GB Standard HRB400 Steel Deformed Bar 28mm/32mm
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT or LC
- Min Order Qty:
- 50 m.t
- Supply Capability:
- 20000 m.t/month
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GB Standard HRB400 Steel Deformed Bar 28mm/32mm
Description:
-Standard: GB
-Material: HRB400
-Specification:
| Diameter(mm) | Section Area(mm2) | Mass(Kg/m) | Length(m) |
| 28 | 615.8 | 4.83 | 9, 12 or as customs' request |
| 32 | 804.2 | 6.31 | 9, 12 or as customs' request |
Chemical Composition(%) of GB Standard HRB400 Steel Deformed Bar 28mm/32mm:
| 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 28mm/32mm:
Yield Strength (N/cm²) | Tensile Strength (N/cm²) | Elongation (%) |
≥400 | ≥570 | ≥14 |
Usage and Applications of GB Standard HRB400 Steel Deformed Bar 28mm/32mm:
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 28mm/32mm:
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 28mm/32mm:
*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: What are the different types of steel rebars used in earthquake-prone regions?
- In earthquake-prone regions, various types of steel rebars are used to enhance the structural integrity and resilience of buildings. These rebars are specifically designed to withstand the powerful forces generated during seismic events, thus reducing the risk of structural failure. The different types of steel rebars commonly used in earthquake-prone regions include: 1. Mild Steel Rebars (MSR): These rebars, also known as carbon steel rebars, are the most commonly used type due to their affordability and availability. MSR rebars have a relatively low yield strength, typically ranging from 250 to 420 megapascals (MPa). While they provide basic reinforcement, they are not specifically designed to withstand intense seismic forces. 2. High-Strength Deformed Bars (HSD): HSD rebars have significantly higher yield strength compared to MSR rebars, typically ranging from 415 to 600 MPa. These rebars are manufactured by subjecting carbon steel to additional heat treatment and controlled cooling, resulting in improved strength and ductility. HSD rebars are more resistant to seismic forces and are commonly used in earthquake-prone regions. 3. Stainless Steel Rebars (SSR): Stainless steel rebars are highly resistant to corrosion and possess excellent strength characteristics. They are commonly used in coastal earthquake-prone regions where exposure to saltwater or corrosive environments is a concern. SSR rebars provide enhanced durability and longevity, reducing the risk of structural damage caused by corrosion over time. 4. Fiberglass Rebars: Fiberglass rebars, also known as FRP (fiber-reinforced polymer) rebars, are non-metallic reinforcement alternatives gaining popularity in earthquake-prone regions. Made from glass fibers embedded in a polymer resin matrix, FRP rebars offer excellent resistance to corrosion, making them suitable for coastal regions. Although they have lower strength compared to steel rebars, FRP rebars have high tensile strength, making them a viable option for seismic reinforcement. 5. Galvanized Rebars: Galvanized rebars are carbon steel rebars coated with a layer of zinc to enhance corrosion resistance. The zinc coating acts as a sacrificial layer, protecting the underlying steel from corrosion. While galvanized rebars are not specifically designed for seismic resistance, they offer improved durability in earthquake-prone regions with high moisture or corrosive conditions. It is important to note that the selection of steel rebars in earthquake-prone regions depends on various factors, including the level of seismic activity, building codes and regulations, budget constraints, and specific project requirements. Consulting with structural engineers and adhering to local building codes is crucial in determining the appropriate type of steel rebars for seismic reinforcement to ensure the safety and resilience of structures in these regions.
- Q: What is the typical weight of a steel rebar?
- The typical weight of a steel rebar can vary depending on its diameter and length. However, the most commonly used steel rebar in construction projects is typically 20 feet long and ranges in diameter from 1/2 inch to 1 inch. For this standard size, the weight can range from around 7.5 pounds to 24 pounds per linear foot. Therefore, a 20-foot steel rebar can weigh anywhere between approximately 150 pounds to 480 pounds. It is important to note that different countries may have different weight standards for steel rebars, so it is always advisable to consult local specifications and standards for accurate information.
- Q: What are the advantages of using epoxy-coated steel rebars?
- One of the main advantages of using epoxy-coated steel rebars is their superior corrosion resistance. The epoxy coating acts as a protective barrier, preventing moisture and chemicals from reaching the steel, thereby significantly reducing the risk of rusting and deterioration. This enhanced durability translates into longer service life and reduced maintenance costs. Additionally, the epoxy coating provides a smoother surface, improving bond strength with concrete and enhancing the overall structural integrity of reinforced concrete structures.
- Q: How do steel rebars contribute to the sustainability of a building?
- Steel rebars contribute to the sustainability of a building in several ways. Firstly, they provide structural strength and durability, allowing the building to withstand natural disasters and remain functional for a longer period. This reduces the need for frequent repairs or reconstruction, ultimately reducing resource consumption and waste generation. Secondly, steel rebars are recyclable, meaning they can be reused in future construction projects, reducing the demand for raw materials and minimizing the environmental impact of steel production. Additionally, the use of steel rebars in reinforced concrete structures allows for the use of thinner and lighter concrete sections, resulting in reduced material usage and lower carbon emissions during construction and transportation. Overall, steel rebars enhance the longevity, efficiency, and environmental performance of buildings, making them more sustainable.
- Q: What are the safety precautions to take when working with steel rebars?
- When working with steel rebars, it is crucial to follow various safety precautions to ensure the well-being of yourself and those around you. Here are some safety measures to consider: 1. Personal Protective Equipment (PPE): Always wear appropriate PPE such as safety goggles, gloves, hard hats, and steel-toed boots to protect yourself from potential hazards like falling objects, cuts, and burns. 2. Training and Awareness: Obtain proper training and be aware of the potential risks associated with working with steel rebars. Educate yourself and your team about the correct procedures and safe handling techniques. 3. Secure Storage: Store steel rebars in a designated area to prevent them from falling or causing accidents. Stack them systematically, ensuring stability and avoiding areas with heavy foot traffic. 4. Lifting Techniques: When lifting steel rebars, use proper lifting techniques such as bending your knees and using your legs to lift rather than your back. Avoid overloading yourself and seek assistance when needed. 5. Handling Tools: Use suitable tools like wire mesh gloves or pliers to handle steel rebars. This prevents injuries caused by sharp edges or splinters. 6. Inspection: Regularly inspect steel rebars for any defects, such as rust or sharp edges, before using them. Damaged or defective rebars should be discarded and replaced. 7. Clear Work Area: Keep the work area organized and free from clutter, ensuring that there are no tripping hazards or obstacles that could cause accidents. 8. Communication: Maintain clear communication with your team members, signaling when moving or handling steel rebars. This helps prevent accidental collisions or injuries. 9. Fire Safety: Be mindful of fire hazards when working with steel rebars. Keep flammable materials away from the work area and have fire extinguishers readily accessible. 10. First Aid: Ensure that a first aid kit is available nearby, and be familiar with basic first aid procedures in case of any accidents or injuries. By following these safety precautions, you can significantly reduce the risk of accidents and injuries while working with steel rebars. Remember, safety should always be a top priority in any work environment.
- Q: How are steel rebars different from steel mesh?
- Steel rebars and steel mesh are both made from steel, but they differ in their shape and purpose. Steel rebars are long, cylindrical bars with ridges or deformations along their surface, designed to provide strength and reinforcement to concrete structures. They are typically used in construction projects to increase the tensile strength of concrete and prevent cracking or collapsing. On the other hand, steel mesh consists of interconnected wires that form a grid-like pattern. It is primarily used as a reinforcing material in areas that require a large amount of coverage, such as slabs, walls, or foundations. Steel mesh provides structural support and helps distribute load evenly, reinforcing the concrete against potential stresses. In summary, while both steel rebars and steel mesh serve the purpose of reinforcing concrete, they differ in shape and application.
- Q: What is the international standard for steel rebars?
- The international standard for steel rebars is commonly known as ASTM A615/A615M-20.
- Q: What are the factors to consider while designing with steel rebars?
- There are several factors to consider while designing with steel rebars. 1. Strength and durability: The rebars should be selected based on the required strength and durability to withstand the anticipated loads and environmental conditions. 2. Size and shape: The size and shape of the rebars should be chosen to ensure proper placement, spacing, and anchorage within the concrete structure. 3. Corrosion resistance: The rebars should have adequate corrosion resistance, especially in environments where they may be exposed to moisture or chemicals. This can be achieved through proper material selection or by applying protective coatings. 4. Bond strength: The bond between the rebars and the concrete is crucial for transferring loads. The design should consider the factors that influence bond strength, such as surface roughness, bar diameter, and the use of proper concrete cover. 5. Construction constraints: The design should take into account any construction constraints, such as limitations in handling and placing the rebars, and ensure that the design is feasible and practical to implement. 6. Code compliance: Designing with steel rebars should adhere to relevant building codes and standards to ensure structural safety and regulatory compliance. By considering these factors, designers can create robust and reliable structures that effectively utilize the strength and versatility of steel rebars.
- Q: How do steel rebars affect the overall load-bearing capacity of a structure?
- The load-bearing capacity of a structure is greatly enhanced by steel rebars. These reinforcing bars are commonly added to concrete structures, such as beams, columns, and slabs, to add strength and durability. The main purpose of rebars is to resist tensile forces, which concrete alone cannot effectively handle. By embedding steel rebars in the concrete, the structure's overall load-bearing capacity significantly increases. When the structure is subjected to a load, the rebars evenly distribute the forces, preventing cracks and reducing the risk of structural failure. This reinforcement improves the structure's ability to withstand heavy loads, including the weight of the building, furniture, occupants, and external forces like wind and earthquakes. Additionally, rebars help control and limit the spread of cracks within the concrete. Concrete is strong in compression but weak in tension, so without rebars, it would easily crack under tensile stress. The rebars act as a reinforcement, absorbing some of the tensile forces and preventing the cracks from expanding, thus maintaining the overall strength of the structure. Furthermore, steel rebars enhance the ductility of the structure. Ductility refers to a material's ability to deform without breaking. When a structure experiences excessive loads or external factors cause deformation, the rebars absorb and dissipate the energy, allowing the structure to deform in a controlled manner instead of collapsing suddenly. To sum up, steel rebars significantly improve the load-bearing capacity of a structure by providing tensile strength, preventing crack propagation, and enhancing ductility. By reinforcing the concrete, rebars ensure that the structure can withstand heavy loads, increasing its strength, durability, and overall safety.
- Q: Can steel rebars be used in architectural or decorative concrete applications?
- Yes, steel rebars can be used in architectural or decorative concrete applications. They provide structural reinforcement and enhance the overall strength and durability of the concrete. Additionally, when properly designed and installed, steel rebars can be concealed or incorporated into the design, making them suitable for various aesthetic purposes in architectural or decorative concrete projects.
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GB Standard HRB400 Steel Deformed Bar 28mm/32mm
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT or LC
- Min Order Qty:
- 50 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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