Hot Rolled Deformed Steel Rebars ASTM, GB HRB400, HRB500
- Ref Price:
-
- Loading Port:
- Lianyungang
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 200000 m.t./month
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Specifications of Hot Rolled Deformed Steel Rebars ASTM, GB HRB400, HRB500:
Standard | GB UK USA | HRB335 HRB400 HRB500 G460B, B500A, B500B,B500C GR40, GR60 | |
Diameter | 6mm,8mm,10mm,12mm,14mm,16mm,18mm,20mm, 22mm,25mm,28mm,32mm,36mm,40mm,50mm | ||
Length | 6M, 9M,12M or as required | ||
Payment terms | TT payment in advance or Irrevocable LC at sight. | ||
Each bundle weight | 2-3MT, or as required | ||
Trade terms | FOB, CFR, CIF | ||
Delivery Detail | within 45 days after received advanced payment or LC. | ||
Type | Hot rolled steel rebar | ||
Brand name | DRAGON | ||
Chemical Composition: (Please kindly find our chemistry of our material based on BS4449 as below for your information)
BS4449 500B | Chemical Composition | ||||
C | Mn | Si | S | P | |
0.24 | 0.45 | 0.16 | 0.05 | 0.31 | |
Physical capability | |||||
Yield Strength(N/cm²) | Tensile Strength(N/cm²) | Elongation (%) | |||
650 | ≥500 | 19 | |||
Deformed Steel Rebars in stock
Usage and Applications of Hot Rolled Deformed Steel Rebars ASTM, GB HRB400, HRB500:
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..
Packaging & Delivery of Hot Rolled Deformed Steel Rebars ASTM, GB HRB400, HRB500:
Packaging Detail: products are packed in bundle and then shipped by container or bulk vessel, deformed bar is usually naked strapping delivery, when storing, please pay attention to moisture proof. The performance of rust will produce adverse effect.
Price:Keep lower operating costs so as to offer competitive price for our clients
Label:to be specified by customer, generally, each bundle has 1-2 labels
Invoice:Actual or Theoretical Weight Basis as buyer’s request.
Note:
1. Our products are produced according to national standard (GB), if not, supply according to national standards (GB) or agreement as customer required.
2. Other Grade and Standard Deformed Steel Bar we can supply:
Grade: GR40/GR60, G460B/B500A/B500B/B500C,BST500S
Standard: ASTM, BS, DIN
The Minimum Order Quantity of these products is high, and need to be confirmed.
3. We can not only supply Deformed Steel Bar; if you need anything about building materials, please contact us for further information.
4. Please send us your detail specifications when inquire. We will reply to you as soon as possible. We sincerely hope we can establish a long stable business relationship.
- Q: What are the factors that affect the strength of steel rebars?
- The factors that affect the strength of steel rebars include the composition of the steel, the manufacturing process, the presence of impurities, the size and shape of the rebar, and the conditions in which it is used, such as temperature and exposure to corrosion.
- Q: What are the different types of steel rebars available for different applications?
- There are several different types of steel rebars available for various applications. Some of the most commonly used types include: 1. Mild Steel Rebars: These are the most common type of rebars used in construction projects. They have a low carbon content and are relatively inexpensive. Mild steel rebars are suitable for general construction purposes and are used in residential buildings, bridges, and small to medium-sized structures. 2. High-strength Reinforcement Bars (HSRB): These rebars have a higher tensile strength compared to mild steel rebars. They are commonly used in high-rise buildings, large infrastructure projects, and heavy-duty structures where greater strength is required. HSRB rebars are often made from alloys such as carbon, manganese, or silicon to enhance their strength. 3. Epoxy-Coated Rebars: These rebars are coated with epoxy resin to protect them from corrosion. Epoxy-coated rebars are commonly used in marine structures, parking garages, and areas with high humidity or exposure to moisture. The epoxy coating acts as a barrier, preventing the steel from coming into contact with corrosive elements, thus extending the lifespan of the rebar. 4. Stainless Steel Rebars: Unlike mild steel rebars, stainless steel rebars contain a significant amount of chromium, which provides excellent resistance to corrosion. These rebars are often utilized in highly corrosive environments such as coastal areas, chemical plants, and wastewater treatment facilities. Stainless steel rebars are also used in structures that require a high aesthetic appeal, such as architectural buildings and monuments. 5. Galvanized Rebars: Galvanized rebars are coated with zinc to protect them from corrosion. The zinc coating acts as a sacrificial layer, corroding itself before the underlying steel is affected. These rebars are commonly used in areas with moderate corrosion risks, such as concrete structures exposed to deicing salts or in coastal regions. 6. Carbon Fiber Reinforced Polymer (CFRP) Rebars: CFRP rebars are made of carbon fibers embedded in a polymer matrix. They are lightweight, corrosion-resistant, and have high tensile strength. CFRP rebars are commonly used in retrofitting existing structures, as they provide excellent strength and durability without adding significant weight. The choice of steel rebar depends on the specific application, environmental conditions, and structural requirements. It is essential to consult with structural engineers and adhere to local building codes and standards to ensure the appropriate type of rebar is selected for each project.
- Q: What is the role of steel rebars in bridge deck construction?
- Steel rebars play a crucial role in bridge deck construction. They are used to reinforce the concrete used in the construction of the bridge deck. The main function of rebars is to provide tensile strength to the concrete, as concrete is strong in compression but weak in tension. Bridge decks are subjected to various loads, including the weight of the vehicles, live loads, and environmental factors such as temperature changes and vibrations. These loads can cause the bridge deck to bend, crack, or even collapse if it lacks sufficient tensile strength. By incorporating steel rebars into the bridge deck, the tensile strength of the concrete is significantly enhanced. The rebars are strategically placed throughout the concrete structure to distribute the loads and resist tension, thereby preventing cracks and ensuring the overall structural integrity of the bridge. In addition to reinforcing the concrete, steel rebars also help to control cracks that may occur due to shrinkage or thermal expansion. When the concrete shrinks or expands, it can lead to the formation of cracks, which can compromise the durability and stability of the bridge. However, the inclusion of rebars helps to control and limit the size and extent of these cracks, ensuring the long-term performance of the bridge. Furthermore, steel rebars also aid in the transfer of loads between different components of the bridge, such as the bridge deck and the supporting piers or abutments. They help to create a continuous load path, ensuring that the loads are efficiently transmitted and distributed throughout the bridge structure. In summary, steel rebars are essential in bridge deck construction due to their ability to provide the necessary tensile strength to the concrete. They enhance the structural integrity of the bridge, control cracks, and facilitate the transfer of loads, ultimately ensuring the safety and longevity of the bridge.
- Q: How do steel rebars enhance the bond between concrete and reinforcement?
- Steel rebars enhance the bond between concrete and reinforcement through various mechanisms. Firstly, the presence of rebars in concrete increases the mechanical interlock between the two materials. As concrete is poured around the rebars, it fills the gaps between the steel bars, creating a strong bond when it hardens. This mechanical interlock helps to prevent the separation of concrete and reinforcement, especially under tensile loads. Secondly, steel rebars enhance the bond by providing additional surface area for adhesion. The rough texture of the rebars allows the concrete to grip onto the steel surface, creating a stronger bond. This adhesion is further improved by the corrosion products that form on the surface of the steel rebars over time. These products create a rougher surface, increasing the bond strength between the concrete and reinforcement. Thirdly, rebars act as load transfer devices in concrete structures. When external forces are applied to the structure, the rebars distribute and transfer these forces to the surrounding concrete. This load transfer mechanism helps to improve the overall structural integrity and performance of the concrete element. Additionally, steel rebars also enhance the bond between concrete and reinforcement through their ability to resist deformation. Under tensile loads, the rebars elongate and absorb the stress, preventing the concrete from cracking. This prevents the development of cracks that could weaken the bond between the two materials. In summary, steel rebars enhance the bond between concrete and reinforcement by providing mechanical interlock, increased surface area for adhesion, load transfer capabilities, and resistance to deformation. These factors collectively contribute to the overall strength, durability, and performance of reinforced concrete structures.
- Q: What are the factors that determine the spacing of steel rebars in a concrete structure?
- The spacing of steel rebars in a concrete structure relies on various factors that guarantee the concrete's structural integrity and strength. These factors encompass: 1. Structural Design: The spacing of rebars is influenced by the structural design requisites and specifications of the concrete structure. Engineers take into account the loads, stresses, and forces that the structure will endure and compute the necessary reinforcement spacing accordingly. 2. Concrete Strength: The concrete's strength used in the structure is a pivotal determinant in establishing rebar spacing. Higher-strength concrete may necessitate closer spacing of rebars to provide ample reinforcement and prevent cracking or failure under load. 3. Rebar Diameter: The diameter of the steel rebars also contributes to determining the spacing. Thicker or larger diameter rebars may require wider spacing, while thinner rebars typically necessitate closer spacing to deliver the desired reinforcement. 4. Bar Bending and Placing: The ease of bending and placing the rebars during construction is another crucial factor. Often, practical considerations dictate the spacing, such as guaranteeing proper access for workers and equipment and facilitating the concrete pouring process. 5. Environmental Factors: Environmental conditions, including exposure to corrosive substances or extreme weather conditions, can impact rebar spacing. Closer spacing may be necessary in corrosive environments to provide additional protection against rust and deterioration. 6. Building Codes and Regulations: Local authorities or relevant organizations establish building codes and regulations that set the minimum requirements for rebar spacing in concrete structures. These codes ensure compliance with safety standards and offer guidelines for construction practices. In conclusion, the spacing of steel rebars in a concrete structure is a crucial aspect in ensuring its strength, durability, and resilience. It relies on a combination of factors, including structural design, concrete strength, rebar diameter, construction practicalities, environmental considerations, and adherence to building codes and regulations.
- Q: What is the typical yield-to-ultimate strength ratio of steel rebars?
- The typical yield-to-ultimate strength ratio of steel rebars is approximately 0.85 to 0.95.
- Q: How do steel rebars provide strength to concrete structures?
- Steel rebars provide strength to concrete structures by acting as reinforcement. When embedded within the concrete, rebars enhance its tensile strength, which is otherwise low. As concrete is strong in compression but weak in tension, the rebars resist the tensile forces that can cause cracking or failure in the structure. By distributing and absorbing these tensile forces, steel rebars increase the overall strength, durability, and structural integrity of the concrete.
- 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: How are steel rebars different from steel mesh?
- Steel rebars and steel mesh are both made from steel, but they differ in their shape and purpose. Steel rebars are long, cylindrical bars with ridges or deformations along their surface, designed to provide strength and reinforcement to concrete structures. They are typically used in construction projects to increase the tensile strength of concrete and prevent cracking or collapsing. On the other hand, steel mesh consists of interconnected wires that form a grid-like pattern. It is primarily used as a reinforcing material in areas that require a large amount of coverage, such as slabs, walls, or foundations. Steel mesh provides structural support and helps distribute load evenly, reinforcing the concrete against potential stresses. In summary, while both steel rebars and steel mesh serve the purpose of reinforcing concrete, they differ in shape and application.
- Q: How are steel rebars used in road and pavement construction?
- Steel rebars are used in road and pavement construction to provide reinforcement and enhance the structural integrity of the concrete. They are placed within the concrete mixture to withstand the tensile forces and prevent cracks or failures in the road or pavement, ensuring durability and longevity of the infrastructure.
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Hot Rolled Deformed Steel Rebars ASTM, GB HRB400, HRB500
- Ref Price:
-
- Loading Port:
- Lianyungang
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 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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