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:What is the difference between steel rebars and steel mesh?
- Steel rebars and steel mesh are both commonly used in construction projects to reinforce concrete structures, but they have some key differences in terms of their design and application. Steel rebars, also known as reinforcing bars, are long, cylindrical steel rods that are typically used to provide tensile strength to concrete structures. These rebars are usually placed in a grid-like pattern within the concrete, and they help to prevent cracking and enhance the overall structural integrity of the concrete. Rebars are available in various sizes, and they are typically used in applications where a high amount of tensile force is expected, such as in columns, beams, and slabs. On the other hand, steel mesh, also known as wire mesh or welded wire fabric, consists of a series of interconnected steel wires that are welded together to form a grid-like pattern. This mesh is usually manufactured in large rolls and can be easily cut or bent to the desired shape. Steel mesh is primarily used to provide both tensile and shear strength to concrete structures. It is often used in applications where a lower amount of tensile force is expected, such as in walls, foundations, and pavements. In terms of installation, steel rebars are typically placed and secured within the concrete formwork before the pouring of concrete. They are usually positioned at specific locations as per the structural design requirements. Steel mesh, on the other hand, is laid on top of the formwork or within the concrete pour itself, providing reinforcement throughout the entire concrete structure. Both steel rebars and steel mesh have their own advantages and disadvantages. Rebars offer greater tensile strength and are ideal for applications where heavy loads or high amounts of force are expected. However, they can be more time-consuming and labor-intensive to install due to their individual placement and tying process. Steel mesh, on the other hand, offers easier and faster installation due to its continuous form, and it is more commonly used in smaller-scale projects or applications where lighter loads are expected. In summary, while both steel rebars and steel mesh serve the purpose of reinforcing concrete structures, they differ in terms of their design, installation method, and application. The choice between rebars and mesh depends on the specific structural requirements, project scale, and load expectations. Consulting with a structural engineer or construction professional is recommended to determine the most suitable reinforcement solution for a particular project.
- Q:How do steel rebars affect the overall cost of maintenance?
- Steel rebars can significantly affect the overall cost of maintenance in several ways. Firstly, the quality and durability of steel rebars play a crucial role in ensuring the structural integrity of buildings and infrastructure. When steel rebars are of high quality and properly installed, they can enhance the strength and longevity of concrete structures, reducing the need for frequent repairs or replacements. This, in turn, lowers the maintenance costs over time. Additionally, steel rebars provide reinforcement to concrete, making structures more resistant to external forces such as seismic activities, heavy loads, and environmental factors like corrosion. By increasing the structural resilience, steel rebars can minimize the likelihood of damage and the subsequent maintenance expenses that would be required to fix or restore the affected areas. Moreover, proper maintenance of steel rebars themselves is essential to prevent corrosion. Without adequate preventive measures like regular inspections, cleaning, and applying protective coatings, rebars can succumb to rust and corrosion, ultimately compromising the structural integrity of the entire concrete structure. Corrosion-related repairs or replacements can be extremely costly and time-consuming, significantly impacting the overall maintenance budget. Lastly, the choice of steel rebars during the construction or renovation phase can also influence maintenance costs. Opting for higher-grade rebars with superior corrosion resistance can initially increase the upfront costs but can substantially reduce the long-term maintenance expenses. Investing in high-quality steel rebars can minimize the need for frequent repairs and replacements, resulting in overall cost savings and improved structural reliability. In conclusion, steel rebars have a direct impact on the overall cost of maintenance. By providing reinforcement and enhancing structural integrity, high-quality rebars can reduce the need for repairs, prevent damage, and improve the durability of concrete structures. However, neglecting proper maintenance of rebars can lead to corrosion issues, which can be expensive to address. Therefore, careful consideration of the quality, installation, and ongoing maintenance of steel rebars is essential to minimize maintenance costs in the long run.
- Q:How do steel rebars contribute to the strength of concrete?
- Steel rebars contribute to the strength of concrete by providing reinforcement and increasing its tensile strength. The rebars are embedded in the concrete, forming a strong bond between the two materials. This helps to distribute the load evenly and prevent cracks or fractures from forming, making the concrete structure more resistant to bending, shearing, and other external forces.
- Q:How to calculate the theory of steel thread?
- Thread: a spirally curved, continuous raised part with a specified cross section on the surface of a cylinder or cone. According to its parent thread shape is divided into cylindrical and conical screw threads; according to their position in the matrix is divided into outer and inner thread, according to the section shape (teeth) divided into triangular thread, rectangular screw, trapezoidal thread, serrated thread and other special shape screw.
- 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: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:Can steel rebars be used in structures with high aesthetic requirements?
- Yes, steel rebars can be used in structures with high aesthetic requirements. While rebars are primarily used for their structural strength and reinforcement purposes, they can also be incorporated into architectural designs to enhance the visual appeal of a structure. With various surface finishes and coatings available, steel rebars can be customized to meet specific aesthetic requirements, ensuring they blend seamlessly with the overall design and aesthetics of the structure.
- Q:What are the guidelines for proper splicing of steel rebars in concrete structures?
- The guidelines for proper splicing of steel rebars in concrete structures are essential to ensure the structural integrity and safety of the building. Here are some key guidelines to follow: 1. Length of Lap Splicing: The length of lap splicing refers to the overlapping distance between two rebars. It is crucial to follow the specified length mentioned in the design plans or structural codes. Typically, the minimum lap length for rebars is specified as a certain multiple of their diameter, such as 40 times the diameter for tension members and 25 times the diameter for compression members. 2. Cleanliness: Before splicing the rebars, the surfaces of the bars must be cleaned thoroughly to remove any rust, scale, dirt, or other contaminants. Proper cleaning ensures a strong bond between the bars during the splicing process. 3. Proper Alignment: The rebars being spliced should be properly aligned to maintain the continuity of the reinforcement. Misalignment can lead to stress concentration, weakening the overall structure. The bars should be aligned in a straight line, ensuring that they are parallel and evenly spaced. 4. Splice Type: There are various types of splice connections available, such as lap splicing, mechanical splicing, and welded splicing. The choice of splice type should be based on the specific project requirements, structural design, and local building codes. 5. Reinforcement Bar Preparation: The rebars need to be prepared before splicing by removing any scale, rust, or other contaminants. This can be done through brushing, grinding, or shot blasting. Additionally, the ends of the rebars should be clean and free of any deformations or irregularities. 6. Testing and Inspection: It is crucial to conduct regular testing and inspection to ensure the quality and integrity of the spliced rebars. Non-destructive testing methods, such as ultrasound or magnetic particle testing, can be employed to check the bond strength and ensure the splicing has been done correctly. 7. Adequate Cover: The spliced rebars must have adequate concrete cover to protect them from corrosion and fire. The thickness of concrete cover should comply with the local building codes and design specifications. 8. Proper Grouting: If mechanical splices are used, it is important to ensure proper grouting or filling of the splice sleeve or coupler with an approved non-shrink grout. This helps in achieving full load transfer and prevents any movement or slippage of the rebars. 9. Documentation: All splicing activities should be properly documented, including the type of splice used, lap lengths, inspection reports, and any deviations from the original design. This documentation is important for future reference, maintenance, and to ensure compliance with regulatory agencies. It is important to note that these guidelines are general recommendations, and specific project requirements and local building codes should always be followed for proper splicing of steel rebars in concrete structures. Consulting with a qualified structural engineer or following the advice of a reputable construction professional is crucial to ensure the highest standards of safety and compliance.
- Q:How are steel rebars cut and shaped on-site?
- Steel rebars are commonly cut and shaped on-site using various tools and techniques. The process typically involves the following steps: 1. Measurement: The rebars are first measured according to the required length and shape. This is done by using measuring tapes, rulers, or other measuring devices. 2. Marking: Once the measurements are taken, the rebars are marked at the appropriate points using chalk or a marker. These marks serve as guidelines for cutting and shaping the rebars accurately. 3. Cutting: The rebars are then cut along the marked lines using mechanical or hydraulic cutting tools. Some commonly used tools for cutting rebars include rebar cutters, angle grinders with cutting discs, or portable band saws. These tools are specifically designed to handle the high strength of steel rebars and ensure clean and precise cuts. 4. Shaping: After the rebars are cut to the desired lengths, they can be further shaped as needed. This shaping process involves bending the rebars into specific angles or curves. Manual rebar benders or electric rebar bending machines are commonly used for this purpose. These tools allow for accurate shaping of the rebars, ensuring they fit the required structural design. 5. Tying: Once the rebars are cut and shaped, they are often tied together using wire or rebar tying machines. This tying process helps to secure the rebars in place and maintain the desired positioning within the concrete structure. It is important to note that the cutting and shaping of rebars on-site require skilled workers who are trained in handling the tools and following proper safety precautions. These workers must also have a good understanding of the structural requirements and be able to interpret construction drawings to accurately cut and shape the rebars according to the project specifications.
- Q:What is the effect of improper handling on the quality of steel rebars?
- Improper handling of steel rebars can have a significant negative effect on their quality. It can lead to various issues such as bending, warping, or damage to the surface of the rebars. This can compromise their structural integrity and reduce their overall strength and durability. Furthermore, improper handling can also introduce contaminants or impurities to the rebars, which can further degrade their quality and potentially lead to corrosion or other long-term damage. Therefore, proper handling techniques are essential to maintain the quality and performance of steel rebars in construction projects.
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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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