Deformed bars in Grade HRB400 with Best Quality

Deformed bars in Grade HRB400 with Best Quality System 1

Deformed bars in Grade HRB400 with Best Quality

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 25 m.t.

Supply Capability:: 100000 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 earthquake-resistant buildings?: Yes, steel rebars can be used in earthquake-resistant buildings. Steel rebars provide strength and reinforcement to concrete structures, making them more resistant to seismic forces. The use of properly designed and installed steel rebars enhances the structural integrity of buildings, helping them withstand the lateral forces generated during an earthquake.

Q: What are the guidelines for the proper lap splicing of steel rebars?: The guidelines for the proper lap splicing of steel rebars include ensuring that the rebars are clean and free from rust, dirt, or any other contaminants. The spliced rebars should have appropriate overlapping lengths as specified by the design engineer. The lap splice should be made using mechanical splicing methods or approved splice connectors to ensure proper load transfer. The spliced rebars should be securely positioned and aligned to maintain the required concrete cover. It is essential to follow the specific codes and standards set by the construction industry for lap splicing to ensure the structural integrity and safety of the reinforced concrete structure.

Q: What are the different types of steel rebars used in tunnel construction?: There are several types of steel rebars commonly used in tunnel construction, including carbon steel rebars, epoxy-coated rebars, stainless steel rebars, and galvanized rebars. Each type has its own unique properties and advantages, such as enhanced corrosion resistance, increased durability, and improved strength. The choice of rebar type depends on factors such as the specific tunnel design, environmental conditions, and project requirements.

Q: How do steel rebars prevent cracking in concrete?: Steel rebars prevent cracking in concrete by providing reinforcement and increasing the overall strength and durability of the structure. When concrete is subject to tensile forces, such as bending or stretching, it tends to crack. However, steel rebars are added to concrete construction to counteract these tensile forces. The rebars, which are made of high-strength steel, are strategically placed within the concrete to create a reinforcing mesh or framework. This mesh acts as a skeleton that absorbs and distributes the tensile forces throughout the concrete structure, preventing the formation of cracks. When external loads, such as heavy weights or seismic forces, are applied to the concrete, the rebars bear the tensile stress instead of the concrete. The steel rebars have a significantly higher tensile strength compared to concrete, allowing them to resist the forces that would normally cause cracking. By distributing the stress more evenly, the rebars minimize the formation of cracks and help maintain the structural integrity of the concrete. Furthermore, steel rebars also prevent cracks by improving the bond between the concrete and the reinforcement. Concrete has excellent compressive strength, but its tensile strength is relatively low. The presence of rebars increases the overall tensile strength of the concrete, making it less likely to crack under tension. The rebars create a bond with the concrete, forming a composite material that can withstand both compressive and tensile forces more effectively. In summary, steel rebars prevent cracking in concrete by providing reinforcement, absorbing tensile forces, and improving the overall strength and durability of the structure. They act as a skeleton within the concrete, distributing stress and preventing the formation of cracks, thereby ensuring the longevity and stability of the concrete construction.

Q: How are steel rebars used in the construction of tunnels and underground passages?: Steel rebars are an essential component in the construction of tunnels and underground passages. These rebars, also known as reinforcing bars, are used to provide additional strength and stability to the concrete structure. In tunnel construction, rebars are placed strategically within the concrete to reinforce it and prevent cracking or collapsing. The rebars act as a skeleton for the concrete, distributing the load and reinforcing its structural integrity. They are typically arranged in a grid pattern throughout the tunnel walls, floor, and ceiling. One of the key reasons why rebars are used in tunnel construction is their ability to withstand tension forces. Tunnels are subjected to significant pressure from the surrounding soil and water, and without proper reinforcement, the concrete would easily crack under this pressure. By adding steel rebars, the tensile strength of the concrete is greatly increased, ensuring that it can withstand the external forces acting upon it. Moreover, rebars also help to control and prevent the propagation of cracks. In the event of a crack occurring, the rebars act as a barrier, preventing the crack from spreading throughout the structure. This is crucial in tunnels and underground passages as any weakening of the concrete could compromise the safety of the structure and those using it. Additionally, rebars are used to reinforce specific areas of the tunnel that are more prone to stress, such as corners, joints, and areas where heavy equipment or vehicles may pass through. By reinforcing these critical points with steel rebars, the overall structural integrity of the tunnel is significantly enhanced. Overall, the use of steel rebars in the construction of tunnels and underground passages is vital to ensure the strength, stability, and longevity of these structures. They play a crucial role in preventing cracking, controlling the propagation of cracks, and enhancing the overall durability of the concrete.

Q: Can steel rebars be used in water treatment facilities?: Yes, steel rebars can be used in water treatment facilities. Steel rebars are commonly used in the construction of various structures, including water treatment facilities. They provide strength and durability to the concrete structures, ensuring their stability and longevity in the harsh environment of water treatment facilities.

Q: Can steel rebars be used in historical monument conservation?: Yes, steel rebars can be used in historical monument conservation. Steel rebars are commonly used in the restoration and strengthening of historical structures as they provide structural support and ensure the stability and longevity of the monument. However, it is essential to carefully analyze the impact of their installation on the historical value and authenticity of the monument. The use of steel rebars should be done in a way that minimizes any visual or aesthetic alterations to the monument, while still ensuring its preservation.

Q: How do steel rebars help in preventing cracks in concrete structures?: Steel rebars help in preventing cracks in concrete structures by providing reinforcement and increasing the tensile strength of the concrete. Concrete is strong in compression but weak in tension, and when subjected to external forces or changes in temperature, it tends to crack. However, by embedding steel rebars within the concrete, the tensile forces are transferred to the rebars, preventing the concrete from cracking. The rebars act as a skeleton within the concrete, distributing the tension forces evenly and preventing the formation of large cracks. This reinforcement also helps to control the size and width of any cracks that do occur, minimizing their impact on the overall structural integrity. Moreover, steel rebars help in preventing cracks by improving the ductility of the concrete. Ductility refers to the ability of a material to deform without breaking. The steel rebars provide flexibility to the concrete, allowing it to undergo small deformations without cracking. In addition, steel rebars also help in preventing cracks by reducing the effects of shrinkage and expansion. Concrete tends to shrink as it dries and expands when exposed to high temperatures. These shrinkage and expansion forces can lead to cracking, but the presence of steel rebars helps to counteract these effects by absorbing and distributing the forces. Overall, steel rebars play a crucial role in preventing cracks in concrete structures by reinforcing the concrete, increasing its tensile strength, improving its ductility, and countering the effects of shrinkage and expansion. This reinforcement ensures the structural integrity and durability of the concrete, making it more resistant to cracking and enhancing its overall performance and longevity.

Q: What are the guidelines for splicing steel rebars in a structure?: The guidelines for splicing steel rebars in a structure typically involve following the specifications and recommendations provided by the relevant building codes, engineering standards, and design plans. These guidelines may include requirements for the type and length of splice used, proper alignment and placement of rebars, minimum lap lengths, adequate reinforcement cover, and approved splicing methods such as mechanical or welding. It is crucial to consult with a structural engineer or a qualified professional to ensure compliance with the specific project requirements and to guarantee the structural integrity and safety of the building.

Q: What is the process of cutting steel rebars on-site?: The process of cutting steel rebars on-site involves several steps to ensure accurate and precise cuts. Here is a general outline of the process: 1. Measurement and Marking: First, the length required for the steel rebar is measured using a tape measure or other measuring tools. Once the desired length is determined, it is marked on the rebar using a chalk line or a permanent marker. 2. Safety Measures: Before proceeding with the cutting process, it is crucial to ensure safety. Workers should wear appropriate personal protective equipment (PPE), including gloves, safety glasses, and steel-toe boots. Additionally, the work area should be clear of any obstructions or hazards. 3. Set Up the Cutting Tools: There are various tools available for cutting steel rebars on-site, such as an angle grinder with a cutting disc, a reciprocating saw with a metal-cutting blade, or a rebar cutter. The chosen tool should be set up and secured according to the manufacturer's instructions. 4. Cutting the Rebar: Once the cutting tool is ready, the marked section of the rebar is positioned securely on a stable surface. The cutting tool is then carefully guided along the marked line, applying consistent pressure to achieve a clean and precise cut. It is essential to maintain control of the cutting tool throughout the process to avoid any accidents. 5. Inspecting the Cut: After the cut is made, it is important to inspect the quality of the cut. The cut end should be smooth and free from any burrs or rough edges. If necessary, a file or a grinding tool can be used to smooth out any imperfections. 6. Handling and Disposing: Once the steel rebar is cut to the desired length, it can be safely handled and used for its intended purpose. Any leftover pieces or scraps should be appropriately disposed of, following local regulations for metal waste disposal. It is crucial to note that the exact process and tools used for cutting steel rebars on-site may vary depending on the specific requirements, available equipment, and safety protocols of the construction site. It is always recommended to follow the manufacturer's instructions and consult with professionals when carrying out such tasks.

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