ASTM A615 deformed steel bar for construction
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 100000 m.t./month
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Usage and Applications of Construction
1. Construction steel round bar is mostly used for straight bundles supply, and used for steel, bolts and various mechanical parts. While the bigger round bar, or more than 25mm hot rolled bar, is mainly for the manufacture of mechanical parts or for seamless steel billet.
2. Steel round bar is used in construction and a large number of architectural and engineering structures.
3. Besides, we can supply some especial material steel round bar that can be used for main shaft of steamer, hummer shank, with big section and supper force.
Packaging & Delivery
Packaging Detail: All goods are packed in bundle with steel strips and shipped by break bulk vessel or container (depend on target market and different ports)
Delivery Detail: 45 days
Trade terms: FOB, CFR, CIF
MOQ: 25 tons per specification; we can negotiate the quantity if the specification is normal or we have stock of one specification.
Weight: Theprice invoicing on theoretical weight basis or actual weight basis depends on customer’s request.
Shipment: The shipment of bulk break or container is depends on customer’s request and the situation of the port of destination.
Documents given: Full set of original clean on board bill of lading; Original signed commercial invoice; Original packing list; Policy of insurance; Certificate of origin and what the target market needs.
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 precautions to be taken while welding steel rebars?
- When welding steel rebars, there are several precautions that need to be taken to ensure safe and effective welding: 1. Proper ventilation: Welding generates fumes and gases that can be harmful if inhaled. Therefore, it is important to work in a well-ventilated area or use exhaust systems to remove the fumes and maintain a safe breathing environment. 2. Personal protective equipment (PPE): Welders should always wear appropriate PPE, including a welding helmet or face shield, safety glasses, welding gloves, flame-resistant clothing, and steel-toed boots. This protective gear helps minimize the risk of burns, eye injuries, and other physical hazards. 3. Fire prevention: Welding involves intense heat and sparks, which can ignite flammable materials. Before starting the welding process, ensure that the work area is clear of any combustible materials, and have a fire extinguisher nearby. It is also advisable to have a fire watch person present to monitor the area for any potential fire hazards. 4. Grounding: Proper grounding is essential to prevent electrical shocks during welding. Ensure that the welding machine is properly grounded, and the workpiece is connected to a reliable grounding point. 5. Preparing the surface: Before welding, the surfaces of the rebars should be clean and free from any oils, grease, dirt, or rust. Use a wire brush or grinder to remove any contaminants, as they can affect the quality of the weld. 6. Welding technique: Employing the correct welding technique is crucial for achieving strong and reliable welds. Follow the recommended welding parameters, such as the appropriate current, voltage, and electrode diameter, to ensure optimal results. It is also important to maintain a steady hand and a consistent travel speed to prevent weld defects. 7. Training and experience: Welding steel rebars requires skill and knowledge. Ensure that the welder is properly trained and experienced in working with rebars. This will help minimize errors and ensure that the welds meet the required standards and specifications. By adhering to these precautions, welders can significantly reduce the risk of accidents, injuries, and subpar weld quality when working with steel rebars.
- Q: How are steel rebars stored on site to prevent damage?
- Steel rebars are typically stored on site in a well-organized manner, ensuring they are protected from damage. They are usually placed on elevated racks or pallets to prevent contact with the ground and potential moisture. Additionally, rebars are stored horizontally and separated by wooden spacers to prevent corrosion and tangling. Lastly, they are often covered with a tarp or plastic sheeting to shield them from rain or other environmental factors that could cause damage.
- Q: How do steel rebars affect the constructability of projects in environmentally sensitive areas?
- Projects in environmentally sensitive areas can be influenced both positively and negatively by the use of steel rebars. On the positive side, steel rebars are widely utilized in construction due to their strength and durability. They enhance the safety and stability of buildings and infrastructure, which is crucial in areas prone to high wind or seismic activity. By enabling the construction of resilient foundations and reinforcements, steel rebars reduce the risk of environmental damage. Additionally, the sustainability of projects in environmentally sensitive areas can be enhanced through the use of steel rebars. These rebars are highly recyclable, reducing the need for new raw materials and minimizing the environmental impact of resource extraction and processing. Incorporating steel rebars into construction projects can effectively reduce the carbon footprint, aligning with environmental conservation goals. However, there are also negative implications associated with steel rebars in environmentally sensitive areas. The production of steel emits greenhouse gases, contributing to climate change, which can harm fragile ecosystems and vulnerable species. Furthermore, the extraction of iron ore for steel production can lead to habitat destruction and deforestation, further impacting the environment. The transportation of steel rebars to construction sites in environmentally sensitive areas can also present challenges. It often requires the use of heavy machinery and vehicles, which if not properly managed, can cause soil compaction and erosion. This disturbance can disrupt natural habitats and affect the water quality of nearby rivers and streams. In conclusion, while steel rebars offer numerous benefits to projects in environmentally sensitive areas, they also present environmental challenges. It is crucial for construction companies and project stakeholders to carefully consider the sourcing, production, and transportation of steel rebars. Exploring alternative construction materials and techniques with lesser impact on the environment, as well as adopting sustainable practices like recycling steel rebars and reducing carbon emissions, can improve the constructability of projects in environmentally sensitive areas while mitigating their potential negative effects on the environment.
- Q: What are the guidelines for ensuring proper bond between steel rebars and concrete?
- Ensuring a strong bond between steel rebars and concrete is vital for the structural integrity and performance of reinforced concrete structures. To achieve this, the following guidelines should be followed: 1. Correct Placement of Rebars: The rebars must be positioned according to the design specifications, including the required spacing, cover, and lap lengths. It is important to maintain the appropriate spacing between rebars and the concrete surface to provide sufficient concrete cover and prevent corrosion. 2. Thorough Surface Preparation: The steel rebars should be free from loose rust, scale, or contaminants that could hinder the bond with the concrete. Effective surface preparation techniques such as wire brushing, sandblasting, or using a high-pressure water jet can be used to clean the rebars. 3. Mechanical Bond: Ribbed or deformed rebars offer a better mechanical bond with concrete compared to smooth bars. The surface deformations increase the contact area between the rebar and the concrete, thereby enhancing the bond strength. 4. Proper Embedment Length: The embedment length, also known as the development length, is the distance over which the rebar is embedded in the concrete. It is typically calculated based on the required bond strength, concrete strength, and rebar diameter. Adequate embedment length is essential for achieving the desired bond performance. 5. High-Quality Concrete: The quality of concrete, including its strength, workability, and curing, plays a crucial role in achieving a proper bond with steel rebars. The concrete mix should be proportioned correctly, ensuring sufficient cement content, appropriate water-to-cement ratio, and proper compaction during placement. 6. Sufficient Concrete Cover: Adequate concrete cover should be provided around the rebars to protect them from environmental factors, prevent corrosion, and ensure long-term durability. The concrete cover is typically specified in design codes and should be maintained during construction. 7. Proper Reinforcement Splicing: When connecting multiple rebars, proper splicing techniques should be used to ensure a continuous and strong bond. Lap splices, mechanical couplers, or welded splices can be employed based on the design requirements and project specifications. 8. Effective Vibration Techniques: During concrete placement, proper vibration techniques should be employed to ensure adequate compaction and minimize voids or honeycombs around the rebars. This helps to achieve a better bond between the steel rebars and the surrounding concrete. 9. Prevention of Contamination: The rebars should be protected from contamination during storage and construction. Exposure to excessive moisture, chemicals, or other corrosive substances can compromise the bond between the rebars and the concrete. 10. Adherence to Design Specifications: Lastly, it is crucial to strictly adhere to the design specifications and recommendations provided by structural engineers or relevant design codes. These guidelines are tailored to ensure a proper bond between steel rebars and concrete, considering factors such as loadings, environmental conditions, and durability requirements.
- Q: How do steel rebars prevent the concrete from cracking under tension?
- Steel rebars prevent concrete from cracking under tension by providing reinforcement and increasing the structural integrity of the concrete. When concrete is subjected to tensile forces, it tends to crack due to its low tensile strength. However, when steel rebars are embedded within the concrete, they act as a reinforcement by absorbing and distributing the tensile forces. The steel rebars, which are typically made of high-strength steel, have a much higher tensile strength compared to concrete. This means that when the concrete is subjected to tension, the rebars bear most of the load, preventing the concrete from cracking. The rebars act as a framework or skeleton within the concrete, resisting the tensile forces and ensuring the structural stability of the concrete. Moreover, the bond between the steel rebar and the concrete also contributes to preventing cracking under tension. The ribbed or deformed surface of the rebars enhances the bond with the surrounding concrete, creating a strong connection. This bond allows the rebars to transfer the tensile forces to the concrete matrix more effectively, reducing the risk of cracking. By reinforcing the concrete, steel rebars help to distribute the tensile forces more evenly throughout the structure. This prevents localized stress concentrations and minimizes the chances of cracks forming. Additionally, the presence of rebars can also help control crack propagation if cracks do occur, as they act as barriers that restrict the cracks from spreading further. In summary, steel rebars prevent concrete from cracking under tension by providing reinforcement and increasing the overall strength of the concrete structure. They bear the tensile forces, distribute them evenly, and enhance the bond between the rebar and the concrete. This reinforcement ensures the structural integrity of the concrete and helps prevent cracking.
- Q: How do steel rebars provide reinforcement to concrete?
- Steel rebars provide reinforcement to concrete by adding strength and durability to the structure. When embedded within the concrete, rebars act as tension members, resisting forces that would otherwise cause cracking or failure. The high tensile strength of steel rebars helps to distribute and absorb load, enhancing the overall structural integrity of the concrete.
- Q: What is the impact of steel rebars on the overall thermal performance of a building?
- Steel rebars have a minimal impact on the overall thermal performance of a building. Since steel is a good conductor of heat, it can slightly increase heat transfer through the walls or floors where rebars are present. However, the thermal conductivity of steel is relatively low compared to other building materials, such as concrete or glass, so the overall impact on the building's thermal performance is generally limited. Proper insulation and design considerations can mitigate any potential heat loss or gain caused by steel rebars.
- Q: How do steel rebars distribute loads in concrete structures?
- Steel rebars distribute loads in concrete structures by providing reinforcement and increasing the tensile strength of the concrete. The rebars are typically placed in the concrete in a grid-like pattern, creating a network of support throughout the structure. When the concrete is subjected to external loads, such as the weight of the building or the force of an earthquake, the rebars help distribute the load more evenly across the structure. This prevents the concrete from cracking or failing under the stress. Rebars work by transferring the tensile forces to the surrounding concrete. While concrete is strong in compression, it is relatively weak in tension. The rebars act as a reinforcement, resisting the tensile forces and preventing the concrete from cracking. When a load is applied to the structure, the rebars bear a portion of the load and distribute it to adjacent rebars and the surrounding concrete, effectively increasing the overall strength and stability of the structure. The distribution of loads in concrete structures is also influenced by the spacing and diameter of the rebars. Properly spacing the rebars ensures that the load is evenly distributed, minimizing the risk of localized stress concentration. The diameter of the rebars also plays a role in load distribution, as larger diameter rebars can withstand higher loads and provide more reinforcement. In addition to load distribution, steel rebars also help control the propagation of cracks within the concrete. When cracks do occur, the rebars help prevent them from spreading by transferring the stress around the cracked area and maintaining the structural integrity of the concrete. Overall, steel rebars play a critical role in distributing loads in concrete structures by providing reinforcement, increasing tensile strength, and controlling crack propagation. Their strategic placement and proper sizing ensure that the loads are evenly distributed, enhancing the durability and longevity of the structure.
- Q: What is the role of steel rebars in preventing structural collapse?
- Steel rebars play a crucial role in preventing structural collapse by reinforcing concrete structures. Concrete, although strong in compression, is relatively weak in tension. This is where steel rebars come into play, as they effectively enhance the tensile strength of the concrete. When structural loads are applied to a building or other concrete structure, the rebars distribute the load across a wider area, preventing the concrete from cracking and failing under the stress. By providing a means for the concrete to resist tension and bending forces, steel rebars help maintain the integrity and stability of the structure. In addition to improving tensile strength, rebars also enhance the overall ductility and flexibility of the concrete. This is critical during events such as earthquakes or high winds, where structures need to withstand significant lateral forces. The presence of rebars helps the concrete to absorb and dissipate these forces, reducing the risk of structural failure. Moreover, steel rebars also prevent structural collapse by resisting the effects of corrosion. When embedded in concrete, rebars are protected from moisture and other corrosive elements, ensuring their long-term durability and ability to support the structure. In summary, steel rebars are essential components in preventing structural collapse. They reinforce concrete structures, enhance tensile strength, improve ductility, resist corrosion, and ultimately contribute to the overall safety and stability of buildings and other concrete constructions.
- Q: What are the guidelines for the proper anchoring of steel rebars in columns?
- The guidelines for the proper anchoring of steel rebars in columns typically include ensuring that the rebars are adequately spaced, have sufficient embedment length, and are securely tied or welded to the column reinforcement. Additionally, the rebars should be properly aligned and centered within the column, and any required cover or protective measures should be implemented to prevent corrosion or damage. It is crucial to follow the specific design and code requirements for the project to ensure the structural integrity and safety of the reinforced concrete column.
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ASTM A615 deformed steel bar for construction
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 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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