0.222kg/m BST500S 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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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.
- Q: How do steel rebars affect the fire resistance of concrete structures?
- Steel rebars can significantly enhance the fire resistance of concrete structures. The presence of steel rebars in concrete acts as reinforcement, providing added strength and stability to the structure. This reinforcement helps the concrete withstand the intense heat generated during a fire. The fire resistance of concrete structures is primarily due to the low thermal conductivity of concrete. When exposed to high temperatures, concrete undergoes a process called spalling, where the outer layer of the concrete breaks off due to the rapid expansion of water trapped within. However, the presence of steel rebars helps minimize spalling by holding the concrete together, preventing it from falling apart. Furthermore, steel rebars have a higher melting point compared to concrete. This means that even when exposed to extreme heat, the steel rebars retain their strength and integrity. As a result, the overall structural stability of the concrete structure is maintained, even under fire conditions. Steel rebars also act as a heat sink, absorbing and dissipating heat away from the surrounding concrete. This heat dissipation prevents localized hotspots from forming and spreading throughout the structure, minimizing the risk of structural failure. To improve the fire resistance of concrete structures further, special types of steel rebars, known as fire-resistant or fire-rated rebars, can be used. These rebars are specifically designed to withstand high temperatures for extended periods without losing their strength. They are often coated with materials such as epoxy or intumescent coatings that provide additional protection against fire. In conclusion, steel rebars play a crucial role in enhancing the fire resistance of concrete structures. Their presence improves the overall structural stability, minimizes spalling, dissipates heat, and provides added strength to withstand the intense heat generated during a fire.
- Q: Are there any restrictions on the use of steel rebars in certain regions?
- Yes, there can be restrictions on the use of steel rebars in certain regions due to building codes, regulations, and safety standards. These restrictions are typically implemented to ensure structural integrity, prevent corrosion, and comply with seismic requirements. It is important to consult local authorities and construction guidelines to determine specific restrictions in a particular region.
- Q: How do steel rebars affect the flexibility of a structure?
- Steel rebars can significantly enhance the flexibility of a structure. By reinforcing concrete, rebars improve its tensile strength, allowing it to withstand greater loads and prevent cracking or failure. This added strength and flexibility provided by steel rebars ensure that the structure can better adapt to various environmental forces, such as wind, earthquakes, and temperature changes, thus enhancing its overall resilience and durability.
- Q: How are steel rebars classified based on their diameter?
- Steel rebars are classified based on their diameter using a standardized system. The diameter of rebars is measured in millimeters and is denoted by a number. The most commonly used classification system for rebars is the "nominal diameter" system, where rebars are categorized into different sizes based on their diameter. The nominal diameter is expressed as a whole number, for example, 6, 8, 10, 12, etc. In this system, the nominal diameter represents the approximate diameter of the rebar in millimeters. For instance, a rebar with a nominal diameter of 8 has an approximate diameter of 8 millimeters. The diameter of rebars can range from as small as 6 millimeters to as large as 50 millimeters or more. It is important to note that the actual diameter of a rebar may vary slightly from its nominal diameter due to manufacturing tolerances. However, these variations are generally within an acceptable range. The classification of steel rebars based on their diameter is crucial in construction and engineering as it helps in determining the appropriate size and strength of rebars required for a specific application. Different diameters of rebars have different load-bearing capacities and are used accordingly in various structural elements such as beams, columns, slabs, and foundations. In summary, steel rebars are classified based on their diameter using a nominal diameter system, where the approximate diameter of the rebar is expressed as a whole number in millimeters. This classification aids in selecting the right size and strength of rebars for different construction purposes.
- Q: Are there any specific guidelines for handling and placing steel rebars in concrete?
- Yes, there are specific guidelines for handling and placing steel rebars in concrete. These guidelines include proper storage and handling of rebars to prevent damage, ensuring proper placement and spacing of rebars according to engineering drawings and specifications, and using appropriate tools and techniques for tying and securing the rebars in place. Additionally, it is important to follow best practices for concrete pouring and compaction to ensure proper bonding between the rebars and the concrete. Compliance with these guidelines is crucial to ensure the structural integrity and durability of the concrete structure.
- Q: Can steel rebars be used in road construction?
- Yes, steel rebars can be used in road construction. Steel rebars provide reinforcement and enhance the structural integrity of the road, making it more durable and capable of withstanding heavy traffic loads.
- Q: How do steel rebars affect the overall fire rating of a building?
- Steel rebars can have a positive impact on the overall fire rating of a building. By reinforcing concrete structures, rebars can help enhance the fire resistance of the building. Steel has high melting and ignition temperatures, which means it can withstand heat and maintain its structural integrity for longer periods during a fire. This additional durability provided by rebars can help prevent structural collapse, allowing occupants more time to evacuate safely and aiding firefighters in their efforts to suppress the fire.
- Q: What is the impact of steel rebars on the construction timeline?
- Steel rebars have a significant impact on the construction timeline as they play a crucial role in reinforcing concrete structures. By providing strength and durability, rebars ensure the structural integrity of buildings, bridges, and other infrastructure projects. However, their installation requires careful planning and coordination with other construction activities, which can sometimes cause delays in the overall timeline. Nevertheless, the use of rebars ultimately enhances the longevity and safety of the construction project, outweighing any temporary setbacks.
- Q: Can steel rebars be used in offshore oil and gas platform construction?
- Yes, steel rebars can be used in offshore oil and gas platform construction. They are commonly used to reinforce concrete structures in these platforms, providing strength and durability to withstand the harsh marine environment.
- Q: How do steel rebars prevent concrete structures from spalling?
- The reinforcement and increased strength provided by steel rebars prevent spalling in concrete structures. Spalling occurs when the concrete surface cracks and breaks off due to internal pressure from factors like temperature changes, moisture, or structural loads. When steel rebars are embedded in the concrete, they act as a support system that evenly distributes applied loads throughout the structure. This prevents localized stress concentrations, which can cause spalling, by absorbing and dissipating the load. By reinforcing the concrete, rebars enhance its ability to withstand external forces and improve its tensile strength. Furthermore, steel rebars help control crack formation in the concrete. Concrete is a brittle material with low tensile strength, making it prone to cracking under stress. However, rebars hinder crack propagation by bridging them and transferring the stress to the surrounding concrete. This prevents the cracks from spreading and results in a more durable and resilient structure. Additionally, steel rebars protect against corrosion. Concrete's natural alkalinity forms a protective layer on the steel surface, preventing rusting. This alkaline environment acts as a barrier against corrosion, ensuring the rebars maintain their structural integrity over time. By avoiding corrosion, the rebars can continue to reinforce the concrete and prevent spalling. In conclusion, steel rebars are essential in preventing spalling in concrete structures by providing reinforcement, improving tensile strength, controlling crack formation, and protecting against corrosion. They enhance the stability and durability of the concrete, allowing it to withstand external pressures and maintain its integrity for an extended period.
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0.222kg/m BST500S 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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