GB Standard HRB400 Steel Deformed Bar 10mm/12mm
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT or LC
- Min Order Qty:
- 25 m.t
- Supply Capability:
- 20000 m.t/month
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GB Standard HRB400 Steel Deformed Bar 10mm/12mm
Description:
-Standard: GB
-Material: HRB400
-Specification:
| Diameter(mm) | Section Area(mm2) | Mass(Kg/m) | Length(m) |
| 10 | 78.54 | 0.617 | 9, 12 or as customs' request |
| 12 | 113.1 | 0.888 | 9, 12 or as customs' request |
Chemical Composition(%) of GB Standard HRB400 Steel Deformed Bar 10mm/12mm:
| C | Mn | Si | S | P | V |
| ≤0.25 | ≤1.60 | ≤0.08 | ≤0.045 | ≤0.045 | 0.04-0.12 |
Mechanical Properties of GB Standard HRB400 Steel Deformed Bar 10mm/12mm:
Yield Strength (N/cm²) | Tensile Strength (N/cm²) | Elongation (%) |
≥400 | ≥570 | ≥14 |
Usage and Applications of GB Standard HRB400 Steel Deformed Bar 10mm/12mm:
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 GB Standard HRB400 Steel Deformed Bar 10mm/12mm:
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
Images of GB Standard HRB400 Steel Deformed Bar 10mm/12mm:
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- Q:What are the guidelines for ensuring proper concrete cover over steel rebars?
- Proper concrete cover over steel rebars is crucial for the long-term durability and performance of reinforced concrete structures. Here are some guidelines to ensure the correct concrete cover over steel rebars: 1. Follow building codes and specifications: Building codes and specifications provide minimum requirements for concrete cover over steel rebars. These guidelines are established to ensure structural integrity, fire resistance, and resistance to corrosion. It is essential to consult and adhere to the applicable building codes and specifications for the specific project. 2. Determine the required concrete cover: The required concrete cover depends on various factors, such as environmental conditions, exposure to aggressive agents, structural design, and reinforcement type. Structural engineers typically determine the required concrete cover based on these factors to ensure the rebars are adequately protected. 3. Use appropriate concrete mix design: The concrete mix design should be carefully selected to achieve the desired strength, durability, and workability. The mix design should consider factors like the quality and size of aggregates, cement content, water-to-cement ratio, and use of additives or admixtures. Using a well-designed concrete mix will help ensure proper bonding and adequate protection of the steel rebars. 4. Maintain proper construction practices: During construction, it is crucial to maintain proper practices to ensure the correct concrete cover over steel rebars. This includes using proper formwork and reinforcement placement techniques, ensuring proper concrete placement, compaction, and curing. The rebars should be adequately positioned and securely tied to maintain the required cover and prevent displacement during concrete pouring. 5. Inspect and monitor during construction: Regular inspections and monitoring at various stages of construction are essential to ensure compliance with the required concrete cover. This includes checking reinforcement placement, cover thickness, and overall quality of the concrete. Any deviations from the specified requirements should be addressed and rectified promptly. 6. Protect against corrosion: Adequate concrete cover over steel rebars plays a significant role in protecting against corrosion. However, additional measures such as using corrosion-resistant rebars, applying epoxy coatings, or using corrosion inhibitors can further enhance the durability and longevity of the reinforced concrete structure. 7. Document and maintain records: It is important to document the construction process, including the reinforcement placement, concrete cover thickness, and any deviations or modifications made during construction. This documentation will serve as a valuable resource for future reference, maintenance, and repairs. By following these guidelines, proper concrete cover over steel rebars can be ensured, resulting in durable and structurally sound reinforced concrete structures. It is always recommended to consult with structural engineers and construction professionals for specific project requirements and to ensure compliance with local building codes and regulations.
- Q:What are steel rebars made of?
- Reinforcement bars, commonly known as steel rebars, are primarily composed of carbon steel. Carbon steel is an alloy of iron and carbon, with the addition of small quantities of other elements like manganese, silicon, and copper to enhance its properties. Steel rebars typically contain a carbon content ranging from 0.2% to 0.3%, which imparts the necessary strength and durability needed for reinforcing concrete structures. To shape and size the steel, hot rolling is employed, involving the heating of the material to high temperatures and passing it through rollers. This process enhances the mechanical properties and structural integrity of the rebars, making them suitable for concrete construction applications that necessitate added strength and support.
- Q:What are the common challenges in handling steel rebars during construction?
- Some common challenges in handling steel rebars during construction include their heavy weight, which can make them difficult to lift and maneuver, the need for proper storage to prevent rusting and damage, the risk of injury if not handled correctly, and the need for precision in cutting and bending them to fit specific structures.
- Q:Can steel rebars be used in industrial buildings?
- Yes, steel rebars can be used in industrial buildings. Steel rebars are commonly used as reinforcing materials in concrete structures, providing strength and stability. In industrial buildings, where heavy loads and high durability are required, steel rebars are often used to reinforce the concrete foundation, columns, beams, and slabs. They enhance the structural integrity of the building and ensure its ability to handle the demands of industrial operations and equipment.
- Q:Can steel rebars be used in structures with high levels of carbonation or acid attack?
- Structures with high levels of carbonation or acid attack should avoid using steel rebars. Carbonation occurs when alkaline compounds in concrete react with carbon dioxide from the atmosphere, resulting in a decrease in the concrete's pH level. This can cause the corrosion of steel rebars, as the lower pH levels create an acidic environment that promotes rusting. Similarly, acid attack happens when structures come into contact with acidic substances like industrial chemicals or acid rain. Acidic environments accelerate the corrosion process by further lowering the pH levels of the concrete, increasing the risk of steel rebar deterioration. To prevent these problems, structures exposed to high levels of carbonation or acid attack can use alternative materials such as stainless steel, epoxy-coated rebars, or fiber-reinforced polymer rebars. These materials possess improved corrosion resistance properties, ensuring better durability in challenging environments. It is essential to consider the specific conditions in which the structure will be exposed and seek advice from structural engineers to select the most suitable materials for long-term performance and safety.
- Q:Is thread steel rod or wire?
- Steel is known as hot rolled ribbed bar.
- Q:What are the dimensions and sizes of steel rebars?
- Steel rebars, also known as reinforcing bars, come in various dimensions and sizes. The most common sizes range from #3 to #18, with diameters ranging from 3/8 inch to 2 1/4 inches. The length of rebars typically varies from 20 feet to 60 feet, but can also be customized to meet specific project requirements. Additionally, rebars are available in different shapes, such as round, square, or deformed, to enhance their bonding with concrete.
- Q:Can steel rebars be used in railway and metro construction?
- Yes, steel rebars can be used in railway and metro construction. Steel rebars are commonly used in reinforced concrete structures, including railway tracks and metro platforms, to provide strength and stability to the construction. They are essential for ensuring the durability and longevity of these infrastructure projects.
- Q:What is the role of steel rebars in basement wall construction?
- The role of steel rebars in basement wall construction is to provide reinforcement and strength to the concrete walls. The rebars are embedded within the concrete to help resist tension and prevent cracking, ensuring the stability and durability of the basement walls.
- Q:Are there any limitations in using steel rebars in construction?
- Yes, there are limitations in using steel rebars in construction. Some limitations include susceptibility to corrosion in certain environments, potential for expansion and contraction due to temperature changes, and limited flexibility compared to other construction materials. Additionally, steel rebars are heavy, which can make handling and transportation more challenging.
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GB Standard HRB400 Steel Deformed Bar 10mm/12mm
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT or LC
- Min Order Qty:
- 25 m.t
- Supply Capability:
- 20000 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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