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 the construction of offshore oil platforms?: Yes, steel rebars can be used in the construction of offshore oil platforms. Steel rebars provide structural reinforcement and enhance the strength and stability of the platform's concrete foundation. They are commonly used in various offshore structures due to their high tensile strength, durability, and resistance to corrosion in marine environments. Additionally, steel rebars can be designed to meet specific engineering requirements and contribute to the overall safety and longevity of the offshore oil platform.

Q: Can steel rebars be used in thin concrete elements?: Yes, steel rebars can be used in thin concrete elements. However, it is important to ensure that the rebars are properly spaced and adequately covered with concrete to provide sufficient strength and durability to the structure. Additionally, the design and placement of rebars should be carried out in accordance with the specific requirements and recommendations of the construction codes and standards.

Q: Are there any limitations on the use of steel rebars in flexural members?: Yes, there are some limitations on the use of steel rebars in flexural members. These limitations include factors such as the size and shape of the rebars, the spacing between them, and the quality of the steel used. Additionally, the design and construction codes and standards set specific guidelines for the use of rebars in flexural members to ensure structural integrity and safety.

Q: How do steel rebars affect the crack width in reinforced concrete?: Steel rebars play a crucial role in controlling and minimizing the crack width in reinforced concrete structures. The primary function of steel rebars is to provide tensile strength to the concrete, as concrete alone is weak in tension. When a load is applied to the reinforced concrete, the steel rebars resist the tensile forces, preventing cracks from widening. The presence of steel rebars helps distribute the stress and strain more evenly throughout the concrete. As a result, the cracks that may occur due to external loads or shrinkage are confined and their width is limited. The rebars act as reinforcement, inhibiting the propagation of cracks and reducing their width. This is especially important in structural elements such as beams and columns, where crack control is critical for maintaining the integrity and durability of the structure. The diameter, spacing, and arrangement of the rebars also influence the crack width in reinforced concrete. Properly designed and placed rebars provide optimal crack control. As the diameter and spacing of the rebars decrease, the crack width decreases as well. Additionally, the arrangement of rebars in a specific pattern, such as using a mesh or a grid, can further enhance crack control by providing additional resistance to crack propagation. Moreover, the bond between steel rebars and concrete is essential in crack width control. Adequate bond strength ensures that the rebars effectively transfer stress to the concrete, limiting crack width. Insufficient bond can lead to slip between the steel rebars and the concrete, allowing cracks to widen. In summary, steel rebars significantly affect crack width in reinforced concrete by providing tensile strength, distributing stress and strain, confining cracks, and enhancing the bond between the steel and concrete. Proper design, placement, and arrangement of rebars are crucial for effective crack control, improving the overall performance and longevity of reinforced concrete structures.

Q: What is the difference between steel rebars and steel mesh?: Steel rebars and steel mesh are both widely used in construction as reinforcement materials, but they differ in their shape and application. Rebars are long, cylindrical bars that are typically used to reinforce concrete structures, such as beams, columns, and slabs. They are placed in a grid-like pattern and provide tensile strength to the concrete, preventing it from cracking under pressure. On the other hand, steel mesh consists of interconnected wires that form a grid or sheet-like pattern. It is commonly used in applications such as concrete pavements, sidewalks, and walls. Steel mesh provides both tensile and shear strength to the concrete, distributing the load more evenly and reducing the risk of cracking. In summary, rebars are used for localized reinforcement in specific areas, while mesh provides overall reinforcement across larger surfaces.

Q: Can steel rebars be used in aggressive chemical environments?: Steel rebars can be used in aggressive chemical environments to some extent. However, their performance may be compromised depending on the severity and nature of the chemicals present. Steel rebars are generally resistant to mild to moderate chemical exposures, such as those found in most construction applications. However, in highly aggressive chemical environments, where exposure to corrosive substances like acids, alkalis, or salts is prolonged and intense, steel rebars may corrode and deteriorate over time. In such cases, alternative materials like stainless steel rebars or epoxy-coated rebars may be more suitable, as they provide enhanced resistance to corrosion in aggressive chemical environments. It is important to consider the specific conditions of the chemical environment and consult with experts or structural engineers to determine the most appropriate rebar material for the given situation. Regular inspections and maintenance should also be conducted to monitor the condition of steel rebars and ensure their longevity in aggressive chemical environments.

Q: Are steel rebars suitable for use in structures with high resistance to impact?: Structures with high resistance to impact can generally make use of steel rebars. These rebars, also known as reinforcement bars, are made from steel and are commonly utilized in concrete structures to enhance their strength and durability. Steel possesses high tensile strength and the ability to absorb and distribute impact forces, making it an excellent material for reinforcement. In situations where impact is a concern, like in bridges, highways, or buildings located in earthquake-prone areas, steel rebars perform a critical function by providing additional strength and resistance. By incorporating rebars, the structure becomes capable of withstanding sudden impact loads and preventing catastrophic failures. Furthermore, engineers have the option to choose from various grades and sizes of steel rebars, ensuring that the appropriate type is selected based on the specific requirements of the structure. Higher grade rebars, such as Grade 60 or Grade 75, offer increased strength and ductility, making them particularly suitable for structures with high resistance to impact. It is worth noting that while steel rebars enhance the overall strength and impact resistance of a structure, other factors such as design, construction techniques, and maintenance also play significant roles in ensuring the structure's ability to withstand impact forces. Therefore, taking a comprehensive approach that encompasses all these factors is crucial when designing and constructing structures with high resistance to impact.

Q: 16 meters of thread steel, how many meters?: Steel is known as hot rolled ribbed bar. Ordinary hot rolled steel bars are made up of HRB and the minimum yield point of the brand. H, R, and B are the first letters in English for hot-rolled (Hotrolled), ribbed (Ribbed) and reinforced (Bars) three words.

Q: What is the recommended diameter of steel rebars for column reinforcement?: The recommended diameter of steel rebars for column reinforcement can vary depending on factors such as the column's dimensions, load requirements, and local building codes. Generally, rebars with diameters ranging from 10mm to 32mm are commonly used for column reinforcement. It is advisable to consult with a structural engineer or refer to local building codes to determine the specific recommended diameter for a particular column.

Q: How do steel rebars contribute to the overall energy efficiency of a building?: There are multiple ways in which steel rebars contribute to the energy efficiency of a building. Firstly, they are commonly utilized in reinforced concrete structures, which offer excellent thermal mass properties. Thermal mass refers to a material's capacity to absorb, store, and release heat energy. By incorporating steel rebars into concrete walls, floors, and ceilings, the building can effectively regulate interior temperature, thereby reducing the need for additional heating or cooling systems. Furthermore, steel rebars enhance a building's structural integrity and durability, thereby contributing to energy efficiency. Buildings constructed with reinforced concrete using steel rebars are better equipped to withstand external forces like wind or seismic activities. This increased resilience results in reduced maintenance requirements and a longer lifespan, ultimately saving energy and resources over time. Moreover, steel rebars are recyclable materials, meaning they can be processed and reused at the end of their life cycle. The recycling of steel rebars significantly reduces energy consumption and greenhouse gas emissions associated with the production of new steel. By incorporating recycled steel rebars, builders can further improve the energy efficiency of a building and contribute to sustainable construction practices. In conclusion, steel rebars play a critical role in enhancing the overall energy efficiency of a building. Their ability to provide thermal mass, improve structural integrity, and be recycled make them a sustainable and energy-efficient choice for construction projects.

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