Reinforcing Deformed Steel Bars with Grade HRB400-HRB500
- 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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Specification
OKorder is offering high quality Hot Rolled Rebars at great prices with worldwide shipping. Our supplier is a world-class manufacturer of steel, with our products utilized the world over. OKorder annually supplies products to Africa, North American and Asian markets. We provide quotations within 24 hours of receiving an inquiry and guarantee competitive prices.
Product Applications:
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.
Product Advantages:
OKorder's Hot Rolled Rebars are durable, strong, and resist corrosion.
Main Product Features:
· Premium quality
· Prompt delivery & seaworthy packing (30 days after receiving deposit)
· Corrosion resistance
· Can be recycled and reused
· Mill test certification
· Professional Service
· Competitive pricing
Product Specifications:
Manufacture: Hot rolled
Grade: HRB400 – HRB500
Certificates: ISO, SGS, BV, CIQ
Length: 6m – 12m, as per customer request
Packaging: Export packing, nude packing, bundled
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 | |
Physical capability | |||||||
Yield 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) |
6 | 28.27 | 0.222 | 2.664 |
8 | 50.27 | 0.395 | 4.74 |
10 | 78.54 | 0.617 | 7.404 |
12 | 113.1 | 0.888 | 10.656 |
14 | 153.9 | 1.21 | 14.52 |
16 | 201.1 | 1.58 | 18.96 |
18 | 254.5 | 2.00 | 24 |
20 | 314.2 | 2.47 | 29.64 |
22 | 380.1 | 2.98 | 35.76 |
25 | 490.9 | 3.85 | 46.2 |
28 | 615.8 | 4.83 | 57.96 |
32 | 804.2 | 6.31 | 75.72 |
36 | 1018 | 7.99 | 98.88 |
40 | 1257 | 9.87 | 118.44 |
50 | 1964 | 15.42 | 185.04 |
FAQ:
Q1: Why buy Materials & Equipment from OKorder.com?
A1: All products offered by OKorder.com are carefully selected from China's most reliable manufacturing enterprises. Through its ISO certifications, OKorder.com adheres to the highest standards and a commitment to supply chain safety and customer satisfaction.
Q2: How do we guarantee the quality of our products?
A2: We have established an advanced quality management system which conducts strict quality tests at every step, from raw materials to the final product. At the same time, we provide extensive follow-up service assurances as required.
Q3: Can you offer the third part inspection certificates ?
A3: Yes, we can apply third part inspection before shipping, such as SGS, BV, etc .
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- 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: What is the effect of exposure to saltwater on steel rebars?
- Exposure to saltwater can have a detrimental effect on steel rebars, as it can lead to corrosion and rusting. The saltwater acts as an electrolyte, facilitating the electrochemical reactions that cause the steel rebars to deteriorate over time. This corrosion weakens the structural integrity of the rebars, potentially compromising the overall strength and stability of the concrete or structure they are embedded in.
- Q: What is the role of steel rebars in minimizing creep deformation in concrete?
- The role of steel rebars in minimizing creep deformation in concrete is to provide added strength and stiffness to the structure. By reinforcing the concrete with steel rebars, it helps to resist the long-term deformation caused by creep, which is the gradual deformation that occurs under sustained load over time. The rebars act as a reinforcement, reducing the amount of deformation that the concrete experiences and enhancing its ability to withstand long-term loads without significant creep.
- Q: What is the effect of aging on the properties of steel rebars?
- The effect of aging on the properties of steel rebars can have both positive and negative impacts. Over time, steel rebars undergo a process called aging, which involves gradual changes in their microstructure and mechanical properties. One of the primary effects of aging on steel rebars is the increase in strength and hardness. As the steel rebars age, the carbon atoms within the steel begin to form carbides, which leads to an increase in strength. This increased strength can be beneficial in structural applications, as it provides additional support and resistance to external forces and loads. However, aging can also have negative effects on steel rebars. As the rebars age, they become more susceptible to corrosion. The formation of carbides during aging can create localized areas of low carbon content, known as decarburization, which makes the rebars more prone to rust and corrosion. This can compromise the structural integrity of the rebars and reduce their lifespan. Furthermore, aging can lead to embrittlement of the steel rebars. As the rebars age, the microstructure undergoes changes that can result in increased brittleness and reduced ductility. This can make the rebars more prone to cracking and failure under certain conditions, such as when exposed to excessive loads or extreme temperatures. Overall, the effect of aging on the properties of steel rebars is a complex phenomenon that involves both positive and negative consequences. While aging can enhance the strength and hardness of the rebars, it also increases the risk of corrosion and embrittlement. Proper maintenance and monitoring are essential to mitigate the negative effects of aging and ensure the long-term performance and durability of steel rebars in structural applications.
- Q: Can steel rebars be used in the rehabilitation of existing structures?
- Yes, steel rebars can be used in the rehabilitation of existing structures. Steel rebars are commonly used to reinforce and strengthen concrete structures, making them ideal for the rehabilitation and repair of existing buildings. By adding steel rebars to the existing structure, the load-bearing capacity and overall strength of the building can be improved, ensuring its safety and longevity.
- Q: What is the role of steel rebars in preventing cracks in concrete structures?
- Steel rebars play a crucial role in preventing cracks in concrete structures by providing reinforcement and enhancing the overall strength and durability of the concrete. When concrete is poured, it is initially strong in compression but weak in tension. This means that concrete can withstand forces that push or compress it, but it is prone to cracking when subjected to pulling or tension forces. To counteract this weakness, steel rebars are embedded within the concrete. These rebars act as a framework, distributing and absorbing tensile forces that would otherwise cause cracks in the concrete. When the concrete experiences tension, the rebars bear the load and help redistribute the forces, preventing cracks from forming or spreading. The steel rebars also enhance the structural integrity of the concrete by increasing its resistance to bending, shear, and other types of stress. This reinforcement is particularly important in large concrete structures such as buildings, bridges, and dams, as it helps to ensure their stability and longevity. Additionally, steel rebars also play a critical role in preventing cracks in concrete due to temperature changes and shrinkage. Concrete tends to expand and contract with temperature fluctuations, and this can lead to cracking if not properly controlled. Steel rebars help to control these movements by providing restraint and minimizing the potential for cracks. Overall, the presence of steel rebars in concrete structures significantly improves their ability to resist cracking. They reinforce the concrete, enhance its tensile strength, and help distribute and control forces that may cause cracks. By effectively preventing cracks, steel rebars contribute to the long-term durability and safety of concrete structures.
- Q: How are steel rebars anchored into concrete?
- Steel rebars are anchored into concrete using various methods to ensure that they are securely fixed in place. One common method is by using mechanical anchors, such as anchor bolts or anchor plates. These mechanical anchors are inserted into the concrete before it sets, and the rebars are then attached to them using nuts, washers, or other fastening devices. This method provides a strong and reliable connection between the rebars and the concrete. Another method used for anchoring rebars into concrete is by using epoxy or adhesive anchors. In this method, a special epoxy or adhesive is applied to the rebars and then inserted into pre-drilled holes in the concrete. The epoxy or adhesive hardens and creates a strong bond between the rebars and the concrete, ensuring that they are securely anchored. Additionally, rebars can also be anchored into concrete by using mechanical couplers. These couplers are used to connect two rebars together, creating a continuous reinforcement. The couplers are installed by threading the rebars into the coupler and then tightening them together using wrenches or other tools. This method provides a seamless connection between the rebars and eliminates the need for overlapping or lapping of rebars, saving time and material. Overall, the anchoring of steel rebars into concrete is a crucial step in the construction process. It ensures that the rebars provide the necessary reinforcement and structural integrity to the concrete structure. The choice of anchoring method depends on various factors such as the specific requirements of the project, the load capacity needed, and the design specifications.
- Q: What is the process of pre-stressing steel rebars?
- The process of pre-stressing steel rebars involves applying a predetermined amount of stress or force to the rebar before it is placed in concrete. This is typically done by stretching the rebar using hydraulic jacks or other mechanical means. The purpose of pre-stressing is to introduce a compressive force in the rebar, which helps counteract the tensile forces that the concrete will exert on the structure. This technique enhances the strength and durability of the concrete structure, making it more resistant to cracking and deformation under load.
- Q: What is the average lifespan of steel rebars in concrete structures?
- The average lifespan of steel rebars in concrete structures can vary depending on various factors such as the quality of the steel, environmental conditions, and maintenance practices. However, under normal conditions, steel rebars in concrete structures are expected to have a lifespan of around 50 to 100 years.
- Q: How are steel rebars used in the construction of dams?
- Steel rebars are indispensable in the construction of dams as they provide strength and stability to the structure. Dams are massive concrete structures that are built to impound water and create reservoirs for various purposes such as hydroelectric power generation, irrigation, and flood control. Steel rebars, also known as reinforcing bars, are used in dams to reinforce the concrete and increase its tensile strength. While concrete is excellent in compression, it is relatively weak in tension. This is where steel rebars come into play. They are strategically placed within the concrete structure to counteract the tensile forces that could cause cracks or failure. In the construction of dams, steel rebars are typically embedded in the concrete in a crisscross pattern, forming a network of reinforcement. This configuration helps to distribute the load evenly and resist the immense pressure exerted by the water behind the dam. By reinforcing the concrete, steel rebars ensure that the dam can withstand the forces acting upon it, such as the weight of the water, the water pressure, and external factors like earthquakes. Furthermore, steel rebars also help to prevent the propagation of cracks within the concrete. In the event of small cracks occurring due to environmental factors or settlement, the rebars act as a barrier, preventing the cracks from expanding and compromising the dam's structural integrity. Steel rebars used in dam construction must meet certain standards and specifications to ensure their strength and durability. They are typically made from high-strength steel, capable of withstanding the immense pressures and forces encountered in dam construction. In summary, steel rebars play a crucial role in the construction of dams by reinforcing the concrete and providing the necessary strength and stability. Their strategic placement and configuration help to distribute the load, resist tension, and prevent the propagation of cracks, ensuring the dam's structural integrity and reliability.
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Reinforcing Deformed Steel Bars with Grade HRB400-HRB500
- 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
OKorder Financial Service
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