Reinforcing Deformed Steel Bars with Grade HRB400-HRB500
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 20000 m.t./month
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Specification
Standard:
GB
Technique:
Hot Rolled
Shape:
Round
Surface Treatment:
Black
Steel Grade:
HRB400
Thickness:
6-32mm
Length:
12m/pc
Net Weight:
2mt/bundle
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 Africa, 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.
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 by OKorder.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: Can you offer the third part inspection certificates ?
A3: Yes, we can apply third part inspection before shipping, such as SGS, BV, etc .
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- Q: What are the different types of steel rebars used in foundation construction?
- There are several different types of steel rebars that are commonly used in foundation construction. These include: 1. Mild Steel Rebars: Also known as black bars, mild steel rebars are the most commonly used type of rebars in foundation construction. They have a low carbon content and are easy to work with. Mild steel rebars provide good tensile strength and are cost-effective. 2. High Yield Strength Rebars: These rebars have a higher carbon content and are heat-treated to increase their strength. They are commonly used in areas where extra strength is required, such as in high-rise buildings or in seismic zones. High yield strength rebars offer superior resistance to tensile and compressive forces. 3. Epoxy-Coated Rebars: Epoxy-coated rebars are coated with epoxy resin to protect them from corrosion. They are commonly used in areas where the foundation is exposed to moisture or chemicals, such as in marine or industrial environments. The epoxy coating acts as a barrier, preventing water and other corrosive substances from reaching the steel and causing it to rust. 4. Galvanized Rebars: Galvanized rebars are coated with a layer of zinc to protect them from corrosion. The zinc coating provides excellent resistance to moisture and chemicals, making galvanized rebars suitable for use in areas with high humidity or in contact with concrete that contains chloride ions. They are commonly used in coastal areas or in structures such as bridges and parking garages. 5. Stainless Steel Rebars: Stainless steel rebars are highly corrosion-resistant and are used in environments where other types of rebars may fail due to corrosion. They are commonly used in structures that are exposed to aggressive environments, such as in chemical plants or wastewater treatment facilities. Stainless steel rebars are also used in areas with a high risk of corrosion, such as in coastal or humid regions. Overall, the choice of steel rebars for foundation construction depends on factors such as the specific requirements of the project, the environmental conditions, and the level of corrosion resistance needed. It is important to select the appropriate type of rebar to ensure the longevity and strength of the foundation.
- Q: Can steel rebars be used in marine or coastal construction projects?
- Yes, steel rebars can be used in marine or coastal construction projects. However, it is crucial to use corrosion-resistant rebars, such as epoxy-coated or stainless steel rebars, to withstand the harsh marine environment and prevent corrosion.
- Q: How is steel rebar manufactured?
- Steel rebar, or reinforcing bar, is manufactured through a process known as steelmaking. The manufacturing process involves several steps to ensure the production of high-quality and durable rebar. The first step in manufacturing steel rebar is the selection and preparation of raw materials. Iron ore, coal, and limestone are the primary raw materials used in steelmaking. Iron ore is extracted from mines and then processed to remove impurities. Coal is used as a fuel source to heat the iron ore, while limestone acts as a flux to remove impurities during the heating process. Once the raw materials are prepared, they are combined in a blast furnace. The blast furnace is a large, cylindrical structure where the iron ore, coal, and limestone are heated to extreme temperatures. The intense heat causes a chemical reaction that separates the iron from the impurities, resulting in molten iron. The molten iron is then transferred to a basic oxygen furnace (BOF) or an electric arc furnace (EAF). In the BOF process, the molten iron is combined with scrap steel and other alloys to create the desired steel composition. Oxygen is blown into the furnace, which removes impurities and adjusts the carbon content. In the EAF process, electricity is used to melt the scrap steel and other alloys, and chemical reactions occur to adjust the composition and remove impurities. After the steel has been produced, it is poured into continuous casting machines, which shape the steel into long, rectangular strands called billets. These billets are then passed through a series of rolling mills, which gradually reduce their size and shape them into the desired cross-sectional profile. The rolling process also enhances the strength and durability of the steel. Once the rebar has been rolled, it undergoes a process called quenching and tempering. This involves rapidly cooling the rebar in water to increase its hardness, followed by reheating it to a specific temperature and then cooling it slowly. This process helps improve the rebar's strength and ductility, making it suitable for reinforcement in concrete structures. Finally, the rebar is cut into desired lengths and often undergoes surface treatment, such as galvanization or epoxy coating, to enhance its corrosion resistance. It is then bundled and shipped to construction sites, where it is used to reinforce concrete structures like buildings, bridges, and roads. In summary, the manufacturing of steel rebar involves the selection and preparation of raw materials, the melting and refining of iron in a blast furnace or electric arc furnace, the shaping of the steel into billets through continuous casting and rolling, the quenching and tempering process to improve its strength and ductility, and the final cutting and surface treatment before it is ready for use in construction projects.
- Q: What is the diameter range of steel rebars?
- The diameter range of steel rebars typically varies from 6mm to 50mm.
- Q: Are there any disadvantages to using steel rebars?
- Yes, there are some disadvantages to using steel rebars. Firstly, steel rebars can corrode over time, especially in environments with high moisture or exposure to chemicals, which can reduce their strength and durability. Additionally, steel rebars are susceptible to thermal expansion and contraction, leading to cracking in concrete structures. Moreover, steel rebars are heavy and can be challenging to handle and transport, making construction processes more labor-intensive.
- Q: Can steel rebars be used in structures with high resistance to creep?
- Yes, steel rebars can be used in structures with high resistance to creep. Steel rebars are commonly used in reinforced concrete structures and provide strength and durability to the overall structure. Creep is the gradual deformation of a material under constant stress over time. While steel does exhibit some creep, it is considered to have a low creep rate compared to other materials such as concrete or timber. Additionally, the use of rebars in reinforced concrete structures can help distribute the load and minimize the effects of creep by adding stiffness and reducing the overall stress on the concrete. Therefore, steel rebars can be effectively used in structures with high resistance to creep when designed and installed properly.
- Q: Are there any specific safety precautions to be taken while handling steel rebars?
- Yes, there are several safety precautions that should be taken while handling steel rebars. Here are some key points to consider: 1. Personal Protective Equipment (PPE): Always wear appropriate PPE, including safety goggles or glasses, gloves, and steel-toed boots. This will help protect against eye injuries, cuts, and crushed toes. 2. Lifting Techniques: When lifting rebars, use proper lifting techniques such as bending at the knees, keeping the back straight, and using leg muscles to lift the load. Avoid twisting or jerking motions while lifting to prevent strains or sprains. 3. Proper Storage: Store rebars in an organized and secure manner, ensuring they are not leaning against walls or other structures. This will prevent them from falling and causing injuries. 4. Sharp Edges: Be cautious of the sharp edges on rebars. Always handle them with care to avoid cuts or punctures. It is recommended to wear protective gloves to reduce the risk of hand injuries. 5. Secure Transportation: When transporting rebars, secure them properly to prevent movement or falling off the vehicle. Use appropriate restraints such as ropes or straps to secure the load safely. 6. Electrical Hazards: Be aware of any overhead power lines or live electrical sources near the working area. Maintain a safe distance from them to prevent accidental contact with the rebars, which can conduct electricity. 7. Communication and Awareness: Always communicate with other workers in the vicinity to ensure everyone is aware of the presence of rebars. This will help prevent accidental injuries caused by tripping or colliding with the rebars. By following these safety precautions, you can minimize the risk of accidents or injuries while handling steel rebars. It is also important to undergo proper training and adhere to any specific safety guidelines provided by your employer or industry regulations.
- Q: What are the factors to consider while designing with steel rebars?
- There are several factors to consider when designing with steel rebars, which play a crucial role in ensuring the structural integrity and performance of a construction project. 1. Load capacity: One of the primary factors to consider is the anticipated load capacity of the structure. Steel rebars are designed to provide reinforcement and enhance the tensile strength of concrete. Therefore, the size, spacing, and placement of rebars should be determined based on the expected loads that the structure will be subjected to. 2. Structural requirements: Different structural elements may have specific design requirements. For instance, beams, columns, slabs, and foundations have unique load distribution patterns, and the design of rebars should be tailored to meet these specific needs. The dimensions, quantity, and arrangement of rebars will vary based on the intended structural purpose. 3. Durability: Steel rebars are exposed to various environmental conditions, such as moisture, temperature fluctuations, and chemical exposure. These factors can lead to corrosion, which can significantly impact the strength and longevity of the structure. Therefore, designers need to consider the required level of durability and specify appropriate protective measures, such as using epoxy-coated rebars or providing sufficient concrete cover. 4. Construction methodology: The construction method used for the project can influence the design of steel rebars. Factors such as formwork, construction joints, and accessibility during the placement of rebars need to be taken into account. The design should accommodate the construction process, ensuring ease of installation and proper alignment of rebars. 5. Building codes and regulations: Compliance with local building codes and regulations is crucial to ensure the safety and legality of the structure. Designers must consider the specific requirements outlined in the codes, including minimum rebar sizes, spacing, and cover requirements. Adhering to these standards ensures that the structure meets the necessary safety standards and can withstand potential hazards. 6. Cost-effectiveness: While ensuring structural integrity, it is also essential to consider the cost-effectiveness of the design. Optimizing the placement and arrangement of rebars can help minimize material and labor costs without compromising the safety and performance of the structure. In conclusion, designing with steel rebars involves considering factors such as load capacity, structural requirements, durability, construction methodology, building codes, and cost-effectiveness. By carefully evaluating these factors, designers can create robust, safe, and long-lasting structures.
- Q: Can steel rebars be used in the construction of dams and reservoirs?
- Yes, steel rebars can be used in the construction of dams and reservoirs. Steel rebars provide strength and durability to the concrete structures, making them suitable for reinforcing the massive concrete walls and foundations required for dam and reservoir construction.
- Q: How do steel rebars affect the overall flexibility of a structure?
- Steel rebars can significantly enhance the overall flexibility of a structure. Rebars, being strong and durable, provide reinforcement to concrete, increasing its tensile strength. This reinforcement prevents cracking and enhances the structure's ability to withstand external forces, such as earthquakes or heavy loads. By distributing stress more evenly, steel rebars enhance the flexibility of the structure, allowing it to better adapt to dynamic forces and maintain its integrity.
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Reinforcing Deformed Steel Bars with Grade HRB400-HRB500
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 20000 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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