Hot Rolled Steel Rebar Deformed Bar High Quality
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 1000 m.t.
- Supply Capability:
- 30000 m.t./month
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Product Description:
Quick Details
Standard:AISI, ASTM, BS, DIN, GB, JIS
Grade:HRB335
Diameter:10mm-40mm
Length:Normally 6~12m
Place of Origin:Fujian, China (Mainland)
Model Number:QZMM-ST001
Application:Building material, construction, road, bridge,etc
Product Name:Steel Rebars,Deformed Steel Bars,Building Material China Manufacturer
Standard:ASTM A615 /BS BS 4449 /GB HRB/ JIS G3112
Material:HRB335
Shape:Straight reinforcing bars
Technique:Low temperature hot-rolling reinforcing deformed steel rebar
Tolerance:As the standard or as your requirement
MOQ:100tons per size steel rebar
Packing details Steel:Steel rebar packed in bundle or as your requirement
Delivery:Within 30 days after deposit
Post:XIAMEN,CHINA
Packaging & Delivery
| Packaging Details: | in bundles or as customer's requirement |
|---|---|
| Delivery Detail: | Within 30days after receiving your deposit or copy of L/C |
Product Description
| Name | Steel Rebars,Deformed Steel Bars,Building Material China Manufacturer |
| Standard | ASTM A615 /BS BS 4449 /GB HRB/ JIS G3112 |
| Grade | A615 Gr40/60/75 BS 4449 Gr460,B500 GB HRB335(E) JIS G3112 SD390 |
| Diameter | 10mm-40mm |
| Length | 6-12m |
| Technique | Low temperature hot-rolling reinforcing deformed steel rebar |
| Tolerance | As the standard or as your requirement |
| Application | Building, construction, road, bridge,etc |
| Certificated | BV |
| MOQ | 100tons per size steel rebar |
| Packing details | Steel rebar packed in bundle or as your requirement |
| Delivery | Within 30 days after deposit |
| Payment | T/T or L/C |
Chemical Composition
Grade | Technical data of the original chemical composition (%) | |||||||
C | Mn | Si | S | P | B | |||
HRB335 | ≤0.25 | ≤1.60 | ≤0.80 | ≤0.045 | ≤0.045 | >0.0008 | ||
Physics capability | ||||||||
Yield Strength(N/cm2) | Tensile Strength(N/cm2) | Elongation (%) | ||||||
≥335 | ≥490 | ≥16 | ||||||
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 | ||
Physics capability | ||||||||
Yield Strength(N/cm2) | Tensile Strength(N/cm2) | Elongation (%) | ||||||
≥400 | ≥570 | ≥14 | ||||||
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: How do steel rebars affect the structural capacity of concrete beams and columns?
- The role of steel rebars in enhancing the structural capacity of concrete beams and columns cannot be overstated. These rebars serve as reinforcement, providing added strength and durability to the concrete elements. When steel rebars are incorporated into the concrete, the load-bearing capacity of the beams and columns is significantly increased. One of the main functions of steel rebars is to counteract the tensile forces that concrete alone cannot withstand. Concrete is strong under compression but weak under tension, which makes it prone to cracking and failure when subjected to tensile stress. By integrating steel rebars into the concrete, the tensile strength of the reinforced element is greatly improved. The steel rebars act as a framework within the concrete, distributing the load more evenly and reducing the risk of localized failure. When external loads or forces are applied, the rebars bear the tensile stress while the concrete maintains its compressive strength. This combination of materials creates a reinforced concrete element that can handle heavier loads, thus increasing the structural capacity of the beams and columns. Moreover, steel rebars also enhance the ductility and flexibility of the concrete elements. This means that the reinforced beams and columns can undergo greater deformations before reaching failure. The ability to deform without breaking is particularly important in regions prone to earthquakes, as it allows the structure to absorb and dissipate energy, thereby minimizing the risk of collapse. Additionally, steel rebars improve the resistance of concrete beams and columns against shrinkage and thermal stresses. Concrete tends to shrink as it cures and expand and contract due to temperature variations. The presence of steel rebars helps minimize these effects by providing a reinforcing network that restrains the concrete from excessive movements, preventing cracks and preserving the overall structural integrity. In conclusion, steel rebars have a profound impact on the structural capacity of concrete beams and columns. They enhance tensile strength, improve ductility, reduce shrinkage and thermal stresses, and increase overall load-bearing capacity. The combination of concrete and steel reinforcement produces a significantly stronger and more durable structural element that can withstand higher loads, ensuring the stability and safety of the entire structure.
- Q: How do steel rebars affect the overall weight of a construction project?
- Steel rebars can have a significant impact on the overall weight of a construction project. Rebars are typically used to reinforce concrete structures, such as beams, columns, and foundations, to enhance their strength and durability. As steel rebars are made of high-strength steel, they add substantial weight to the project. The weight of steel rebars can affect various aspects of the construction project. Firstly, the total weight of the rebars needs to be considered during the design phase to ensure that the structure can support the additional load. This is particularly important when constructing high-rise buildings or structures that require heavy reinforcement. Additionally, the weight of steel rebars can impact transportation and logistics. As rebars are generally delivered to the construction site in large quantities, their weight can affect the choice of transportation methods, such as trucks or cranes, and may require special permits or equipment. The weight of rebars also adds to the cost of transportation. Moreover, the overall weight of the construction project affects the foundation requirements. The higher the weight of a structure, the stronger the foundation needs to be to support and distribute the load adequately. This may result in the need for deeper or wider foundations, which can increase costs and construction time. Lastly, the weight of steel rebars can impact the overall sustainability of a construction project. Since the production of steel involves significant energy consumption and emissions, the increased weight of rebars can contribute to a higher carbon footprint. Therefore, it is essential for construction projects to find a balance between reinforcement needs and environmental considerations. In conclusion, steel rebars have a tangible impact on the overall weight of a construction project. Their weight affects the design, transportation, foundation requirements, and sustainability of the project. It is crucial for architects, engineers, and project managers to carefully consider the weight of steel rebars to ensure the structural integrity and efficiency of the construction project.
- Q: Can steel rebars be prefabricated off-site?
- Yes, steel rebars can be prefabricated off-site. Prefabrication involves manufacturing and assembling components, including rebars, in a controlled environment away from the construction site. This method offers numerous advantages, such as improved quality control, reduced construction time, and increased efficiency. Prefabricated steel rebars can be customized, cut, bent, and welded to meet specific project requirements before being transported to the construction site for installation.
- Q: Can steel rebars be welded or spliced together?
- Steel rebars can be welded or spliced together. Welding is a commonly utilized technique in joining steel rebars. It involves heating the rebars to a high temperature and utilizing a welding electrode to melt the steel, forming a sturdy bond. Welding is commonly employed in construction projects that require continuous reinforcement. Alternatively, splicing involves connecting two rebars using mechanical connectors or couplers. These connectors are designed to offer a dependable and robust connection between the rebars. Splicing is frequently used when extending rebars or joining different rebars. Both welding and splicing methods possess their own advantages and disadvantages. Welding provides continuous reinforcement and establishes a strong bond between the rebars; however, it necessitates skilled labor and can be time-consuming. On the other hand, splicing is a quicker and easier process, but it may slightly reduce the overall strength of the reinforcement. It is crucial to note that the utilization of welding or splicing for steel rebars must conform to the appropriate codes and standards, as well as receive approval from the structural engineer or responsible authority.
- Q: Can steel rebars be used in the construction of dams or reservoirs?
- Yes, steel rebars can be used in the construction of dams or reservoirs. Steel rebars are commonly used as reinforcement in concrete structures, including dams and reservoirs, to provide strength and stability. They help to distribute and resist the tensile forces that can occur in these structures due to water pressure and other external loads. Steel rebars are corrosion-resistant, durable, and have high tensile strength, making them an ideal choice for such applications. Additionally, they can be easily shaped and installed, providing flexibility in the design and construction process.
- Q: How long do steel rebars last in a concrete structure?
- Steel rebars in a concrete structure can last for several decades, typically 50 to 100 years, depending on various factors such as the quality of the concrete, environmental conditions, and maintenance practices.
- Q: What are the guidelines for the proper curing of concrete with steel rebars?
- The proper curing of concrete with steel rebars requires adherence to the following guidelines: 1. Moisture: To ensure proper hydration and strength development, it is necessary to maintain moisture during the curing process. However, excessive moisture should be avoided when curing concrete with steel rebars to prevent corrosion and damage. Therefore, it is important to strike a balance between providing sufficient moisture and preventing the accumulation of standing water around the rebars. 2. Covering: During the pouring process, it is crucial to adequately cover the steel rebars with concrete to protect against corrosion. The thickness of the cover should meet the design specifications to ensure adequate strength and durability. 3. Curing time: The curing time for concrete with steel rebars is typically longer than that of plain concrete. This is due to the need for the steel to bond with the concrete and achieve proper adhesion. The recommended curing period may vary depending on factors such as ambient temperature, humidity, and the specific type of steel used. It is important to refer to the project specifications or consult with a structural engineer to determine the appropriate curing time for the specific application. 4. Temperature control: Temperature control is essential during the curing process to ensure uniform hydration and prevent thermal stress. Rapid temperature changes can lead to cracking and compromise the integrity of the concrete. Therefore, it is important to protect the concrete from extreme temperature variations and provide insulation or shading as necessary. 5. Protection from external elements: Concrete with steel rebars must be safeguarded against external elements that can cause damage or corrosion. This includes protection from chloride ions, carbonation, and chemicals. Additional protection can be provided by applying suitable surface coatings or sealants. 6. Inspection and maintenance: Regular inspection and maintenance are vital for ensuring the long-term durability of concrete with steel rebars. It is important to monitor for signs of corrosion, cracking, or deterioration and take appropriate action promptly. This may involve repairing damaged areas, applying protective coatings, or implementing measures to prevent corrosion. By following these guidelines, the proper curing of concrete with steel rebars can be achieved, resulting in a construction material that is structurally sound and durable, capable of withstanding the test of time.
- Q: What are the different types of tests conducted on steel rebars for quality assurance?
- There are several types of tests conducted on steel rebars for quality assurance. Some common tests include tensile testing, bend testing, impact testing, hardness testing, and chemical composition analysis. These tests help ensure that the rebars meet the required mechanical properties, dimensional tolerances, and chemical composition standards, ensuring their quality and suitability for various construction applications.
- Q: How do steel rebars contribute to the overall safety of a structure?
- The overall safety of a structure is significantly enhanced by steel rebars in multiple ways. Firstly, concrete, which is brittle and prone to cracking under tension, is reinforced by steel rebars. By embedding steel rebars within the concrete, the structure gains increased tensile strength, enabling it to withstand greater loads and resist cracking or failure. Secondly, stress is distributed and dissipated throughout the structure with the help of steel rebars. When a load is applied to a structure, such as an earthquake or strong winds, internal forces are generated that need to be managed and dispersed. Steel rebars serve as an interconnected network of bars, transferring the load from one rebar to another, and ultimately to the foundation. This prevents localized stress concentrations and ensures that the structure can better withstand external forces. Moreover, the ductility of a structure is improved by steel rebars. Ductility refers to the ability of a material to deform without breaking. When a structure is subjected to extreme forces, such as seismic activity or high winds, it must be able to flex and absorb energy without collapsing. Steel rebars provide this ductility by elongating and deforming under stress, absorbing and dissipating energy before reaching a critical point of failure. This characteristic is crucial in protecting the overall integrity of the structure and ensuring the safety of its occupants. Furthermore, steel rebars also contribute to the long-term durability of a structure. Concrete is vulnerable to various environmental factors, including moisture, temperature fluctuations, and chemical exposure, which can cause deterioration and weakening over time. By reinforcing the concrete with steel rebars, the structure becomes more resistant to these factors, maintaining its strength and stability for an extended period. In conclusion, steel rebars are essential for ensuring the overall safety of a structure. They enhance the tensile strength of concrete, distribute stress, improve ductility, and increase the durability of the structure. By providing these crucial properties, steel rebars significantly reduce the risk of structural failure and safeguard the lives and well-being of individuals within the building.
- Q: How are steel rebars protected from rusting?
- Steel rebars undergo corrosion protection to prevent rusting. Various methods are used for this purpose, including the application of protective coatings, galvanization, and the utilization of corrosion inhibitors. One effective method is the utilization of protective coatings, which act as a barrier between the rebar and its surroundings. By doing so, they prevent moisture and oxygen from reaching the steel surface. These coatings can be applied using techniques like epoxy coating, fusion-bonded epoxy (FBE) coating, or zinc-rich paint. These coatings exhibit exceptional adhesion and durability, ensuring long-term protection against rust. Galvanization is another method employed, which involves coating the rebar with a layer of zinc. Zinc serves as a sacrificial anode, corroding in place of the steel when exposed to moisture and oxygen. This sacrificial corrosion process aids in safeguarding the steel from rusting. Galvanized rebars are often used in environments with high moisture levels, such as coastal areas or regions with high humidity. Corrosion inhibitors are also utilized to protect steel rebars. These inhibitors are chemicals added to the concrete mix or directly applied to the rebar surface. They function by creating a protective layer on the steel surface, inhibiting the corrosion process. Corrosion inhibitors are particularly valuable in scenarios where the rebar may encounter chloride ions, which accelerate the corrosion of steel. In conclusion, a combination of these methods is frequently employed to ensure comprehensive protection against rusting for steel rebars. This guarantees the durability and structural integrity of reinforced concrete structures like buildings, bridges, and highways.
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Hot Rolled Steel Rebar Deformed Bar High Quality
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 1000 m.t.
- Supply Capability:
- 30000 m.t./month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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