GB Standard HRB400 Steel Deformed Bar 22mm/25mm
- 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 22mm/25mm
Description:
-Standard: GB
-Material: HRB400
-Specification:
| Diameter(mm) | Section Area(mm2) | Mass(Kg/m) | Length(m) |
| 22 | 380.1 | 2.98 | 9, 12 or as customs' request |
| 25 | 490.9 | 3.85 | 9, 12 or as customs' request |
Chemical Composition(%) of GB Standard HRB400 Steel Deformed Bar 22mm/25mm:
| 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 22mm/25mm:
Yield Strength (N/cm²) | Tensile Strength (N/cm²) | Elongation (%) |
≥400 | ≥570 | ≥14 |
Usage and Applications of GB Standard HRB400 Steel Deformed Bar 22mm/25mm:
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 22mm/25mm:
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 22mm/25mm:
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- Q: Can steel rebars be used in blast-resistant building construction?
- Yes, steel rebars can be used in blast-resistant building construction. Steel rebars are commonly used in reinforced concrete structures, which can provide significant strength and durability against blast forces. The rebars help to reinforce the concrete and distribute the blast load, making the building more resistant to explosions and enhancing its overall structural integrity.
- Q: Can steel rebars be used in wastewater treatment plant construction?
- Yes, steel rebars can be used in wastewater treatment plant construction. Steel rebars are commonly used for reinforcement in concrete structures, providing strength and durability to withstand the harsh conditions present in wastewater treatment plants.
- Q: How do steel rebars affect the electrical conductivity of a structure?
- Steel rebars do not significantly affect the electrical conductivity of a structure. Steel is a good conductor of electricity, but the presence of steel rebars in a structure does not significantly impact its overall electrical conductivity. This is because the rebars are typically surrounded by concrete, which is a poor conductor of electricity. The concrete acts as an insulator, preventing the flow of electrical current through the rebars. However, it is worth noting that if there are any electrical connections or installations directly attached to the steel rebars, such as grounding systems, these can affect the electrical conductivity within that specific area. Overall, the presence of steel rebars in a structure does not have a significant impact on its overall electrical conductivity.
- Q: What are the guidelines for protecting steel rebars during concrete pouring?
- Some guidelines for protecting steel rebars during concrete pouring include ensuring proper placement and alignment of rebars, using plastic or epoxy-coated rebars to prevent corrosion, providing adequate concrete cover over the rebars, using protective caps on exposed ends, and avoiding over-vibration of the concrete to prevent rebars from shifting. Additionally, it is important to protect rebars from moisture and contamination during storage and construction, and to follow industry standards and specifications for reinforcement placement and protection.
- Q: What are the guidelines for preventing steel rebars from rusting during construction delays?
- To prevent steel rebars from rusting during construction delays, the following guidelines can be followed: 1. Store rebars in a clean, dry, and covered area to protect them from moisture and rain. 2. Use plastic or waterproof covers to shield rebars from direct contact with water or humidity. 3. Avoid stacking rebars directly on the ground to prevent them from absorbing moisture. 4. Apply a rust inhibitor or coating to the rebars to provide an additional layer of protection. 5. Regularly inspect the rebars during the construction delay to ensure they remain dry and rust-free. 6. If any signs of rust appear, remove the affected rebars and replace them with new ones. 7. Properly seal any concrete structures or foundations that contain rebars to prevent moisture penetration. 8. Keep the construction site clean, avoiding the accumulation of water or debris that could promote rust formation. By following these guidelines, construction delays can be managed effectively, minimizing the risk of rusting and ensuring the structural integrity of the steel rebars.
- Q: Can steel rebars be used in reinforced masonry walls?
- Yes, steel rebars can be used in reinforced masonry walls. In fact, using steel rebars is a common practice in constructing reinforced masonry walls to enhance their strength and durability. The rebars are typically embedded within the mortar joints between the masonry units, such as bricks or concrete blocks. The steel rebars help to distribute the tensile forces that may occur in the masonry wall due to external loads or structural movements, as masonry materials are primarily strong in compression but weak in tension. By adding steel rebars, the reinforced masonry walls can better resist lateral forces, such as wind or seismic loads, and prevent cracking or structural failures. Additionally, the use of steel rebars can also increase the overall stability and load-bearing capacity of the masonry wall, making it suitable for a wide range of construction projects.
- Q: What are the different methods for attaching steel rebars to existing structures?
- There are several methods for attaching steel rebars to existing structures, depending on the specific requirements and conditions of the project. Some common methods include: 1. Welding: This method involves using welding techniques to attach the rebars to the existing structure. It provides a strong and durable connection, but it requires skilled labor and may not be suitable for all situations. 2. Epoxy bonding: Epoxy adhesives can be used to bond rebars to existing structures. This method is easy to apply and provides a reliable connection, especially when the rebars are embedded in concrete. However, it is important to ensure proper surface preparation and follow manufacturer's instructions for best results. 3. Mechanical anchoring: Mechanical anchors, such as anchor bolts or expansion anchors, can be used to attach rebars to existing structures. This method involves drilling holes into the structure and inserting the anchor, which provides a secure connection. It is important to select the appropriate anchor type and size based on the load requirements and structural conditions. 4. Clamping or fastening: In some cases, rebars can be attached to existing structures using clamps or fasteners. This method is relatively quick and easy to install, but it may not provide as strong of a connection as welding or epoxy bonding. 5. Overlapping: When reinforcing existing concrete structures, rebars can be overlapped with the existing reinforcement and tied together using wire or other methods. This method is commonly used in construction to ensure continuity of reinforcement and increase the load-carrying capacity. It is important to consult with structural engineers or professionals with expertise in rebar installation to determine the most suitable method for attaching steel rebars to existing structures. They will consider factors such as structural integrity, load requirements, and local building codes to ensure a safe and effective connection.
- Q: Can steel rebars be used in high-temperature environments?
- No, steel rebars are not typically recommended for use in high-temperature environments as they can lose their strength and structural integrity at elevated temperatures, potentially leading to failures or structural issues.
- Q: How do steel rebars impact the durability of concrete structures?
- The durability of concrete structures is significantly influenced by steel rebars. Adding steel rebars improves the strength and overall performance of concrete, making it more resistant to various external forces and extending its lifespan. To begin with, steel rebars offer structural reinforcement to concrete structures. Concrete has relatively low tensile strength, making it susceptible to cracking and failure under tensile stresses. By incorporating steel rebars into the concrete, these stresses are effectively distributed throughout the structure, preventing the formation of cracks and enhancing its load-bearing capacity. This reinforcement ensures that the concrete structure can withstand the forces it experiences, whether from gravity, wind, earthquakes, or other external factors. Additionally, steel rebars play a vital role in corrosion prevention in concrete structures. Concrete is highly alkaline, creating a protective environment for embedded steel. However, factors like moisture exposure, chloride ions, and carbonation can break down this protective layer over time, leading to steel corrosion. Corrosion weakens the rebars and causes the surrounding concrete to crack and spall, compromising the structure's durability. By using steel rebars with appropriate coatings or stainless steel, the risk of corrosion is significantly reduced, enhancing the structure's longevity and durability. Furthermore, steel rebars contribute to the durability of concrete structures by providing dimensional stability. Concrete tends to shrink and expand due to temperature and moisture changes, which can result in cracking and deformation. Incorporating steel rebars helps minimize these movements by providing restraint and stabilizing the structure, preventing excessive cracking and maintaining its integrity over time. In conclusion, steel rebars play a crucial role in enhancing the durability of concrete structures. They provide structural reinforcement, prevent corrosion, and ensure dimensional stability. By incorporating steel rebars into concrete, structures become stronger, more resistant to external forces, and have an extended lifespan. This ultimately leads to safer and more durable buildings and infrastructure.
- Q: What are the different shapes and forms of steel rebars available?
- There are several different shapes and forms of steel rebars available, each designed for specific applications and requirements in construction projects. 1. Plain round bars: These are the most common type of steel rebars and have a circular cross-section. They are used in a wide range of applications, including general construction, reinforcement in concrete slabs, and foundation works. 2. Deformed bars: These rebars have protrusions or deformations on their surface to provide better adhesion with concrete. The deformations increase the bond strength between the rebar and the concrete, making them suitable for applications that require high tensile strength, such as columns, beams, and retaining walls. 3. Square bars: As the name suggests, square rebars have a square cross-section. They are commonly used in applications where a strong bond with concrete is required, such as in precast concrete elements, footings, and walls. 4. Rectangular bars: Rectangular rebars have a rectangular cross-section and are often used in applications that require higher tensile strength, such as bridges, tunnels, and heavy structural elements. 5. Welded wire fabric (WWF): WWF is a prefabricated reinforcement material that consists of a series of longitudinal and transverse wires welded together to form a grid-like pattern. It is commonly used in slabs, walls, and pavements, providing uniform reinforcement distribution. 6. Dowel bars: Dowel bars are used to transfer loads between two adjacent concrete elements, such as connecting slabs or pavements. They are typically made of smooth round bars and are inserted into drilled holes with epoxy adhesive for improved load transfer. 7. T-shaped bars: T-shaped rebars have a T-like cross-section, with a stem and a flange. They are commonly used in applications where additional reinforcement is needed at specific locations, such as joints, corners, and connections. It is important to consider the specific requirements of the construction project and consult with structural engineers or professionals to determine the appropriate shape and form of steel rebars to ensure optimal reinforcement and structural integrity.
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GB Standard HRB400 Steel Deformed Bar 22mm/25mm
- 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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