Deformed Bar

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Loading Port:: China Main Port

Payment Terms:: TT OR LC

Min Order Qty:: -

Supply Capability:: -

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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: How do steel rebars affect the overall fire safety of concrete structures?: The overall fire safety of concrete structures can be affected by steel rebars, both positively and negatively. On the positive side, steel rebars can strengthen the fire resistance of concrete structures. Concrete has low thermal conductivity, which means it doesn't easily conduct heat. However, exposure to fire can cause concrete to crack and lose its integrity. Steel rebars help address this issue by providing additional tensile strength, acting as reinforcement to prevent cracking and collapse under intense heat. On the flip side, steel rebars can pose challenges to fire safety. Steel is a good heat conductor, transferring heat from the fire to other parts of the structure. This can weaken the concrete and compromise overall fire safety. Furthermore, steel rebars can expand under high temperatures, potentially causing more cracking and damage to the concrete. To improve fire safety in concrete structures with steel rebars, several measures can be taken. Applying fire-resistant coatings or fireproofing materials on the rebars can minimize heat transfer to the surrounding concrete. Installing fire-resistant insulation or fire barriers around the rebars can also offer additional protection. Proper design and construction practices, including appropriate spacing and size of rebars, are crucial to maintaining the fire resistance of the concrete structure. In conclusion, steel rebars have a significant impact on the fire safety of concrete structures. While they enhance fire resistance, challenges such as heat transfer and expansion must be addressed. By implementing appropriate measures and construction practices, the negative effects of steel rebars on fire safety can be minimized, resulting in improved fire resistance for concrete structures.

Q: Can steel rebars be used in decorative concrete applications?: Yes, steel rebars can be used in decorative concrete applications. They are often used as reinforcement in decorative concrete structures to provide strength and stability. Additionally, steel rebars can be incorporated into the design to create unique and aesthetically pleasing patterns or features, enhancing the overall decorative appeal of the concrete.

Q: How do steel rebars provide flexibility to concrete structures?: Steel rebars provide flexibility to concrete structures in several ways. Firstly, steel rebars are used to reinforce concrete, which helps to increase the tensile strength of the structure. Concrete is strong in compression but weak in tension. By adding steel rebars, the concrete becomes more resistant to bending and cracking, as the rebars can absorb the tensile forces that would otherwise cause the concrete to fail. This reinforcement allows concrete structures to withstand greater loads and provides flexibility by preventing excessive deformation or collapse. Secondly, steel rebars can be used to create a reinforced concrete frame, which enhances the overall flexibility of the structure. The rebars, when embedded in the concrete, form a network of interconnected elements that distribute the applied loads more evenly. This network acts as a flexible skeleton that can adapt to different stresses, such as changes in temperature, ground movements, or dynamic forces. Consequently, the structure can accommodate slight movements or vibrations without suffering significant damage. Moreover, steel rebars can be strategically placed in areas where additional flexibility is required. For example, in seismic-prone regions, rebars can be concentrated in critical areas such as the joints or corners of a building. This placement helps to dissipate the energy generated during an earthquake, allowing the structure to deform and absorb the seismic forces without collapsing. This flexibility provided by the steel rebars helps to enhance the seismic resistance of the concrete structure. In summary, steel rebars provide flexibility to concrete structures by increasing their tensile strength, creating a reinforced concrete frame, and allowing for strategic placement to enhance specific areas of flexibility. This flexibility helps concrete structures withstand various loads, adapt to different stresses, and improve their overall strength and durability.

Q: What specifications should be used for the three - step steel electroslag pressure welding electrode?: Three - step steel electroslag pressure welding electrode with 3mm diameter wire can be.

Q: How do steel rebars contribute to the strength of concrete?: Steel rebars contribute to the strength of concrete by providing reinforcement and increasing its tensile strength. The rebars are embedded in the concrete, forming a strong bond between the two materials. This helps to distribute the load evenly and prevent cracks or fractures from forming, making the concrete structure more resistant to bending, shearing, and other external forces.

Q: Are there any health and safety concerns associated with steel rebars?: Yes, there are some health and safety concerns associated with steel rebars. Handling and working with steel rebars can pose risks such as cuts, punctures, and abrasions. Additionally, prolonged exposure to steel dust and fumes generated during cutting or welding processes can have respiratory effects. Therefore, it is important to take proper precautions like wearing appropriate personal protective equipment and ensuring proper ventilation when working with steel rebars to minimize these health and safety risks.

Q: How are steel rebars coated with epoxy?: Steel rebars are coated with epoxy through a process called epoxy coating or epoxy rebar coating. This process involves applying a layer of epoxy onto the surface of the steel rebar to provide protection against corrosion and other environmental factors. The first step in coating steel rebars with epoxy is to prepare the surface. This includes cleaning the rebars to remove any dirt, oil, or rust that may be present. Surface preparation is crucial as it ensures proper adhesion of the epoxy to the steel surface. Once the surface is prepared, the epoxy coating is applied. There are various methods for applying epoxy, including spraying, brushing, or dipping the rebars into an epoxy solution. The chosen method depends on factors such as the size and shape of the rebars, as well as the desired thickness of the epoxy coating. After the epoxy is applied, the rebars are left to cure. Curing is a process that involves allowing the epoxy to harden and reach its maximum strength. The curing time can vary depending on the specific epoxy product used, but it usually takes several hours or even days for the epoxy to fully cure. Once the epoxy coating is fully cured, the coated rebars are ready for use. The epoxy coating provides a protective barrier that helps prevent the steel rebars from rusting and deteriorating over time. It also improves the rebars' resistance to chemicals, moisture, and other corrosive substances. Overall, epoxy coating is an effective method for protecting steel rebars from corrosion and extending their lifespan. It is widely used in construction projects where rebars are exposed to harsh environmental conditions, such as bridges, buildings, and infrastructure projects.

Q: What is the minimum lap length required for steel rebars in concrete?: The minimum lap length required for steel rebars in concrete varies depending on the specific design and requirements of the structure, but it is generally recommended to follow the guidelines provided by relevant building codes and standards. These guidelines consider factors such as the diameter of the rebar, the concrete strength, and the structural loadings to determine the minimum lap length necessary for ensuring proper bonding and structural integrity. It is essential to consult the appropriate building codes or a structural engineer to accurately determine the minimum lap length for steel rebars in a concrete structure.

Q: Can steel rebars be used in heritage bridge restoration?: Yes, steel rebars can be used in heritage bridge restoration. Steel rebars provide strength and durability to reinforce the existing structure and ensure its stability and longevity. However, it is important to maintain the historical integrity of the bridge during restoration and use rebars that are compatible with the original materials and design.

Q: What is the typical lead time for ordering steel rebars?: The lead time for ordering steel rebars can vary depending on various factors, such as the quantity required, the specific grade and size needed, and the availability and location of the supplier. Typically, if the rebars are readily available and in stock, the lead time can range from a few days to a couple of weeks, assuming the supplier has the necessary inventory and transportation logistics are straightforward. However, if the rebars require special manufacturing or are in high demand, the lead time can be longer. In such cases, it may take several weeks or even months to receive the rebars, especially for large or custom orders that involve special fabrication processes or if the supplier is facing production constraints. To obtain a more accurate estimate of the lead time, it is important to communicate with the supplier and provide them with all the necessary project requirements. It is also advisable to plan ahead and place the order well in advance, particularly for projects with strict deadlines, to ensure the timely arrival of the rebars.

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