Hot Rolled Rebars with High Quality and Best Price
- 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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Quality Product, Order Online Tracking, Timely Delivery
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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: 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: How soon can we receive the product after purchase?
A3: Within three days of placing an order, we will begin production. The specific shipping date is dependent upon international and government factors, but is typically 7 to 10 workdays.
Images:
- Q: What is the weight of a standard steel rebar?
- The weight of a standard steel rebar can vary depending on its size and length.
- Q: What is the difference between hot-rolled and cold-worked steel rebars?
- The main difference between hot-rolled and cold-worked steel rebars lies in the manufacturing process. Hot-rolled steel rebars are produced by heating the steel billets to high temperatures and then passing them through rolling mills to create the desired shape and size. This process results in a rougher surface and higher yield strength compared to cold-worked steel rebars. On the other hand, cold-worked steel rebars are made by subjecting the hot-rolled steel bars to additional processing steps, such as cold drawing or cold rolling. This process enhances the mechanical properties of the steel, including improved tensile strength, dimensional accuracy, and a smoother surface finish. In summary, hot-rolled steel rebars are formed through high-temperature rolling, while cold-worked steel rebars undergo additional steps to further refine their properties, resulting in a smoother surface and improved mechanical strength.
- Q: What are the common problems associated with steel rebars in concrete structures?
- Steel rebars in concrete structures can encounter numerous issues, including corrosion, inadequate cover, improper placement, and improper anchorage. Corrosion is a major concern as it weakens rebars when they are exposed to moisture and oxygen, particularly in coastal areas or regions with high humidity. This can lead to structural deterioration and reduced load-bearing capacity. Insufficient concrete cover over rebars, known as inadequate cover, is another problem. This can arise from construction practices or design errors. Inadequate cover increases the risk of corrosion as the rebars are exposed to external elements. It can also compromise the concrete's structural integrity, especially in terms of fire resistance and durability. Improper placement of rebars can also cause issues. If they are not aligned or spaced correctly according to design specifications, weak sections can form within the concrete. This can lead to uneven load distribution and potential structural failure. It can also diminish the effectiveness of rebars in reinforcing the concrete, compromising the overall strength of the structure. Improper anchorage of rebars is a common problem as well. Adequate anchorage is crucial for transferring loads between different sections of the concrete structure. If rebars are not properly anchored, they may slip or pull out under stress, reducing the structural strength and stability of the concrete. To address these problems, it is vital to implement proper construction practices and adhere to design specifications. This includes ensuring sufficient concrete cover, accurate placement and alignment of rebars, proper anchorage, and the use of corrosion-resistant rebars or protective coatings in corrosive environments. Regular inspections and maintenance are also necessary to detect and address any potential issues with steel rebars in concrete structures.
- Q: What are the factors that determine the selection of steel rebars?
- There are several factors that determine the selection of steel rebars for construction projects. One of the most important factors is the required strength and durability of the structure. Different grades of steel rebars have different yield strengths, which indicate the maximum amount of stress the rebar can withstand before it begins to deform. The design of the structure and the load it will bear will determine the required strength of the rebars. Another factor is the corrosion resistance of the rebars. Steel rebars are susceptible to corrosion, especially when exposed to moisture and other environmental factors. In areas with high humidity or near coastal regions, corrosion-resistant rebars may be required to ensure the longevity and structural integrity of the project. The size and shape of the rebars also play a role in their selection. The diameter of the rebar is determined by the structural requirements and the concrete cover thickness. The shape of the rebar, whether it is plain, deformed, or ribbed, also affects its bonding with the surrounding concrete. The availability and cost of the rebars are important factors as well. Some grades or types of steel rebars may be more readily available in certain regions, while others may need to be imported. The cost of the rebars will also influence the selection, as different grades and types may have varying price points. Lastly, the specifications and requirements set by local building codes and regulations must be considered. These codes often dictate the minimum standards for strength, corrosion resistance, and other factors that must be met by the rebars used in construction. Overall, the factors that determine the selection of steel rebars include required strength, corrosion resistance, size and shape, availability and cost, and compliance with local building codes and regulations. By considering these factors, engineers and construction professionals can select the most suitable rebars for their projects to ensure safety, durability, and cost-effectiveness.
- Q: What are the different grades of steel rebars available?
- In the market, there are various grades of steel rebars available, each with its own specific characteristics and applications. The commonly used grades are as follows: 1. Grade 40: This rebar has low strength and is suitable for general construction purposes where high tensile strength is not necessary. It is commonly utilized in residential buildings, sidewalks, and driveways. 2. Grade 60: Offering higher tensile strength than Grade 40, this rebar is of medium strength. It finds wide usage in commercial buildings, bridges, and infrastructure projects. Grade 60 rebar provides excellent reinforcement for heavy loads and ensures structural stability. 3. Grade 75: With exceptional tensile strength, this rebar is of high strength and is often employed in challenging construction projects. It is commonly used in high-rise buildings, parking garages, and industrial structures to ensure superior reinforcement and structural integrity. 4. Grade 80 and higher: These rebars are designed for specialized applications where extreme load-bearing capacity is required. They are commonly used in heavy-duty infrastructure projects, such as dams, tunnels, and nuclear power plants, where the demand for strength is significantly greater. The selection of the grade of steel rebar depends on factors such as the specific construction project, load-bearing requirements, and environmental conditions. Engineers and architects assess these factors to determine the most suitable grade of steel rebar for a particular application, ensuring optimal performance and structural durability.
- Q: What are the different types of supports used for steel rebars in formwork?
- There are several different types of supports that can be used for steel rebars in formwork. Some common examples include chairs, spacers, bolsters, and hangers. These supports are designed to provide stability and ensure proper positioning of the rebars during concrete pouring and curing processes.
- Q: Are there any environmental concerns related to the production of steel rebars?
- Yes, there are several environmental concerns related to the production of steel rebars. One major concern is the high carbon emissions associated with the steel production process, which contributes to climate change. Additionally, the extraction and processing of raw materials for steel rebars, such as iron ore and coal, can lead to deforestation, habitat destruction, and air and water pollution. Proper waste management and recycling of steel scrap are also important considerations to minimize the environmental impact of steel rebar production.
- Q: What is the process of installing steel rebars in slabs and beams?
- The process of installing steel rebars in slabs and beams involves several steps to ensure proper reinforcement of the concrete structure. 1. Design and engineering: Before starting the installation process, the structural engineer designs the reinforcement layout based on the specific requirements of the project. This design considers factors such as load-bearing capacity, span length, and structural integrity. 2. Marking and layout: Once the design is finalized, the layout is marked on the slab or beam using chalk lines or other appropriate methods. This helps guide the installation process and maintain accuracy. 3. Cutting and bending rebars: Steel rebars are usually delivered in long lengths and need to be cut and bent according to the specific dimensions and angles required by the design. This process is done using specialized tools like rebar cutters and benders. 4. Placement and support: After the rebars are cut and bent, they are placed in the marked positions on the slab or beam. The rebars are supported using rebar chairs, spacers, or other suitable devices to ensure they remain in the correct position during the pouring of concrete. 5. Tying and securing: Once the rebars are correctly positioned, they are tied together using wire or other appropriate binding material. This ensures the rebars remain in their designated spots and maintain proper spacing and alignment. 6. Inspection and approval: After the rebars are installed, an inspection is carried out to verify that they meet the design specifications and are properly positioned. This inspection is usually performed by a qualified engineer or inspector who checks for compliance with building codes and standards. 7. Concrete pouring: After the rebars are inspected and approved, the concrete is poured over the reinforced area. The rebars act as reinforcement, providing added strength and stability to the structure. 8. Curing and finishing: Once the concrete is poured, it needs to cure and harden over a specific period. During this time, it is essential to protect the newly installed rebars and concrete from excessive moisture and temperature fluctuations. After curing, finishing processes such as leveling, smoothing, and surface treatments may be carried out to achieve the desired appearance and functionality. Overall, the process of installing steel rebars in slabs and beams involves careful planning, precise cutting and bending, accurate placement, proper securing, and thorough inspection to ensure a reinforced structure that meets design requirements and provides long-lasting strength and durability.
- 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 cost implications of using steel rebars in construction?
- The cost implications associated with the use of steel rebars in construction can vary based on multiple factors. To begin with, the overall construction budget can be affected by the cost of steel rebars themselves. The price of steel rebars can fluctuate due to factors such as global demand, availability of raw materials, and market conditions. Consequently, the cost of steel rebars can differ from one project to another. Furthermore, the quantity of steel rebars required for a construction project will also impact the cost implications. The size, complexity, and load-bearing requirements of the structure will determine the amount of steel rebars needed. Consequently, larger and more intricate projects will necessitate a greater quantity of steel rebars, resulting in increased overall construction costs. Moreover, it is important to consider the installation and labor costs associated with steel rebars. The proper installation and securing of rebars require experienced and skilled labor to ensure structural integrity. The cost of labor can vary depending on the location, availability of skilled workers, and project timeline. Additionally, the handling and cutting of steel rebars may require equipment and tools that can incur additional expenses. Additionally, the long-term cost implications of steel rebars' longevity and durability should be taken into account. Steel is known for its strength, resistance to corrosion, and ability to withstand harsh environmental conditions. By utilizing steel rebars, structures can have a longer lifespan and require less maintenance and repairs over time. This can result in significant cost savings in terms of maintenance and replacement expenses. However, it is also crucial to consider potential cost implications related to sustainability and environmental impact. The production of steel rebars requires substantial energy and resources, which can contribute to carbon emissions and environmental degradation. In some cases, alternative construction materials or methods may provide more cost-effective solutions in terms of sustainability and long-term environmental considerations. In conclusion, the cost implications of using steel rebars in construction are influenced by factors such as the price of steel, the quantity required, labor costs, installation expenses, and long-term durability. While steel rebars offer numerous benefits in terms of strength and longevity, it is essential to consider the specific requirements of the project and balance them with potential economic and sustainability considerations.
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Hot Rolled Rebars with High Quality and Best Price
- 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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