HR Deformed Steel Rebars of Good Quality

HR Deformed Steel Rebars of Good Quality System 1

HR Deformed Steel Rebars of Good Quality

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 25 m.t.

Supply Capability:: 200000 m.t./month

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Specifications of HR Deformed Steel Rebars of Good Quality:

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
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
Application	Building, construction
Invoicing	Actual or Theoretical Weight Basis as buyer’s request.
Type	Hot rolled steel rebar
Brand name	DRAGON

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

Diameter(mm)	Section area (mm²)	Mass(kg/m)	Weight of 12m (kg)	Pcs/ton
6	28.27	0.222	2.664	375.38
8	50.27	0.395	4.74	210.97
10	78.54	0.617	7.404	135.06
12	113.1	0.888	10.656	93.84
14	153.9	1.21	14.52	68.87
16	201.1	1.58	18.96	52.74
18	254.5	2.00	24	41.67
20	314.2	2.47	29.64	33.74
22	380.1	2.98	35.76	27.96
25	490.9	3.85	46.2	21.65
28	615.8	4.83	57.96	17.25
32	804.2	6.31	75.72	13.21
36	1018	7.99	98.88	10.43
40	1257	9.87	118.44	8.44
50	1964	15.42	185.04	5.40

Steel Rebar in warehouse

Steel Rebar in stock

Steel Rebar

Chemical Composition: (Please kindly find our chemistry of our material based on BS4449 as below for your information)

BS4449 G460B	Chemical Composition
	C	Mn	Si	S	P
	0.18	0.35	0.14	0.025	0.25
	Physical capability
	Yield Strength(N/cm²)		Tensile Strength(N/cm²)		Elongation (%)
	625		≥460		18

Usage and Applications of HR Deformed Steel Rebars of Good Quality:

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 HR Deformed Steel Rebars of Good Quality:

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 terms: TT payment in advance or Irrevocable LC at sight.

Trade terms :FOB, CFR, CIF

Delivery Detail: within 45 days after received advanced payment or LC.

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: Are there any disadvantages to using steel rebars?: Yes, there are some disadvantages to using steel rebars. Firstly, steel rebars can corrode over time, especially in environments with high moisture or exposure to chemicals, which can reduce their strength and durability. Additionally, steel rebars are susceptible to thermal expansion and contraction, leading to cracking in concrete structures. Moreover, steel rebars are heavy and can be challenging to handle and transport, making construction processes more labor-intensive.

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: How is steel rebar made?: Steel rebar, which is short for reinforcing bar, undergoes a process known as steel reinforcement fabrication to be produced. The initial stage of manufacturing steel rebar involves melting down raw materials such as iron ore, coal, and limestone in a blast furnace. This procedure, called smelting, results in the creation of molten iron. Following smelting, the molten iron is refined and purified in a basic oxygen furnace to eliminate impurities such as carbon, sulfur, and phosphorous. By refining the molten iron, the steel that is produced attains the desired strength and properties. Once the refining process is complete, the steel is cast into long, solid bars called billets. These billets are then heated and rolled into elongated strands known as rebars. The rolling process entails passing the billets through a series of rollers that gradually shape and elongate the steel. After the rebars have been formed, they are cooled and cut into various lengths based on their intended use, such as reinforcing concrete in structures like buildings and bridges. To further enhance the strength and durability of the rebar, it can undergo a process called quenching and tempering. This involves subjecting the rebar to high temperatures, followed by rapid cooling and subsequent reheating and slow cooling. This process significantly improves the mechanical properties of the rebar, making it more resistant to wear, corrosion, and other external forces. Finally, the rebar undergoes a surface treatment process, such as hot-dip galvanizing or epoxy coating, to safeguard it against rust and corrosion. This coating ensures that the rebar maintains its structural integrity and longevity when utilized in various construction applications. In summary, the production of steel rebar involves a series of steps, including smelting, refining, casting, rolling, cutting, heat treatment, and surface coating. These processes guarantee that the final product meets the necessary strength and durability requirements for reinforcing concrete structures.

Q: Can steel rebars be used in structures with limited construction materials?: Yes, steel rebars can be used in structures with limited construction materials. Steel rebars are commonly used as reinforcement in concrete structures to provide strength and stability. They can be easily transported and installed, making them suitable for construction projects in areas with limited access to construction materials. Additionally, steel rebars have high tensile strength, which enhances the durability and load-bearing capacity of structures, making them a reliable choice in resource-constrained environments.

Q: What are the advantages of using ribbed steel rebars?: There are several advantages to using ribbed steel rebars. Firstly, the ribs on the surface of the rebar provide enhanced bond strength with the concrete, ensuring better load transfer and reduced slippage between the two materials. This results in improved structural integrity and increased resistance to cracking and deformation. Additionally, the ribbed texture also enhances the rebar's ability to withstand seismic forces, making it an ideal choice for earthquake-prone regions. Moreover, the increased surface area of the ribs allows for better corrosion resistance, extending the lifespan of the rebar and minimizing maintenance costs. Overall, ribbed steel rebars offer superior performance, durability, and safety in reinforcing concrete structures.

Q: What are the different types of couplers used for connecting steel rebars?: There are several types of couplers used for connecting steel rebars, including mechanical couplers, welded couplers, and grouted couplers. Mechanical couplers utilize threaded or tapered designs to connect rebars, providing a strong and reliable joint. Welded couplers involve welding the rebars together, creating a permanent connection. Grouted couplers use a combination of grout and mechanical means to connect rebars, offering both load-bearing capacity and corrosion protection. The choice of coupler type depends on various factors such as project requirements, rebar diameter, and structural design.

Q: What is the lifespan of steel rebars in concrete structures?: The lifespan of steel rebars in concrete structures can vary depending on several factors. Generally, steel rebars are designed to provide durability and strength to concrete structures. With proper design, construction, and maintenance, steel rebars can last for several decades or even up to a century in concrete structures. One crucial factor influencing the lifespan of steel rebars is the quality of materials used. High-quality rebars manufactured with corrosion-resistant coatings or stainless steel tend to have a longer lifespan compared to regular carbon steel rebars. Additionally, the quality of concrete used and its ability to protect the rebars from moisture and corrosive agents is also important. Environmental conditions play a significant role in determining the lifespan of steel rebars. Exposure to harsh climates, such as areas with high humidity, saltwater, or acidic environments, can accelerate corrosion and reduce the lifespan of the rebars. Adequate protective measures, such as proper concrete cover thickness, waterproofing, and the use of corrosion inhibitors, can help extend the lifespan of steel rebars in such conditions. Maintenance and inspection are essential to ensure the longevity of steel rebars in concrete structures. Regular inspections for signs of corrosion, cracking, or damage should be conducted, and any necessary repairs or protective measures should be undertaken promptly. In some cases, periodic coating or rebar replacement may be required to maintain the structural integrity of the concrete elements. In summary, the lifespan of steel rebars in concrete structures can range from several decades to over a century, depending on various factors such as material quality, environmental conditions, and proper maintenance. By employing appropriate design, construction, and maintenance practices, the lifespan of steel rebars can be significantly extended, ensuring the long-term integrity and durability of the concrete structure.

Q: Can steel rebars be used in historical building restoration?: Yes, steel rebars can be used in historical building restoration. Steel rebars provide structural support and reinforcement, making them a suitable choice for strengthening and preserving historical buildings. However, careful consideration should be given to ensure that the use of steel rebars does not compromise the historical integrity and authenticity of the building.

Q: How do steel rebars affect the workability of concrete?: Steel rebars can have a significant impact on the workability of concrete. Firstly, the presence of steel rebars in concrete helps to increase its strength and structural integrity. The rebars act as reinforcement by absorbing and redistributing tensile forces, preventing the concrete from cracking or collapsing under load. However, the addition of steel rebars also affects the workability of concrete in several ways. Firstly, the presence of rebars reduces the workability or slump of the concrete mix. This means that the concrete becomes less fluid and more difficult to handle, especially during pouring and placement. The rebars create obstacles and hinder the flow of concrete, requiring more effort to properly place and compact the mixture. Furthermore, the presence of steel rebars can lead to issues such as segregation and segregation of concrete. Segregation occurs when the heavier rebars cause the aggregate to settle at the bottom, resulting in an uneven distribution of components in the mixture. This can affect the strength and durability of the concrete. Moreover, the presence of rebars may require additional measures to ensure proper bond between the steel and concrete. Adequate cover depth and proper placement of rebars are crucial to ensure that the rebars are fully embedded in the concrete, providing the necessary reinforcement. Failing to achieve proper bond can compromise the strength and structural integrity of the concrete. In conclusion, steel rebars have both positive and negative effects on the workability of concrete. While they enhance the strength and durability of the concrete, they also reduce its workability and require additional considerations during the mixing and placement process. Proper planning and execution are necessary to ensure that the rebars are incorporated effectively and do not hinder the overall workability and performance of the concrete.

Q: How do steel rebars help in reducing construction time?: Steel rebars help in reducing construction time in several ways: 1. Strength and durability: Steel rebars provide additional strength and durability to concrete structures, allowing for faster construction techniques. This means that builders can rely on the strength of rebars to support the weight of the structure, reducing the need for slower and more time-consuming construction methods. 2. Reinforcement: By reinforcing concrete with steel rebars, the overall structural integrity of the building is enhanced. This enables builders to use thinner concrete sections without compromising the strength of the structure. Thinner sections require less material and are quicker and easier to pour and cure, saving construction time. 3. Speed of installation: Steel rebars are easy to handle and install, which speeds up the construction process. They can be easily cut and bent to fit the desired shape and size, allowing for efficient installation. This eliminates the need for complex and time-consuming formwork, reducing construction time. 4. Flexibility: Steel rebars offer flexibility in design and construction, allowing for innovative and efficient building techniques. They can be used in various applications, such as beams, columns, and slabs, giving architects and engineers the freedom to design structures that can be constructed quickly and efficiently. 5. Resistance to natural disasters: Steel rebars provide added resistance to seismic activity and other natural disasters. By reinforcing concrete with rebars, structures become more resilient, reducing the risk of damage and accelerating the construction process. This is particularly important in areas prone to earthquakes or extreme weather conditions. Overall, steel rebars play a crucial role in reducing construction time by providing strength, durability, and flexibility. Their ease of installation, coupled with their ability to reinforce concrete structures, allows for faster construction methods and efficient use of materials.

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