (spiral, herringbone, with longitudinal ribs, without longitudinal ribs)
The mechanical properties of steel rebars are expressed in strength grades in their grades, and the unit is Mpa
The strength grades of commonly used steel rebars are as follows:
Hot-rolled ribbed steel rebars for reinforced concrete: HRB335, HRB400, HRB500
Hot-rolled round rebar for reinforced concrete: Q235
Low carbon steel hot-rolled round rebar: Q235
Cold-rolled ribbed rebars: CRB550, CRB650, CRB800, CRB970, CRB1170
Small-diameter steel rebars are called steel wires, and steel wires are divided into cold-drawn steel wires, scored steel wires, spiral steel wires, and low-alloy steel wires.
A bundle of steel wires that are twisted together is called a steel strand.
Ribbed steel rebar
1. Brand HRB335, ordinary hot-rolled ribbed steel bar. In the construction site, the symbol of grade II is commonly used, commonly known as the second grade steel.
The tensile strength is required to be greater than or equal to 455 MPa, and the yield strength is greater than or equal to 335 MPa.
2. Brand HRB400, ordinary hot-rolled ribbed steel bar. In construction sites, the symbol of grade III is commonly used, commonly known as grade 3 steel.
The tensile strength is required to be greater than or equal to 540MPa, and the yield strength is greater than or equal to 400MPa.
3. The grade HRB400E is the same as the steel bar of the same type, and is used for higher seismic structures.
4. Brand HRBF400, fine grain hot-rolled ribbed steel bar.
The tensile strength is required to be greater than or equal to 540 MPa, and the yield strength is greater than or equal to 400 MPa.
5. The grade HRBF400E is the same as the steel bar of the same type, and is used for higher seismic structures.
6. Brand HRB500, ordinary hot-rolled ribbed steel bar. In construction sites, the symbol of grade IV is commonly used, commonly known as grade four steel.
The tensile strength is required to be greater than or equal to 630MPa, and the yield strength is greater than or equal to 500MPa.
7. The grade HRB500E is the same as the steel bar of the same type, and is used for higher seismic structures.
8. Brand HRBF500, fine-grained hot-rolled ribbed steel bar.
The tensile strength is required to be greater than or equal to 630MPa, and the yield strength is greater than or equal to 500MPa.
9. The grade of HRBF500E is the same as other steel bars of the same type, and is used for higher seismic structures.
