Hot rolled high quality deformed bar ASTM A615 GR40

Hot rolled high quality deformed bar ASTM A615 GR40 System 1

Hot rolled high quality deformed bar ASTM A615 GR40

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Loading Port:: Qingdao

Payment Terms:: TT OR LC

Min Order Qty:: 25 m.t.

Supply Capability:: 20000000 m.t./month

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Deformed Bar Details：

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

Steel Rebar / Deformed Bar / Reinforcing Bar

Q: What are the factors to consider when choosing steel rebars for a project?: In order to choose steel rebars for a project, there are several important factors that need to be taken into consideration. Firstly, the strength and durability of the rebars are determined by their grade of steel. It is crucial to select a grade that is suitable for the specific project requirements and structural design. Higher grades of steel rebars offer better resistance to corrosion and have higher tensile strength. The size and shape of the rebars should be chosen based on the structural design and load requirements. Different projects may necessitate different diameters and lengths of rebars. The specific dimensions and spacing requirements need to be considered in order to ensure optimal reinforcement. Depending on the project's location and exposure to environmental conditions, it is essential to select rebars with appropriate corrosion resistance. This can be achieved by using rebars with protective coatings, such as epoxy or galvanized coatings, or by opting for stainless steel rebars. If welding is required for the project, it is important to take into account the rebars' weldability. Some rebars may require special procedures or preheating before welding, while others may not be suitable for welding at all. The cost of steel rebars can vary based on grade, size, and other factors. It is important to find a balance between the project's budget and the required quality and strength of the rebars. Additionally, considering the rebars' lifecycle cost, including maintenance and potential repairs, can help make a more economical choice. The availability of the required rebars in the local market should also be considered. It is important to ensure that the desired grade, size, and quantity of rebars are readily available in order to avoid delays in the project. Steel rebars should meet the relevant national or international standards, such as ASTM or BS, in order to ensure their quality and performance. Compliance with these standards guarantees that the rebars have been manufactured and tested to meet specific requirements. Seeking expert advice from structural engineers or experts in steel reinforcement can provide valuable insights and recommendations. They can assess the project's needs and offer guidance on the most suitable rebars for the specific application. By taking into account these factors, the selection of appropriate steel rebars that meet the project's requirements in terms of strength, durability, corrosion resistance, and cost-effectiveness can be ensured.

Q: Can steel rebars be used in dams and reservoirs construction?: Steel rebars are a commonly utilized material in the construction of dams and reservoirs. This is due to their remarkable tensile strength and durability, which are crucial qualities for concrete construction projects. Given the immense pressure exerted by water in dams and reservoirs, it is essential to use materials that can withstand such forces. Steel rebars serve as reinforcement, ensuring the structural integrity of the concrete. They are typically embedded within the concrete to provide additional strength and prevent cracking or collapse. Another advantage of steel rebars is their resistance to corrosion, which is particularly important in dam and reservoir construction, as these structures are often exposed to water for extended periods. In conclusion, steel rebars play a vital role in enhancing the strength and longevity of dams and reservoirs.

Q: What is the role of steel rebars in reducing concrete creep?: Steel rebars play a crucial role in reducing concrete creep. Concrete creep refers to the gradual deformation or movement of concrete over time under sustained loading. This phenomenon occurs due to the long-term effects of stress and environmental factors on the concrete structure. By incorporating steel rebars into concrete structures, the creep behavior of concrete is significantly reduced. Steel rebars are high-strength reinforcement bars that are embedded within the concrete to enhance its structural integrity and durability. They provide tensile strength to counteract the tensile stresses that can cause concrete to creep. When concrete is subjected to sustained loads, such as the weight of a building or a bridge, it experiences internal stresses that can lead to creep. However, the presence of steel rebars helps to distribute these stresses more evenly throughout the structure. The rebars act as a reinforcement, absorbing and redistributing the tensile forces, thus minimizing the deformation of the concrete. Additionally, steel rebars also improve the bond between concrete and the reinforcement. This bond is essential for transferring the tensile forces from the concrete to the rebars and ensuring that they work together as a composite material. The strong bond between concrete and rebars prevents the formation of cracks, which can further contribute to creep. Furthermore, steel rebars also enhance the overall stiffness and rigidity of the concrete structure. This increased stiffness helps to resist the deformation caused by creep, maintaining the integrity and stability of the structure over time. In summary, the role of steel rebars in reducing concrete creep is vital. They provide tensile strength, distribute internal stresses, improve the bond between concrete and reinforcement, and enhance the overall stiffness of the structure. By incorporating steel rebars, engineers can effectively mitigate the effects of creep and ensure the long-term performance and durability of concrete structures.

Q: Are there any standards or specifications for steel rebars?: Yes, there are several standards and specifications for steel rebars. The most commonly used standards worldwide include the ASTM A615/A615M and ASTM A706/A706M in the United States, BS 4449:2005 in the United Kingdom, and JIS G3112 in Japan. These standards outline the mechanical properties, dimensions, and quality requirements for steel rebars used in construction projects.

Q: Can steel rebars be used in structures with high resistance to earthquakes?: Structures with high resistance to earthquakes can make use of steel rebars. These rebars are commonly incorporated in reinforced concrete structures to enhance strength and durability. In areas prone to earthquakes, it is crucial to design and construct buildings capable of withstanding seismic forces. Properly incorporating steel rebars into the structural design can contribute to improving the overall seismic performance of a building. In earthquake-resistant structures, steel rebars offer several advantages. Firstly, they increase the tensile strength of concrete, which is typically weak in tension. This reinforcement helps prevent cracking and failure of the concrete during seismic events. Additionally, steel rebars improve the ductility of the structure, allowing it to absorb and dissipate energy during earthquakes. This ductile behavior helps minimize structural damage and ensures the building remains stable and safe. Moreover, steel rebars can be combined with other seismic design techniques to enhance the overall performance of the structure. For instance, they can be used in conjunction with specialized concrete mixes like high-strength or fiber-reinforced concrete to further improve seismic resistance. Advanced structural systems such as moment frames or shear walls can also be integrated with steel rebars to provide even greater earthquake resistance. However, it is important to note that the earthquake resistance of a structure does not solely depend on the use of steel rebars. Proper design, construction techniques, and adherence to seismic building codes are equally crucial factors. Engineers must consider various aspects, including the building's location, soil conditions, and anticipated seismic loads, to ensure the structural integrity and safety of the building. In conclusion, steel rebars can effectively enhance the earthquake resistance of structures. By incorporating them into reinforced concrete structures, the tensile strength and ductility are improved, enabling the building to withstand seismic forces. Nevertheless, it is essential to implement comprehensive seismic design strategies and adhere to building codes to ensure the overall safety and performance of the structure.

Q: What is the minimum cover for steel rebars in concrete?: The minimum cover for steel rebars in concrete is typically specified by building codes and can vary depending on the specific application and environmental conditions. However, a common minimum cover requirement is usually around 1.5 inches (38 mm) for rebars in reinforced concrete structures.

Q: What does "4esg25" mean on thread steel?: The brand of steel is expressed in terms of Arabia numerals or Arabia numerals plus English letters. HRB335, HRB400 and HRB500 are represented by 3, 4 and 5, respectively. HRBF335, HRBF400 and HRBF500 are represented by C3, C4 and C5 respectively. The name of the factory is expressed in Chinese phonetic prefix. Nominal diameter mm Arabia digital representation.

Q: Can steel rebars be used in the construction of railway or subway systems?: Yes, steel rebars can be used in the construction of railway or subway systems. Steel rebars, also known as reinforcement bars, are commonly used in construction projects to provide strength and durability to concrete structures. In the case of railway or subway systems, steel rebars are often used to reinforce the concrete foundations, pillars, beams, and other structural components of the infrastructure. The use of steel rebars helps to enhance the structural integrity and load-bearing capacity of the railway or subway system, ensuring its safety and longevity. Additionally, steel rebars are also corrosion-resistant, which is crucial in environments where there may be exposure to moisture or chemicals. Therefore, steel rebars are a reliable and commonly used material in the construction of railway or subway systems.

Q: What is the impact of steel rebars on the overall sustainability of a building?: The overall sustainability of a building is greatly influenced by steel rebars, which have various implications for the environment, economy, and society. Firstly, the use of steel rebars strengthens and prolongs the lifespan of a structure, reducing the need for repairs and renovations and minimizing resource consumption and waste. In terms of environmental impact, steel rebars can be recycled, decreasing the demand for new steel production and the carbon emissions associated with it. Recycling steel rebars also saves energy and reduces the extraction of raw materials like iron ore and coal. Additionally, steel rebars can be salvaged and repurposed in other construction projects, further extending their usefulness and reducing waste. From an economic perspective, incorporating steel rebars can result in cost savings in construction and maintenance. Steel is a versatile and strong material, allowing for lighter and more efficient designs, leading to reduced material and labor costs. Moreover, the recyclability and salvagability of steel rebars can provide economic benefits through resale or repurposing. Furthermore, steel rebars play a crucial role in ensuring the safety and structural integrity of buildings, particularly in areas prone to earthquakes or high winds. By reinforcing concrete, steel rebars enhance a building's resistance to external forces, reducing the risk of collapse or damage during natural disasters. This aspect of safety is vital for the well-being of occupants and the community as a whole. In conclusion, steel rebars have a positive impact on the overall sustainability of a building, contributing to durability, reducing environmental impacts through recycling and reuse, offering economic benefits, and enhancing structural safety. The incorporation of steel rebars in construction projects can significantly improve the long-term sustainability and resilience of buildings.

Q: How do steel rebars help in reducing construction time?: Steel rebars contribute to the reduction of construction time in several ways. Firstly, they enhance the strength and durability of concrete structures, enabling builders to employ quicker construction techniques. This obviates the necessity for slower and more time-consuming methods as the rebars provide sufficient support for the structure's weight. Secondly, the reinforcement of concrete with steel rebars enhances the overall structural integrity of the building. Consequently, builders can employ thinner concrete sections without compromising the structure's strength. These thinner sections require less material and can be poured and cured more rapidly and easily, thus saving construction time. Thirdly, the installation of steel rebars is a speedy process due to their easy handling and installation characteristics. They can be conveniently cut and bent to fit the desired shape and size, facilitating efficient installation. Consequently, the requirement for complicated and time-consuming formwork is eliminated, resulting in a reduction in construction time. Fourthly, steel rebars offer design and construction flexibility, enabling the utilization of innovative and efficient building techniques. They can be utilized in a variety of applications, including beams, columns, and slabs, granting architects and engineers the freedom to design structures that can be rapidly and efficiently constructed. Lastly, steel rebars provide additional resistance to natural disasters such as seismic activity and extreme weather conditions. By reinforcing concrete with rebars, structures become more resilient, reducing the risk of damage and expediting the construction process. This is particularly crucial in areas that are prone to earthquakes or adverse weather conditions. In conclusion, steel rebars play a pivotal role in reducing construction time by providing strength, durability, flexibility, ease of installation, and the ability to reinforce concrete structures. These qualities facilitate faster construction methods and efficient use of materials.

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