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:Can steel rebars be used in cold storage construction?: Cold storage construction can utilize steel rebars. These rebars are extensively employed in construction for their strength and durability. In the context of cold storage construction, where low temperatures are maintained, steel rebars offer multiple benefits. To begin with, steel rebars possess remarkable thermal conductivity, enabling them to quickly adapt to the low temperatures inside the cold storage facility. This facilitates the maintenance of a consistent temperature throughout the structure, preventing any potential issues of expansion or contraction. Moreover, steel rebars have a high tensile strength, making them suitable for withstanding heavy loads and providing structural stability in cold storage construction. Given that the cold storage facility often requires a robust framework to support the weight of stored products and equipment, this strength is crucial. Additionally, steel rebars exhibit corrosion resistance, which is particularly vital in cold storage environments. The combination of low temperatures and high humidity levels can create an environment favorable to corrosion. However, steel rebars are typically coated with epoxy or galvanized to shield them from moisture and prevent rusting. Lastly, steel rebars are easily obtainable and cost-effective, making them a practical choice for cold storage construction projects. They can be readily sourced and fabricated to meet specific design requirements, ensuring that the structure can withstand the unique challenges of a cold storage environment. In conclusion, steel rebars can effectively be utilized in cold storage construction due to their thermal conductivity, high tensile strength, corrosion resistance, and availability. They provide the necessary structural support and durability required for the construction of cold storage facilities.

Q:How are steel rebars classified based on grades?: Steel rebars are classified based on grades according to their yield strength and tensile strength. The grades range from 40 to 60, with higher numbers indicating higher strength.

Q:Can steel rebars be used in structures with high vibrations?: Yes, steel rebars can be used in structures with high vibrations. Steel rebars are commonly used in construction projects, including those with high vibrations, to reinforce concrete and provide stability. The strong and durable nature of steel rebars helps to absorb and distribute the vibrations, minimizing any potential damage to the structure. However, it is important to ensure that the design and installation of steel rebars are done correctly to effectively withstand and manage the vibrations.

Q:What is the impact of steel rebars on the overall energy efficiency of a building?: Steel rebars have a significant impact on the overall energy efficiency of a building. As a reinforcing material, steel rebars play a crucial role in ensuring the structural integrity and durability of the building. By providing strength and stability to concrete, they help reduce the need for additional support elements, such as columns or walls, resulting in more open and flexible interior spaces. This, in turn, allows for improved natural lighting and ventilation, reducing the reliance on artificial lighting and HVAC systems. Additionally, steel rebars can enhance the thermal performance of a building by absorbing and releasing heat slowly, thereby contributing to better energy management and reducing heating and cooling needs. Overall, the use of steel rebars positively impacts the energy efficiency of a building by optimizing its design, enhancing its performance, and reducing its energy consumption.

Q:What are the guidelines for storing steel rebars on a construction site?: The guidelines for storing steel rebars on a construction site typically include keeping them off the ground to prevent rust and corrosion, stacking them neatly and securely to avoid accidents, and protecting them from exposure to moisture and other harmful elements. It is also important to separate different sizes and types of rebars to ensure easy identification and accessibility when needed.

Q:How do steel rebars enhance the bond between concrete and reinforcement?: Steel rebars enhance the bond between concrete and reinforcement through various mechanisms. Firstly, the presence of rebars in concrete increases the mechanical interlock between the two materials. As concrete is poured around the rebars, it fills the gaps between the steel bars, creating a strong bond when it hardens. This mechanical interlock helps to prevent the separation of concrete and reinforcement, especially under tensile loads. Secondly, steel rebars enhance the bond by providing additional surface area for adhesion. The rough texture of the rebars allows the concrete to grip onto the steel surface, creating a stronger bond. This adhesion is further improved by the corrosion products that form on the surface of the steel rebars over time. These products create a rougher surface, increasing the bond strength between the concrete and reinforcement. Thirdly, rebars act as load transfer devices in concrete structures. When external forces are applied to the structure, the rebars distribute and transfer these forces to the surrounding concrete. This load transfer mechanism helps to improve the overall structural integrity and performance of the concrete element. Additionally, steel rebars also enhance the bond between concrete and reinforcement through their ability to resist deformation. Under tensile loads, the rebars elongate and absorb the stress, preventing the concrete from cracking. This prevents the development of cracks that could weaken the bond between the two materials. In summary, steel rebars enhance the bond between concrete and reinforcement by providing mechanical interlock, increased surface area for adhesion, load transfer capabilities, and resistance to deformation. These factors collectively contribute to the overall strength, durability, and performance of reinforced concrete structures.

Q:Can steel rebars be used in marine environments?: Yes, steel rebars can be used in marine environments, but they need to be properly protected against corrosion. This can be achieved by using corrosion-resistant coatings or by using stainless steel rebars. Additionally, proper maintenance and regular inspections are necessary to ensure their durability and prevent corrosion damage.

Q:What are the guidelines for proper anchoring of steel rebars in concrete structures?: For the structural integrity and stability of the construction, it is crucial to properly anchor steel rebars in concrete structures. Here are the guidelines for proper anchoring: 1. Embedment length: To ensure sufficient bond strength, the rebars should be embedded in the concrete for a specific length. The required embedment length depends on factors such as rebar diameter, concrete strength, and load conditions, as specified in the design. 2. Lap length: When joining two rebars, a minimum lap length is necessary for reinforcement continuity. The lap length is determined by the rebar diameter, concrete strength, and structural design requirements. 3. Concrete cover: To safeguard the rebars from corrosion and fire, adequate concrete cover should be provided. The concrete cover is the distance between the outer surface of the rebars and the nearest concrete surface. It depends on factors like environmental conditions, fire resistance requirements, and durability considerations. 4. Spacing and arrangement: The rebars should be appropriately spaced and arranged according to the structural design requirements. The spacing is determined by the structural load and design specifications. Inadequate spacing can compromise the structural strength by providing insufficient reinforcement. 5. Proper positioning: Accurate positioning of rebars is essential, following the design drawings and specifications. They should be placed in the concrete formwork before pouring to achieve the desired structural behavior. Incorrect positioning can result in misalignment or insufficient concrete cover. 6. Mechanical anchorage: Mechanical anchorage devices such as rebar couplers, anchor bolts, or hooks can be utilized to enhance rebar anchoring in concrete structures. These devices provide additional reinforcement and prevent slippage or pull-out of the rebars under load. 7. Quality control: Regular inspection and quality control measures should be implemented to ensure compliance with the anchoring guidelines. This includes checking rebar dimensions and spacing, embedment depth, concrete cover, and ensuring proper installation techniques. It is important to note that these guidelines may vary based on project requirements, local building codes, and design specifications. Therefore, consulting a structural engineer or referring to relevant building codes and standards is essential for specific guidelines applicable to each construction project.

Q:What is the elongation of steel rebars?: The elongation of steel rebars refers to the amount of deformation or stretching the rebars can undergo before they reach their breaking point.

Q:What is the effect of fatigue on steel rebars?: Fatigue can significantly weaken steel rebars, leading to a decrease in their structural integrity and potential failure under repeated loading or stress.

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