Deformed Steel Bar, Concrete Reinforcing Steel Rebars
- Ref Price:
-
- Loading Port:
- China main port
- Payment Terms:
- TT or LC
- Min Order Qty:
- 100 m.t.
- Supply Capability:
- 100000 m.t./month
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Product Description:
OKorder is offering Deformed Steel Bar, Concrete Reinforcing Steel 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 African, South American and Asian markets. We provide quotations within 24 hours of receiving an inquiry and guarantee competitive prices.
Product Applications:
Deformed Steel Bar, Concrete Reinforcing Steel Rebars 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 Deformed Steel Bar, Concrete Reinforcing Steel Rebars 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: HRB335,HRB400,HRB500
Certificates: ISO, SGS, BV, CIQ
Length: 6m – 12m, as per customer request
Packaging: Export packing, nude packing, bundled
| DEFORMED BAR | |
| SIZE d(mm) | theoretical kg/m |
| 6 | 0.222 |
| 8 | 0.395 |
| 10 | 0.617 |
| 12 | 0.888 |
| 14 | 1.21 |
| 16 | 1.58 |
| 18 | 2 |
| 20 | 2.47 |
| 22 | 2.98 |
| 25 | 3.85 |
| 28 | 4.83 |
| 32 | 6.31 |
FAQ:
Q1: what is the difference between actual weight and theoretical weight?
A1: All the section steel has two weights: actual weight and theoretical weight. Actual weight is the weighing out when the product delivered from the mill. Theoretical weight is calculated by pieces. The invoice can be based on each of them as your request.
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:What is the corrosion resistance of steel rebars?
- The surface of steel rebars forms a protective layer, known as a passive film, which provides excellent corrosion resistance. This film is created when the steel interacts with the surrounding environment. By acting as a barrier, the passive film prevents oxygen and moisture from reaching the steel, thus inhibiting corrosion. There are various factors that contribute to the corrosion resistance of steel rebars. For example, the presence of alloying elements like chromium, nickel, and molybdenum improves the formation and stability of the passive film, making the rebars more resistant to corrosion. Additionally, the composition and microstructure of the steel rebars play a crucial role in determining their resistance to corrosion. However, it is important to note that the corrosion resistance of steel rebars can be compromised under certain conditions. High levels of chlorides, such as those in marine environments or de-icing salts, can accelerate corrosion and reduce the effectiveness of the passive film. Similarly, exposure to acidic or alkaline environments can also negatively affect the corrosion resistance of steel rebars. To minimize the risk of corrosion, various protective measures can be taken. These include applying coatings or paints to the rebars, using corrosion inhibitors, or implementing cathodic protection systems. Regular inspection, maintenance, and proper design and construction practices are also essential to ensure the long-term corrosion resistance of steel rebars in different applications. In conclusion, the excellent corrosion resistance of steel rebars is due to the formation of a protective passive film. However, this resistance can be influenced by factors such as the environment, alloying elements, and microstructure. By implementing appropriate protective measures and maintenance practices, the corrosion resistance of steel rebars can be effectively maintained, ensuring their durability and structural integrity.
- Q:Are steel rebars resistant to corrosion?
- Yes, steel rebars are resistant to corrosion.
- Q:What are the specifications for steel rebars used in high-rise buildings?
- The specifications for steel rebars used in high-rise buildings typically include requirements for the diameter, tensile strength, yield strength, and elongation percentage of the rebars. The diameter can range from 6mm to 50mm, depending on the structural requirements. The tensile strength is usually specified as a minimum value, such as 500MPa or 600MPa. The yield strength is typically higher than the tensile strength and can be around 420MPa to 600MPa. The elongation percentage specifies how much the rebar can stretch before it breaks, and it is often required to be at least 14% or higher. Additionally, the rebars used in high-rise buildings must meet specific standards and codes, such as ASTM A615 or BS4449, to ensure their quality and performance in the construction process.
- Q:What are the guidelines for inspecting steel rebars on a construction site?
- The guidelines for inspecting steel rebars on a construction site typically include checking for proper placement, alignment, and spacing of the rebars according to the project specifications and design drawings. Inspectors also need to ensure that the rebars are free from any damages, rust, or contamination that could affect their structural integrity. Additionally, inspectors should verify the rebars' dimensions, lengths, and grades, as well as their proper anchorage and connection to adjacent elements. Regular inspections throughout the construction process are crucial to maintain quality and compliance with safety standards.
- Q:What are the different types of steel rebars used in tunnel constructions?
- Tunnel constructions rely on the use of different steel rebars to strengthen and fortify the tunnels. These rebars play a vital role in providing stability and reinforcement to the tunnel structures. Below are several types of steel rebars commonly utilized in tunnel constructions: 1. Mild Steel Rebars: Also known as black or carbon steel rebars, mild steel rebars are the most frequently employed in tunnel constructions. They are both cost-effective and possess sufficient strength to meet the structural demands of tunnels. 2. High-Strength Steel Rebars: High-strength steel rebars, sometimes referred to as tension steel, offer enhanced tensile strength, making them ideal for tunnels that require high load-bearing capabilities. These rebars are typically fabricated from alloys such as ASTM A615 Grade 80 or ASTM A706 Grade 80. 3. Stainless Steel Rebars: Stainless steel rebars are resistant to corrosion and provide excellent durability in harsh tunnel environments. They are commonly used in tunnel constructions where corrosion protection is vital, such as in marine or coastal areas. 4. Epoxy-Coated Rebars: Epoxy-coated rebars are regular mild steel rebars that have been coated with epoxy to safeguard against corrosion. They are often employed in tunnel constructions that are exposed to moisture, chemicals, or other corrosive elements. 5. Galvanized Rebars: Galvanized rebars are coated with a layer of zinc to shield them from corrosion. They are commonly used in tunnel constructions that are exposed to moisture or in regions with high humidity levels. 6. Fiberglass Rebars: Fiberglass rebars, also known as GFRP (Glass Fiber Reinforced Polymer) rebars, are lightweight and resistant to corrosion. They are used in tunnel constructions where reducing weight is crucial or in areas with high electromagnetic interference. 7. Carbon Fiber Rebars: Carbon fiber rebars, also called CFRP (Carbon Fiber Reinforced Polymer) rebars, possess high tensile strength and are resistant to corrosion. They are often utilized in tunnel constructions that require high tensile strength and resistance to chemical or environmental degradation. Choosing the appropriate type of steel rebar for tunnel constructions depends on various factors such as load-bearing requirements, exposure to corrosion, environmental conditions, and project budget. It is advisable to consult with structural engineers or construction experts to ensure the optimal selection of steel rebars for tunnel projects.
- Q:What are the different methods of joining steel rebars?
- There is a range of methods available for joining steel rebars, each with its own set of advantages and disadvantages. Here, we present the most common techniques: 1. Lap Splicing: The most widely used method for joining rebars is lap splicing. It entails overlapping two rebars and securing them together with wire or metal ties. This approach is cost-effective and straightforward, but it necessitates longer lap lengths to achieve the required strength. 2. Mechanical Splicing: Mechanical splicing involves connecting rebars using mechanical couplers or splices. These couplers are specifically designed to establish a strong and dependable connection between the rebars. Mechanical splicing enables quicker installation and reduces the need for lengthy overlaps. However, it may be more costly compared to lap splicing. 3. Welding: Another option for joining steel rebars is welding. This process involves heating the rebars and fusing them together using electric arcs or gas flames. Welding creates a robust and permanent connection, but it requires skilled labor and specialized equipment. It is commonly employed in precast concrete applications. 4. Bolted Connections: Bolted connections utilize bolts and nuts to join the rebars. This method offers a flexible and adjustable connection, making it suitable for certain applications. However, bolted connections necessitate additional hardware and may not be as strong as other methods. 5. Adhesive Bonding: Adhesive bonding involves using epoxy or other adhesives to join rebars. The adhesive is applied to the rebars, and they are pressed together until the adhesive cures and forms a strong bond. Adhesive bonding provides a clean and aesthetically pleasing finish, but it may not offer the same level of strength as other methods and is more suitable for non-structural applications. It is essential to consider factors such as specific project requirements, structural design, and construction techniques when selecting a joining method. Consulting with structural engineers and adhering to industry standards and codes is crucial to ensure the appropriate selection and implementation of the joining method for steel rebars.
- Q:How are steel rebars installed in foundations?
- Steel rebars are typically installed in foundations by first determining the required spacing and size of the rebars as per the structural design. The rebars are then cut to the appropriate lengths and placed in the desired positions within the foundation. They are secured in place using wire ties or rebar chairs to maintain the required spacing and prevent movement. Finally, concrete is poured over the rebars, encapsulating them within the foundation and providing structural reinforcement.
- Q:What is the purpose of using steel rebars in concrete structures?
- To enhance the overall strength and durability of concrete structures, steel rebars are employed. While concrete excels in compression, it lacks strength in tension. By integrating steel rebars into the concrete, the structure becomes capable of withstanding tensile forces and averting cracking or failure. Typically crafted from carbon steel, steel rebars possess robustness and high tensile strength. They are positioned within the concrete molds prior to pouring, thereby creating a reinforced concrete structure. When exposed to tensile forces, the concrete transfers the load to the steel rebars, which can effectively endure the stretching or pulling forces. This reinforcement aids in the equitable distribution of the load, warding off localized stress points and diminishing the likelihood of structural failure. In addition to providing tensile strength, steel rebars also assist in managing cracks in concrete structures. As concrete contracts and expands due to temperature fluctuations or drying, it becomes susceptible to cracking. The inclusion of steel rebars curbs the width and extent of these cracks, guaranteeing the structural integrity and prolonged lifespan of the concrete. Moreover, steel rebars heighten the resistance of concrete structures to seismic activity or other dynamic forces. The malleability of steel rebars enables them to absorb and dissipate energy during earthquakes or vibrations, thereby diminishing the risk of collapse. In essence, the purpose of incorporating steel rebars into concrete structures is to fortify and reinforce the concrete. This entails providing additional tensile strength, managing cracks, and augmenting the overall durability and resilience of the structure.
- Q:Are there any environmental concerns related to steel rebars?
- Yes, there are some environmental concerns related to steel rebars. The production of steel requires significant amounts of energy and releases carbon dioxide emissions, contributing to climate change. Additionally, the extraction of iron ore and other raw materials for steel production can cause habitat destruction and depletion of natural resources. However, steel rebars are also highly recyclable, reducing the need for new steel production and minimizing environmental impact.
- Q:What are the common myths and misconceptions about steel rebars?
- Addressing the importance of dispelling myths and misconceptions surrounding steel rebars is necessary for a better comprehension of their properties and applications. One prevalent myth is the ease with which steel rebars rust. Although steel can rust, rebars are typically manufactured using corrosion-resistant materials, such as epoxy-coated or galvanized steel. These coatings form a protective layer that prevents rusting, resulting in rebars that are highly durable and long-lasting, even in harsh environments. Another misconception is that larger rebars always offer stronger reinforcement. While the size or diameter of a rebar does contribute to its strength, it is not the sole determining factor. The quality or grade of the steel used, as well as its proper positioning within the concrete structure, are equally significant. Engineers meticulously calculate the necessary strength and spacing of rebars based on the specific load and structural requirements. Some individuals hold the belief that steel rebars are exclusively utilized in extensive construction projects. However, rebars are commonly employed in various construction applications, ranging from residential buildings to bridges and highways. Their versatility and strength make them indispensable components in reinforcing concrete structures of all sizes. There is also a misconception that steel rebars heighten the risk of electrical conductivity. While steel is an electricity conductor, the presence of rebars within a concrete structure does not significantly increase the likelihood of electrical hazards. Concrete acts as an insulator, and rebars are typically encased within it, thereby reducing the chances of contact with electrical currents. Finally, there exists a myth that steel rebars are expensive and unaffordable for most construction projects. In reality, the cost of rebars varies depending on factors such as grade, size, and quantity required. There are numerous options available to accommodate different budgets and project needs. Furthermore, the longevity and durability of steel rebars make them a cost-effective choice in the long term. In conclusion, dispelling myths and misconceptions surrounding steel rebars is crucial. Understanding their corrosion resistance, the role of size and placement, their versatility, the risks associated with electrical conductivity, and their cost-effectiveness will enable informed decision-making when it comes to reinforcing concrete structures.
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Deformed Steel Bar, Concrete Reinforcing Steel Rebars
- Ref Price:
-
- Loading Port:
- China main port
- Payment Terms:
- TT or LC
- Min Order Qty:
- 100 m.t.
- Supply Capability:
- 100000 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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