Basic Mild Steel Deformed Bar

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Loading Port:: China Main Port

Payment Terms:: TT OR LC

Min Order Qty:: -

Supply Capability:: -

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Usage and Applications of HRB400 Deformed Steel Bar:

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 HRB400 Deformed Steel Bar:

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.

Each bundle weight: 2-3MT, or as required

Payment term: TT or L/C

Delivery Detail: within 45 days after received advanced payment or LC.

Label: to be specified by customer, generally, each bundle has 1-2 labels

Trade terms: FOB, CFR, CIF

Cold Rolled Techniques

Yield Point: 545-565mpa

Q: What is the effect of exposure to chemicals on steel rebars?: Exposure to chemicals can have various effects on steel rebars depending on the specific chemical involved. Corrosive chemicals, such as acids or salts, can cause corrosion and weaken the steel rebars over time. This can compromise the structural integrity of reinforced concrete structures, leading to potential safety hazards. On the other hand, some chemicals like epoxy or protective coatings can be applied to steel rebars to enhance their resistance to corrosion and extend their lifespan. Overall, the effect of exposure to chemicals on steel rebars can range from degradation to protection, highlighting the importance of proper material selection and maintenance in construction projects.

Q: What is the weight of steel rebars per meter or foot?: The weight of steel rebars per meter or foot can vary depending on the size and type of rebar being used. On average, a mild steel rebar typically weighs around 0.44 pounds per foot or 0.67 kilograms per meter. However, it is important to note that different rebar sizes and compositions can result in different weights.

Q: How do steel rebars contribute to the overall fire resistance of a structure?: Enhancing the fire resistance of a structure, steel rebars, also known as reinforcing bars, play a vital role. They contribute to the overall fire resistance in various ways. Primarily, steel rebars are made from a material renowned for its high melting point and exceptional heat resistance. As a result, even in the event of a fire, the rebars maintain their structural integrity and do not easily deform or collapse. This is especially crucial for tall buildings where temperatures can reach extreme levels during a fire. Furthermore, the presence of steel rebars aids in the even distribution of heat throughout the structure. When exposed to high temperatures, steel absorbs and conducts heat away from the fire source, preventing concentrated hotspots and reducing the risk of structural failure. This redistribution of heat helps maintain the stability and integrity of the building, allowing occupants valuable time to safely evacuate. Moreover, steel rebars are commonly embedded within concrete, forming a composite material called reinforced concrete. The combination of steel and concrete creates a synergistic effect in terms of fire resistance. While steel possesses high tensile strength, concrete exhibits excellent compressive strength. When exposed to fire, the concrete acts as a protective layer, slowing down the transfer of heat to the steel rebars. This delay in heat transfer enables the steel to retain its strength for a longer period, further enhancing the fire resistance of the structure. Additionally, steel rebars aid in preventing the spread of fire by creating compartments within the building. In the event of a fire, the reinforced concrete structure acts as a barrier, limiting the fire's ability to spread from one area to another. This containment of fire reduces potential damage and facilitates the effective control and extinguishing of the fire by emergency responders. In conclusion, steel rebars make a significant contribution to the overall fire resistance of a structure. Their high melting point, ability to redistribute heat, and combination with concrete create a dependable and durable fire-resistant system. By providing structural stability, preventing concentrated hotspots, and limiting the spread of fire, steel rebars play a critical role in ensuring the safety and protection of both the building and its occupants during a fire incident.

Q: What are the different types of steel rebars used in dam constructions?: In dam constructions, different types of steel rebars are utilized, each possessing specific properties and applications. The commonly employed variants consist of: 1. Mild Steel Rebars, which are manufactured using low carbon steel. Due to their affordability and availability, they find extensive use in dam constructions. Although they exhibit good tensile strength, their resistance to corrosion is relatively low. 2. High Strength Deformed (HSD) Steel Rebars, on the other hand, are crafted from carbon steel and incorporate additional alloys like vanadium or manganese. These rebars offer heightened tensile strength and superior corrosion resistance when compared to their mild steel counterparts. They are typically employed in critical areas of the dam structure that demand enhanced strength. 3. Epoxy-Coated Rebars, as the name suggests, involve the application of an epoxy coating to enhance their resistance to corrosion. This protective layer acts as a barrier against moisture and chemicals, thereby minimizing the risk of corrosion. Epoxy-coated rebars are frequently employed in dam constructions that anticipate exposure to harsh environmental conditions. 4. Stainless Steel Rebars are characterized by their remarkable resistance to corrosion and are typically used in dam constructions that involve aggressive environments such as saltwater or chemical-laden water. Although they are more expensive than other types of rebars, they offer unparalleled durability. 5. Galvanized Rebars, which are coated with a layer of zinc, exhibit excellent corrosion resistance. They are commonly employed in dam constructions where the structure will encounter water or moisture for extended periods. The selection of the most suitable type of steel rebar for dam construction is contingent upon various factors, including the specific project requirements, anticipated environmental conditions, and budgetary constraints. An engineering team will meticulously assess these factors in order to determine the optimal type of steel rebar that ensures the longevity and structural integrity of the dam.

Q: What are the guidelines for proper curing of concrete structures with steel rebars?: To ensure the strength, durability, and longevity of concrete structures with steel rebars, it is crucial to properly cure them. Here are some guidelines to consider: 1. Moisture Control: Maintaining a moist environment around the concrete structure is vital during the curing process. This can be done by either covering the concrete surface with a plastic sheet or using a curing compound. These measures prevent water evaporation, which can lead to shrinkage, cracking, and reduced strength. 2. Curing Duration: The duration of curing depends on factors like the concrete mix, environmental conditions, and the complexity of the structure. Generally, curing should last at least 7 days to allow sufficient strength development. However, for structures with steel rebars, it is advisable to extend the curing period to 14-28 days to ensure proper hydration and bonding between the concrete and steel. 3. Temperature Control: Temperature plays a crucial role in the curing process. Avoiding extreme temperature fluctuations is important as they can negatively affect concrete strength and durability. High temperatures can cause rapid drying and shrinkage, leading to cracks. Freezing temperatures can impede hydration. Therefore, maintaining a moderate and consistent temperature is essential for effective curing. 4. Protection from External Factors: During the curing period, concrete structures should be shielded from external factors that can compromise their integrity. This involves avoiding direct sunlight, rain, strong winds, or any adverse weather conditions. Additionally, protecting the concrete from potential damage caused by construction activities or heavy loads is vital. 5. Regular Inspection and Maintenance: Regularly inspecting the concrete structure throughout the curing process is necessary to identify issues like cracks, honeycombing, or inadequate curing. Any problems should be addressed promptly to prevent further damage. Once the curing process is complete, implementing a proper maintenance plan is crucial to ensure long-term durability and structural integrity. By adhering to these guidelines, the proper curing of concrete structures with steel rebars can be achieved, resulting in strong, durable, and dependable construction.

Q: Can steel rebars be used in marine construction projects?: Yes, steel rebars can be used in marine construction projects. However, it is essential to use corrosion-resistant steel rebars, such as stainless steel rebars or epoxy-coated rebars, to ensure durability and prevent corrosion caused by exposure to saltwater and other marine environments.

Q: Can steel rebars be used in underground parking structures?: Yes, steel rebars can be used in underground parking structures. They are commonly used in the construction of reinforced concrete structures, including underground parking decks, to provide additional strength and durability to the concrete. Steel rebars help to reinforce the concrete and enhance its load-bearing capacity, making them essential components in underground parking structures.

Q: Can steel rebars be bent on site?: Yes, steel rebars can be bent on site.

Q: Are steel rebars suitable for high-rise buildings?: Yes, steel rebars are highly suitable for high-rise buildings. Steel rebars provide excellent tensile strength and reinforcement to concrete structures, making them ideal for withstanding the heavy loads and stresses experienced in tall buildings. Additionally, steel rebars offer durability, flexibility, and cost-efficiency, making them a preferred choice in constructing high-rise buildings.

Q: Can steel rebars be used in fire-resistant structures?: Yes, steel rebars can be used in fire-resistant structures. Steel has a high melting point and retains its strength even at high temperatures. However, to enhance fire resistance, additional measures such as fireproof coatings or concrete encasement may be necessary.

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