High quality deformed bars with grade HRB400

High quality deformed bars with grade HRB400 System 1

High quality deformed bars with grade HRB400

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 25 m.t.

Supply Capability:: 100000 m.t./month

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Product Description:

Specifications of HRB400 Deformed Steel Bar:

Standard	GB	HRB400
Diameter	10mm-32mm

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

Chemical Composition: (Please kindly find our chemistry of our material based on HRB400 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)
18	254.5	2.00	24
20	314.2	2.47	29.64
22	380.1	2.98	35.76

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

High quality deformed bars with grade HRB400

*If you would like to get our price, please inform us the size, standard/material and quantity. Thank you very much for your attention.

Q:Is the tie bar used for the longitudinal joint of cement concrete pavement threaded or smooth? Where is the dowel bar for the transverse joint construction?: Longitudinal tie rod. Longitudinal seam usually has longitudinal contraction joint and longitudinal construction joint two kinds, two kinds of longitudinal joints should be provided with tie rod. The bar shall be designed with the length of the threaded steel to ensure the bond between it and the concrete, and the diameter and spacing of the tie rod shall also be guaranteed. Thus, the tie rod can not provide enough tensile force, and when the concrete faceplate is contracted, the longitudinal joint is pulled apart to form a crack.

Q:Can steel rebars be used in dams and reservoirs?: Yes, steel rebars can be used in dams and reservoirs. Steel rebars are commonly used in the construction of dams and reservoirs to provide structural reinforcement and strength to the concrete structures. The rebars are embedded within the concrete to enhance its tensile strength and prevent cracks or failure.

Q:What are the guidelines for repairing or replacing corroded steel rebars in existing structures?: The guidelines for repairing or replacing corroded steel rebars in existing structures vary depending on the severity of the corrosion and the specific requirements of the project. However, there are some general guidelines that can be followed: 1. Assessment: Before proceeding with any repairs or replacements, a thorough assessment of the corrosion damage should be conducted. This may involve visual inspections, non-destructive testing, or even laboratory analysis of samples taken from the rebars. 2. Safety: Safety should always be the top priority when working with corroded rebars. Adequate precautions should be taken to ensure the safety of workers and surrounding areas. This may include the use of personal protective equipment and ensuring a stable work environment. 3. Determine the extent of corrosion: It is important to determine the extent of corrosion and whether it has affected the structural integrity of the rebars. This can help in deciding whether repair or replacement is necessary. 4. Repair methods: Depending on the severity of corrosion, various repair methods can be employed. These may include removing the corroded portion of the rebar and applying a corrosion inhibitor or protective coating, or using electrochemical techniques such as cathodic protection to prevent further corrosion. 5. Replacement: If the corrosion damage is extensive and repair is not feasible, the corroded rebars may need to be replaced. The replacement rebars should be of the same or higher grade and should be properly anchored to maintain the structural integrity of the existing structure. 6. Design considerations: When repairing or replacing corroded rebars, it is important to consider the design requirements of the structure. The repaired or replaced rebars should meet the necessary load-bearing capacity and should be properly integrated into the existing structure. 7. Quality control: Throughout the repair or replacement process, rigorous quality control measures should be implemented 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 tailored 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:Can steel rebars be used in the construction of underground parking facilities?: Yes, steel rebars can be used in the construction of underground parking facilities. Steel rebars are commonly used in reinforced concrete structures, including underground parking facilities, to provide the necessary strength and structural support. The use of steel rebars helps to enhance the durability and load-bearing capacity of the structure, making it suitable for underground parking facilities that require strong foundations and resistance to potential structural stresses.

Q:How do steel rebars impact the overall flexibility of a structure?: Steel rebars, also referred to as reinforcing bars, play a crucial role in enhancing the overall flexibility of a structure. These bars are typically utilized in reinforced concrete structures to bolster tensile strength and enhance the structural integrity of the building. The integration of steel rebars in concrete significantly augments the flexibility of a structure. Concrete itself possesses strength in compression but weakness in tension. By incorporating rebars, the structure becomes more adept at withstanding tensile forces and resisting bending or deformation caused by external loads or environmental factors. The rebars function as reinforcement by assimilating and dispersing tensile forces throughout the structure, aiding in the prevention of cracks and ensuring a more uniform distribution of stress. This is particularly vital in regions prone to seismic activity or high wind loads, where structures must possess the ability to flex and absorb the energy exerted upon them. Furthermore, the presence of steel rebars also permits the creation of thinner and lighter concrete sections. This contributes to the overall flexibility of the structure by reducing the dead load, rendering it more responsive and adaptable to diverse conditions. In summary, steel rebars have a significant impact on the overall flexibility of a structure by furnishing tensile strength, averting cracks, distributing stress, and enabling the implementation of lighter and thinner concrete sections. By enhancing the structural integrity and resilience, the inclusion of rebars ensures that the building can withstand external forces while preserving its stability and flexibility, ultimately contributing to its longevity and safety.

Q:What are the design considerations for using steel rebars in construction?: Some important design considerations for using steel rebars in construction include the required strength and load-bearing capacity, corrosion resistance, compatibility with other construction materials, durability, and ease of installation. Steel rebars should be chosen based on their appropriate diameter, grade, and spacing to ensure structural integrity and safety. Additionally, proper detailing and placement of rebars are essential to ensure that they are effectively embedded within concrete and can withstand the anticipated stresses and forces during construction and throughout the lifespan of the structure.

Q:What is the effect of steel rebars on the durability of concrete structures?: The durability of concrete structures is greatly influenced by the presence of steel rebars. When used as reinforcement within the concrete, rebars bolster the strength and longevity of the structure. While concrete itself is strong when compressed, it lacks tensile strength. However, by incorporating steel rebars, which possess high tensile strength, into the concrete, the overall structural integrity is significantly improved. The inclusion of rebars in concrete serves to mitigate the potential for cracking and structural failure. When exposed to external forces or natural phenomena such as earthquakes or temperature fluctuations, the rebars distribute the load and aid in resisting bending, shearing, and tension forces. This effectively prevents the occurrence of cracks and ensures the concrete structure remains whole and stable. Furthermore, steel rebars also provide protection against corrosion for the concrete. Concrete is susceptible to moisture and chemicals that can penetrate its surface and lead to the corrosion of embedded reinforcement. However, rebars act as a barrier, safeguarding the concrete from moisture and harmful substances that could cause corrosion. This extends the lifespan of the structure and reduces the need for maintenance and repairs. In conclusion, the addition of steel rebars in concrete structures greatly enhances their durability. They offer increased strength, resistance to external forces, and protection against corrosion. When combined, concrete and steel rebars create a robust and long-lasting structure capable of withstanding various environmental and structural challenges.

Q:What is the purpose of using steel rebars in concrete structures?: The purpose of using steel rebars in concrete structures is to enhance the overall strength and durability of the structure. Concrete, while excellent in compression, is weak in tension. By incorporating steel rebars into the concrete, the structure is able to resist tensile forces and prevent cracking or failure. Steel rebars, which are typically made of carbon steel, are strong and have high tensile strength. They are placed within the concrete forms before pouring, creating a reinforced concrete structure. When subjected to tensile forces, the concrete transfers the load to the steel rebars, which can resist the pulling or stretching forces. This reinforcement helps to distribute the load more evenly, preventing localized stress points and reducing the risk of structural failure. In addition to providing tensile strength, steel rebars also help to control cracks in concrete structures. As concrete shrinks and expands due to temperature changes or drying, it is susceptible to cracking. The presence of steel rebars helps to limit the width and extent of these cracks, ensuring the structural integrity and longevity of the concrete. Furthermore, steel rebars can improve the resistance of concrete structures to seismic activity or other dynamic forces. The flexible nature of steel rebars allows them to absorb and dissipate energy during earthquakes or other vibrations, reducing the risk of collapse. Overall, the purpose of using steel rebars in concrete structures is to reinforce and strengthen the concrete, providing additional tensile strength, controlling cracks, and enhancing the overall durability and resilience of the structure.

Q:What is the thermal expansion coefficient of steel rebars?: The thermal expansion coefficient of steel rebars refers to the rate at which the rebars expand or contract with changes in temperature. Steel is known to have a relatively low thermal expansion coefficient, typically around 12 x 10^-6 per degree Celsius. This means that for every degree increase in temperature, the length of the steel rebar will increase by approximately 0.000012 times its original length. It is important to consider the thermal expansion coefficient of steel rebars in construction projects to prevent potential issues such as structural instability and cracking due to temperature variations.

Q:Can steel rebars be used in parking garage construction?: Yes, steel rebars can be used in parking garage construction. Steel rebars are commonly used in reinforced concrete structures, including parking garages, to provide additional strength and durability. Rebars help to distribute the load and enhance the structural integrity of the concrete, making it capable of withstanding heavy loads, such as those encountered in parking garages. The use of steel rebars in parking garage construction is essential for ensuring the longevity and safety of the structure.

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