Hot Rolled Deformed Steel Rebars ASTM, GB HRB400, HRB500
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- Loading Port:
- Lianyungang
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 200000 m.t./month
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Specifications of Hot Rolled Deformed Steel Rebars ASTM, GB HRB400, HRB500:
Standard | GB UK USA | HRB335 HRB400 HRB500 G460B, B500A, B500B,B500C GR40, GR60 | |
Diameter | 6mm,8mm,10mm,12mm,14mm,16mm,18mm,20mm, 22mm,25mm,28mm,32mm,36mm,40mm,50mm | ||
Length | 6M, 9M,12M or as required | ||
Payment terms | TT payment in advance or Irrevocable LC at sight. | ||
Each bundle weight | 2-3MT, or as required | ||
Trade terms | FOB, CFR, CIF | ||
Delivery Detail | within 45 days after received advanced payment or LC. | ||
Type | Hot rolled steel rebar | ||
Brand name | DRAGON | ||
Chemical Composition: (Please kindly find our chemistry of our material based on BS4449 as below for your information)
BS4449 500B | Chemical Composition | ||||
C | Mn | Si | S | P | |
0.24 | 0.45 | 0.16 | 0.05 | 0.31 | |
Physical capability | |||||
Yield Strength(N/cm²) | Tensile Strength(N/cm²) | Elongation (%) | |||
650 | ≥500 | 19 | |||
Deformed Steel Rebars in stock
Usage and Applications of Hot Rolled Deformed Steel Rebars ASTM, GB HRB400, HRB500:
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 Hot Rolled Deformed Steel Rebars ASTM, GB HRB400, HRB500:
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.
Price:Keep lower operating costs so as to offer competitive price for our clients
Label:to be specified by customer, generally, each bundle has 1-2 labels
Invoice:Actual or Theoretical Weight Basis as buyer’s request.
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: How are steel rebars used in the construction of airports?
- Steel rebars are used in the construction of airports to reinforce and strengthen concrete structures such as runways, taxiways, terminal buildings, and other infrastructure. These rebars are embedded within the concrete to provide tensile strength and prevent cracking, ensuring the structural integrity and durability of the airport facilities.
- Q: What are the common problems associated with steel rebars in concrete structures?
- Steel rebars in concrete structures can encounter numerous issues, including corrosion, inadequate cover, improper placement, and improper anchorage. Corrosion is a major concern as it weakens rebars when they are exposed to moisture and oxygen, particularly in coastal areas or regions with high humidity. This can lead to structural deterioration and reduced load-bearing capacity. Insufficient concrete cover over rebars, known as inadequate cover, is another problem. This can arise from construction practices or design errors. Inadequate cover increases the risk of corrosion as the rebars are exposed to external elements. It can also compromise the concrete's structural integrity, especially in terms of fire resistance and durability. Improper placement of rebars can also cause issues. If they are not aligned or spaced correctly according to design specifications, weak sections can form within the concrete. This can lead to uneven load distribution and potential structural failure. It can also diminish the effectiveness of rebars in reinforcing the concrete, compromising the overall strength of the structure. Improper anchorage of rebars is a common problem as well. Adequate anchorage is crucial for transferring loads between different sections of the concrete structure. If rebars are not properly anchored, they may slip or pull out under stress, reducing the structural strength and stability of the concrete. To address these problems, it is vital to implement proper construction practices and adhere to design specifications. This includes ensuring sufficient concrete cover, accurate placement and alignment of rebars, proper anchorage, and the use of corrosion-resistant rebars or protective coatings in corrosive environments. Regular inspections and maintenance are also necessary to detect and address any potential issues with steel rebars in concrete structures.
- Q: How are steel rebars spliced or connected in construction joints?
- Various methods are used to splice or connect steel rebars in construction joints, ensuring the integrity and strength of reinforced concrete. A common method is lap splicing, where rebars are overlapped and then mechanically connected or tied together with steel wires or couplers. The required overlap length for lap splicing depends on the rebar diameter and design specifications, often specified as a multiple of the diameter. This length guarantees efficient load transfer and prevents potential failures at the connection point. Mechanical couplers offer an alternative method for splicing rebars. These pre-fabricated devices securely connect two rebars, eliminating the need for lap splicing and providing a more precise and reliable connection. Mechanical couplers are particularly useful when dealing with larger rebar sizes or when long lap lengths are not feasible. In certain cases, welded splicing may be used. This method involves welding the ends of rebars together, creating a solid and continuous connection. Welded splicing is commonly employed when dealing with larger diameter rebars and higher load requirements. However, it is crucial to adhere to proper welding techniques and practices to maintain the connection's integrity. Overall, the splicing or connection of steel rebars in construction joints is a crucial aspect of reinforced concrete construction. It ensures that rebars function as continuous reinforcement, enabling structures to effectively resist applied loads. The choice of splicing method depends on factors such as rebar size, design specifications, and project requirements.
- Q: What are the factors to consider while designing a reinforced concrete structure with steel rebars?
- There are several factors to consider while designing a reinforced concrete structure with steel rebars. Firstly, the structural loads acting on the building, such as dead loads, live loads, and environmental loads, need to be carefully analyzed and considered. This analysis helps determine the appropriate size and spacing of the rebars. Secondly, the design must take into account the desired strength and durability of the structure. The type and grade of concrete, as well as the quality and corrosion resistance of the steel rebars, must be selected to ensure the desired lifespan and performance of the structure. Thirdly, the construction constraints and limitations, including the availability of materials and construction techniques, should be considered during the design stage. This helps ensure that the design is practical and feasible to implement. Lastly, it is crucial to adhere to the relevant building codes, regulations, and industry standards. These guidelines provide specific requirements and safety factors that must be followed to ensure the structural integrity and safety of the reinforced concrete structure with steel rebars.
- Q: What is the lifespan of steel rebars in a concrete structure?
- The lifespan of steel rebars in a concrete structure can vary depending on several factors such as the quality of the steel, the environment it is exposed to, and the level of maintenance. However, under normal conditions, steel rebars in a well-designed and properly constructed concrete structure can last for several decades, typically ranging from 50 to 100 years or more. Regular inspections, repairs, and proper protective measures can help extend their lifespan even further.
- Q: How do steel rebars resist shear forces in concrete structures?
- Steel rebars resist shear forces in concrete structures by providing reinforcement and strengthening to the concrete. When concrete is subjected to shear forces, such as those caused by lateral loads or earthquakes, it tends to crack and fail along a diagonal plane. However, by including steel rebars within the concrete, these forces are resisted and distributed more effectively. The steel rebars act as a structural element that enhances the overall strength and stability of the concrete structure. They are typically placed in areas where shear forces are expected to be high, such as in beams, columns, and slabs. The rebars are placed in a crisscross pattern, forming a grid-like structure within the concrete. When shear forces act on the concrete, the rebars resist the tendency of the concrete to crack and separate by transferring the load across the cracks. The rebars act as a tension reinforcement, providing additional strength and preventing the concrete from failing. They distribute the shear forces more evenly, reducing the concentration of stress in specific areas and increasing the overall structural integrity. The bond between the steel rebars and the surrounding concrete is crucial for their effective resistance to shear forces. The rebars are designed with ridges or deformations along their surface to improve the bond strength with the concrete. This bond ensures that the rebars and the concrete act together as a single unit, allowing the transfer of shear forces from the concrete to the steel rebars. In summary, steel rebars resist shear forces in concrete structures by reinforcing and strengthening the concrete, distributing the shear forces more effectively, and preventing the concrete from cracking and failing. They provide additional strength, enhance the structural integrity, and ensure the overall stability of the concrete structure.
- Q: What is the effect of corrosion on the strength of steel rebars?
- Corrosion has a detrimental effect on the strength of steel rebars. As corrosion occurs, it causes the steel rebar to rust and deteriorate, leading to a loss of structural integrity. This can significantly weaken the rebars, compromising their ability to support loads and increasing the risk of structural failure. Regular inspection and maintenance are crucial to prevent corrosion and maintain the strength of steel rebars.
- Q: What does "4EDT6" mean on thread steel?
- Steel wire is another cold processing product of wire rod. According to the different shape of round steel wire, flat wire and triangle wire etc.. In addition to direct use, steel wire is also used for the production of steel wire ropes, steel ridges and other products.
- Q: Can steel rebars be used in structures with limited construction expertise?
- No, steel rebars should not be used in structures with limited construction expertise. The correct installation and placement of rebars require specialized knowledge and skills to ensure the structural integrity and safety of the building. Using rebars incorrectly could result in a compromised structure and potential hazards. It is essential to consult professionals with expertise in construction to handle the installation of rebars properly.
- Q: Can steel rebars be used in structures with high levels of carbonation or acid attack?
- Structures with high levels of carbonation or acid attack should avoid using steel rebars. Carbonation occurs when alkaline compounds in concrete react with carbon dioxide from the atmosphere, resulting in a decrease in the concrete's pH level. This can cause the corrosion of steel rebars, as the lower pH levels create an acidic environment that promotes rusting. Similarly, acid attack happens when structures come into contact with acidic substances like industrial chemicals or acid rain. Acidic environments accelerate the corrosion process by further lowering the pH levels of the concrete, increasing the risk of steel rebar deterioration. To prevent these problems, structures exposed to high levels of carbonation or acid attack can use alternative materials such as stainless steel, epoxy-coated rebars, or fiber-reinforced polymer rebars. These materials possess improved corrosion resistance properties, ensuring better durability in challenging environments. It is essential to consider the specific conditions in which the structure will be exposed and seek advice from structural engineers to select the most suitable materials for long-term performance and safety.
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Hot Rolled Deformed Steel Rebars ASTM, GB HRB400, HRB500
- Ref Price:
-
- Loading Port:
- Lianyungang
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 200000 m.t./month
OKorder Service Pledge
OKorder Financial Service
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