Deformed bars Hot Rolled with Material GB HRB400
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 10000 m.t./month
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Product Description:
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 European, 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..
Label: to be specified by customer, generally, each bundle has 1-2 labels
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 byOKorder.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: Can stainless steel rust?
A2: Stainless does not "rust" as you think of regular steel rusting with a red oxide on the surface that flakes off. If you see red rust it is probably due to some iron particles that have contaminated the surface of the stainless steel and it is these iron particles that are rusting. Look at the source of the rusting and see if you can remove it from the surface.
Q3: What is the normal tolerance of Hot Rolled Mild Steel Angle Beams for Structures and for Buildings?
A3: Normally 3%-5%, but we can also produce the goods according to the customers' requests.
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- Q: How do steel rebars affect the aesthetics of a construction project?
- Steel rebars, being an essential component of reinforced concrete structures, do have an impact on the aesthetics of a construction project. While their primary function is to provide strength and reinforcement to concrete, their presence can influence the overall appearance of the project. One way steel rebars affect aesthetics is through their visibility. In most cases, rebars are left exposed during construction, especially in infrastructure projects such as bridges or parking garages. The exposed steel can create a unique industrial or modern look, which some consider aesthetically pleasing. This raw and utilitarian appearance can be intentionally embraced by architects and designers to achieve a specific aesthetic vision. However, in many architectural projects, especially those involving residential or commercial buildings, the visibility of steel rebars may not be desired. In such cases, rebars are typically concealed within the structure and covered by finishes such as concrete, plaster, or decorative cladding. By doing so, the aesthetics of the construction project can be enhanced, as the focus shifts from the structural elements to the overall design and finishes. Additionally, the placement and arrangement of rebars can also impact aesthetics. In intricate architectural designs, rebars may need to be precisely placed to achieve the desired structural integrity. This can pose challenges for designers as they strive to ensure both functionality and visual appeal. However, with careful planning and coordination, rebars can be strategically positioned to minimize their visual impact and maintain the desired aesthetics of the project. It is worth noting that aesthetics should not compromise the safety and structural integrity of a construction project. While efforts can be made to conceal or minimize the visual impact of steel rebars, their proper installation and adherence to engineering standards must always take precedence. Ultimately, the aesthetic impact of steel rebars on a construction project depends on the project's design intent, architectural style, and the balance between functionality and visual appeal.
- Q: How do steel rebars affect the overall stability of concrete structures?
- The overall stability of concrete structures is greatly enhanced by steel rebars. When steel rebars are added to concrete, its tensile strength is significantly increased, as concrete naturally lacks this property. Although concrete is effective in resisting compressive forces, it is weak when it comes to resisting tensile forces. By incorporating steel rebars into the concrete, the structure becomes more durable and less prone to cracking and deformation. The rebars function as reinforcement by absorbing the tensile stresses caused by external loads or internal forces. When these forces are applied, the concrete transfers the tensile stress to the rebars, which allows them to bear the load. This prevents the concrete from cracking and failing under tension, as the rebars strengthen the structure and distribute the forces more evenly. Furthermore, steel rebars provide stability and maintain the structural integrity of concrete structures in the event of earthquakes or other natural disasters. The rebars assist in resisting the lateral forces generated during seismic events, thereby preventing the structure from collapsing or sustaining significant damage. This is especially crucial in tall buildings or structures subjected to heavy loads, as the presence of rebars ensures the overall stability and safety of the structure. Additionally, steel rebars contribute to the durability and longevity of concrete structures. By inhibiting cracking and reducing the risk of corrosion, the rebars safeguard the concrete from environmental factors such as moisture, chemicals, and temperature fluctuations. This preservation of the structure's integrity over time diminishes the need for frequent repairs or replacements. In conclusion, steel rebars play a vital role in enhancing the overall stability of concrete structures. They provide the necessary tensile strength that concrete lacks, enabling it to withstand external loads and internal forces without cracking or failing. The inclusion of rebars also guarantees structural integrity during seismic events and enhances the durability of the concrete. Ultimately, steel rebars are indispensable components in the construction of strong, secure, and long-lasting concrete structures.
- Q: What are the different methods of connecting steel rebars together?
- The connection of steel rebars can be achieved through various methods, depending on the specific needs of the construction project. Here are some commonly used techniques: 1. Lap Splicing: This method involves overlapping two rebars and securing them together using steel wire or bars. It is a cost-effective approach, although it requires longer rebars. 2. Mechanical Splicing: By using a mechanical coupler such as a sleeve or collar, two rebars can be connected. This method offers a strong and reliable connection and allows for flexibility in rebar positioning. It is faster and more efficient than lap splicing. 3. Welding: Steel rebars can be connected by heating and fusing their ends together using an electric arc. This creates a permanent and robust connection. However, welding demands skilled labor and can be time-consuming and expensive. 4. Threaded Couplers: Similar to mechanical splicing, this method involves threading the ends of rebars and connecting them using a threaded coupler. It provides a reliable connection and is commonly used in larger construction projects. 5. Grout Sleeve Splicing: This technique incorporates a grout-filled sleeve between two rebars to establish a connection. The grout enhances strength and stability, making it suitable for seismic zones or areas requiring high strength and ductility. 6. Reinforcing Bar Couplers (RBC): RBC is a proprietary method that employs a threaded sleeve filled with epoxy resin to connect rebars. It offers high load capacity, ease of installation, and resistance to corrosion. To determine the most appropriate method for connecting steel rebars in a specific construction project, it is crucial to consult structural engineers and adhere to building codes and regulations.
- Q: What are the main characteristics of steel rebars?
- Steel rebars, also referred to as reinforcing bars, are an integral part of construction and engineering projects due to their unique characteristics. To begin with, steel rebars possess exceptional strength and durability. Made primarily from carbon steel, they exhibit high tensile strength, enabling them to withstand heavy loads and stresses without deforming or failing. This strength is crucial in reinforcing concrete structures, enhancing their structural integrity and ability to resist bending, cracking, and shear forces. Another significant characteristic of steel rebars is their resistance to corrosion. Since steel is susceptible to rusting when exposed to moisture and air, rebars are often coated with epoxy or other protective materials to prevent corrosion. This ensures the longevity and durability of reinforced concrete structures, making them suitable for various environments, including marine or high humidity areas. Moreover, steel rebars possess excellent thermal conductivity, allowing them to efficiently disperse heat. This is particularly important in structures that face extreme temperatures or fire hazards. Additionally, their ribbed or deformed surface enhances their bonding properties with concrete, preventing slippage and providing improved structural stability. Furthermore, steel rebars are versatile and can be easily shaped and bent to suit the specific design or specifications of a construction project. They are available in various sizes, lengths, and grades, giving engineers and architects the flexibility to choose the appropriate type of rebar based on the specific load-bearing requirements of the structure. In conclusion, the key characteristics of steel rebars include their strength, durability, corrosion resistance, thermal conductivity, bonding properties, and versatility. These qualities make steel rebars an indispensable component in construction, ensuring the safety, stability, and longevity of reinforced concrete structures.
- Q: What is the difference between carbon steel and stainless steel rebars?
- The main difference between carbon steel and stainless steel rebars lies in their composition and corrosion resistance. Carbon steel rebars are made primarily of iron and carbon, while stainless steel rebars contain iron, chromium, and other alloying elements like nickel and molybdenum. Carbon steel rebars are more susceptible to corrosion compared to stainless steel rebars, especially in environments with high moisture or exposure to chemicals. Stainless steel rebars, on the other hand, have a higher resistance to corrosion due to the presence of chromium, which forms a protective oxide layer on the surface. This makes stainless steel rebars suitable for applications in harsh or corrosive environments, such as marine structures or concrete exposed to chloride ions. Additionally, stainless steel rebars have higher tensile strength and ductility compared to carbon steel rebars. This makes them more suitable for structural applications where high strength and durability are required. Overall, the choice between carbon steel and stainless steel rebars depends on the specific application and the level of corrosion resistance and strength needed.
- Q: Can steel rebars be used in structures with extreme temperature variations?
- Steel rebars can generally be used in structures with extreme temperature variations. Steel has a high melting point and is known for its durability and strength, making it suitable for various construction applications. However, it is important to consider a few factors when using steel rebars in such structures. Firstly, steel has a coefficient of thermal expansion, which means it expands and contracts with temperature changes. This expansion and contraction can potentially cause stress and strain on the structure if not properly accounted for. To address this issue, engineers and architects use various design techniques, such as providing expansion joints or allowing for thermal movement, to accommodate the steel's thermal expansion and prevent damage. Secondly, extreme temperature variations can affect the mechanical properties of steel. When exposed to high temperatures, steel can lose its strength and stiffness, which might compromise the structural integrity. Conversely, low temperatures can lead to embrittlement, making the steel more susceptible to cracking or fracturing. Therefore, it is crucial to choose the appropriate grade and quality of steel rebars that are specifically designed to withstand the expected temperature variations. Furthermore, the type of structure and its intended use should be considered. For instance, in structures where extreme temperature variations are anticipated, such as bridges or buildings in regions with hot summers and cold winters, the design should incorporate thermal insulation or other measures to prevent excessive heat transfer or thermal stress accumulation. In conclusion, steel rebars can be used in structures with extreme temperature variations, but proper considerations must be taken. By accounting for thermal expansion, selecting suitable steel grades, and incorporating design techniques to accommodate temperature changes, the structural integrity and performance can be maintained, ensuring the safety and longevity of the construction.
- Q: What are the different methods of connecting steel rebars together?
- There are several different methods of connecting steel rebars together, depending on the specific requirements of the construction project. Some of the most common methods include: 1. Lap Splicing: This involves overlapping two rebars and then securing them together using steel wire or steel bars. It is a simple and cost-effective method but requires a longer length of rebars. 2. Mechanical Splicing: In this method, a mechanical coupler is used to connect two rebars together. The coupler is usually a sleeve or a collar that is attached to the ends of the rebars, providing a strong and reliable connection. Mechanical splicing is faster and more efficient than lap splicing, and it also allows for flexibility in positioning the rebars. 3. Welding: Welding is another method of connecting steel rebars, where the ends of the rebars are heated and fused together using an electric arc. This creates a strong and permanent connection. However, welding requires skilled labor and can be time-consuming and costly. 4. Threaded Couplers: Threaded couplers are similar to mechanical splicing, but instead of using a sleeve or collar, the rebars are threaded at the ends and then connected using a threaded coupler. This method provides a strong and reliable connection and is often used in larger construction projects. 5. Grout Sleeve Splicing: This method involves placing a grout-filled sleeve between two rebars to create a connection. The grout provides additional strength and stability to the joint. Grout sleeve splicing is commonly used in seismic zones or areas where high strength and ductility are required. 6. Reinforcing Bar Couplers (RBC): RBC is a proprietary method of connecting rebars, where a threaded sleeve is used to connect the rebars. The sleeve is filled with epoxy resin to create a strong bond. RBC offers high load capacity, ease of installation, and resistance to corrosion. It is important to consult with structural engineers and follow building codes and regulations to determine the most appropriate method of connecting steel rebars for a specific construction project.
- Q: How are steel rebars protected during construction?
- Steel rebars are protected during construction through a variety of methods to ensure their longevity and structural integrity. One common method is the use of epoxy coatings or corrosion-resistant paints. These coatings create a barrier between the steel rebar and the external environment, preventing moisture, chemicals, and other corrosive substances from reaching the surface of the steel. Another way rebars are protected is by placing them at the correct depth within the concrete. By ensuring that the rebars are embedded within the concrete at the specified depth, they are shielded from exposure to external elements that could potentially cause corrosion. Additionally, rebars can be protected through the use of concrete covers. Concrete covers are layers of concrete that are placed around the rebars, acting as a physical barrier against external factors. The thickness of the concrete cover is determined based on the environmental conditions and design requirements of the specific construction project. Furthermore, rebars can be protected by implementing proper drainage systems to prevent the accumulation of water around the steel. By ensuring that water is effectively drained away from the rebars, the risk of corrosion is significantly reduced. Regular inspections and maintenance are also crucial in protecting steel rebars during construction. Any signs of corrosion or damage should be promptly addressed and repaired to prevent further degradation. Overall, a combination of epoxy coatings, correct placement within the concrete, concrete covers, drainage systems, and regular maintenance are essential in protecting steel rebars during construction, ensuring their durability and structural integrity for years to come.
- Q: How do steel rebars improve the load-carrying capacity of concrete?
- Steel rebars improve the load-carrying capacity of concrete by providing additional tensile strength. When concrete is subjected to heavy loads or forces, it tends to crack under tension. The inclusion of steel rebars within the concrete helps to counteract this weakness by absorbing the tensile forces and distributing them throughout the structure. This reinforcement enhances the overall durability and structural integrity of the concrete, allowing it to bear heavier loads without failing.
- Q: How do steel rebars affect the durability of a structure?
- Steel rebars have a significant impact on the durability of a structure. These reinforcements, made of high-strength steel, are embedded within concrete to enhance its tensile strength and overall structural integrity. By providing resistance against cracking and flexural stresses, steel rebars help in preventing structural failures and ensuring the long-term durability of the construction. One of the main benefits of using steel rebars is their ability to withstand tension forces. Concrete, although strong in compression, is weak when it comes to tension. When a structure is subjected to loads that cause bending or stretching, the rebars distribute these forces throughout the concrete, preventing it from cracking or breaking apart. This reinforcement improves the overall load-bearing capacity of the structure, making it more resistant to external forces such as earthquakes or heavy winds. Moreover, steel rebars also play a crucial role in preventing corrosion within the structure. Concrete is porous, and over time, moisture can penetrate it, causing the embedded reinforcement to rust. Rusting rebars expand, leading to cracks and weakening the structure. However, using corrosion-resistant rebars, such as epoxy-coated or stainless steel rebars, significantly reduces the risk of corrosion, thus enhancing the durability of the structure. In addition to their mechanical properties, steel rebars also contribute to the durability of a structure in terms of construction speed and long-term maintenance. Compared to other traditional reinforcement materials, rebars are relatively easy to install, reducing construction time and costs. Furthermore, their long lifespan and low maintenance requirements ensure the longevity and durability of the structure over time. In conclusion, steel rebars are essential for ensuring the durability of a structure. Their ability to resist tension forces, prevent cracking, and mitigate the risk of corrosion significantly enhances the structural integrity and longevity of the construction. Incorporating steel rebars into the design and construction process is crucial to creating sturdy, safe, and long-lasting structures.
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Deformed bars Hot Rolled with Material GB HRB400
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 10000 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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