Hot rolled high quality deformed bar 10-50mm

Hot rolled high quality deformed bar 10-50mm System 1

Hot rolled high quality deformed bar 10-50mm

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 25 m.t.

Supply Capability:: 25000 m.t./month

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Deformed Bar Details:

Minimum Order Quantity:		Unit:	m.t.	Loading Port:
Supply Ability:		Payment Terms:		Package:	wire rod packing

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:Grade 1, grade three, grade two, steel, wire rod, round bar: Wire is a wire, usually refers to the use of "high speed non-twist wire rod rolling mill, ordinary common low carbon steel, hot-rolled wire torsion free cooling (ZBH4403-88) and the high quality carbon steel, hot-rolled wire rod without torsion cold control (ZBH44002-88).

Q:Can steel rebars be used in bridge construction?: Yes, steel rebars are commonly used in bridge construction. They provide strength and reinforcement to the concrete used in bridge components such as beams, columns, and foundations. Steel rebars enhance the structural integrity and load-bearing capacity of the bridge, making it a durable and long-lasting infrastructure.

Q:Can steel rebars be used in pre-stressed or post-tensioned concrete structures?: Yes, steel rebars can be used in pre-stressed or post-tensioned concrete structures. In pre-stressed concrete, the rebars are tensioned before the concrete is poured, creating compression within the concrete to counteract external loads. In post-tensioned concrete, the rebars are tensioned after the concrete has set, providing additional strength and reducing cracking. Steel rebars are commonly used in both types of structures due to their high tensile strength and ability to withstand the stress induced by the pre-stressing or post-tensioning process.

Q:Can steel rebars be used in bridges and highways?: Steel rebars are indeed suitable for utilization in bridges and highways. They are commonly employed as reinforcement in concrete structures, such as bridges and highways, to augment their strength and durability. The rebars are inserted into the concrete to provide supplementary tensile strength, which is indispensable for enduring the diverse loads and stresses that bridges and highways encounter. Steel rebars are favored due to their exceptional strength-to-weight ratio, resistance to corrosion, and ability to bond effectively with concrete. Furthermore, they can be readily fabricated and molded to meet the design specifications of the bridge or highway. All in all, steel rebars play a crucial role in the construction of bridges and highways, guaranteeing their structural soundness and long lifespan.

Q:What are the different grades of steel rebars available?: There are several different grades of steel rebars available in the market, each with specific characteristics and applications. The most commonly used grades include: 1. Grade 40: This is a low-strength rebar, suitable for general construction purposes where high tensile strength is not required. It is commonly used in residential buildings, sidewalks, and driveways. 2. Grade 60: This is a medium-strength rebar, offering higher tensile strength than Grade 40. It is widely used in commercial buildings, bridges, and infrastructure projects. Grade 60 rebar provides excellent reinforcement for heavy loads and structural stability. 3. Grade 75: This is a high-strength rebar, often used in challenging construction projects that require exceptional tensile strength. It is commonly utilized in high-rise buildings, parking garages, and industrial structures to ensure superior reinforcement and structural integrity. 4. Grade 80 and above: These are ultra-high-strength rebars designed for specialized applications where extreme load-bearing capacity is necessary. They are commonly used in heavy-duty infrastructure projects, such as dams, tunnels, and nuclear power plants, where the demand for strength is significantly higher. The choice of steel rebar grade depends on factors such as the specific construction project, load-bearing requirements, and environmental conditions. Engineers and architects evaluate these factors to determine the most suitable grade of steel rebar for a particular application, ensuring optimal performance and structural durability.

Q:What is the effect of exposure to extreme temperatures on steel rebars?: Exposure to extreme temperatures can have a significant effect on steel rebars. When exposed to high temperatures, steel rebars can undergo thermal expansion and lose their strength, leading to potential structural failures. On the other hand, exposure to extremely low temperatures can cause steel rebars to contract, potentially leading to cracking and brittle behavior. Therefore, it is crucial to consider temperature effects when designing structures that incorporate steel rebars and implement appropriate measures to mitigate these effects.

Q:How do steel rebars affect the structural integrity of a building?: Steel rebars play a crucial role in enhancing the structural integrity of a building. These reinforced steel bars are primarily used in concrete structures to provide strength and stability. By reinforcing the concrete, rebars help to resist tensile forces and prevent the formation of cracks in the building. One of the main ways rebars affect structural integrity is by increasing the overall load-bearing capacity of the structure. When concrete is combined with steel rebars, it creates a composite material that can withstand greater amounts of weight and stress. This is particularly important in high-rise buildings or structures that need to support heavy loads, such as bridges or parking garages. Moreover, rebars help mitigate the effects of shrinkage and temperature changes on the concrete. Concrete has a tendency to shrink and expand due to changes in temperature and humidity. This can cause cracks to form and compromise the structural integrity of the building. However, by embedding rebars within the concrete, these forces are counteracted, preventing significant damage. Another critical aspect of rebars is their ability to resist bending and deformation. In the event of an earthquake or other dynamic forces, the rebars help distribute the energy throughout the structure, reducing the risk of collapse. This resilience is vital in regions prone to seismic activity. Furthermore, steel rebars offer exceptional durability and longevity. Unlike other materials, such as wood or plastic, steel does not rot, decay, or get affected by termites or other pests. This ensures that the structural integrity of the building remains intact over time, reducing the need for frequent repairs or replacements. In conclusion, steel rebars significantly enhance the structural integrity of a building. By reinforcing concrete, rebars provide strength, increase load-bearing capacity, resist shrinkage and temperature changes, mitigate the effects of dynamic forces, and provide long-lasting durability. Without the inclusion of rebars, buildings would be more susceptible to cracking, structural failure, and compromised safety.

Q:What is the impact of steel rebars on the overall sustainability of a project?: Steel rebars have a significant impact on the overall sustainability of a project. Firstly, they contribute to the durability and structural integrity of buildings and infrastructure, enhancing their lifespan and reducing the need for frequent repairs or replacements. Secondly, steel rebars are recyclable, reducing the demand for virgin materials and minimizing the environmental impact associated with mining and production. Additionally, their use in reinforced concrete can increase energy efficiency by enabling the construction of thinner and lighter structures, resulting in reduced carbon emissions during transportation and construction. Overall, steel rebars positively contribute to the sustainability of a project through improved longevity, recyclability, and energy efficiency.

Q:What is the process of galvanizing steel rebars?: Galvanizing steel rebars is a process that involves applying a protective layer of zinc to the surface of the steel rebar to prevent corrosion and extend its lifespan. The process typically involves the following steps: 1. Surface Preparation: The steel rebars are thoroughly cleaned to remove any dirt, oil, or scale on the surface. This is typically done by using a combination of chemical cleaning agents and mechanical methods such as sandblasting or shot blasting. 2. Pickling: After cleaning, the rebars are immersed in a pickling solution, usually a mixture of hydrochloric acid and water. This solution removes any remaining impurities or oxides from the surface of the rebars. 3. Fluxing: The pickled rebars are then rinsed to remove any residual acid and are immersed in a flux solution. The flux solution helps to remove any remaining oxides and ensures proper adhesion of the zinc coating. 4. Galvanizing: The fluxed rebars are then dipped into a bath of molten zinc. The temperature of the zinc bath is typically maintained between 815 to 850 degrees Fahrenheit (435 to 455 degrees Celsius). The rebars are carefully immersed and then slowly withdrawn to allow excess zinc to drain off. 5. Quenching: After galvanizing, the rebars may be quenched in a specialized solution to cool them rapidly and stabilize the zinc coating. This step helps to prevent the formation of excessive zinc oxide on the surface. 6. Inspection: Once the galvanized rebars have cooled, they undergo a thorough inspection to ensure the quality of the coating. Visual inspection, thickness measurement, and adhesion tests are commonly conducted to assess the zinc coating's integrity. Overall, the galvanizing process provides a durable and effective protective coating for steel rebars, making them resistant to corrosion and extending their lifespan in various applications such as construction, reinforcement, and infrastructure projects.

Q:Can steel rebars be used in the construction of nuclear power plants?: Yes, steel rebars can be used in the construction of nuclear power plants. Steel rebars are commonly used as reinforcement in concrete structures, and they provide strength and durability to the overall construction. However, specific regulations and standards must be followed to ensure the quality and safety of the rebars used in nuclear power plant construction, considering the critical nature of these facilities.

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