Hot Rolled Deformed Steel Bar HRB400
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- China Main Port
- Payment Terms:
- TT or LC
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Product Description:
OKorder is offeringDeformed Steel Bar 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..
Product Advantages:
OKorder's Deformed Steel Bar 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:
Chemical Composition: (Please kindly find our chemistry of our material based on HRB400 as below for your information)
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 | |||||
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: What makes stainless steel stainless?
A2: Stainless steel must contain at least 10.5 % chromium. It is this element that reacts with the oxygen in the air to form a complex chrome-oxide surface layer that is invisible but strong enough to prevent further oxygen from "staining" (rusting) the surface. Higher levels of chromium and the addition of other alloying elements such as nickel and molybdenum enhance this surface layer and improve the corrosion resistance of the stainless material.
Q3: Can stainless steel rust?
A3: 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.
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- Q: How do steel rebars improve the ductility of concrete?
- Steel rebars improve the ductility of concrete in several ways. Firstly, the presence of rebars helps to distribute and dissipate stress throughout the concrete structure, preventing the concentration of loads in specific areas. This even distribution of stress helps to prevent the formation of cracks or fractures, thus enhancing the overall ductility of the concrete. Secondly, when the concrete undergoes tension or bending forces, the rebars act as reinforcement to resist these forces. The steel rebars have high tensile strength compared to concrete, which is weak in tension. This reinforcement allows the concrete to withstand higher tensile stresses without breaking, increasing its ductility. Additionally, the bond between the steel rebars and the concrete matrix plays a crucial role in improving ductility. The rough surface of the rebars provides better adhesion with the surrounding concrete, increasing the transfer of stresses between the two materials. This bond prevents the rebars from slipping out of the concrete during deformation, ensuring the structural integrity and enhancing the ductility of the composite material. Moreover, the presence of steel rebars also contributes to the post-cracking behavior of concrete. When cracks develop under high loads, the rebars help to hold the concrete together and prevent further propagation of the cracks. This post-cracking behavior allows the concrete to maintain its load-bearing capacity even in a damaged state, thereby improving its overall ductility. In summary, steel rebars improve the ductility of concrete by distributing stress, resisting tension and bending forces, enhancing the bond between concrete and rebars, and providing post-cracking reinforcement. These combined effects result in a more flexible and durable concrete structure that can withstand deformation without catastrophic failure.
- Q: What are the different types of steel rebars used in marine structures?
- The different types of steel rebars used in marine structures include epoxy-coated rebars, stainless steel rebars, and galvanized rebars. Epoxy-coated rebars are coated with epoxy to provide protection against corrosion. Stainless steel rebars are highly resistant to corrosion and are commonly used in environments with high chloride content. Galvanized rebars are coated with a layer of zinc to protect against corrosion and are suitable for marine structures with low to moderate corrosion risks.
- Q: Can steel rebars be used in structures with limited maintenance access?
- Structures with limited maintenance access can utilize steel rebars, which are commonly chosen for construction projects due to their exceptional strength and durability. These rebars can endure heavy loads and provide reinforcement to concrete structures. In structures with restricted maintenance access, steel rebars offer numerous benefits. Firstly, they boast a lengthy lifespan and are corrosion-resistant, minimizing the need for frequent maintenance. Unlike wood or aluminum, steel rebars do not decay or rot over time, rendering them suitable for structures that are challenging to reach for regular maintenance. Moreover, steel rebars can be easily examined using non-destructive testing methods like ultrasound or magnetic particle inspection. These techniques can identify any potential flaws or damage in the rebars without invasive measures, thereby ensuring the structural soundness of the building. Furthermore, steel rebars can be designed and installed in a manner that reduces the necessity for future maintenance. For instance, employing epoxy-coated rebars can provide an additional layer of protection against corrosion, prolonging the structure's lifespan and reducing maintenance requirements. However, it is crucial to acknowledge that while steel rebars are highly durable, they are not entirely maintenance-free. Over time, the protective coatings on the rebars may deteriorate, and if left unaddressed, corrosion can occur. Therefore, periodic inspections and maintenance activities must still be conducted, even in structures with limited access. In conclusion, due to their durability, corrosion resistance, and non-invasive inspection capabilities, steel rebars can be employed in structures with limited maintenance access. Nevertheless, regular inspections and maintenance are still necessary to ensure the long-term performance of the rebars and the overall structural integrity of the building.
- Q: Can steel rebars be cut to custom lengths?
- Yes, steel rebars can be cut to custom lengths.
- Q: What is the process of bending steel rebars into shapes other than straight bars?
- To create shapes other than straight bars, steel rebars undergo a series of steps and techniques. Initially, measurement and marking are carried out to identify the desired bending points and angles. A measuring tape, square, and marker are typically utilized for this purpose. Following this, the rebars are fastened within a bending machine or a manual bending tool. The bending machine comprises a bending head and a bending table as its primary components. The rebars are positioned on the bending table, while the bending head is adjusted to the desired angle and position. Once the rebars are securely placed, the bending process commences. Manual tools like a rebar bender or cutter can be utilized for smaller rebars. These tools enable the worker to exert force and bend the steel rebar into the desired shape. For larger rebars or intricate shapes, a hydraulic bending machine is often employed. This machine employs hydraulic pressure to bend the rebars, allowing for enhanced precision and control. The operator can modify the bend's angle and radius to achieve the desired shape. Throughout the bending process, it is crucial to prevent overstressing or damaging the rebars. Excessive bending can weaken the rebars and jeopardize their structural integrity. Hence, it is essential to adhere to the bending specifications and guidelines provided by engineers and construction standards. Once the rebars have been bent into the desired shape, they are typically inspected for any defects or imperfections. This inspection ensures that the rebars conform to the required standards and can be safely utilized in construction projects. In conclusion, the process of bending steel rebars into shapes other than straight bars involves measurement and marking, securing the rebars in a bending machine, applying force or hydraulic pressure to bend the rebars, and inspecting the final product for quality assurance. This process necessitates precision, skill, and adherence to safety guidelines to ensure the rebars can withstand the intended structural loads.
- Q: What is the composition of steel rebars?
- Steel rebars, also referred to as reinforcing bars or reinforced steel bars, are extensively utilized in construction projects for the purpose of reinforcing and providing strength to concrete structures. The construction of steel rebars predominantly relies on iron as the main constituent. In combination with carbon, iron forms the steel utilized in the rebars. Typically, the carbon content in rebars ranges from 0.2% to 0.3% by weight. This carbon content effectively enhances the steel's hardness and strength, making it suitable for reinforcing concrete structures. Alongside iron and carbon, steel rebars can contain trace amounts of other alloying elements such as manganese, silicon, and sulfur. These elements are deliberately added in controlled quantities to improve specific properties of the steel, including durability, resistance to corrosion, and weldability. Furthermore, to augment the bond between the rebar and the surrounding concrete, steel rebars are often manufactured with a ribbed or deformed surface. These surface deformations create a mechanical interlock, ultimately boosting the overall strength and stability of the reinforced structure. It is noteworthy that the precise composition of steel rebars may differ based on the specific grade or standard being followed. Different countries and organizations have their own specifications for steel rebars, which stipulate the allowable range of alloying elements and other parameters. In summary, the composition of steel rebars primarily consists of iron, carbon, and small amounts of other alloying elements. The specific details of the composition vary depending on the grade and standard being adhered to.
- Q: Are there any specific guidelines for handling and placing steel rebars in concrete?
- Yes, there are specific guidelines for handling and placing steel rebars in concrete. These guidelines include ensuring proper cleaning, cutting, and bending of rebars, maintaining proper spacing and alignment, securely fastening rebars, and providing adequate concrete cover to prevent corrosion. Additionally, guidelines may vary depending on the project specifications, structural requirements, and local building codes.
- Q: What is the average weight of steel rebars per meter?
- The average weight of steel rebars per meter can vary depending on the specific size and type of rebar being used. However, as a general guideline, a common size of rebar such as a #4 (1/2 inch diameter) typically weighs around 0.668 kilograms per meter, while a #8 (1 inch diameter) can weigh approximately 2.67 kilograms per meter. It is important to consult the manufacturer or reference a reliable source to obtain the accurate weight of steel rebars per meter for a specific size and type.
- Q: How do steel rebars affect the overall constructability of a project?
- The overall constructability of a project is greatly influenced by steel rebars. These rebars, also known as reinforcing bars, play a vital role in improving the strength, durability, and stability of concrete structures. They are essential in mitigating the tensile forces that concrete alone cannot bear, thereby increasing the overall load-bearing capacity of the structure. To begin with, steel rebars simplify the construction process by providing a framework for pouring and shaping concrete. They serve as a skeletal structure that holds the concrete in place during the curing process, ensuring proper setting and desired shaping. This contributes to the efficiency of construction projects, allowing for faster concrete placement and reducing the risk of structural deformities. Furthermore, rebars enhance the structural integrity of the project. By reinforcing the concrete, they enhance its ability to resist cracking, bending, and breaking under different loads and environmental conditions. This added strength and resilience make the structure more durable and reduce the need for frequent repairs or maintenance, ultimately saving time and costs in the long term. In addition to strength and durability, steel rebars also contribute to the constructability of a project by enabling flexibility in design. Architects and engineers have the freedom to create complex and innovative structures, such as high-rise buildings, bridges, and tunnels, that require high load-bearing capacities. The versatility of rebars allows for the construction of structures with unique shapes, curves, and spans, expanding the possibilities of architectural design. Moreover, steel rebars facilitate constructability by enabling the construction of large-scale projects. They allow for the creation of reinforced concrete elements, such as columns, beams, and slabs, capable of supporting heavy loads and distributing them evenly throughout the structure. This capability is particularly crucial for projects that require significant weight-bearing capacity, such as industrial buildings or infrastructure projects. In conclusion, steel rebars have a profound impact on the constructability of a project. They simplify the construction process, enhance structural integrity, enable flexibility in design, and facilitate the construction of large-scale projects. By incorporating rebars into concrete structures, construction professionals can ensure that their projects are stronger, more durable, and better equipped to withstand various loads and environmental conditions.
- Q: What are the guidelines for inspecting steel rebars on a construction site?
- To ensure the structural integrity and compliance with safety standards, specific guidelines must be followed when inspecting steel rebars on a construction site. The following are some essential guidelines for this inspection: 1. Visual Assessment: Begin by visually examining the entire rebar installation, checking for any indications of damage, rust, or corrosion. Verify that the rebars are aligned, spaced, and placed correctly as specified in the construction drawings. 2. Rebar Specifications: Confirm that the rebars used meet the specifications outlined in the construction plans. Inspect the size, grade, and type of steel rebars to ensure they meet the required standards and are suitable for the intended load-bearing capacity. 3. Positioning and Spacing: Ensure that the rebars are positioned and spaced properly according to the design drawings. Check for the appropriate lap length (the overlapping of rebars) to ensure structural stability and even load distribution. 4. Clear Cover: Inspect the clear cover, which is the distance between the outer surface of the rebar and the concrete surface. Ensure that the clear cover meets the specified requirements as it is crucial for protecting against corrosion and ensuring structural durability. 5. Vertical Alignment: Check the vertical alignment or plumbness of the rebars. They should be straight and aligned with the required position, avoiding excessive bending or curving. 6. Rebar Connections: Inspect the connections between rebars, such as lap splices or mechanical couplers. Verify that the connections are made correctly and comply with approved construction standards. 7. Welding: If welding is used to join rebars, ensure that it is performed by certified welders and meets the required specifications. Inspect the quality of the welding joints, including the depth of penetration and the absence of defects or cracks. 8. Protective Coating: Verify the presence and condition of any protective coating applied to the rebar, such as epoxy coatings or galvanization, to prevent corrosion and enhance longevity. 9. Documentation: Maintain detailed records of the inspection process, including photographs, measurements, and any deviations or corrective actions taken. These records will serve as essential documentation for quality control and future reference. 10. Compliance with Regulations: Ensure that the inspection adheres to relevant local building codes, industry standards, and project specifications. Familiarize yourself with the applicable regulations to ensure compliance throughout the inspection process. By following these guidelines, construction site inspectors can contribute to the overall success of the construction project by ensuring the quality, safety, and longevity of steel rebars.
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Hot Rolled Deformed Steel Bar HRB400
- Ref Price:
-
- Loading Port:
- China Main Port
- Payment Terms:
- TT or LC
- Min Order Qty:
- -
- Supply Capability:
- -
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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