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 are steel rebars affected by long-term exposure to water?
- Steel rebars are susceptible to corrosion when exposed to water for a prolonged period. The presence of moisture and oxygen initiates an electrochemical reaction, causing the steel to rust and gradually weaken over time. This can compromise the structural integrity of the rebars and the surrounding concrete, leading to potential structural failure if not addressed.
- Q: What are the factors to consider while selecting steel rebars for a project?
- When selecting steel rebars for a project, there are several factors that need to be considered. Firstly, the grade of the steel rebar is important as it indicates the strength and durability of the material. The specific requirements of the project, such as structural load capacity and corrosion resistance, should also be taken into account. Another factor to consider is the size and shape of the rebars, as they need to be compatible with the design and construction techniques being used. Additionally, the supplier's reputation, certifications, and quality control processes should be considered to ensure the reliability and consistency of the steel rebars.
- Q: How do steel rebars enhance the bond between concrete and reinforcement?
- Steel rebars enhance the bond between concrete and reinforcement by providing a mechanical interlock between the two materials. The ribs on the surface of rebars increase the surface area, allowing for greater adhesion and friction between the concrete and steel. This increased bond strength helps to transfer loads and stresses between the concrete and reinforcement, making the structure more durable and resistant to cracking or failure.
- Q: What are the international standards for steel rebars?
- Various organizations and bodies, such as the International Organization for Standardization (ISO), the American Society for Testing and Materials (ASTM), and the European Committee for Standardization (CEN), set the international standards for steel rebars. ISO establishes standards for steel rebars through ISO 15630, which covers both hot-rolled and cold-worked rebars. This standard outlines the requirements for the chemical composition, mechanical properties, dimensions, and tolerances of rebars used in reinforced concrete structures. ASTM has developed multiple standards for steel rebars, such as ASTM A615/A615M and ASTM A706/A706M. ASTM A615/A615M focuses on deformed and plain carbon-steel rebars for concrete reinforcement, specifying the chemical composition, mechanical properties, dimensions, and marking requirements. On the other hand, ASTM A706/A706M concentrates on low-alloy steel rebars with improved weldability, suitable for concrete structures that require welding. In Europe, CEN has established the primary standard for steel rebars as the Eurocode 2 (EN 1992-1-1). This code provides design rules for the structural use of concrete and includes guidelines for the selection and utilization of rebars. Additionally, CEN has also developed EN 10080, which specifies the requirements for steel rebars used in concrete reinforcement, covering chemical composition, mechanical properties, dimensions, and tolerances. These international standards guarantee the quality and consistency of steel rebars utilized in construction projects worldwide. Complying with these standards helps ensure the safety and reliability of reinforced concrete structures by providing guidelines for material properties, manufacturing processes, and quality control measures.
- Q: How do steel rebars contribute to the overall occupant comfort of a building?
- The overall occupant comfort of a building is greatly influenced by the role that steel rebars play in several ways. To begin with, steel rebars are essential for reinforcing concrete structures like walls, columns, and beams, providing the building with stability and strength. This ensures that the structure can withstand external forces such as wind, earthquakes, or heavy loads, without compromising the safety of the occupants. Additionally, the reinforced concrete helps to reduce vibrations, minimizing any discomfort caused by movement or shaking of the building. Moreover, the use of steel rebars enhances the building's durability and prevents cracks and deterioration over time. This is crucial in maintaining a comfortable indoor environment as it prevents issues like water leaks, moisture penetration, and the growth of mold or mildew. By avoiding these problems, steel rebars contribute to creating a healthy and comfortable living space for the occupants. Furthermore, steel rebars are commonly employed in the construction of high-rise buildings, which are susceptible to thermal expansion and contraction. By reinforcing the concrete structure, steel rebars assist in minimizing the effects of temperature changes, reducing the risk of structural damage, and ensuring a consistent indoor temperature. This, in turn, helps to create a comfortable environment for the occupants, regulating the temperature and preventing drafts or heat loss. Additionally, steel rebars also play a crucial role in fire resistance. Concrete structures reinforced with steel rebars have a higher fire resistance compared to other materials. This is due to the fact that steel has a high melting point and does not burn, providing occupants with extra time to evacuate the building in the event of a fire. This increased fire resistance contributes to the overall occupant comfort by enhancing their safety and reducing the risk of injuries or fatalities. In conclusion, the use of steel rebars significantly contributes to the overall occupant comfort of a building by providing stability, durability, thermal regulation, and fire resistance. Their role in reinforcing concrete structures ensures the safety, longevity, and functionality of the building, ultimately creating a comfortable and secure environment for the occupants.
- Q: What is the recommended spacing between inclined steel rebars in slabs?
- The recommended spacing between inclined steel rebars in slabs typically depends on the specific design requirements and load conditions. However, a common guideline is to maintain a spacing of at least 3 times the diameter of the rebar. This ensures proper structural integrity and helps distribute the load evenly across the slab. It is important to consult with a structural engineer or refer to relevant building codes and standards for precise spacing recommendations based on the project's specifications.
- Q: How are steel rebars used in industrial buildings?
- Steel rebars are used in industrial buildings as reinforcement in concrete structures to enhance their strength and durability. They are typically placed within the concrete framework to provide support and prevent cracking or collapsing under heavy loads.
- Q: What are the factors to consider while choosing the right type of steel rebar for a project?
- When choosing the right type of steel rebar for a project, several factors need to be considered. These factors include the grade and quality of the steel, the required strength and durability, the environmental conditions of the project site, the structural design and specifications, the budget, and any specific regulations or standards that need to be followed. Additionally, factors such as corrosion resistance, weldability, and availability of the steel rebar should also be taken into account. Overall, a comprehensive analysis of these factors will help in selecting the most suitable steel rebar for the project.
- Q: What is the process of reinforcing existing concrete structures with steel rebars?
- The process of reinforcing existing concrete structures with steel rebars involves several steps to enhance the strength and durability of the structure. Firstly, a thorough inspection and assessment of the existing concrete structure is conducted to determine its condition and identify areas that require reinforcement. This involves examining the concrete for cracks, signs of degradation, or any other structural issues. Once the areas requiring reinforcement are identified, the next step is to prepare the surface. This involves cleaning the concrete surface to remove any loose debris, dirt, or contaminants that may hinder the bonding of the rebars with the concrete. This can be done using various methods such as pressure washing or sandblasting. After the surface preparation, the rebars are then placed strategically within the concrete structure. The positioning and spacing of the rebars are crucial to ensure optimal reinforcement and structural integrity. This is typically done by drilling holes or creating channels in the concrete where the rebars will be placed. Next, the rebars are inserted into the holes or channels, ensuring that they are properly aligned and secured. The rebars are typically cut to the required length and bent into the desired shape to fit the specific reinforcement needs of the structure. Once the rebars are in place, they are then anchored or secured to the existing concrete using various methods. This can be achieved through the use of epoxy adhesive, mechanical anchors, or by embedding the rebars into fresh concrete poured around them. Finally, the concrete is repaired or restored to its original condition, covering the rebars and ensuring a smooth and even surface. This can involve patching up any holes or channels created during the reinforcement process and finishing the surface to match the surrounding concrete. Overall, the process of reinforcing existing concrete structures with steel rebars requires careful planning, proper surface preparation, precise placement of rebars, secure anchoring, and appropriate finishing to achieve a strengthened and long-lasting structure.
- Q: What is the impact of steel rebars on the carbon footprint of a structure?
- The use of steel rebars in a structure has a significant impact on its carbon footprint. Steel production is a highly carbon-intensive process, resulting in significant greenhouse gas emissions. The extraction of raw materials, manufacturing, transportation, and construction of steel rebars contribute to the overall carbon footprint of a structure. However, steel rebars offer durability, strength, and structural integrity, which can prolong the lifespan of a building and reduce the need for frequent repairs or replacements. Therefore, while steel rebars contribute to the carbon footprint, their use can also result in long-term environmental benefits by reducing the overall material consumption and waste associated with a structure.
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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
OKorder Financial Service
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