Hot Rolled Deformed Steel Rebars ASTM, GB HRB400Cr, HRB500Cr
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT or LC
- Min Order Qty:
- 100 m.t.
- Supply Capability:
- 200000 m.t./month
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OKorder is offering Hot Rolled Deformed Steel Rebars ASTM, GB HRB400Cr, HRB500Cr 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 African, South American and Asian markets. We provide quotations within 24 hours of receiving an inquiry and guarantee competitive prices.
Product Applications:
Hot Rolled Deformed Steel Rebars ASTM, GB HRB400Cr, HRB500Cr are ideal for structural applications and are widely used in the construction of buildings and bridges, and the manufacturing, petrochemical, and transportation industries.
Product Advantages:
OKorder's Hot Rolled Deformed Steel Rebars ASTM, GB HRB400Cr, HRB500Cr are durable, strong, and wide variety of sizes.
Main Product Features:
· Premium quality
· Prompt delivery & seaworthy packing (30 days after receiving deposit)
· Can be recycled and reused
· Mill test certification
· Professional Service
· Competitive pricing
Product Specifications:
Manufacture: Hot rolled
Grade: HRB400, HRB500 etc
Certificates: ISO, SGS, BV, CIQ
Length: 6m – 12m, as per customer request
Packaging: Export packing, nude packing, bundled
Deformed Steel Bar | ||
Diameter (MM) | Cross Sectional Area (MM2) | Theorectical Weight (KG/M) |
6 | 28.27 | 0.222 |
8 | 50.27 | 0.395 |
10 | 78.54 | 0.617 |
12 | 113.1 | 0.888 |
14 | 153.9 | 1.21 |
16 | 201.1 | 1.58 |
18 | 254.5 | 2 |
20 | 314.2 | 2.47 |
22 | 380.1 | 2.98 |
25 | 490.9 | 3.85 |
28 | 615.8 | 4.83 |
32 | 804.2 | 6.31 |
36 | 1018 | 7.99 |
40 | 1257 | 9.87 |
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 arrange production. The normal sizes with the normal grade can be produced within one month. The specific shipping date is dependent upon international and government factors, the delivery to international main port about 45-60days.
Images:
- Q: Are steel rebars susceptible to hydrogen embrittlement?
- Yes, steel rebars are susceptible to hydrogen embrittlement.
- Q: What is the difference between black and epoxy-coated steel rebars?
- The main difference between black and epoxy-coated steel rebars is the presence of a protective coating on the latter. Black steel rebars are bare steel bars that are susceptible to corrosion, while epoxy-coated steel rebars have a layer of epoxy coating that acts as a barrier against corrosion. This coating provides enhanced durability and longevity to the rebar, making it more suitable for use in environments where corrosion is a concern, such as in coastal areas or concrete structures exposed to chemicals.
- Q: What are the guidelines for protecting steel rebars during concrete pouring?
- Protecting steel rebars during concrete pouring is crucial to ensure the structural integrity and longevity of reinforced concrete structures. The following guidelines should be followed: 1. Clean the rebars: Before pouring concrete, it is essential to clean the rebars thoroughly to remove any dirt, rust, or other contaminants. This can be done using wire brushes or power tools to achieve a clean and smooth surface. 2. Rust prevention: Apply an appropriate rust inhibitor or anti-corrosion coating to the rebars after cleaning. This will help protect the steel from corrosion caused by moisture or chemicals present in the concrete. 3. Proper placement: Ensure that the rebars are placed at the correct depth and spacing as specified in the structural drawings or design codes. This will provide the necessary reinforcement and structural strength to the concrete. 4. Support and alignment: Use proper supports, such as chairs or spacer blocks, to maintain the correct alignment and position of the rebars during the concrete pour. This will prevent any displacement or movement of the rebars. 5. Tie the rebars securely: Use steel wire or rebar ties to secure the rebars together at intersections and overlap areas. This will ensure that the rebars remain in place and maintain the desired structural configuration. 6. Avoid contact with the ground: Prevent the rebars from coming into direct contact with the ground during the pouring process. This can be achieved by using plastic or concrete chairs to elevate the rebars above the ground surface. 7. Use plastic caps: Cover the exposed ends of the rebars with plastic caps to protect them from moisture, dirt, or other contaminants while the concrete cures. 8. Adequate concrete cover: Ensure that the rebars are adequately covered by the concrete. The concrete cover is the distance between the outer surface of the rebars and the nearest outer surface of the concrete. This cover protects the rebars from external elements and prevents corrosion. 9. Monitor concrete placement: During concrete pouring, take precautions to avoid displacing or damaging the rebars. This can be achieved by using proper pouring techniques, such as using a tremie pipe or a concrete pump, to minimize the impact on the rebars. 10. Curing and protection: After the concrete is poured, it is crucial to properly cure and protect it. This includes covering the concrete with wet burlap or plastic sheeting to maintain moisture levels and prevent premature drying, cracking, or shrinkage. Adequate curing will also help in protecting the rebars from corrosion. By following these guidelines, the rebars can be effectively protected during concrete pouring, ensuring the durability and strength of the reinforced concrete structure.
- Q: What are the guidelines for storing steel rebars on a construction site?
- The guidelines for storing steel rebars on a construction site typically include keeping them off the ground to prevent rust and corrosion, stacking them neatly and securely to avoid accidents, and protecting them from exposure to moisture and other harmful elements. It is also important to separate different sizes and types of rebars to ensure easy identification and accessibility when needed.
- Q: What is the effect of impurities on the corrosion resistance of steel rebars?
- The corrosion resistance of steel rebars can be significantly affected by impurities. Steel rebars consist primarily of iron and carbon, but varying amounts of impurities like sulfur, phosphorus, and silicon can also be present. One common impurity found in steel is sulfur. When sulfur reacts with water and oxygen, it forms sulfuric acid, which accelerates the corrosion process. This acid attack can cause rebars to deteriorate faster, reducing their overall strength and durability. Another impurity, phosphorus, can have a negative impact on the corrosion resistance of steel rebars. It can promote the formation of localized corrosion sites called pitting, which can lead to the development of rust and eventual structural damage. Although silicon is generally considered beneficial in steel production, excessive amounts can have adverse effects. Higher levels of silicon in rebars can result in the formation of a protective oxide layer. However, this layer can sometimes be porous, allowing corrosive agents to penetrate and cause corrosion. In conclusion, the presence of impurities in steel rebars can compromise their corrosion resistance. It is essential to ensure that construction steel meets specified standards and has minimal impurities. Additionally, proper maintenance and regular inspection of rebars are crucial to identify and address potential corrosion issues before they cause significant damage or structural failures.
- Q: What is the process of inspecting steel rebars for quality control?
- The process of inspecting steel rebars for quality control involves several steps to ensure that the rebars meet the required standards and specifications. Here is a general overview of the process: 1. Visual Inspection: The first step is to visually inspect the rebars for any visible defects such as cracks, surface imperfections, or irregularities in shape or size. This can be done manually or using automated systems that detect defects through image processing techniques. 2. Measurement and Dimensional Inspection: The rebars are then measured for their dimensions, including length, diameter, and shape. This is typically done using calibrated measuring instruments such as calipers, gauges, or laser-based devices. The measurements are compared against the specified tolerances to ensure compliance. 3. Chemical Analysis: A sample of rebars is taken and subjected to chemical analysis to determine the composition of the steel. This includes measuring the levels of carbon, manganese, sulfur, phosphorus, and other elements. The results are compared against the required chemical composition specified in the standards. 4. Mechanical Testing: Mechanical properties such as tensile strength, yield strength, elongation, and bendability are crucial for rebars used in construction. Samples are taken from the batch and tested in a laboratory using standardized tests, such as tensile testing machines, to ensure they meet the specified requirements. 5. Corrosion Resistance Testing: Rebars are often exposed to harsh environmental conditions, so it is important to assess their resistance to corrosion. This can be done through tests like salt spray testing or electrochemical methods to measure the rebars' corrosion resistance and ensure they will maintain their strength over time. 6. Weldability Testing: If rebars are intended for welding applications, their weldability is assessed. This includes evaluating the rebars' ability to form a strong and sound weld joint without any defects. Weldability tests may involve visual inspection, bend tests, or even destructive testing of welded samples. 7. Documentation and Certification: Throughout the inspection process, detailed records of all measurements, test results, and observations are documented. If the rebars pass all quality control tests, a certification or quality control report is issued, indicating that the rebars meet the required standards and specifications. It is worth noting that the specific inspection procedures may vary depending on the applicable standards, project requirements, and the type of rebar being inspected. Additionally, these inspections can be conducted by internal quality control teams or independent third-party inspection agencies to ensure impartiality and accuracy of the results.
- Q: Can steel rebars be used in foundations and footings?
- Yes, steel rebars can certainly be used in foundations and footings. In fact, they are commonly used in these applications due to their high tensile strength and durability. Steel rebars, which are typically made of carbon steel, are used to reinforce concrete structures and enhance their resistance to tension and bending forces. The rebars are placed within the concrete to provide additional strength and prevent cracking or failure under heavy loads. Therefore, using steel rebars in foundations and footings is a standard practice in construction to ensure the stability and longevity of the structure.
- Q: How do steel rebars affect the overall fire rating of a building?
- Steel rebars can have a positive impact on the overall fire rating of a building. By reinforcing concrete structures, rebars can help enhance the fire resistance of the building. Steel has high melting and ignition temperatures, which means it can withstand heat and maintain its structural integrity for longer periods during a fire. This additional durability provided by rebars can help prevent structural collapse, allowing occupants more time to evacuate safely and aiding firefighters in their efforts to suppress the fire.
- Q: How do steel rebars impact the overall aesthetics of concrete structures?
- Steel rebars can have a negative impact on the overall aesthetics of concrete structures as they can be visible through the surface, leading to a less visually appealing appearance.
- Q: How are steel rebars used in swimming pool construction?
- Steel rebars are used in swimming pool construction to reinforce the concrete structure of the pool. The rebars provide strength and stability to the pool, preventing cracks and ensuring its durability. They are placed strategically within the pool's foundation and walls to provide structural support and help distribute the weight of the water.
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Hot Rolled Deformed Steel Rebars ASTM, GB HRB400Cr, HRB500Cr
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT or LC
- Min Order Qty:
- 100 m.t.
- Supply Capability:
- 200000 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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