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: Can steel rebars be used in residential swimming pool construction?: Residential swimming pool construction can indeed benefit from the incorporation of steel rebars. These rebars are frequently employed to fortify concrete structures, such as swimming pools. By reinforcing the concrete, the rebars enhance its strength and durability, enabling it to endure the water's pressure and weight. The utilization of steel rebars also serves to avert cracks and structural harm that may occur over time. Additionally, these rebars are readily accessible, cost-effective, and can be conveniently installed by professional pool builders. In conclusion, it is highly advisable to include steel rebars in the construction of residential swimming pools to ensure a dependable and long-lasting pool structure.

Q: What are the guidelines for the proper installation of steel rebars?: The proper installation of steel rebars is crucial for ensuring the structural integrity and durability of reinforced concrete structures. Here are some guidelines to follow for their proper installation: 1. Planning and Design: Before beginning the installation, it is important to have a detailed plan and design in place. This includes determining the required rebar size, spacing, and configuration based on the structural requirements and specifications. Consulting structural engineers and adhering to local building codes and regulations is essential. 2. Cutting and Bending: Rebars should be cut and bent accurately according to the design specifications. Proper tools such as rebar cutters and benders should be used to ensure clean cuts and precise bends. Any damaged or corroded rebars should be discarded and replaced. 3. Cleaning and Preparation: The surface of the rebars must be free from any contaminants like rust, oil, dirt, or loose scales before installation. Cleaning the rebars using wire brushes or air blasting is recommended to ensure proper adhesion between the rebar and concrete. 4. Placement and Positioning: The rebars should be placed and positioned accurately as per the design drawings. They should be securely tied or supported using tie wires or rebar chairs to maintain the desired spacing and alignment. Splices should be made in accordance with the design requirements and properly lapped to ensure continuity and strength. 5. Concrete Cover: The rebars should be adequately covered with concrete to protect them from corrosion and provide fire resistance. The concrete cover thickness should meet the design specifications and local building codes. Proper spacing between rebars and formwork should be maintained to allow proper concrete flow and consolidation. 6. Anchorage and Embedment: Adequate anchorage and embedment of rebars are essential for transferring loads and ensuring structural stability. Special care should be taken to provide proper hooks, bends, or mechanical anchorage at the ends of rebars as per the design requirements. The rebars should be properly embedded into the adjacent concrete elements to achieve the desired bond strength. 7. Inspection and Quality Control: Regular inspection should be carried out during the installation process to ensure compliance with the design specifications and quality standards. Any deviations or defects should be identified and rectified promptly. It is important to document the installation process and maintain proper records for future reference. By following these guidelines, the proper installation of steel rebars can be achieved, ensuring the structural strength, longevity, and safety of reinforced concrete structures.

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: What is the process of reinforcing existing concrete structures with steel rebars?: The process of reinforcing existing concrete structures with steel rebars involves several steps to enhance the strength and durability of the structure. Firstly, a thorough inspection and assessment of the existing concrete structure is conducted to determine its condition and identify areas that require reinforcement. This involves examining the concrete for cracks, signs of degradation, or any other structural issues. Once the areas requiring reinforcement are identified, the next step is to prepare the surface. This involves cleaning the concrete surface to remove any loose debris, dirt, or contaminants that may hinder the bonding of the rebars with the concrete. This can be done using various methods such as pressure washing or sandblasting. After the surface preparation, the rebars are then placed strategically within the concrete structure. The positioning and spacing of the rebars are crucial to ensure optimal reinforcement and structural integrity. This is typically done by drilling holes or creating channels in the concrete where the rebars will be placed. Next, the rebars are inserted into the holes or channels, ensuring that they are properly aligned and secured. The rebars are typically cut to the required length and bent into the desired shape to fit the specific reinforcement needs of the structure. Once the rebars are in place, they are then anchored or secured to the existing concrete using various methods. This can be achieved through the use of epoxy adhesive, mechanical anchors, or by embedding the rebars into fresh concrete poured around them. Finally, the concrete is repaired or restored to its original condition, covering the rebars and ensuring a smooth and even surface. This can involve patching up any holes or channels created during the reinforcement process and finishing the surface to match the surrounding concrete. Overall, the process of reinforcing existing concrete structures with steel rebars requires careful planning, proper surface preparation, precise placement of rebars, secure anchoring, and appropriate finishing to achieve a strengthened and long-lasting structure.

Q: Are steel rebars suitable for reinforcement in tunnels?: Yes, steel rebars are suitable for reinforcement in tunnels. Steel rebars provide excellent strength and durability, making them an ideal choice for reinforcing tunnels and ensuring their structural integrity. They can effectively withstand the loads and pressures that tunnels may experience, including the weight of the surrounding soil or rock, as well as any dynamic forces. Additionally, steel rebars have good resistance to corrosion, further enhancing their suitability for tunnel reinforcement.

Q: The effect of adding alum on thread steel: Vanadium has many excellent physical and chemical properties, so vanadium has a wide range of uses. Most of the initial vanadium was applied to steel. By refining the microstructure and grain of steel, the grain coarsening temperature was increased, thus increasing the strength, toughness and wear resistance of steel. Later, people gradually discovered the outstanding improvement of vanadium in titanium alloys, and applied it to the aerospace field, which made the aerospace industry made a breakthrough progress. With the rapid development of science and technology, the demand for new materials is increasing. Vanadium is used more and more widely in the field of non iron and steel. Its range includes aerospace, chemistry, batteries, pigments, glass, optics, medicine and many other fields.

Q: What is the impact of moisture on steel rebars?: Moisture can have a significant impact on steel rebars. When moisture comes into contact with steel rebars, it can initiate corrosion, leading to weakening and deterioration of the steel. This corrosion process can reduce the strength and structural integrity of the rebars, compromising the overall stability of the reinforced concrete structure. Therefore, it is crucial to prevent or minimize moisture exposure to steel rebars to ensure their long-term durability and performance.

Q: Are there any limitations on the maximum length of steel rebars used in construction?: There are restrictions on the maximum length of steel rebars used in construction, which can vary based on factors like structural design, construction codes, and transportation limitations. Generally, the length of steel rebars is limited due to practical considerations such as handling, transportation, and installation. Very long rebars can be challenging to transport and maneuver on construction sites, and they may also be more susceptible to bending or sagging, thus compromising their structural integrity. Consequently, construction industry standards and codes typically establish guidelines or restrictions on the maximum length of steel rebars to guarantee their safe and efficient utilization in construction projects. Architects, engineers, and contractors must adhere to these limitations to ensure the building's structural stability and safety.

Q: What is the standard size of steel rebars?: The standard size of steel rebars varies depending on the country and industry standards. However, in many countries, the most commonly used standard sizes of steel rebars range from 6mm to 40mm in diameter.

Q: How do steel rebars affect the overall load-bearing capacity of a structure?: Steel rebars greatly enhance the load-bearing capacity of a structure. These reinforcing bars are typically added to concrete structures, such as beams, columns, and slabs, to provide additional strength and durability. The primary function of rebars is to resist tensile forces, which concrete alone is not capable of doing effectively. By embedding steel rebars within the concrete, the overall load-bearing capacity of the structure increases significantly. When a load is applied to the structure, the rebars distribute the forces more evenly, preventing cracks and minimizing the risk of structural failure. This reinforcement increases the structure's ability to withstand heavy loads, including the weight of the building itself, live loads like furniture and occupants, and external forces such as wind and earthquakes. The rebars also help to control and limit the propagation of cracks within the concrete. Concrete is strong in compression but weak in tension, so without the presence of rebars, it would be prone to cracking under tensile stress. The rebars act as a reinforcement by absorbing some of the tensile forces, preventing the cracks from expanding and compromising the structure's overall strength. Moreover, steel rebars improve the ductility of the structure. Ductility refers to the ability of a material to deform without fracturing. When a structure experiences excessive loads or undergoes deformation due to external factors, the rebars help in absorbing and dissipating the energy, allowing the structure to deform in a controlled manner rather than abruptly collapsing. In summary, steel rebars significantly enhance the load-bearing capacity of a structure by providing tensile strength, preventing the propagation of cracks, and improving ductility. By reinforcing the concrete, rebars ensure the structure can withstand heavy loads, increasing its strength, durability, and overall safety.

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