Deformed Rebars for Reinforcing Concrete
- Ref Price:
-
- Loading Port:
- China main port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 100 m.t.
- Supply Capability:
- 10000 m.t./month
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Quality Product, Order Online Tracking, Timely Delivery
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Product Description:
OKorder is offering Deformed Rebars for Reinforcing Concrete 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 Rebars for Reinforcing Concrete 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 Rebars for Reinforcing Concrete 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 Steel Bar | ||
Diameter (MM) | Cross Sectional Area (MM2) | Theorectical Weight (KG/M) |
6 | 28.27 | 0.222 |
8 | 50.27 | 0.395 |
10 | 78.54 | 0.617 |
12 | 113.1 | 0.888 |
14 | 153.9 | 1.21 |
16 | 201.1 | 1.58 |
18 | 254.5 | 2 |
20 | 314.2 | 2.47 |
22 | 380.1 | 2.98 |
25 | 490.9 | 3.85 |
28 | 615.8 | 4.83 |
32 | 804.2 | 6.31 |
36 | 1018 | 7.99 |
40 | 1257 | 9.87 |
FAQ:
Q1: How many tons of steel products could be loaded in containers?
A1: Usually the steel products are delivered by bulk vessel because of the large quantity and the freight. However, there are no bulk vessel enter some seaports so that we have to deliver the cargo by containers. The 6m steel product can be loaded in 20FT container, but the quantity is changed according to the size, usually from 18tons to 25tons.
Q2: How soon can we receive the product after purchase?
A2: 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.
Q3: How do we guarantee the quality of our products?
A3: 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.
Images:
- Q: How do steel rebars affect the overall crack control of concrete?
- The incorporation of steel rebars into concrete structures is crucial for crack control. Steel rebars significantly improve the otherwise low tensile strength of concrete. Tensile forces, such as drying shrinkage, temperature changes, or applied loads, tend to cause cracks in concrete. However, the presence of steel rebars helps mitigate and control these cracks. Rebars reinforce the concrete and provide additional strength. They resist tensile forces and prevent easy cracking of the concrete. When reinforced concrete is subjected to tensile forces, the rebars bear a significant portion of the load, reducing the stress on the concrete and minimizing crack formation. The bond between the steel rebars and the concrete is essential for crack control. This bond ensures effective transfer of tensile forces to the concrete, enhancing its overall crack resistance. Additionally, the bond helps distribute applied loads evenly, reducing the risk of localized cracking. Steel rebars also have the ability to control crack widths in concrete. By specifying the appropriate diameter, spacing, and arrangement of the rebars, engineers can influence crack widths to meet design requirements. The rebars act as barriers, limiting the width of cracks and maintaining the structural integrity of the concrete. In conclusion, steel rebars have a positive impact on crack control in concrete. They enhance the tensile strength, resist tensile forces, distribute loads, and limit crack widths. Incorporating steel rebars in concrete ensures durability and longevity of structures by effectively controlling crack formation and minimizing their negative consequences.
- Q: What are the factors that can cause steel rebars to corrode prematurely?
- There are several factors that can contribute to the premature corrosion of steel rebars. 1. Exposure to moisture: One of the primary causes of rebar corrosion is the presence of moisture. When steel rebars are exposed to water or high humidity levels for extended periods, it can lead to the formation of rust or oxidation on the surface of the rebar. 2. Chloride ions: Chloride ions, commonly found in seawater or de-icing salts, can accelerate the corrosion process of steel rebars. These ions can penetrate the concrete cover and come into contact with the rebar, causing it to corrode at a faster rate. 3. Carbonation of concrete: Carbonation occurs when carbon dioxide from the atmosphere reacts with the alkaline components of concrete. This process reduces the pH levels, leading to a decrease in the passivating effect of the concrete cover and increasing the likelihood of rebar corrosion. 4. Insufficient concrete cover: Inadequate concrete cover over the rebars can expose them to external elements, such as moisture and chloride ions, leading to accelerated corrosion. Insufficient cover may occur due to poor construction practices or inadequate design specifications. 5. Poor quality of concrete: If the concrete used in construction is of low quality, it may contain impurities or lack proper curing, resulting in an increased permeability of the concrete. This allows harmful substances like moisture and chlorides to penetrate the concrete more easily, leading to premature rebar corrosion. 6. Galvanic corrosion: When dissimilar metals come into contact in the presence of an electrolyte (such as moisture), a galvanic cell can form, resulting in accelerated corrosion. For example, if steel rebars are in contact with aluminum or copper materials, galvanic corrosion can occur. 7. Construction defects: Issues during the construction phase, such as poor workmanship or inadequate protective measures, can contribute to premature rebar corrosion. Examples include inadequate concrete compaction, improper reinforcement placement, or lack of proper waterproofing. To prevent premature corrosion of steel rebars, it is crucial to use high-quality materials, ensure proper concrete cover, employ corrosion-resistant coatings or inhibitors, and implement appropriate construction practices. Regular inspections and maintenance can also help identify and address any potential corrosion issues before they worsen.
- Q: How do steel rebars affect the bond strength between concrete and reinforcement?
- The bond strength between concrete and reinforcement is greatly improved by steel rebars, which play a vital role in this enhancement. When rebars are present in concrete structures, they create a mechanical interlock between the two materials, resulting in a bond that is not only stronger but also more durable. To begin with, the presence of rebars provides a larger surface area for the concrete to adhere to. The rough texture of the steel surface effectively allows the fresh concrete to bond, resulting in a strong bond. Additionally, this increased surface area helps to distribute loads more evenly, reducing stress concentrations and ultimately enhancing the overall structural integrity of the concrete. In addition, rebars act as a medium for transferring loads, ensuring that forces are effectively transmitted between the concrete and reinforcement. As concrete is typically weak in resisting tensile forces, the rebars bear these forces and effectively carry them across the concrete-rebar interface. This prevents cracks from spreading and helps to maintain the stability and strength of the structure as a whole. Furthermore, the presence of rebars helps to control cracking in concrete. When concrete undergoes shrinkage or experiences temperature variations, it tends to crack. However, with the presence of rebars, these cracks are limited or minimized. The rebars act as reinforcement, holding the concrete together and preventing the propagation of cracks. Moreover, steel rebars improve bond strength by providing anchorage. When rebars are embedded into the concrete, they create a mechanical connection that prevents the rebar from slipping or being pulled out. This anchorage ensures that the bond between the concrete and reinforcement remains intact, even under high loads or external forces. In summary, steel rebars significantly enhance the bond strength between concrete and reinforcement. They provide a larger surface area for adhesion, act as load transfer mediums, control cracking, and offer anchorage, resulting in a bond that is stronger and more durable. Their presence contributes to the overall stability and longevity of concrete structures.
- Q: What is the content ratio of the screw steel and manganese steel?
- The standard type of high manganese steel Mn13 steel and Hadfield steel, high manganese steel castings in China National Standard (GB/T5680-1998) grade: ZGMn13-1, ZGMn13-2, ZGMn13-3, ZGMn13-4, ZGMn13-5; ASTM (ASTMA128/A128M-1993) standard austenitic manganese steel casting steel are: ASTM-A (UNS-J9110.
- Q: How are steel rebars inspected for quality on construction sites?
- Steel rebars are critical components in construction projects, as they provide reinforcement and strength to concrete structures. Ensuring the quality of steel rebars is crucial to guarantee the safety and durability of the overall construction. To inspect the quality of steel rebars on construction sites, several methods are commonly employed. Visual Inspection: The first and most basic method of quality inspection involves visual examination of the rebars. This includes checking for any visible defects such as cracks, deformations, rust, or surface irregularities. Any rebars with such flaws are immediately identified and rejected. Measurement and Dimensional Checks: Steel rebars need to meet specific dimensional requirements as per project specifications and industry standards. Inspection personnel use measuring tools, such as calipers or tape measures, to verify the length, diameter, and other dimensions of the rebars. Any deviation from the specified tolerances may lead to rejection. Magnetic Particle Testing (MPT): MPT is a non-destructive testing method commonly used to detect surface and near-surface defects in steel rebars. This technique involves magnetizing the rebar and applying ferromagnetic particles, which accumulate at any surface defects or cracks. By carefully inspecting the surface, trained inspectors can identify any areas of concern. Ultrasonic Testing (UT): UT is another non-destructive testing method used for inspecting rebars. It involves the use of ultrasonic waves that are transmitted through the rebar. These waves reflect back differently when encountering any defects, such as voids, cracks, or inclusions. By analyzing the reflected waves, trained technicians can identify and assess the quality of the rebars. Tensile Testing: Tensile strength is a crucial factor in determining the quality of steel rebars. Tensile testing involves pulling a sample rebar until it breaks, measuring the force required to do so. This test helps determine the strength and ductility of the rebar, ensuring it meets the required standards. Chemical Analysis: Steel rebars are often subjected to chemical analysis to ensure they meet the specified composition requirements. Samples are collected from the rebars, and various tests are conducted to determine the chemical composition, including carbon, manganese, and other alloying elements. This analysis helps ensure the rebars possess the necessary properties for the intended application. All these inspection methods are typically conducted by qualified and experienced personnel, such as certified welding inspectors or quality control technicians. By employing these quality inspection procedures, construction sites can ensure that the steel rebars used in their projects meet the required standards, thereby ensuring the safety and longevity of the structures being built.
- Q: What are the safety precautions to take when working with steel rebars?
- To ensure your own safety and the safety of others when working with steel rebars, it is essential to adhere to various safety measures. Consider the following precautions: 1. Personal Protective Equipment (PPE): Safeguard yourself from potential hazards like falling objects, cuts, and burns by wearing appropriate PPE such as safety goggles, gloves, hard hats, and steel-toed boots. 2. Training and Awareness: Obtain adequate training and familiarize yourself with the potential risks associated with steel rebars. Educate both yourself and your team on proper procedures and safe handling techniques. 3. Secure Storage: Prevent accidents and falling rebars by storing them in a designated area. Stack them systematically, ensuring stability and avoiding areas with heavy foot traffic. 4. Lifting Techniques: Lift rebars properly by bending your knees and using your legs instead of your back. Avoid overexertion and seek assistance when necessary. 5. Handling Tools: Use appropriate tools like wire mesh gloves or pliers to handle rebars, reducing the risk of injuries caused by sharp edges or splinters. 6. Inspection: Regularly inspect rebars for defects like rust or sharp edges before using them. Discard and replace damaged or defective rebars. 7. Clear Work Area: Keep the work area organized and free from clutter, eliminating tripping hazards or obstacles that may cause accidents. 8. Communication: Maintain clear communication with team members, signaling your movements and when handling rebars. This helps prevent accidental collisions or injuries. 9. Fire Safety: Be mindful of fire hazards when working with rebars. Keep flammable materials away from the work area and have easily accessible fire extinguishers. 10. First Aid: Ensure a nearby first aid kit is available and familiarize yourself with basic first aid procedures in case of accidents or injuries. By adhering to these safety measures, the risk of accidents and injuries when working with steel rebars can be significantly reduced. Remember, prioritizing safety is always paramount in any work environment.
- Q: Can steel rebars be used in structures subjected to chemical exposure?
- Steel rebars can be used in structures subjected to chemical exposure, but it is essential to consider the type and concentration of chemicals involved. While steel is generally resistant to many chemicals, certain corrosive substances can cause degradation and compromise the integrity of the rebars. In such situations, it is crucial to select the appropriate grade of steel rebars that offer enhanced resistance to chemical corrosion. Stainless steel rebars, for example, contain a higher proportion of chromium and other alloying elements, providing superior resistance to a wide range of chemicals. These rebars are commonly used in structures exposed to aggressive chemical environments, such as wastewater treatment facilities, chemical plants, and marine structures. Additionally, protective coatings can be applied to steel rebars to further enhance their resistance to chemical exposure. Epoxy or polymeric coatings create a barrier that prevents direct contact between the rebar and the chemical, minimizing the risk of corrosion. These coatings are commonly used in structures exposed to chemicals like sulfuric acid or chloride ions. It is important to consult with structural engineers and corrosion specialists to determine the most suitable type of steel rebars and protective coatings for a particular chemical exposure scenario. Proper design, material selection, and maintenance practices are crucial to ensure the long-term durability and safety of structures in chemically aggressive environments.
- Q: Are there any limitations on the maximum length of steel rebars used in construction?
- Yes, there are limitations on the maximum length of steel rebars used in construction. The maximum length of steel rebars can vary depending on various factors such as the structural design, construction codes, and transportation limitations. In general, the length of steel rebars is limited by practical considerations such as handling, transportation, and installation. Very long rebars can be difficult to transport and maneuver on construction sites. Additionally, excessively long rebars may be more prone to bending or sagging, which can affect their structural integrity. Therefore, construction industry standards and codes typically provide guidelines or restrictions on the maximum length of steel rebars to ensure their safe and efficient use in construction projects. It is important for architects, engineers, and contractors to adhere to these limitations to ensure the structural stability and safety of the building.
- Q: How do steel rebars help in load distribution within a structure?
- Steel rebars, also referred to as reinforcing bars, are essential for the distribution of loads within a structure. They are extensively utilized in concrete structures, like buildings, bridges, and highways, to enhance their strength and durability. The main objective of steel rebars is to provide tensile strength to the concrete. While concrete is highly capable of withstanding compression, it is relatively frail when it comes to tension. Any structure exposed to loads, whether from the weight of the building itself or external forces, will encounter both compression and tension forces. By incorporating steel rebars into the concrete, they act as reinforcements and resist tensile forces. When an external load is applied to the structure, the rebars bear a significant portion of the generated tension forces. This prevents the concrete from cracking or failing under the applied load. Furthermore, steel rebars aid in the distribution of the load throughout the structure. When a load is imposed on a structure, it generates stress that is spread across the various components. The presence of rebars enables a more uniform distribution of these stresses, reducing the concentration of forces in specific areas. This prevents localized failures and ensures that the load is evenly dispersed across the structure, thereby improving its overall strength and stability. Another crucial aspect of steel rebars is their capacity to bond with concrete. The rough surface of the rebars prevents them from slipping or separating from the concrete, ensuring a robust bond between the two materials. This bond further enhances the distribution of loads by enabling the rebars to effectively transfer the tensile forces to the surrounding concrete. In conclusion, steel rebars play a critical role in the distribution of loads within a structure. They furnish the necessary tensile strength to withstand tension forces, distribute the load evenly across the structure, and bond with the concrete, guaranteeing a sturdy and stable construction. Without steel rebars, concrete structures would be considerably weaker and more prone to cracking or failure under load.
- Q: How do steel rebars affect the overall load-bearing capacity of a structure?
- The load-bearing capacity of a structure is greatly enhanced by steel rebars. These reinforcing bars are commonly added to concrete structures, such as beams, columns, and slabs, to add strength and durability. The main purpose of rebars is to resist tensile forces, which concrete alone cannot effectively handle. By embedding steel rebars in the concrete, the structure's overall load-bearing capacity significantly increases. When the structure is subjected to a load, the rebars evenly distribute the forces, preventing cracks and reducing the risk of structural failure. This reinforcement improves the structure's ability to withstand heavy loads, including the weight of the building, furniture, occupants, and external forces like wind and earthquakes. Additionally, rebars help control and limit the spread of cracks within the concrete. Concrete is strong in compression but weak in tension, so without rebars, it would easily crack under tensile stress. The rebars act as a reinforcement, absorbing some of the tensile forces and preventing the cracks from expanding, thus maintaining the overall strength of the structure. Furthermore, steel rebars enhance the ductility of the structure. Ductility refers to a material's ability to deform without breaking. When a structure experiences excessive loads or external factors cause deformation, the rebars absorb and dissipate the energy, allowing the structure to deform in a controlled manner instead of collapsing suddenly. To sum up, steel rebars significantly improve the load-bearing capacity of a structure by providing tensile strength, preventing crack propagation, and enhancing ductility. By reinforcing the concrete, rebars ensure that the structure can withstand heavy loads, increasing its strength, durability, and overall safety.
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Deformed Rebars for Reinforcing Concrete
- Ref Price:
-
- Loading Port:
- China main port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 100 m.t.
- Supply Capability:
- 10000 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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