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:What are the common challenges faced during the installation of steel rebars?: Some common challenges faced during the installation of steel rebars include ensuring proper placement and alignment, dealing with the weight and size of the rebars, avoiding damage to the rebars during handling and transportation, ensuring adequate anchorage and spacing, and coordinating with other construction activities to avoid conflicts.

Q:What is the impact of steel rebars on the carbon footprint of a building?: The carbon footprint of a building is greatly influenced by steel rebars, which are manufactured through a process that involves extracting raw materials like iron ore and then smelting and refining them into steel. This production phase alone results in greenhouse gas emissions and consumes a significant amount of energy. Furthermore, the transportation and construction of steel rebars also contribute to the building's carbon footprint. Fossil fuels are used for transportation, releasing carbon dioxide into the atmosphere. Moreover, the construction phase relies on heavy machinery and equipment that further adds to carbon emissions because of their dependence on fossil fuels. The carbon footprint of steel rebars extends beyond the construction phase as well. While steel is highly durable and can last for many years, it requires maintenance and may need to be replaced over time. These activities, such as repairs or demolitions, result in additional carbon emissions due to transportation, energy consumption, and waste management. However, it is important to acknowledge that steel rebars can offer environmental benefits when used in high-performance buildings or sustainable construction practices. For example, steel is recyclable, and reusing steel rebars can significantly reduce the carbon footprint associated with their production. Additionally, steel rebars provide structural strength, enabling the construction of taller and more efficient buildings that can potentially reduce long-term energy consumption. To minimize the carbon footprint of a building, it is crucial to consider alternative materials like recycled steel or other low-carbon materials during the construction process. Additionally, implementing energy-efficient practices throughout the building's lifecycle, including reducing energy consumption and improving waste management, can further mitigate the environmental impact of steel rebars.

Q:How are steel rebars used in elevator shafts?: Steel rebars are used in elevator shafts to reinforce the concrete structure and provide strength and stability. They are embedded within the concrete walls to prevent cracking or collapsing, ensuring the safety and durability of the elevator shaft.

Q:What is the role of steel rebars in preventing structural collapse?: The prevention of structural collapse is a crucial role played by steel rebars, as they reinforce concrete structures. While concrete is strong in compression, it lacks strength in tension. This is where steel rebars come into play, effectively enhancing the tensile strength of the concrete. When a building or any concrete structure is subjected to structural loads, the rebars distribute the load across a wider area. This prevents the concrete from cracking and failing under stress. By providing a means for the concrete to resist tension and bending forces, steel rebars help maintain the integrity and stability of the structure. In addition to improving tensile strength, rebars also increase the overall ductility and flexibility of the concrete. This is especially important during events like earthquakes or high winds, as structures must withstand significant lateral forces. The presence of rebars allows the concrete to absorb and dissipate these forces, reducing the risk of structural failure. Furthermore, steel rebars play a role in preventing structural collapse by resisting the effects of corrosion. When embedded in concrete, the rebars are shielded from moisture and other corrosive elements. This ensures their long-term durability and ability to support the structure. To summarize, steel rebars are essential components in preventing structural collapse. They reinforce concrete structures, enhance tensile strength, improve ductility, resist corrosion, and ultimately contribute to the overall safety and stability of buildings and other concrete constructions.

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:How do steel rebars perform in blast-resistant structures?: Steel rebars perform well in blast-resistant structures due to their high tensile strength and ductility. They can effectively absorb and distribute the impact energy during a blast, helping to minimize structural damage and protect the overall integrity of the building. Additionally, rebars can be designed and placed strategically to enhance the blast resistance of the structure, making them an essential component in ensuring the safety and resilience of such buildings.

Q:How do steel rebars comply with building codes and regulations?: Steel rebars are able to comply with building codes and regulations by meeting specific requirements outlined for their use in construction projects. The purpose of these codes and regulations is to guarantee the safety, durability, and structural integrity of buildings. Below are several ways in which steel rebars adhere to these codes and regulations: 1. Material Standards: The building codes dictate certain material standards that steel rebars must adhere to. These standards outline the permitted type, grade, and quality of steel for construction purposes. For instance, the American Society for Testing and Materials (ASTM) has established standards such as ASTM A615, which provides requirements for deformed and plain carbon-steel bars. 2. Size and Shape: Building codes specify the dimensions and shape of rebars to be utilized in different structural components like beams, columns, and slabs. Steel rebars must meet these size and shape requirements to ensure proper fit and structural integrity. 3. Placement and Spacing: Building codes govern the appropriate placement and spacing of rebars within concrete structures. These codes specify the minimum and maximum distances between rebars, as well as the required cover (distance from the concrete surface). Adhering to these regulations enhances the strength and durability of the structure. 4. Welding and Connection: In cases where welding or connecting rebars is necessary, building codes provide guidelines on the proper welding techniques and requirements. These regulations ensure that the welded or connected rebars offer the necessary strength and stability to the structure. 5. Testing and Certification: Steel rebars must undergo various tests to ensure compliance with building codes and regulations. These tests include tensile strength, yield strength, elongation, and bending tests. Products that pass these tests are certified as compliant and can be utilized in construction projects. By adhering to these building codes and regulations, steel rebars contribute to the overall safety and integrity of the structures in which they are used. Compliance ensures that the rebars meet the necessary standards and effectively fulfill their intended function.

Q:Are steel rebars suitable for use in earthquake-prone regions?: Steel rebars are a suitable option for use in regions prone to earthquakes. They are commonly utilized in the construction industry to strengthen concrete structures, providing increased resistance against the powerful forces unleashed by earthquakes. The flexibility of steel allows it to effectively absorb and distribute energy during seismic events, thereby minimizing potential damage. In addition, the presence of steel rebars significantly improves the overall structural integrity of buildings, enabling them to withstand seismic activities more effectively. Moreover, steel rebars can be specifically designed and installed to adhere to seismic design codes and standards applicable to earthquake-prone areas, ensuring the safety of the structures. In summary, steel rebars are a dependable and efficient choice for reinforcing buildings in regions susceptible to earthquakes.

Q:What are the guidelines for repairing or replacing corroded steel rebars in existing structures?: The severity of corrosion and project-specific requirements determine the guidelines for repairing or replacing corroded steel rebars in existing structures. However, there are some general guidelines that can be followed: 1. Before proceeding with any repairs or replacements, conduct a thorough assessment of the corrosion damage. This may involve visual inspections, non-destructive testing, or laboratory analysis of samples taken from the rebars. 2. Always prioritize safety when working with corroded rebars. Take adequate precautions to ensure the safety of workers and surrounding areas. This may include using personal protective equipment and creating a stable work environment. 3. Determine the extent of corrosion and its impact on the structural integrity of the rebars. This will help determine whether repair or replacement is necessary. 4. Use various repair methods depending on the severity of corrosion. These methods may include removing the corroded portion of the rebar and applying a corrosion inhibitor or protective coating. Electrochemical techniques such as cathodic protection can also be used to prevent further corrosion. 5. If repair is not feasible due to extensive corrosion damage, consider replacing the corroded rebars. The replacement rebars should be of the same or higher grade and properly anchored to maintain the structural integrity of the existing structure. 6. Consider the design requirements of the structure when repairing or replacing corroded rebars. The repaired or replaced rebars should meet the necessary load-bearing capacity and be properly integrated into the existing structure. 7. Implement rigorous quality control measures throughout the repair or replacement process to ensure the effectiveness and durability of the repairs. This may include regular inspections, testing, and monitoring of the repaired or replaced rebars. It is important to note that these guidelines are general recommendations and should be customized to the specific circumstances and requirements of each project. Therefore, it is advisable to consult with a structural engineer or a professional experienced in repairing corroded steel rebars for a more accurate and detailed guideline.

Q:What are the different methods of joining steel rebars?: There is a range of methods available for joining steel rebars, each with its own set of advantages and disadvantages. Here, we present the most common techniques: 1. Lap Splicing: The most widely used method for joining rebars is lap splicing. It entails overlapping two rebars and securing them together with wire or metal ties. This approach is cost-effective and straightforward, but it necessitates longer lap lengths to achieve the required strength. 2. Mechanical Splicing: Mechanical splicing involves connecting rebars using mechanical couplers or splices. These couplers are specifically designed to establish a strong and dependable connection between the rebars. Mechanical splicing enables quicker installation and reduces the need for lengthy overlaps. However, it may be more costly compared to lap splicing. 3. Welding: Another option for joining steel rebars is welding. This process involves heating the rebars and fusing them together using electric arcs or gas flames. Welding creates a robust and permanent connection, but it requires skilled labor and specialized equipment. It is commonly employed in precast concrete applications. 4. Bolted Connections: Bolted connections utilize bolts and nuts to join the rebars. This method offers a flexible and adjustable connection, making it suitable for certain applications. However, bolted connections necessitate additional hardware and may not be as strong as other methods. 5. Adhesive Bonding: Adhesive bonding involves using epoxy or other adhesives to join rebars. The adhesive is applied to the rebars, and they are pressed together until the adhesive cures and forms a strong bond. Adhesive bonding provides a clean and aesthetically pleasing finish, but it may not offer the same level of strength as other methods and is more suitable for non-structural applications. It is essential to consider factors such as specific project requirements, structural design, and construction techniques when selecting a joining method. Consulting with structural engineers and adhering to industry standards and codes is crucial to ensure the appropriate selection and implementation of the joining method for steel rebars.

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