• 0.222kg/m BST500S deformed steel bar for construction System 1
  • 0.222kg/m BST500S deformed steel bar for construction System 2
  • 0.222kg/m BST500S deformed steel bar for construction System 3
  • 0.222kg/m BST500S deformed steel bar for construction System 4
0.222kg/m BST500S deformed steel bar for construction

0.222kg/m BST500S deformed steel bar for construction

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Loading Port:
Tianjin
Payment Terms:
TT OR LC
Min Order Qty:
25 m.t.
Supply Capability:
100000 m.t./month

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Product Applications:

Steel  Rebar Deformed Bar  High Quality Hot Rolled Steel 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 Steel  Rebar Deformed Bar  High Quality Hot Rolled Steel are durable, strong, and resist corrosion.

 

Main Product Features:

·         Premium quality

·         Prompt delivery & seaworthy packing (30 days after receiving deposit)

·         Corrosion resistance

·         Can be recycled and reused

·         Mill test certification

·         Professional Service

·         Competitive pricing

Product Specifications:

Product detail

Deformed  Steel  

1) Product name: Deformed Steel Bar

2) Standard and grade: a) GB1499-98 HRB335,HRB400,HRB500  b)BS4449-1997 GR460

3) Diameter: 8mm; 10mm; 12mm;14mm; 16mm;18mm; 20mm; 22mm; 25mm; 28mm; 30mm;  32mm; 40mm; 

4) Length: 9m, 12m 

5) Packing: Mill standard export packing in bundles, 2tons/bundle  or 2tons/coil.
6) Country of Origin :China
7) Applications:The products are widely used in construction, road, machinery processing, and welding fields.

8)Delivery Time :Within 20  days.

0.222kg/m BST500S deformed steel bar for construction

0.222kg/m BST500S deformed steel bar for construction

0.222kg/m BST500S deformed steel bar for construction

0.222kg/m BST500S deformed steel bar for construction

Q: How do steel rebars affect the overall longevity of a structure?
The overall longevity and durability of a structure can be greatly improved by the incorporation of steel rebars. These reinforced bars, which are made of high-strength steel, are strategically positioned within concrete structures to provide strength, stability, and resistance against external forces. The primary role of steel rebars is to bear the tensile forces that concrete alone cannot handle. While concrete possesses good compressive strength, it lacks tension strength. By integrating steel rebars into the concrete, the structure becomes considerably stronger and capable of withstanding different loads and stresses. The presence of rebars within a structure ensures that the applied load is evenly distributed throughout, preventing localized cracking or failure. This guarantees that the structure can support its own components as well as external loads like wind, earthquakes, or heavy machinery. Steel rebars also play a crucial part in preventing the formation and propagation of cracks within concrete. When exposed to environmental factors like temperature changes or moisture, concrete tends to expand and contract, resulting in crack development. However, the presence of rebars restricts the movement of the concrete, minimizing crack formation and size. This helps preserve the structural integrity of the building, preventing further deterioration and extending its overall lifespan. Furthermore, steel rebars exhibit high resistance to corrosion, which is a common issue in concrete structures exposed to harsh environments. Corrosion of rebars can lead to rust formation, weakening the steel and compromising the structure's strength. Nonetheless, rebars are typically coated with materials such as epoxy or galvanized coatings, acting as a protective barrier against corrosion. This ensures that the rebars remain in optimal condition, maintaining their strength and contributing to the long-term durability of the structure. In conclusion, steel rebars are vital components for enhancing the overall longevity of a structure. They provide additional strength, distribute loads, prevent cracks, and resist corrosion, significantly improving the structural integrity and durability of concrete structures. This guarantees their ability to withstand various forces and maintain functionality over time.
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: What is the average lifespan of steel rebars in marine environments?
The average lifespan of steel rebars in marine environments can vary depending on several factors. However, in general, steel rebars have a lifespan of around 50 to 100 years in marine environments. This estimate takes into account the corrosive nature of saltwater, which can accelerate the deterioration of steel structures. Additionally, factors such as the quality of the steel, the design and construction of the marine structure, and maintenance practices can also affect the lifespan of steel rebars. Regular inspections, protective coatings, and proper maintenance can help extend the life of steel rebars in marine environments.
Q: What are the weight and density of steel rebars?
Steel rebars, also known as reinforcing bars, are commonly used in construction to provide tensile strength to concrete structures. The weight and density of steel rebars can vary depending on their size and grade. The weight of a steel rebar is determined by its cross-sectional area and the specific weight of steel, which is approximately 7850 kilograms per cubic meter (or 0.2836 pounds per cubic inch). The cross-sectional area is typically measured in square millimeters or square inches. For example, a common size of steel rebar is the #4 bar, which has a diameter of 12.7 millimeters (or 0.5 inches) and a cross-sectional area of 127 square millimeters (or 0.197 square inches). Using the specific weight of steel, we can calculate the weight of a #4 rebar as follows: Weight = Cross-sectional area x Specific weight of steel Weight = 127 mm^2 x 7850 kg/m^3 Weight = 998,950 grams or approximately 998.95 kilograms (or 2,201 pounds) In terms of density, the density of steel rebars is the same as the specific weight of steel, which is approximately 7850 kilograms per cubic meter. This density is relatively consistent across different sizes and grades of steel rebars. It is important to note that the weight and density of steel rebars can vary slightly depending on the specific composition and manufacturing process. Therefore, it is always recommended to refer to the manufacturer's specifications or consult engineering references for accurate and up-to-date information.
Q: Can steel rebars be used in pre-stressed concrete construction?
No, steel rebars cannot be used in pre-stressed concrete construction. Pre-stressed concrete requires the use of high-strength steel cables or strands that are tensioned before the concrete is poured. This helps to counteract the expected tensile stresses and increase the overall strength and durability of the structure.
Q: What are the factors that determine the strength of steel rebars?
Several factors contribute to the strength of steel rebars. Firstly, the composition of the steel used in their manufacture plays a crucial role. The presence of elements like carbon, manganese, and silicon significantly impacts the steel's strength by enhancing its ability to resist tension and provide structural stability. Secondly, the manufacturing process of rebars influences their strength. Quenching and tempering, a process involving rapid cooling after heating, is typically employed to achieve the desired strength. The precise temperature and duration of this process affect the grain structure and chemical properties of the steel, thereby impacting the rebars' strength. The size and shape of rebars also affect their strength. The diameter and length of a rebar determine its load-bearing capacity. Thicker and longer rebars generally possess higher strength as they can withstand greater stress and distribute it more effectively. Furthermore, the presence of impurities or defects in the steel can weaken rebars. Cracks, voids, or inclusions compromise the structural integrity of the rebar and reduce its strength. Finally, environmental conditions must be considered when determining the strength of rebars. Factors like temperature, humidity, and exposure to corrosive substances can impact their strength over time. Taking precautions, such as using corrosion-resistant coatings or stainless steel rebars, is essential to ensure the longevity and strength of rebars in such environments. In conclusion, the strength of steel rebars depends on the composition of the steel, the manufacturing process, the size and shape of the rebars, the presence of defects, and the environmental conditions in which they will be used. Considering these factors is crucial to ensure the durability and reliability of steel rebars in construction applications.
Q: What are the guidelines for reinforcing concrete slabs with steel rebars?
The guidelines for reinforcing concrete slabs with steel rebars involve several key considerations. Firstly, it is important to determine the required amount of reinforcement based on the load that the slab will be subjected to. This load can be calculated using structural engineering principles and taking into account factors such as the intended use of the slab, the weight of any equipment or vehicles that will be placed on it, and any applicable building codes or regulations. Once the required amount of reinforcement is determined, the next step is to design the layout of the rebars. This involves spacing the rebars at specified intervals to ensure uniform distribution of the load across the slab. The spacing will depend on the thickness of the slab, with thicker slabs generally requiring a greater number of rebars. Additionally, it is important to include minimum clearances between the rebars and the edges or bottom of the slab to prevent corrosion and ensure proper concrete cover. The size and type of rebars used is also an important consideration. Commonly used types include plain round bars, deformed bars, or welded wire fabric. The diameter of the rebars and the grade of steel should be selected based on the expected load and the requirements of the project specifications or building codes. During the construction process, it is crucial to properly place and secure the rebars within the formwork to maintain their intended position. This may involve the use of chairs, spacers, or other devices to ensure proper alignment and prevent displacement. Additionally, care should be taken to avoid any damage to the rebars during the concrete pouring and finishing process. Finally, it is important to inspect and test the reinforced concrete slab to ensure that the rebars are properly installed and meet the required specifications. This may involve visual inspections, as well as non-destructive testing methods such as ultrasound or ground-penetrating radar to verify the integrity and position of the rebars. Overall, following these guidelines for reinforcing concrete slabs with steel rebars will help to ensure the structural integrity and longevity of the slab, while also meeting the necessary safety and building code requirements.
Q: How do steel rebars impact the overall constructability and scheduling of concrete projects?
The constructability and scheduling of concrete projects are greatly influenced by the presence of steel rebars. These reinforcing bars are essential for providing strength and stability to concrete structures, ensuring their durability and resilience. To begin with, the inclusion of steel rebars within the concrete significantly improves the overall structural integrity of the project, enhancing its constructability. By reinforcing and supporting the concrete, the rebars enable the construction of taller and more complex structures. They help distribute the load and withstand tension and compression forces, making the project more reliable. Furthermore, the presence of steel rebars facilitates the scheduling of concrete projects. When properly planned and incorporated, the rebars can expedite construction timelines. By integrating the rebars into the concrete formwork, construction teams can efficiently pour and shape the concrete, reducing the curing time required to achieve the desired strength. This directly affects project scheduling, enabling faster construction progress and potential cost savings. In addition, the utilization of steel rebars in concrete projects allows for flexibility in design and construction. The ability to customize the placement, size, and spacing of rebars ensures that the concrete structure meets specific design requirements and intended functionality. This flexibility becomes particularly crucial in projects that involve intricate architectural features or require specific load-bearing capacities. However, it is important to acknowledge that the proper installation and coordination of steel rebars can present challenges in terms of scheduling. To avoid delays, rebar installation must be carefully coordinated with other construction activities. Moreover, quality control measures are essential to ensure the accurate placement and alignment of rebars, as any errors or deficiencies can significantly impact the overall quality and safety of the project. In conclusion, steel rebars have a significant impact on the constructability and scheduling of concrete projects. They enhance the strength and stability of concrete structures, allowing for the construction of more intricate and robust designs. Additionally, the proper incorporation of rebars can expedite construction timelines and provide flexibility in project scheduling. However, careful planning, coordination, and quality control are necessary to ensure the successful integration of rebars in concrete projects.
Q: What are the standard sizes of steel rebars?
The standard sizes of steel rebars vary, but commonly available sizes range from #3 (3/8 inch diameter) to #11 (1 3/8 inch diameter). Rebars are typically sold in lengths of 20 or 40 feet.
Q: Are there any limitations on using steel rebars in cold climates?
Yes, there are some limitations on using steel rebars in cold climates. The main concern is the potential for corrosion due to the presence of moisture, salt, and de-icing chemicals commonly used on roads and bridges during winter. When steel rebars are exposed to these elements, they can rust and weaken over time, compromising the structural integrity of the concrete. To mitigate this issue, several measures can be taken. One common practice is to use epoxy-coated rebars, which provide a protective layer against moisture and chemicals. Additionally, stainless steel rebars can be used, as they are highly resistant to corrosion. However, these options can be more expensive than traditional steel rebars. Furthermore, the construction process in cold climates can also present challenges. Concrete cures and gains strength more slowly in low temperatures, which can impact the overall project timeline. Special precautions, such as heating the concrete or using accelerators, may be necessary to ensure proper curing. It is important to consult local building codes and regulations specific to cold climates to ensure compliance and safety. Engineering professionals experienced in cold weather construction practices can provide valuable insights and recommendations to address the limitations associated with using steel rebars in these conditions.

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