Steel Cold Rolled Deformed Bar

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Chemical Composition: (Please kindly find our chemistry of our material based on HRB500 as below for your information)


Technical data of the original chemical composition (%)














Physical capability

Yield Strength (N/cm²)

Tensile Strength (N/cm²)

Elongation (%)




Cold Rolled Techniques

Yield Point: 545-565mpa

Deformed bar is widely used in buildings, bridges, roads and other engineering construction. Big to highways, railways, bridges, culverts, tunnels, public facilities such as flood control, dam, small to housing construction, beam, column, wall and the foundation of the plate, deformed bar is an integral structure material. With the development of world economy  and the vigorous development of infrastructure construction, real estate, the demand for deformed bar will be larger and larger.

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Q:How to calculate the theoretical elongation of finishing thread steel?
The grade of prestressed concrete rebar is defined by the yield strength. The code is PHB, plus the minimum value of the specified yield strength. P, H and B are English first letters of Prestressing, Hot and Bars respectively. For example: PHB830 represents a steel bar with a minimum yield strength of 830MPa.
Q:Is the theoretical weight of threaded steel and round steel the same?
The theoretical weight of threaded steel and round steel is the same. The middle part of the steel bar size ratio is small, the design time actually unit weight are the same, just screw steel crescent and transverse ribs prominent, resulting in heavy steel should be better than the illusion of formula is 0.00617 multiplied by the square of the diameter / m.
Q:What is the difference between the material of steel thread and its use?
There are two kinds of thread classification methods:First, the geometric shapes are classified and classified according to the cross sectional shape of the ribs and the pitch of the ribs. For example, the British Standard (BS4449), the steel is classified into type I and type ii.Two is in the performance classification (grade), for example our country standard (G B1499), according to the strength level (yield / tensile strength) will be divided into 3 grades of thread steel;
Q:Now, the two project is to use rebar or rebar?
Share the benefits of reinforced concrete supporting beam cutting cutting special underwater cutting chisel drill hole cutting hotel renovation transformation of old buildings structure strengthening cracked foundation pit reinforcement CFRP bonded steel reinforcement waterproof engineering service you need to contact my friends
Q:What are the marking of the steel bars on the mills? Which factory is the 2LG16 thread?
2LG16 thread manufacturer is the Laiwu iron and steel works, referred to as "Laiwu Steel", the letter "LG", indicating that the steel produced by the diameter of 16 of the two grade thread steel.
Q:What does "4E" mean on the rebar?
Hrb400e refers to three earthquake resistant steel bars. Compared with the ordinary reinforced phase, the biggest advantage is that the tensile strength and elongation are relatively large, for example, the tensile strength of common grade HRB400 three reinforcement requirements of more than 400 MPa; if hrb400e is aseismic reinforcement, the tensile strength is more than 550MPa.
Q:How much is the difference between the three grade thread steel and the two grade thread steel?
This depends on the size of the local quantity, and some are relatively hot specifications, prices may be a lot worse, may also be more expensive than the three class 2, but generally about 200 difference bar
Q:What does "4esg25" mean on thread steel?
4esg25 these are the basic information of reinforcement, equivalent to the identity card information. Represents grade four steel (HRB500), and ESG represents the modulus of elasticity of the reinforcement in the reinforcement; then the nominal diameter is 25.
Q:What are the main uses of threaded steel?
The rebar is a kind of small section steel, mainly used for the skeleton of reinforced concrete construction members. Steel is usually used for reinforced concrete, its role is to increase the friction fringe, the rebar and concrete secant integrally formed together, tic phenomenon can not occur in the role of external force, improve the strength of concrete.
Q:Why is the threaded steel thread?
The difference between round bar and round bar is that the surface has longitudinal ribs and transverse ribs, usually with two longitudinal ribs and transverse ribs uniformly distributed along the length direction. The rebar is a kind of small section steel, mainly used for the skeleton of reinforced concrete construction members. In use, some mechanical strength, bending deformation property and welding performance are required.

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