Hot rolled deformed bar BS4449 G460B HRB400

Hot rolled deformed bar BS4449 G460B HRB400 System 1

Hot rolled deformed bar BS4449 G460B HRB400

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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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Deformed Bar Details:

Minimum Order Quantity:	m.t.	Unit:	m.t.	Loading Port:
Supply Ability:	m.t./month	Payment Terms:	TT OR LC	Package:	wire rod packing

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:Can steel rebars be used in soundproof structures?: Steel rebars, although they can be utilized in soundproof structures, do not bear the sole responsibility for soundproofing. Their main purpose lies in reinforcing concrete structures like walls or floors. While they can somewhat assist in diminishing sound transmission, accomplishing effective soundproofing necessitates the use of supplementary materials and techniques. To establish a soundproof structure, various factors must be taken into account. One crucial aspect is the mass of the structure. Due to their weight and density, steel rebars augment the mass of the structure, thus aiding in reducing sound transmission. Nevertheless, the efficacy of soundproofing also relies on the overall design, construction techniques, and integration of other sound-absorbing materials. To heighten the soundproofing capabilities of a structure, additional materials can be incorporated, such as acoustic insulation, soundproofing panels, or resilient channels. Acoustic insulation materials like mineral wool or acoustic foam can be installed within the walls or floors to absorb sound waves and prevent their passage through the structure. Soundproofing panels can also be affixed to surfaces to either reflect or absorb sound waves, further diminishing noise transmission. Furthermore, proper construction techniques should be employed to ensure the absence of gaps or air leaks that may permit sound to travel through. The utilization of resilient channels, which isolate the structure from surrounding surfaces, can also aid in reducing sound transmission. In conclusion, while steel rebars can contribute to the soundproofing of a structure through the augmentation of its mass, they alone are inadequate for achieving a fully soundproof environment. Effective soundproofing necessitates a combination of design, construction techniques, and the integration of supplementary sound-absorbing materials to attain the desired level of sound reduction.

Q:How are steel rebars used in the construction of wastewater treatment plants?: Steel rebars are used in the construction of wastewater treatment plants to reinforce the concrete structures, such as tanks and basins, that are essential for storing and treating wastewater. The rebars provide strength and stability to these structures, ensuring they can withstand the weight of the water and the various chemicals used in the treatment process. Additionally, the rebars help to prevent cracking and structural failure, ensuring the longevity and reliability of the wastewater treatment plant.

Q:What is the bending capacity of steel rebars?: The bending capacity of steel rebars refers to the maximum amount of stress or load that a rebar can withstand before it starts to bend or deform. This capacity is determined by various factors such as the diameter and grade of the rebar, as well as the specific application and design requirements.

Q:How do steel rebars contribute to the strength of concrete structures?: Steel rebars contribute to the strength of concrete structures by providing reinforcement and increasing their durability. When embedded within concrete, rebars absorb tension forces that concrete alone cannot withstand, preventing cracking and improving the overall structural integrity. This combination of steel and concrete creates a composite material that can withstand greater loads and stresses, making it suitable for constructing buildings, bridges, and other infrastructure that require strength and stability.

Q:What are the cost implications of using steel rebars in construction?: The cost implications of using steel rebars in construction can vary depending on several factors. Firstly, the cost of steel rebars themselves will have an impact on the overall construction budget. The price of steel rebars can fluctuate due to factors such as global demand, availability of raw materials, and market conditions. Therefore, the cost of steel rebars can differ from one project to another. Secondly, the quantity of steel rebars required for a construction project will also affect the cost implications. The size, complexity, and load-bearing requirements of the structure will determine the amount of steel rebars needed. As a result, larger and more intricate projects will require a higher quantity of steel rebars, which can increase the overall construction costs. Moreover, the installation and labor costs associated with steel rebars should be considered. Experienced and skilled labor is required to properly install and secure the rebars in place, ensuring structural integrity. The cost of labor can vary depending on the location, availability of skilled workers, and project timeline. Additionally, the equipment and tools necessary for handling and cutting steel rebars may incur additional expenses. Furthermore, the longevity and durability of steel rebars can have long-term cost implications. Steel is known for its strength, resistance to corrosion, and ability to withstand harsh environmental conditions. By using steel rebars, structures can have a longer lifespan and require less maintenance and repairs over time. This can result in significant cost savings in terms of maintenance and replacement expenses. However, it is also important to consider potential cost implications related to sustainability and environmental impact. The production of steel rebars requires substantial energy and resources, which can contribute to carbon emissions and environmental degradation. In some cases, alternative construction materials or methods may be more cost-effective in terms of sustainability and long-term environmental considerations. In summary, the cost implications of using steel rebars in construction depend on factors such as the price of steel, quantity required, labor costs, installation expenses, and long-term durability. While steel rebars offer numerous benefits in terms of strength and longevity, it is crucial to consider the project's specific requirements and balance them with potential economic and sustainability considerations.

Q:How do steel rebars prevent concrete structures from collapsing?: Reinforcement and strength are provided to concrete structures by steel rebars, which prevent their collapse. Concrete is capable of withstanding forces that compress or squeeze it, making it a strong material. However, it is not able to withstand forces that pull it apart, resulting in weakness in tension. When subjected to tension, concrete may crack and ultimately fail. To counteract these tensile forces and offer additional strength, reinforcement bars, also known as steel rebars, are typically embedded within concrete structures. These rebars are made of high-strength steel and are strategically placed to resist the pulling forces. When external forces, such as wind or seismic activity, impact a concrete structure, the rebars assist in distributing the load and resisting tension. As the concrete attempts to separate, the rebars hold it together, preventing the propagation of cracks and maintaining the structure's integrity. Additionally, the rebars enhance the overall durability and lifespan of the concrete structure. By reinforcing the concrete, they mitigate the effects of shrinkage and thermal expansion, which can lead to cracks over time. Consequently, a more stable and resilient structure is achieved, capable of withstanding various environmental and structural stresses. In conclusion, steel rebars are crucial in averting the collapse of concrete structures, as they provide the necessary reinforcement and strength to resist tension. They elevate the structural integrity, durability, and safety of concrete structures, ensuring their ability to withstand demands and fulfill their intended purpose for extended periods.

Q:What is the effect of carbonation on steel rebars?: The effect of carbonation on steel rebars is primarily detrimental. Carbonation refers to the process in which carbon dioxide from the atmosphere reacts with the alkaline compounds in concrete, lowering its pH level. This reduction in pH causes a gradual decrease in the passivation layer of steel rebars, which is a protective layer that prevents corrosion. When the passivation layer is compromised due to carbonation, the steel rebars become more susceptible to corrosion. Carbon dioxide reacts with moisture in the concrete, producing carbonic acid, which further lowers the pH level and accelerates the corrosion process. As corrosion progresses, the steel rebars can lose their structural integrity, compromising the overall strength and durability of the concrete structure. The expansion of corrosion products can also exert pressure on the surrounding concrete, leading to cracking and spalling. This can expose the steel rebars to more moisture and oxygen, exacerbating the corrosion process. Furthermore, carbonation can also reduce the effectiveness of any protective coatings applied on the rebars, making them even more vulnerable to corrosion. To mitigate the effects of carbonation on steel rebars, several preventive measures can be taken. These include using concrete with a lower permeability to carbon dioxide, ensuring proper concrete cover thickness, and using corrosion-resistant steel with a higher level of chromium and/or other alloying elements. Regular monitoring and maintenance of the concrete structures are also essential to detect and address any signs of corrosion at an early stage. In summary, carbonation can have a detrimental effect on steel rebars by compromising the passivation layer, leading to corrosion and weakening of the structure. Therefore, it is crucial to implement preventive measures and regular maintenance to ensure the long-term durability and safety of steel-reinforced concrete structures.

Q:Can steel rebars be used in high-strength concrete?: Yes, steel rebars can be used in high-strength concrete. In fact, they are commonly used as reinforcement in high-strength concrete structures to enhance the overall strength and durability of the concrete.

Q:What is the process of reinforcing concrete walls with steel rebars?: The process of reinforcing concrete walls with steel rebars involves several steps. First, the design and placement of rebars are determined based on the structural requirements. Then, the concrete wall is prepared by cleaning and ensuring a strong bond with the rebars. Next, the rebars are cut and bent according to the specified dimensions and patterns. These rebars are then placed in the desired positions within the formwork, ensuring proper spacing and alignment. Once the rebars are in place, the concrete is poured, encapsulating the rebars and forming a solid structure. The concrete is allowed to cure and harden, creating a reinforced concrete wall that is stronger and more resistant to cracking or structural failure.

Q:Can steel rebars be used in foundation reinforcement?: Yes, steel rebars can be used in foundation reinforcement. They are commonly used to provide strength and stability to concrete foundations by adding reinforcement and preventing cracks or structural failures.

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