Hot Rolled Steel Rebar For Concrete System 1

Hot Rolled Steel Rebar For Concrete

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Payment Terms:: TT or LC

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Product Description:

OKorder is offering Hot Rolled Steel Rebar For 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:

Hot Rolled Steel Rebar For 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 Hot Rolled Steel Rebar For 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

Size: 6mm-25mm

Certificates: ISO, SGS, BV, CIQ

Length: 6m – 12m, as per customer request

Packaging: Export packing, nude packing, bundled

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
	Physics 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: How many tons of steel products could be loaded in containers?

A2: 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.

Q3: what is the difference between actual weight and theoretical weight?

A3: 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.

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Hot Rolled Steel Rebar For Concrete

Q: What are the listed companies that produce wire rod and thread steel?: The wire in iron and steel usually refers to a coil of wire material with a diameter of 5.5-14. Most of the use of wire coil machine rolled coil supply, it is also known as wire rod or coil. Wire rod is one of the varieties of steel with great dosage. After rolling, it can be directly used for reinforcement and welding structure of reinforced soil, and can also be used again and again. For example, by drawing into a variety of specifications of steel wire, steel wire rope, and then twisted into woven steel wire and winding and heat treatment to the spring; hot and cold forged into cold forging and rolling into rivets and bolts, screws and so on; by cutting into the heat treatment made of mechanical parts or tools; a common wire made of quality carbon steel and carbon steel.

Q: How are steel rebars installed in construction projects?: Steel rebars are installed in construction projects as a vital component of reinforced concrete structures. The process of installing steel rebars involves a series of steps. Firstly, the construction plans and specifications are reviewed to determine the required size, length, and placement of the rebars. This information is crucial to ensure the rebars provide the necessary strength and support to the structure. Next, the rebars are cut and shaped according to the specifications. This is typically done using specialized tools such as rebar cutters and benders. The rebars are usually supplied in long lengths and are cut to the required size on-site. Once the rebars are prepared, they are positioned and secured in the formwork or molds that will shape the concrete. This is done by placing the rebars at the desired locations and using wire or rebar ties to hold them in place. The ties are typically twisted around the rebars using pliers or a similar tool. This ensures that the rebars remain in their correct positions during the pouring and curing of the concrete. During the concrete pouring phase, the rebars are carefully positioned to ensure they are evenly distributed and adequately spaced. This is important for providing structural integrity and preventing the occurrence of weak spots in the concrete. After the concrete is poured, it is left to cure and harden. During this time, the rebars become embedded within the concrete, forming a strong bond. This bond creates a reinforced concrete structure that is capable of withstanding various loads and forces. In summary, the installation of steel rebars in construction projects involves cutting and shaping the rebars, positioning them correctly within the formwork, and securing them in place using ties. This process is crucial for creating reinforced concrete structures that are strong and durable.

Q: Are there any standards or codes for steel rebars?: Yes, there are indeed standards and codes for steel rebars. These standards and codes are essential to ensure the quality, safety, and compatibility of steel rebars used in various construction projects. One of the most widely recognized standards for steel rebars is the ASTM A615/A615M - Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement. This standard provides specific requirements for the physical and mechanical properties of steel rebars, such as chemical composition, yield strength, tensile strength, elongation, and bendability. It also includes guidelines for marking, packaging, and testing of rebars. In addition to ASTM A615/A615M, there are other relevant standards and codes used in different countries and regions. For example, in Europe, the European Standard EN 10080 - Steel for the Reinforcement of Concrete provides specifications for steel rebars, including dimensions, tolerances, and mechanical properties. Similarly, the British Standard BS 4449 - Steel for the Reinforcement of Concrete is widely used in the United Kingdom. These standards and codes not only ensure consistency in the manufacturing and production of steel rebars but also help architects, engineers, and construction professionals select the appropriate rebars for their projects. Compliance with these standards is crucial to guarantee the structural integrity, durability, and safety of reinforced concrete structures. It is important for stakeholders in the construction industry to be familiar with the relevant standards and codes for steel rebars and to consistently adhere to them. This helps to maintain high-quality construction practices and prevent potential failures or accidents due to substandard materials.

Q: Are steel rebars resistant to chemical exposure?: Yes, steel rebars are generally resistant to chemical exposure due to their inherent corrosion resistance properties. However, certain aggressive chemicals or environments can still cause corrosion over time, making it necessary to choose the right type of rebar or provide additional protective measures to ensure long-term durability.

Q: What is the effect of welding defects on the performance of steel rebars?: Welding defects can have a significant impact on the performance of steel rebars. These defects can weaken the structural integrity of the rebars, leading to potential failures and compromising the overall strength and durability of the construction project. One of the common welding defects is porosity, which is caused by the presence of gas pockets or voids in the weld. Porosity weakens the weld joint, reducing its load-bearing capacity and making it more susceptible to cracking or breaking under stress. This can result in a decreased resistance to external forces, such as the weight of the structure or seismic activities, leading to potential collapse or structural failure. Another welding defect is lack of fusion, which occurs when there is insufficient bonding between the base metal and the weld metal. This results in a weak joint that is prone to separation or cracking under load. Lack of fusion can lead to reduced mechanical strength and compromised structural performance, as the rebars may not be able to withstand the expected load or forces exerted on them. Furthermore, the presence of weld spatter or excessive weld reinforcement can also negatively affect the performance of steel rebars. Weld spatter refers to the undesirable splashes or droplets of molten metal that can adhere to the surface of the rebar, creating potential weak points. Excessive weld reinforcement, on the other hand, can add unnecessary weight to the rebar and create stress concentrations, further increasing the likelihood of failure. In summary, welding defects on steel rebars can significantly impact their performance by weakening the structural integrity, reducing load-bearing capacity, and increasing the susceptibility to cracking or breaking under stress. Therefore, it is crucial to ensure proper welding techniques and quality control measures are in place to minimize or eliminate these defects and ensure the safety and reliability of the construction project.

Q: Can steel rebars be used in wastewater treatment plants?: Yes, steel rebars can be used in wastewater treatment plants. Steel rebars are commonly used as reinforcement for concrete structures, including those found in wastewater treatment plants. The rebars provide strength and durability to the structures, ensuring they can withstand the harsh environments and corrosive nature of wastewater. However, it is important to select the appropriate grade of steel rebars that are resistant to corrosion caused by the chemicals present in wastewater.

Q: What are the guidelines for spacing steel rebars in reinforced concrete?: The guidelines for spacing steel rebars in reinforced concrete vary depending on the specific design and requirements of the project. However, some general guidelines include maintaining a minimum spacing between rebars to allow for proper concrete flow and consolidation during placement, typically ranging from 1.5 to 2.5 times the diameter of the bar. Additionally, rebars should be adequately spaced to ensure proper cover and to prevent overcrowding, which can hinder the structural integrity of the concrete. It is crucial to consult the project's structural engineer or refer to the relevant building codes and standards for specific spacing requirements.

Q: Are steel rebars fire resistant?: Steel rebars are generally considered to possess fire resistance. Steel, as a material, cannot burn or contribute to the spread of fire because it is incombustible. When exposed to fire, steel rebars can endure high temperatures for a prolonged duration without compromising their structural integrity. This ability is attributed to the high melting point of steel, which stands at approximately 1370 degrees Celsius (2500 degrees Fahrenheit). Moreover, during construction, steel rebars are often encased in concrete, which adds an extra layer of protection against fire. However, it is important to note that under extremely intense and long-lasting fire conditions, steel may gradually weaken and lose its ability to bear loads. Hence, fire protection measures like the application of fire-resistant coatings or fireproofing materials are sometimes implemented to further enhance the fire resistance of steel structures.

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: What are the guidelines for proper storage and transportation of steel rebars?: The guidelines for proper storage and transportation of steel rebars include keeping them off the ground to avoid moisture and corrosion, storing them in a well-ventilated area, organizing them in a neat and stable manner to prevent falling or shifting, protecting them from direct exposure to weather conditions, and securing them properly during transportation to avoid damage or accidents.

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