HRB400 deformed bars with competitive price good quality

HRB400 deformed bars with competitive price good quality System 1

HRB400 deformed bars with competitive price good 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	10mm-32mm

Length	6M, 12M
Place of origin	Hebei, China mainland
Advantages	exact size, regular package, chemical and mechanical properties are stable.
Type	Hot rolled deformed steel bar

Chemical Composition: (Please kindly find our chemistry of our material based on HRB400 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)
18	254.5	2.00	24
20	314.2	2.47	29.64
22	380.1	2.98	35.76

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

HRB400 deformed bars with competitive price good quality

*If you would like to get our price, please inform us the size, standard/material and quantity. Thank you very much for your attention.

Q:What is the process of straightening steel rebars?: The process of straightening steel rebars involves several steps to ensure the rebars are properly aligned and free from any bends or deformities. Firstly, the rebars are carefully inspected for any visible defects such as twists, kinks, or bends. This initial inspection is important to determine the extent of straightening required and whether any rebars need to be replaced. Once the inspection is complete, the rebars are loaded onto a straightening machine. This machine consists of rotating rollers or hydraulic pressure devices that apply force to the rebars to straighten them. The rebars are fed through the rollers or placed between the hydraulic devices, and pressure is applied gradually to reshape the bars and remove any bends or twists. During the straightening process, it is crucial to maintain control over the applied force to prevent over-straightening or causing any further damage to the rebars. Skilled operators monitor the machine and adjust the pressure accordingly to ensure the rebars are straightened accurately. After the rebars have been straightened, they undergo a final inspection to verify that they meet the required specifications. This inspection includes checking for any remaining deformities, ensuring the rebars are of the correct length, and confirming that they are straight within acceptable tolerances. It is important to note that the straightening process can vary depending on the type and size of the rebars. Different machines and techniques may be used for larger or more complex rebars. Additionally, the process may involve heating the rebars prior to straightening to make them more malleable. Overall, the process of straightening steel rebars involves careful inspection, the use of specialized machinery, skilled operators, and a final inspection to ensure the rebars are straight, aligned, and ready for use in various construction projects.

Q:Can steel rebars be used in residential swimming pool construction?: Yes, steel rebars can be used in residential swimming pool construction. Steel rebars are commonly used to reinforce concrete structures, including swimming pools. The rebars provide added strength and durability to the concrete, making it capable of withstanding the pressure and weight of the water. The use of steel rebars helps prevent cracking and structural damage to the pool over time. Moreover, steel rebars are readily available, cost-effective, and can be easily installed by professional pool builders. Overall, the inclusion of steel rebars in residential swimming pool construction is highly recommended to ensure a long-lasting and reliable pool structure.

Q:What are the different corrosion protection methods for steel rebars?: There are several corrosion protection methods available for steel rebars, which are commonly used in reinforced concrete structures. These methods aim to prevent or minimize the corrosion of the steel rebars, as corrosion can significantly weaken the overall structure. 1. Concrete Cover: The most common corrosion protection method is providing an adequate thickness of concrete cover over the steel rebars. The concrete acts as a physical barrier, preventing exposure of the rebars to corrosive elements. 2. Galvanization: Galvanizing involves coating the steel rebars with a layer of zinc. This protective layer acts as a sacrificial anode, corroding before the steel rebars. Galvanization significantly enhances the rebars' resistance to corrosion. 3. Epoxy Coating: Epoxy coating is a popular corrosion protection method where a layer of epoxy resin is applied over the steel rebars. The epoxy acts as a barrier, preventing moisture and corrosive substances from reaching the rebars. 4. Cathodic Protection: Cathodic protection is an electrochemical method that involves the application of a sacrificial anode or an impressed current system. In a sacrificial anode system, a more reactive metal, such as zinc or magnesium, is connected to the steel rebars, sacrificing itself and preventing corrosion. In an impressed current system, an external power source is used to provide a protective current to the rebars, preventing corrosion. 5. Corrosion Inhibitors: Corrosion inhibitors are chemicals added to the concrete mix or applied as a surface treatment to the rebars. These inhibitors form a protective film on the rebars' surface, preventing corrosion by blocking the access of corrosive agents. 6. Stainless Steel Rebars: Using stainless steel rebars is an effective corrosion protection method. Stainless steel has a high resistance to corrosion, making it suitable for structures exposed to aggressive environments. It is important to note that the selection of the appropriate corrosion protection method depends on various factors, including the environmental conditions, expected service life of the structure, and cost considerations. Additionally, regular inspection and maintenance of the corrosion protection system are essential to ensure its effectiveness over time.

Q:How are steel rebars connected or joined together during construction?: During construction, there are several methods and techniques for connecting steel rebars. One common method is to overlap the rebars and tie them together with steel wire, a process known as rebar tying or wire tying. To ensure a strong and secure connection, the rebars are overlapped at a length typically 40 to 60 times the diameter of the rebars. This overlapping length allows for load transfer and structural integrity. Once properly overlapped, steel wire is tightly wrapped around the intersection point to hold the rebars together. Another method is to use mechanical couplers, which are pre-fabricated devices that join two rebars together. These couplers provide a threaded connection, allowing for a more precise and efficient joining process. The rebars are inserted into the couplers and tightened using a wrench or appropriate tool. In larger construction projects, welding is also used to connect rebars. This involves melting the rebars at the intersection point and fusing them together with heat and pressure. Welding provides a strong and permanent connection but requires skilled labor and safety precautions. In some cases, rebars can be connected using epoxy bonding. This involves applying adhesive to the rebars' surface and pressing them together. The epoxy acts as a bonding agent, creating a durable connection. The method of connecting rebars depends on factors like rebars' size, project requirements, and construction techniques. It's important to follow industry standards and guidelines to ensure proper connection and integrity, as rebars play a critical role in reinforcing concrete structures.

Q:How do steel rebars impact the overall construction timeline?: Steel rebars play a crucial role in the overall construction timeline as they significantly impact the speed and efficiency of the construction process. The use of steel rebars helps in reinforcing the concrete structures, providing strength, durability, and resistance to the overall construction project. Firstly, steel rebars enable faster construction by reducing the curing time of concrete. When embedded within the concrete, rebars help to distribute the load evenly, making the structure stronger and allowing for quicker construction. This is especially important in high-rise buildings or large-scale projects where time is of the essence. Moreover, steel rebars enhance the structural integrity of the construction, ensuring that it can withstand various forces such as earthquakes, wind, and heavy loads. By reinforcing the concrete, rebars prevent cracks and failures, enhancing the longevity and safety of the building. This reduces the need for costly repairs or renovations in the future, thereby saving time in the long run. Additionally, the use of steel rebars allows for flexibility in design and construction. With rebars, architects and engineers can create complex structures, such as curved or irregular shapes, without compromising on strength or stability. This versatility reduces the time required for design modifications and construction alterations, enabling a faster overall timeline. Furthermore, steel rebars are readily available in the market and are manufactured to meet specific industry standards. This ensures a consistent supply of high-quality materials, reducing delays caused by material shortages or quality issues. Contractors can easily procure rebars, allowing for a smooth workflow and timely completion of the construction project. In conclusion, steel rebars have a significant impact on the overall construction timeline. They accelerate the construction process, increase the structural integrity, allow for design flexibility, and ensure a consistent supply of materials. By incorporating steel rebars into construction projects, contractors can save time, reduce potential setbacks, and deliver projects within the desired timeframe.

Q:What is the difference between the II and III grades of threaded steel?: Compared with traditional II grade steel, the characteristics are as follows:1, high corrosion resistance, can be a large number of security reserves.2. In the chemical composition, because of the low carbon equivalent of the new third grade steel, the welding performance is good.3, high strength ratio, meet the seismic performance requirements. Particularly suitable for high-rise buildings and high seismic performance requirements of the project.4, cold bending performance is good, can be repeatedly bent, more in line with and meet the construction requirements of the construction.5, because of the high strength, can reduce the use of steel, effectively solve the problem of reinforcing steel bars too close, easy to concrete pouring. At the same time, it also reduces the cost of steel transportation and on-site processing.

Q:How do steel rebars impact the constructability and formwork requirements of concrete elements?: Steel rebars have a significant impact on the constructability and formwork requirements of concrete elements. The presence of rebars adds strength and durability to the concrete structure, allowing for the construction of larger and more complex elements. However, the inclusion of rebars also necessitates careful planning and coordination during the formwork process. The formwork needs to be designed and installed in a way that accommodates the positioning and alignment of rebars, ensuring proper reinforcement and optimal structural integrity. Additionally, rebars can increase the weight and size of the concrete elements, affecting the logistics and handling during construction. Overall, steel rebars are essential for reinforcing concrete elements but require careful consideration and adaptation in terms of constructability and formwork requirements.

Q:What is the role of steel rebars in retaining walls?: The role of steel rebars in retaining walls is to reinforce and strengthen the structure, providing increased stability and resistance to lateral pressure exerted by the soil behind the wall. The rebars help to distribute the load evenly throughout the wall, preventing it from cracking or collapsing under the pressure.

Q:What is the weight of a typical steel rebar?: The size and length of a steel rebar can cause its weight to fluctuate. Nevertheless, a frequently employed size is the #4 rebar, boasting a 1/2 inch diameter. A #4 rebar usually carries a weight of approximately 0.67 pounds per foot or 9.5 pounds per 14-foot span. It is crucial to keep in mind that weights will vary for distinct sizes of steel rebar, thus necessitating consideration of the precise size and length in weight determination.

Q:What are the standard sizes of steel rebars?: The standard sizes of steel rebars typically range from 6mm to 50mm in diameter.

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