High quality hot rolled deformed bar 6mm-50mm ASTM ou BS4449

High quality hot rolled deformed bar 6mm-50mm ASTM ou BS4449 System 1

High quality hot rolled deformed bar 6mm-50mm ASTM ou BS4449

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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：

Product Description:

Specifications of HRB400 Deformed Steel Bar:

StandardGBHRB400Diameter6mm,8mm,10mm,12mm,14mm,16mm,18mm,20mm,22mm,25mm,28mm,32mm,36mm,40mm,50mmLength6M, 9M,12M or as requiredPlace of originHebei, China mainlandAdvantagesexact size, regular package, chemical and mechanical properties are stable.TypeHot rolled deformed steel barBrand nameDRAGON

Chemical Composition: (Please kindly find our chemistry of our material based on HRB500 as below for your information)

GradeTechnical data of the original chemical composition (%)CMnSiSPVHRB400≤0.25≤1.60≤0.80≤0.045≤0.0450.04-0.12Physical capabilityYield 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)628.270.2222.664850.270.3954.741078.540.6177.40412113.10.88810.65614153.91.2114.5216201.11.5818.9618254.52.002420314.22.4729.6422380.12.9835.7625490.93.8546.228615.84.8357.9632804.26.3175.723610187.9998.884012579.87118.4450196415.42185.04

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: Are there any specific safety precautions to be taken while handling steel rebars?: There are several safety measures that need to be taken into account when handling steel rebars. Here are some important factors to consider: 1. Personal Protective Equipment (PPE) is essential. It is crucial to wear the appropriate gear, including safety goggles or glasses, gloves, and steel-toed boots. These items will help safeguard against potential eye injuries, cuts, and crushed toes. 2. Proper lifting techniques must be employed when handling rebars. This involves bending at the knees, maintaining a straight back, and utilizing leg muscles to lift the load. Twisting or jerking movements should be avoided to prevent strains or sprains. 3. Rebars should be stored in an organized and secure manner. They should not be leaned against walls or other structures to avoid falling and causing harm. 4. The sharp edges of rebars should be handled with caution. Careful handling is necessary to prevent cuts or punctures. Wearing protective gloves is recommended to minimize the risk of hand injuries. 5. When transporting rebars, it is crucial to ensure they are secured properly. This prevents movement or falling off the vehicle. Appropriate restraints such as ropes or straps should be used to secure the load safely. 6. It is important to be mindful of any overhead power lines or live electrical sources in the working area. Maintaining a safe distance from these sources prevents accidental contact with the rebars, which can conduct electricity. 7. Communication and awareness among workers are key. Constantly communicating with others in the vicinity ensures that everyone is aware of the presence of rebars. This helps prevent accidental injuries caused by tripping or colliding with the rebars. By adhering to these safety precautions, the risk of accidents or injuries while handling steel rebars can be minimized. It is also important to undergo proper training and comply with any specific safety guidelines provided by your employer or industry regulations.

Q: What is the weight of steel rebars per meter or foot?: The weight of steel rebars per meter or foot varies depending on the size and type of rebar being used. Standard steel rebars are typically available in various diameters, ranging from 6mm to 50mm. The weight per meter or foot can be calculated by multiplying the cross-sectional area of the rebar (in square meters or square feet) by the density of steel, which is approximately 7850 kilograms per cubic meter or 0.2836 pounds per cubic inch. To provide a specific example, let's consider a standard 10mm diameter rebar. The cross-sectional area can be calculated using the formula for the area of a circle (πr²), where r is the radius of the rebar (5mm in this case). Assuming a meter as the unit of measurement, the cross-sectional area would be π(0.01m)² = 0.000314 square meters. Multiplying this by the density of steel, we get 0.000314m² * 7850kg/m³ = 2.464 kilograms per meter. Similarly, if we were to calculate the weight in pounds per foot, we would convert the density of steel to pounds per cubic foot (approximately 490 pounds per cubic foot) and multiply the cross-sectional area by this value. It is important to note that weights may vary slightly depending on the specific grade of steel being used, so it is advisable to consult the manufacturer's specifications or a reliable reference for accurate weight calculations.

Q: What is the tensile strength of different grades of steel rebars?: The tensile strength of different grades of steel rebars varies depending on the specific grade. Common grades include Grade 40, Grade 60, and Grade 75. Grade 40 steel rebars typically have a tensile strength of 40,000 pounds per square inch (psi), Grade 60 rebars have a tensile strength of 60,000 psi, and Grade 75 rebars have a tensile strength of 75,000 psi. It is important to consult the specific grade requirements for any construction project to ensure the appropriate strength is used.

Q: What is the minimum concrete strength required for steel rebars?: The minimum concrete strength required for steel rebars typically depends on the specific application and design requirements. However, it is common for construction projects to require a minimum concrete strength of 3,000 pounds per square inch (psi) for standard steel rebars.

Q: Are there any health and safety concerns related to steel rebars?: Yes, there are several health and safety concerns related to steel rebars. Firstly, handling and lifting steel rebars can pose risks of musculoskeletal injuries such as strains, sprains, and back injuries. These rebars are heavy and often require manual handling or the use of heavy machinery, which can increase the risk of accidents and injuries. Secondly, steel rebars are often coated with chemicals to prevent corrosion. These coatings can contain hazardous substances such as toxic metals or volatile organic compounds (VOCs). Exposure to these chemicals through inhaling fumes or direct contact with the skin can lead to health issues, including respiratory problems, skin irritation, and chemical burns. Furthermore, steel rebars are commonly used in construction sites, which can be hazardous environments. Workers may face risks of falling rebars, tripping over them, or being struck by them. Additionally, improper installation or positioning of steel rebars can compromise the structural integrity of the construction, potentially leading to accidents or collapses. To mitigate these health and safety concerns, it is important to provide appropriate training and personal protective equipment (PPE) to workers handling steel rebars. Employers should also enforce proper lifting techniques and safe work practices to prevent musculoskeletal injuries. Adequate ventilation systems and the use of respiratory protection can help in reducing exposure to hazardous chemicals. Lastly, regular inspections and adherence to construction regulations can ensure the proper placement and installation of steel rebars, minimizing the risk of accidents and structural failures.

Q: Can steel rebars be used in foundation structures?: Yes, steel rebars can be used in foundation structures. Steel rebars are commonly used in reinforced concrete foundations to provide strength and structural integrity. They are used to reinforce the concrete and enhance its load-bearing capacity, making it suitable for supporting heavy structures and resisting forces like earthquakes and soil movement.

Q: What is the impact of steel rebars on the overall carbon footprint of a building?: The overall carbon footprint of a building is significantly influenced by the presence of steel rebars. This is because the production of steel involves the consumption of high amounts of energy and the release of substantial greenhouse gas emissions, particularly carbon dioxide. The carbon footprint of a building is further affected by activities such as the extraction and processing of iron ore, as well as the manufacturing and transportation of steel rebars. The extent to which steel rebars are used in a building also plays a role in its carbon footprint. The more steel rebars that are utilized, the higher the carbon footprint will be. The quantity of steel rebars required is determined by factors such as the size and complexity of the structure, as well as specific design requirements. However, it is worth noting that steel rebars are an essential component of reinforced concrete, which is widely used in construction due to its strength and durability. Reinforced concrete ensures the structural integrity and longevity of a building, consequently contributing to its safety. While steel rebars contribute to the building's carbon footprint, they also play a critical role in constructing secure and resilient structures. To mitigate the carbon footprint associated with steel rebars, several strategies can be employed. One approach is to utilize recycled steel rebars, which significantly reduces the energy consumption and emissions associated with steel production. Additionally, optimizing the design and construction process can help minimize the overall amount of steel required, thereby reducing the carbon footprint. Furthermore, alternative materials such as fiber-reinforced polymers (FRPs) are being developed as substitutes for steel rebars. FRPs have lower carbon footprints since they are made from materials like fiberglass or carbon fiber, which have lower emissions during production. However, the use of FRPs is still limited, and further research and development are needed to enhance their viability as a mainstream alternative. In conclusion, the presence of steel rebars has a significant impact on the carbon footprint of a building due to the energy-intensive production process and emissions associated with their extraction, manufacturing, and transportation. Nevertheless, their crucial role in providing structural integrity and durability should not be overlooked. Efforts to reduce the carbon footprint of steel rebars include the use of recycled materials, the optimization of designs, and the exploration of alternative materials like FRPs. Ultimately, a comprehensive approach that considers both the environmental impact and the structural requirements of a building is necessary to minimize the carbon footprint associated with steel rebars.

Q: What are the guidelines for the proper cover thickness of steel rebars?: The guidelines for the proper cover thickness of steel rebars vary depending on the specific application and the code or standard being followed. However, in general, the cover thickness for steel rebars is determined based on factors such as the exposure conditions (e.g., moisture, chemicals), the structural requirements (e.g., load-bearing capacity), and the durability considerations. It is recommended to consult the applicable building codes, design standards, or engineering specifications to determine the specific guidelines for cover thickness in a given situation.

Q: Are steel rebars suitable for use in industrial structures?: Yes, steel rebars are commonly used in industrial structures due to their high strength and durability. They provide reinforcement and structural support, making them suitable for withstanding heavy loads and maintaining the integrity of the structure.

Q: What is the role of steel rebars in ensuring structural stability?: In various construction projects, steel rebars are essential for maintaining structural stability. These reinforced bars are primarily utilized to strengthen concrete structures, like buildings, bridges, and highways, by providing additional tensile strength. Concrete is a highly versatile material capable of effectively withstanding compressive forces. However, its resistance to tensile forces is limited. This is where steel rebars come into play. By reinforcing concrete with steel rebars, the resulting composite material can effectively resist both compressive and tensile forces, thereby enhancing its overall structural stability. Under loads such as the weight of the structure or external forces like wind or seismic activity, concrete experiences tensile stresses. Without reinforcement, these tensile stresses can lead to cracks and ultimately result in structural failure. Thanks to their high ductility and tensile strength, steel rebars can absorb and distribute these tensile forces throughout the structure. To ensure optimal reinforcement, the placement and arrangement of steel rebars are carefully designed. Typically, they are embedded within the concrete in a grid-like pattern, forming a reinforced concrete matrix. This matrix strengthens the structure and prevents cracks from propagating, thereby effectively increasing its load-bearing capacity and durability. Furthermore, steel rebars also play a crucial role in maintaining the structural integrity of concrete structures over time. They help combat the effects of shrinkage, expansion, and temperature fluctuations that can lead to cracking. By providing a strong and flexible reinforcement system, steel rebars minimize the risks of structural damage and ensure the long-term stability of the construction. In summary, the role of steel rebars in ensuring structural stability can be summarized as follows: increasing the tensile strength of concrete, preventing cracks and structural failure, enhancing load-bearing capacity, and promoting long-term durability. By reinforcing concrete structures with steel rebars, engineers can create resilient and safe constructions capable of withstanding various forces and maintaining their integrity for decades.

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