BST500S deformed steel bar for construction

BST500S deformed steel bar for construction System 1

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:: 10000 m.t./month

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Product Description:

Specifications of HRB400 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
Brand name	DRAGON

Chemical Composition: (Please kindly find our chemistry of our material based on HRB500 as below for your information)

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

Theoretical weight and section area of each diameter as below for your information:

Diameter(mm)	Section area (mm²)	Mass(kg/m)	Weight of 12m bar(kg)
6	28.27	0.222	2.664
8	50.27	0.395	4.74
10	78.54	0.617	7.404
12	113.1	0.888	10.656
14	153.9	1.21	14.52
16	201.1	1.58	18.96
18	254.5	2.00	24
20	314.2	2.47	29.64
22	380.1	2.98	35.76
25	490.9	3.85	46.2
28	615.8	4.83	57.96
32	804.2	6.31	75.72
36	1018	7.99	98.88
40	1257	9.87	118.44
50	1964	15.42	185.04

Usage and Applications of HRB400 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 HRB400 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

BST500S deformed steel bar for construction

Q: What are the guidelines for splicing steel rebars in concrete?: The guidelines for splicing steel rebars in concrete typically include ensuring proper alignment and overlap of rebar ends, using appropriate splice connectors, and following specific splice length requirements as specified by engineering codes and standards. It is important to follow manufacturer instructions and consult with a structural engineer to ensure the correct splicing technique is used for each specific project.

Q: Can steel rebars be used in dams and reservoirs construction?: Yes, steel rebars can be used in dams and reservoirs construction. Steel rebars are commonly used in concrete construction projects, including dams and reservoirs, due to their high tensile strength and durability. Dams and reservoirs require materials that can withstand the immense pressure exerted by the water, and steel rebars provide the necessary reinforcement to ensure the structural integrity of the concrete. These rebars are typically embedded within the concrete to provide additional strength and prevent cracking or collapse. Additionally, steel rebars are resistant to corrosion, which is crucial in dam and reservoir construction as they are often exposed to water for extended periods. Overall, steel rebars are an essential component in the construction of dams and reservoirs, as they enhance the strength and longevity of the structures.

Q: What are the different types of steel rebars used in column reinforcement?: There are several different types of steel rebars commonly used in column reinforcement. These include: 1. Mild Steel Rebars: Also known as carbon steel rebars, these are the most commonly used type of rebars in construction. They have a low carbon content and are readily available and cost-effective. Mild steel rebars are suitable for most general construction projects. 2. High-Strength Deformed (HSD) Steel Rebars: HSD rebars have a higher carbon content and are heat-treated to increase their strength. They have a greater yield strength and tensile strength compared to mild steel rebars. HSD rebars are commonly used in high-rise buildings and structures where greater strength is required. 3. Epoxy-Coated Rebars: These rebars are coated with an epoxy layer to protect them from corrosion. Epoxy coating acts as a barrier between the steel and the surrounding environment, preventing the steel from coming into contact with moisture and other corrosive elements. Epoxy-coated rebars are commonly used in coastal areas or environments with high humidity levels. 4. Stainless Steel Rebars: These rebars are made from stainless steel, which contains chromium and other alloying elements that provide excellent resistance to corrosion. Stainless steel rebars are suitable for structures exposed to aggressive environments such as chemical plants, wastewater treatment facilities, and marine structures. 5. Galvanized Rebars: Galvanized rebars are coated with a layer of zinc to protect them from rust and corrosion. The zinc coating acts as a sacrificial layer, protecting the underlying steel from coming into contact with corrosive elements. Galvanized rebars are commonly used in corrosive environments where moisture and chemicals are present. It is important to consider the specific requirements of the project, including the level of corrosion resistance needed, the structural strength required, and the environmental conditions, in order to choose the appropriate type of steel rebar for column reinforcement.

Q: What are the different types of steel coatings used on rebars?: There are several types of steel coatings used on rebars, including epoxy coatings, zinc coatings, and galvanized coatings. Epoxy coatings provide corrosion resistance and can be used in both indoor and outdoor applications. Zinc coatings, such as zinc-rich paint or zinc thermal spray, provide sacrificial protection against corrosion. Galvanized coatings involve immersing the rebar in molten zinc, providing long-lasting corrosion resistance.

Q: How do steel rebars contribute to the ductility of reinforced concrete structures?: Steel rebars contribute to the ductility of reinforced concrete structures in several ways. Ductility refers to a material's ability to deform under stress without fracturing. In the case of reinforced concrete structures, steel rebars provide the necessary tensile strength that concrete lacks, enabling the structure to withstand the forces of tension and compression. Firstly, steel rebars effectively resist tensile forces. Concrete is strong in compression but weak in tension. By adding steel rebars within the concrete, the structure gains the ability to withstand tensile stresses. When the concrete is subjected to tension, the rebars carry the load and prevent the concrete from cracking or failing. This enhances the overall ductility of the structure by allowing it to deform and absorb energy without catastrophic failure. Secondly, steel rebars act as reinforcement by distributing applied loads across a wider area. When a reinforced concrete structure is subjected to a load, the stress is transferred from the concrete to the rebars. The rebars distribute this stress throughout the structure, reducing localized concentrations and preventing sudden failure. This redistribution of stress promotes the ductility of the structure by enabling it to flex and absorb energy, rather than experiencing brittle failure. Moreover, steel rebars also provide anchorage and confinement to the concrete. The rebars are typically embedded in the concrete, creating a bond between the two materials. This bond enhances the overall strength and ductility of the structure by preventing the rebars from slipping or pulling out under tension. Additionally, the confinement effect of the rebars prevents the concrete from expanding or spalling under stress, increasing the overall ductility of the reinforced concrete structure. In summary, steel rebars contribute to the ductility of reinforced concrete structures by providing tensile strength, redistributing stress, and offering anchorage and confinement to the concrete. By reinforcing the weak areas of the concrete and allowing for controlled deformation, steel rebars enable the structure to absorb energy and withstand external forces without catastrophic failure.

Q: Are steel rebars suitable for use in historical restoration projects?: Depending on the specific requirements and circumstances, steel rebars may be appropriate for use in historical restoration projects. They possess high strength, durability, and the ability to effectively reinforce structures, making them a popular choice in modern construction and renovation endeavors. Nevertheless, it is crucial to consider the preservation and authenticity of the original structure when contemplating the utilization of steel rebars in historical restoration projects. Historical buildings often possess unique architectural features and materials that must be treated respectfully and preserved. In certain situations, the use of steel rebars may not be suitable, particularly if it compromises the historical integrity or visual appearance of the structure. This is particularly relevant for buildings with significant historical value or those protected by heritage regulations. If it is determined that steel rebars are necessary for structural reinforcement in a historical restoration project, it is vital to integrate them discreetly, minimizing their visual impact. This can be achieved by concealing them within the original materials or utilizing techniques that replicate the appearance of the original construction. In conclusion, while steel rebars offer structural advantages and durability, their use in historical restoration projects should be carefully evaluated to ensure they align with the preservation goals and requirements of the specific project. The preservation of historical authenticity should always be a priority in such endeavors.

Q: What are the factors that affect the strength of steel rebars?: Several factors can affect the strength of steel rebars: 1. Composition: The composition of the steel bar plays a crucial role in determining its strength. Steel rebars typically have a carbon content ranging from 0.15% to 0.6%, which affects their hardness and strength. Other elements such as manganese, silicon, and sulfur can also impact the strength of the rebar. 2. Manufacturing process: The process used to manufacture steel rebars can influence their strength. The bars are generally made through hot rolling, which involves heating the steel billets to high temperatures and then passing them through rollers to shape them. The cooling rate during the manufacturing process can affect the internal microstructure of the bar, leading to variations in strength. 3. Size and shape: The size and shape of the rebar can affect its strength. Thicker and larger diameter rebars generally have higher strength capacities compared to thinner ones. Similarly, the shape of the rebar, whether it is a plain round bar or has deformations like ribs, can also impact its strength. 4. Heat treatment: Certain heat treatment processes can be applied to steel rebars to enhance their strength. For example, quenching and tempering involve heating the rebar to a high temperature and then rapidly cooling it to increase its strength and hardness. The specific heat treatment process used will depend on the desired strength requirements. 5. Corrosion: Corrosion can significantly reduce the strength of steel rebars over time. When exposed to moisture and oxygen, steel rebars can rust, leading to structural degradation. Proper corrosion protection measures, such as epoxy coating or galvanization, can help maintain the strength and durability of the rebars. 6. Loading conditions: The strength of steel rebars can be influenced by the type and magnitude of the applied loads. Different applications require rebars with varying strength capacities. The design and engineering of structures should consider the expected loads to determine the appropriate strength of the rebars used. Overall, the strength of steel rebars is influenced by their composition, manufacturing process, size and shape, heat treatment, corrosion protection, and the loading conditions they will be subjected to. It is essential to consider these factors when selecting and using steel rebars in construction projects.

Q: What are the different types of steel rebars available?: Steel rebars are available in various types, each possessing unique properties and applications. Let's take a look at some of the most prevalent categories: 1. Mild Steel Rebars: These rebars are widely utilized owing to their robustness and durability. They excel in general construction projects and can withstand heavy loads. 2. High-Strength Deformed (HSD) Rebars: Constructed from carbon steel, these rebars undergo heat treatment to enhance their strength and elasticity. Their resistance to corrosion is superior, making them ideal for high-rise buildings, bridges, and structures that require added strength. 3. European Rebars: Manufactured in accordance with European standards, these rebars are primarily composed of mild steel. Their ribbed surface ensures better adherence to concrete, making them suitable for a range of construction applications. 4. Carbon Steel Rebars: These rebars boast a high carbon content, granting them exceptional strength. They are extensively employed in structures demanding remarkable durability, such as bridges and highways. 5. Epoxy-Coated Rebars: These rebars are coated with epoxy to enhance longevity and prevent corrosion. They find common use in marine structures and regions exposed to high humidity or salt. 6. Galvanized Rebars: Coated with a layer of zinc, these rebars offer protection against corrosion. They are commonly employed in moisture-rich areas or coastal regions. 7. Stainless Steel Rebars: Manufactured from stainless steel, these rebars exhibit remarkable resistance to corrosion. They are applied in specialized scenarios, including areas with chemical exposure or structures requiring exceptional durability. To ensure project success, it is crucial to select the appropriate type of steel rebar based on specific requirements such as load-bearing capacity, corrosion resistance, and environmental conditions. Seeking guidance from a structural engineer or construction professional can aid in determining the most suitable rebar for a given undertaking.

Q: What are the different types of steel rebars used in marine construction?: There are several different types of steel rebars commonly used in marine construction projects. These types of rebars are specifically designed to withstand the harsh conditions and corrosive environments typically found in marine structures. 1. Stainless Steel Rebars: These rebars are made of high-grade stainless steel, which contains chromium and nickel. Stainless steel rebars offer excellent resistance to corrosion and are commonly used in marine construction where exposure to saltwater and other corrosive elements is expected. They are more expensive than other types of rebars but provide superior durability and longevity. 2. Epoxy-Coated Rebars: Epoxy-coated rebars are carbon steel rebars that have been coated with an epoxy layer. This coating acts as a protective barrier, preventing the steel from coming into contact with corrosive elements and reducing the risk of rust and corrosion. Epoxy-coated rebars are commonly used in marine construction projects where saltwater exposure is high. 3. Galvanized Rebars: Galvanized rebars are carbon steel rebars that have been hot-dip galvanized. This process involves coating the steel with a layer of zinc, which provides excellent corrosion resistance. Galvanized rebars are commonly used in marine construction projects where exposure to seawater or salt spray is expected. 4. Fiberglass Rebars: Fiberglass rebars are made of high-strength glass fibers embedded in a polymer matrix. These rebars offer excellent resistance to corrosion, as they are not affected by saltwater or other corrosive elements. Fiberglass rebars are lightweight, non-magnetic, and have a high tensile strength, making them suitable for marine construction projects. 5. Carbon Steel Rebars: Carbon steel rebars are the most common type of rebars used in construction, including marine projects. While they are not inherently resistant to corrosion, they can be treated with protective coatings, such as epoxy or galvanization, to enhance their durability and resistance to corrosive environments. It is important to consider the specific requirements and conditions of a marine construction project when selecting the appropriate type of steel rebars. Factors such as exposure to saltwater, humidity, and the expected lifespan of the structure should be taken into account to ensure the longevity and safety of the marine structure.

Q: Can steel rebars be used in historical buildings restoration?: Yes, steel rebars can be used in historical buildings restoration. Steel rebars provide strength and structural integrity to the building, ensuring its stability and longevity. However, it is crucial to use rebars that are compatible with the historical building's materials and design to preserve its authenticity. Additionally, proper installation techniques and preservation methods should be employed to minimize any potential damage or alteration to the historical fabric of the building.

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