Hot-Rolled HRB400 Reinforced Deformed Steel Bar
- Ref Price:
-
- Loading Port:
- China main port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 30 m.t.
- Supply Capability:
- 100000 m.t./month
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Specification
Standard:
ASTM,JIS,EN,API,DIN,BS,GB,AISI
Technique:
Extruded,Saw,Forged,ERW,Cold Drawn,Cold Rolled,Hot Rolled,Spring,EFW
Shape:
LTZ,Oval,Rectangular,Round,Hexagonal,C Channel,Square,U Channel
Surface Treatment:
Dry,Polished,Bright,Black,PVDF Coated,Oiled,Color Coated,Copper Coated,Coated,Galvanized,Chromed Passivation
Steel Grade:
Q195,Q215,Q235,Q215B,Q235B,RHB335,HRB400,200 Series,300 Series,400 Series,600 Series,SS400-SS490,10#,20#,A53(A,B)
Certification:
ISO,SGS,BV,IBR,RoHS,CE,API,BSI,UL
Thickness:
--
Length:
--
Net Weight:
--
Product Description:
Specifications of Hot-Rolled HRB400 Reinforced Deformed Steel Bar
Standard | GB | HRB400 | |
Diameter | 6mm,8mm,10mm,12mm,14mm,16mm,18mm,20mm, 22mm,25mm,28mm,32mm,36mm,40mm,50mm | ||
Length | 6M, 9M,12M or as required | ||
Place of origin | Hebei, China mainland | ||
Advantages | exact size, regular package, chemical and mechanical properties are stable. | ||
Type | Hot rolled deformed steel bar | ||
Chemical Composition of Hot-Rolled HRB400 Reinforced Deformed Steel Bar
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 | |
Physical capability | |||||||
Yield Strength (N/cm²) | Tensile Strength (N/cm²) | Elongation (%) | |||||
≥400 | ≥570 | ≥14 | |||||
Usage and Applications of Hot-Rolled HRB400 Reinforced 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 Hot-Rolled HRB400 Reinforced 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
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: What is the specific concept of thread steel through water and what is the difference?
- The principle of water cooling technology to produce rebar is that austenite can be strongly deformed in the process of continuous rolling in the recrystallization zone, resulting in very fine, strongly hardened austenite grains with a lot of defects. With the high speed of cooling on the enhanced cooling of austenite, in a very short period of time, generally not more than 0.5s, is rapidly cooled to near the phase transition temperature, inhibit the growth of austenite grain, try to keep the hardening state of austenite. When the temperature is near the phase transition point, the fine hardening austenite grains are transformed into ferrite with proper grain size under proper air cooling conditions.
- Q: What is the impact of steel rebars on the overall carbon footprint of a building?
- The overall carbon footprint of a building is significantly influenced by the presence of steel rebars. This is because the production of steel involves the consumption of high amounts of energy and the release of substantial greenhouse gas emissions, particularly carbon dioxide. The carbon footprint of a building is further affected by activities such as the extraction and processing of iron ore, as well as the manufacturing and transportation of steel rebars. The extent to which steel rebars are used in a building also plays a role in its carbon footprint. The more steel rebars that are utilized, the higher the carbon footprint will be. The quantity of steel rebars required is determined by factors such as the size and complexity of the structure, as well as specific design requirements. However, it is worth noting that steel rebars are an essential component of reinforced concrete, which is widely used in construction due to its strength and durability. Reinforced concrete ensures the structural integrity and longevity of a building, consequently contributing to its safety. While steel rebars contribute to the building's carbon footprint, they also play a critical role in constructing secure and resilient structures. To mitigate the carbon footprint associated with steel rebars, several strategies can be employed. One approach is to utilize recycled steel rebars, which significantly reduces the energy consumption and emissions associated with steel production. Additionally, optimizing the design and construction process can help minimize the overall amount of steel required, thereby reducing the carbon footprint. Furthermore, alternative materials such as fiber-reinforced polymers (FRPs) are being developed as substitutes for steel rebars. FRPs have lower carbon footprints since they are made from materials like fiberglass or carbon fiber, which have lower emissions during production. However, the use of FRPs is still limited, and further research and development are needed to enhance their viability as a mainstream alternative. In conclusion, the presence of steel rebars has a significant impact on the carbon footprint of a building due to the energy-intensive production process and emissions associated with their extraction, manufacturing, and transportation. Nevertheless, their crucial role in providing structural integrity and durability should not be overlooked. Efforts to reduce the carbon footprint of steel rebars include the use of recycled materials, the optimization of designs, and the exploration of alternative materials like FRPs. Ultimately, a comprehensive approach that considers both the environmental impact and the structural requirements of a building is necessary to minimize the carbon footprint associated with steel rebars.
- Q: What is the average lifespan of a reinforced concrete structure with steel rebars?
- The average lifespan of a reinforced concrete structure with steel rebars can vary depending on various factors such as the quality of construction, maintenance, exposure to environmental conditions, and usage patterns. However, with proper design, construction, and maintenance, reinforced concrete structures with steel rebars can have an average lifespan of 50 to 100 years or more. Reinforced concrete structures are known for their durability and strength due to the combination of concrete and steel reinforcement. The concrete provides compressive strength, while the steel rebars provide tensile strength, making the structure resistant to various loads and forces. However, over time, reinforced concrete structures may experience degradation due to factors such as exposure to moisture, chemicals, temperature changes, and loading conditions. These factors can lead to the corrosion of steel rebars, which is a common concern for the longevity of such structures. Corrosion occurs when moisture and oxygen penetrate the concrete, causing the steel rebars to rust. This rusting process can lead to the expansion of the steel rebars, causing cracks in the concrete and further accelerating the deterioration of the structure. To mitigate the effects of corrosion and extend the lifespan of reinforced concrete structures, various measures can be taken. These include using high-quality concrete and steel rebars, applying protective coatings, implementing proper drainage systems, and conducting regular inspections and maintenance. With appropriate maintenance and upkeep, reinforced concrete structures can last well beyond their average lifespan. However, it is crucial to note that the lifespan can vary depending on specific conditions and circumstances. Therefore, it is essential to consult with structural engineers and industry professionals to assess and determine the expected lifespan of a particular reinforced concrete structure.
- Q: Can steel rebars be used in bridge construction projects?
- Yes, steel rebars can be used in bridge construction projects. Steel rebars are commonly used as reinforcement in concrete structures, including bridges. They provide strength and stability to the bridge, enhancing its load-bearing capacity and resistance to various forces such as tension, compression, and bending. Steel rebars are highly durable and can withstand harsh environmental conditions, making them an ideal choice for bridge construction where longevity and structural integrity are crucial. Additionally, steel rebars can be easily shaped and bent to suit the specific design requirements of the bridge, allowing for flexible and efficient construction. Overall, steel rebars are widely accepted and commonly used in bridge construction projects due to their excellent mechanical properties and reliability.
- Q: What are the different methods of fixing steel rebars in formwork?
- There are several methods for fixing steel rebars in formwork, including using wire ties, mechanical splices, couplers, and welding. Wire ties involve twisting a wire around the rebar intersections to hold them together. Mechanical splices are pre-manufactured devices that join rebars together, providing a strong connection. Couplers are similar to mechanical splices but are typically used for larger diameter rebars. Welding involves fusing the rebars together using heat, creating a permanent bond. Each method has its own advantages and considerations depending on the project requirements and rebar sizes.
- Q: What are the guidelines for the proper cover thickness of steel rebars?
- To guarantee the durability and strength of reinforced concrete structures, guidelines have been established to determine the appropriate thickness of steel rebars used in their construction. The term "cover thickness" refers to the distance between the outer surface of the rebar and the concrete edge or surface. The specific guidelines for cover thickness may differ depending on factors such as design requirements, environmental conditions, and the intended purpose of the structure. Nevertheless, there are generally accepted minimum values for cover thickness as outlined in various international building codes and standards. The primary objective of maintaining sufficient cover thickness is to shield the steel rebars from corrosion caused by environmental elements like moisture, carbonation, and chloride ingress. Corrosion can significantly weaken the rebars, compromising the structural integrity of the reinforced concrete. The recommended minimum cover thickness for steel rebars is determined based on the exposure conditions. For instance, in regular environmental conditions, a minimum cover thickness of 25mm to 40mm is usually specified. However, in more aggressive environments, such as coastal areas with high chloride content or structures in contact with soil, a greater cover thickness of 50mm or more may be necessary. Adhering to these guidelines is crucial to ensure the long-term durability and safety of the structure. Insufficient cover thickness can accelerate the corrosion of the rebars, resulting in reduced load-bearing capacity, cracks, and ultimately, structural failure. Therefore, it is essential to consult the relevant building codes, standards, and design professionals to determine the appropriate cover thickness for steel rebars in a specific construction project.
- Q: Can steel rebars be used in hotel construction?
- Yes, steel rebars can be used in hotel construction. Steel rebars are commonly used as reinforcement in concrete structures, including hotel buildings, to enhance their strength and durability. They provide necessary support to the concrete, ensuring the structural integrity of the hotel during its lifespan.
- Q: How are steel rebars cut on-site?
- Steel rebars are typically cut on-site using a variety of tools such as a rebar cutter or a portable hydraulic shear. These tools are specifically designed to provide precise and efficient cutting of steel rebars, ensuring that they are accurately sized for construction purposes.
- Q: Can steel rebars be used in structures with high resistance to fatigue?
- Yes, steel rebars can be used in structures with high resistance to fatigue. Steel rebars are commonly used as reinforcement in concrete structures due to their high tensile strength and durability. They are designed to provide additional strength and support to the concrete, making the structure more resistant to various loads and stresses, including fatigue. Fatigue is the weakening of a material caused by repeated stress cycles, which can lead to structural failure over time. Steel rebars, especially those made from high-strength steel, are specifically manufactured to withstand cyclic loading and provide excellent resistance to fatigue. They have a high fatigue strength, allowing them to endure repeated stress cycles without significant deterioration. In structures with high resistance to fatigue, steel rebars are strategically placed to distribute and dissipate the applied loads, reducing stress concentrations and minimizing the risk of fatigue failure. The reinforcement provided by steel rebars enhances the overall structural integrity and longevity of the construction. Moreover, the use of steel rebars allows for the implementation of various design techniques, such as the inclusion of additional reinforcing elements like stirrups and tie hooks, which further enhance the fatigue resistance of the structure. These design considerations help ensure that the steel rebars effectively mitigate the effects of cyclic loading and maintain the structural stability and performance over time. However, it is essential to note that the fatigue resistance of a structure is not solely dependent on the steel rebars. Other factors, such as the quality of concrete, proper detailing and placement of rebars, and adherence to proper construction practices, also influence the overall fatigue performance of the structure. Therefore, it is crucial to consider a comprehensive approach that incorporates appropriate design, material selection, and construction techniques to achieve structures with high resistance to fatigue.
- Q: How do steel rebars resist fatigue and creep?
- Steel rebars resist fatigue and creep due to their high tensile strength and ductility. The robustness of steel allows rebars to endure repeated loading cycles without experiencing significant fatigue damage. Additionally, the high stiffness and resistance to deformation of steel rebars prevent creep, which is the gradual deformation under sustained loads over time. Overall, the combination of strength, ductility, and stiffness in steel rebars enables them to withstand fatigue and creep effectively.
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Hot-Rolled HRB400 Reinforced Deformed Steel Bar
- Ref Price:
-
- Loading Port:
- China main port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 30 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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