STEEL REBAR HIGH QUALITY DEFORMED BAR HRB400 HRB500

STEEL REBAR HIGH QUALITY DEFORMED BAR HRB400 HRB500 System 1

STEEL REBAR HIGH QUALITY DEFORMED BAR HRB400 HRB500

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 200 m.t.

Supply Capability:: 50000 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

Q:What are the common types of coatings applied to steel rebars for corrosion protection?: The common types of coatings applied to steel rebars for corrosion protection include epoxy, zinc, and polyethylene.

Q:How do steel rebars affect the overall durability of a structure?: Steel rebars play a crucial role in enhancing the overall durability of a structure. By providing reinforcement to concrete, they contribute to the structural integrity and longevity of the building. The presence of rebars helps to distribute and withstand tensile forces, increasing the load-bearing capacity of the structure. One of the primary benefits of steel rebars is their ability to resist cracking and prevent the propagation of cracks in concrete. As concrete is weak in tension, the introduction of rebars helps to absorb and distribute tensile stresses, reducing the likelihood of cracks forming. This is particularly important in areas prone to seismic activity or other dynamic forces. Moreover, rebars also offer excellent resistance to corrosion, which is a common threat to the durability of structures, especially those in coastal or humid environments. The steel used in rebars is typically treated with corrosion-resistant coatings or made from stainless steel, ensuring long-term protection against rust and deterioration. The inclusion of steel rebars in concrete structures also enhances their resistance to fire. Steel has a high melting point, and when embedded in concrete, it acts as a heat sink, slowing down the spread of fire and providing additional time for evacuation and firefighting efforts. In summary, steel rebars significantly contribute to the overall durability of a structure by improving its resistance to cracking, corrosion, and fire. Their ability to reinforce concrete and withstand tensile forces ensures the structural stability and longevity of the building, making it more resilient to various environmental and man-made hazards.

Q:What is the role of steel rebars in preventing concrete spalling?: The role of steel rebars in preventing concrete spalling is crucial. Concrete spalling occurs when the outer layer of concrete chips, cracks, or breaks off due to various factors such as moisture, temperature changes, and corrosion. Steel rebars, also known as reinforcement bars, are embedded within the concrete to provide additional strength and support to the structure. When concrete is subjected to external forces or stress, such as heavy loads or seismic activity, the rebars help distribute the forces throughout the structure, preventing localized areas of weakness and reducing the likelihood of spalling. The rebars act as a reinforcement, increasing the tensile strength of the concrete and enhancing its ability to withstand tension and bending forces. Moreover, steel rebars also play a crucial role in preventing spalling caused by corrosion. Concrete is naturally porous, allowing moisture and harmful substances to penetrate its surface and reach the embedded rebars. Over time, these substances can cause the steel to corrode, expanding in size and exerting pressure on the surrounding concrete, leading to spalling. To combat this, rebars are usually coated with epoxy, galvanized, or made from stainless steel, to provide a protective barrier against moisture and corrosive agents. This protective coating significantly reduces the risk of corrosion and subsequent spalling, prolonging the lifespan of the concrete structure. In summary, steel rebars play a vital role in preventing concrete spalling by providing reinforcement, enhancing the tensile strength of the concrete, and distributing forces evenly throughout the structure. Additionally, the corrosion-resistant properties of properly coated rebars help mitigate the risk of spalling caused by moisture and corrosive agents.

Q:How do steel rebars provide flexibility to concrete structures?: Steel rebars provide flexibility to concrete structures by acting as reinforcement. When concrete is poured around the rebars, they provide tensile strength to the structure, allowing it to withstand external forces and prevent cracking or collapsing. The rebars help distribute the load evenly throughout the concrete, making the structure more flexible and resistant to bending or breaking under pressure.

Q:Can steel rebars be used in reinforced concrete structures?: Yes, steel rebars can be used in reinforced concrete structures.

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:Are steel rebars suitable for use in industrial structures?: Yes, steel rebars are commonly used in industrial structures due to their high strength and durability. They provide reinforcement and structural support, making them suitable for withstanding heavy loads and maintaining the integrity of the structure.

Q:What is the role of steel rebars in minimizing cracking due to shrinkage?: The role of steel rebars in minimizing cracking due to shrinkage is to provide reinforcement and strength to concrete structures. By placing steel rebars within the concrete, they act as a framework that helps distribute the tensile forces caused by shrinkage. This prevents the concrete from cracking and ensures the overall stability and durability of the structure.

Q:How are steel rebars affected by chemical exposure?: Steel rebars are generally resistant to chemical exposure due to their high corrosion resistance properties. However, certain aggressive chemicals like acids or salts can cause corrosion and degradation of steel rebars over time, potentially compromising their structural integrity. Therefore, it is crucial to consider the specific chemical environment and implement appropriate protective measures such as coatings or inhibitors to prevent or minimize any potential damage.

Q:How are steel rebars affected by extreme weather conditions?: Steel rebars are highly durable and resistant to extreme weather conditions. They can withstand high temperatures, excessive moisture, and even freezing temperatures without significant damage or corrosion. However, prolonged exposure to extreme weather conditions, such as constant moisture or salty environments, can cause rust and corrosion on the surface of the rebars, which can weaken their structural integrity over time. Therefore, proper maintenance and protective coatings are necessary to ensure the long-term effectiveness of steel rebars in extreme weather conditions.

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