High quality hot rolled deformed bar 6mm-50mm

High quality hot rolled deformed bar 6mm-50mm System 1

High quality hot rolled deformed bar 6mm-50mm

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 25 m.t.

Supply Capability:: 20000000 m.t./month

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Product Description:

Specifications of HRB400 Deformed Steel Bar:

Standard	GB	HRB400
Diameter	6mm,8mm,10mm,12mm,14mm,16mm,18mm,20mm, 22mm,25mm,28mm,32mm,36mm,40mm,50mm

Length	6M, 9M,12M or as required
Place of origin	Hebei, China mainland
Advantages	exact size, regular package, chemical and mechanical properties are stable.
Type	Hot rolled deformed steel bar
Brand name	DRAGON

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

Grade	Technical data of the original chemical composition (%)
	C	Mn	Si	S	P		V
HRB400	≤0.25	≤1.60	≤0.80	≤0.045	≤0.045		0.04-0.12
	Physical capability
	Yield Strength (N/cm²)		Tensile Strength (N/cm²)			Elongation (%)
	≥400		≥570			≥14

Theoretical weight and section area of each diameter as below for your information:

Diameter(mm)	Section area (mm²)	Mass(kg/m)	Weight of 12m bar(kg)
6	28.27	0.222	2.664
8	50.27	0.395	4.74
10	78.54	0.617	7.404
12	113.1	0.888	10.656
14	153.9	1.21	14.52
16	201.1	1.58	18.96
18	254.5	2.00	24
20	314.2	2.47	29.64
22	380.1	2.98	35.76
25	490.9	3.85	46.2
28	615.8	4.83	57.96
32	804.2	6.31	75.72
36	1018	7.99	98.88
40	1257	9.87	118.44
50	1964	15.42	185.04

Usage and Applications of HRB400 Deformed Steel Bar:

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..

Packaging & Delivery of HRB400 Deformed Steel Bar:

Packaging Detail: products are packed in bundle and then shipped by container or bulk vessel, deformed bar is usually naked strapping delivery, when storing, please pay attention to moisture proof. The performance of rust will produce adverse effect.

Each bundle weight: 2-3MT, or as required

Payment term: TT or L/C

Delivery Detail: within 45 days after received advanced payment or LC.

Label: to be specified by customer, generally, each bundle has 1-2 labels

Trade terms: FOB, CFR, CIF

Q:What is the role of steel rebars in tunnel construction?: Steel rebars play a crucial role in tunnel construction as they provide structural reinforcement to ensure the stability and strength of the tunnel. These steel bars are used to reinforce the concrete, increasing its tensile strength and preventing cracking or collapsing under the pressure exerted by the surrounding soil and water. Additionally, rebars help to distribute the load evenly throughout the tunnel, enhancing its overall durability and resistance to external forces.

Q:Can steel rebars be used in high-strength concrete?: Yes, steel rebars can be used in high-strength concrete. In fact, steel rebars are commonly used to reinforce concrete structures, regardless of the concrete strength. High-strength concrete refers to concrete that has a compressive strength significantly higher than conventional concrete. It typically has a compressive strength of 6,000 psi (pounds per square inch) or more. Steel rebars are essential in high-strength concrete to provide the necessary tensile strength. While concrete has excellent compressive strength, it is relatively weak in tension. By incorporating steel rebars into the concrete, the composite material becomes stronger and more durable. The rebars act as reinforcement, resisting the tensile forces and preventing cracks or failure in the structure. However, it is important to note that the selection of the appropriate steel rebar for high-strength concrete is crucial. The rebars used should have sufficient strength and ductility to withstand the higher stresses and strains associated with high-strength concrete. Additionally, proper placement, spacing, and anchorage of the rebars are essential to ensure effective reinforcement and optimal performance of the concrete structure. In summary, steel rebars can definitely be used in high-strength concrete to enhance its tensile strength and overall structural integrity.

Q:Can steel rebars be used in railway bridge construction?: Absolutely, railway bridge construction can utilize steel rebars. In the construction sector, steel rebars are frequently employed to strengthen concrete structures, such as bridges. Railway bridges necessitate exceptional strength and durability to endure heavy loads, continual vibrations, and strains triggered by passing trains. By reinforcing concrete structures, steel rebars augment their ability to bear loads and safeguard the long-term structural soundness of the bridge. Furthermore, steel rebars can be readily tailored to cater to the precise design prerequisites of railway bridges, making them a fitting option for construction in this particular setting.

Q:Are there any limitations on the maximum length of steel rebars?: Yes, there are limitations on the maximum length of steel rebars. The length of steel rebars is typically determined based on practical considerations such as transportation limitations, handling capabilities, and construction site requirements. Additionally, longer rebars may be more prone to bending or warping during installation, which can affect their structural integrity. Therefore, there are industry standards and guidelines that specify maximum lengths for steel rebars to ensure their safe and efficient use in construction projects.

Q:How to calculate the theory of steel thread?: Thread: a spirally curved, continuous raised part with a specified cross section on the surface of a cylinder or cone. According to its parent thread shape is divided into cylindrical and conical screw threads; according to their position in the matrix is divided into outer and inner thread, according to the section shape (teeth) divided into triangular thread, rectangular screw, trapezoidal thread, serrated thread and other special shape screw.

Q:What is the bending radius allowed for steel rebars?: The bending radius allowed for steel rebars varies depending on the diameter of the rebar. Generally, the minimum bending radius for steel rebars is about four times the diameter of the bar.

Q:What is the elongation of steel rebars?: The elongation of steel rebars refers to the amount of deformation or stretching that a steel rebar can undergo before it fractures or breaks. It is a measure of the ductility or flexibility of the steel rebar. Elongation is typically expressed as a percentage of the original length of the rebar. The elongation of steel rebars varies depending on the grade or type of steel used and the manufacturing processes involved. Generally, steel rebars have a relatively high elongation compared to other construction materials such as concrete or timber. This makes them suitable for applications where flexibility and resistance to deformation are important, such as in reinforced concrete structures. The elongation of steel rebars is an important factor to consider in structural design and construction. It influences the ability of a rebar to withstand loads, especially in situations where the rebar is subjected to tension or bending forces. Higher elongation values indicate a greater ability of the rebar to stretch and deform without breaking, which improves the overall performance and safety of the structure. To ensure the proper selection and use of steel rebars, it is essential to consult the relevant standards and specifications provided by regulatory bodies and industry organizations. These guidelines provide specific requirements and recommendations for the elongation of steel rebars, as well as other mechanical properties, to ensure the structural integrity of construction projects.

Q:How do steel rebars affect the overall cost of a construction project?: Steel rebars can significantly affect the overall cost of a construction project. While they add to the material and labor costs, rebars also provide structural strength and reinforcement to concrete, reducing the risk of structural failures and increasing the project's durability. Therefore, although rebars may increase the upfront expenses, their use can help prevent expensive repairs and maintenance in the long run, making them a cost-effective investment in the overall construction project.

Q:Why is the earthing device forbidden to use thread steel instead of round steel as lap steel bar?: The mechanical strength of the steel thread is destroyed. Because the supporting point is only the ground, it is easy to cut the steel directly if the thread is not vertical. Therefore, we need to use angle iron, steel pipe or smooth steel round bar.

Q:Can steel rebars be galvanized for additional protection?: Yes, steel rebars can be galvanized for additional protection. Galvanizing involves applying a protective zinc coating to the surface of the steel rebar, which helps to prevent corrosion and increases its lifespan.

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