Deformed bars with grade HRB400,high quality

Deformed bars with grade HRB400,high quality System 1

Deformed bars with grade HRB400,high 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

Deformed bars with grade HRB400,high 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 purpose of steel rebars?: Steel rebars serve the purpose of reinforcing and strengthening concrete structures. These rebars, also referred to as reinforcing bars, consist of steel rods or wires, which function as tension devices to provide extra strength to the concrete. By being embedded within the concrete, rebars aid in the even distribution of applied loads, thereby preventing the concrete from cracking or failing when under pressure. This reinforcement is particularly crucial in structures like buildings, bridges, and highways, which endure heavy loads or potential stress, as it enhances their durability and structural integrity. Due to their strength, durability, and resistance to corrosion, steel rebars are extensively utilized in construction projects. As an essential component, they ensure the long-term stability and safety of concrete structures.

Q: How are steel rebars used in water treatment plants?: Steel rebars are commonly used in water treatment plants to reinforce the concrete structures that are essential for the plant's operations. These rebars provide strength and durability to the concrete, ensuring that the structures can withstand the harsh conditions and loads associated with water treatment processes.

Q: How are steel rebars made?: Steel rebars are made through a process called hot rolling, where steel billets (large chunks of steel) are heated to a malleable temperature and then passed through a series of rollers to shape them into long, cylindrical bars. These bars are then cut to the desired length and surface treated to improve their corrosion resistance.

Q: Can steel rebars be used in foundation systems?: Yes, steel rebars can be used in foundation systems. Steel rebars are commonly used as reinforcement in concrete foundations to provide additional strength and stability. They help to distribute the load evenly and prevent cracking or failure of the foundation.

Q: Are steel rebars fire resistant?: Steel rebars are generally considered to possess fire resistance. Steel, as a material, cannot burn or contribute to the spread of fire because it is incombustible. When exposed to fire, steel rebars can endure high temperatures for a prolonged duration without compromising their structural integrity. This ability is attributed to the high melting point of steel, which stands at approximately 1370 degrees Celsius (2500 degrees Fahrenheit). Moreover, during construction, steel rebars are often encased in concrete, which adds an extra layer of protection against fire. However, it is important to note that under extremely intense and long-lasting fire conditions, steel may gradually weaken and lose its ability to bear loads. Hence, fire protection measures like the application of fire-resistant coatings or fireproofing materials are sometimes implemented to further enhance the fire resistance of steel structures.

Q: Can steel rebars be used in marine structures?: Yes, steel rebars can be used in marine structures. However, it is crucial to use corrosion-resistant rebars, such as stainless steel rebars or epoxy-coated rebars, to prevent corrosion in the harsh marine environment.

Q: What are the guidelines for inspecting steel rebars on a construction site?: Inspecting steel rebars on a construction site requires adherence to specific guidelines to ensure the structural integrity and compliance with safety standards. Here are some essential guidelines for inspecting steel rebars: 1. Visual Inspection: Begin by visually assessing the entire rebar installation, checking for any signs of damage, rust, or corrosion. Look for proper alignment, spacing, and placement of rebars as per the construction drawings. 2. Rebar Size and Type: Verify that the rebars used match the specifications outlined in the construction plans. Inspect the size, grade, and type of steel rebars to ensure they meet the required standards and are suitable for the intended load-bearing capacity. 3. Placement and Spacing: Ensure that rebars are properly spaced and positioned according to the design drawings. Check for proper lap length (the overlapping of rebars) to ensure structural stability and load distribution. 4. Clear Cover: Inspect the clear cover, which is the distance between the outer surface of the rebar and the surface of the concrete. Verify that the clear cover meets the specified requirements, as it is crucial for corrosion protection and structural durability. 5. Vertical Alignment: Check the vertical alignment or plumbness of the rebars. They should be straight and in line with the required position, avoiding excessive bending or curving. 6. Rebar Connections: Inspect the connections between rebars, such as lap splices or mechanical couplers. Verify that the connections are properly made and comply with approved construction standards. 7. Welding: If welding is used to join rebars, ensure that it is performed by certified welders and meets the required specifications. Inspect the quality of welding joints, including the penetration depth and the absence of defects or cracks. 8. Protective Coating: Verify the presence and condition of any protective coating applied to the rebar, such as epoxy coatings or galvanization, to prevent corrosion and increase longevity. 9. Documentation: Maintain detailed records of the inspection process, including photographs, measurements, and any deviations or corrective actions taken. These records will serve as essential documentation for quality control and future reference. 10. Compliance with Codes and Standards: Ensure that the inspection adheres to relevant local building codes, industry standards, and project specifications. Familiarize yourself with the applicable regulations to ensure compliance throughout the inspection process. By following these guidelines, construction site inspectors can help ensure the quality, safety, and longevity of steel rebars, ultimately contributing to the overall success of the construction project.

Q: Can steel rebars be used in structures with high levels of carbonation or acid attack?: Structures with high levels of carbonation or acid attack should avoid using steel rebars. Carbonation occurs when alkaline compounds in concrete react with carbon dioxide from the atmosphere, resulting in a decrease in the concrete's pH level. This can cause the corrosion of steel rebars, as the lower pH levels create an acidic environment that promotes rusting. Similarly, acid attack happens when structures come into contact with acidic substances like industrial chemicals or acid rain. Acidic environments accelerate the corrosion process by further lowering the pH levels of the concrete, increasing the risk of steel rebar deterioration. To prevent these problems, structures exposed to high levels of carbonation or acid attack can use alternative materials such as stainless steel, epoxy-coated rebars, or fiber-reinforced polymer rebars. These materials possess improved corrosion resistance properties, ensuring better durability in challenging environments. It is essential to consider the specific conditions in which the structure will be exposed and seek advice from structural engineers to select the most suitable materials for long-term performance and safety.

Q: Can steel rebars be used in historical building restoration?: Yes, steel rebars can be used in historical building restoration. Rebars are commonly used in construction to reinforce concrete structures and provide additional strength and durability. When it comes to historical building restoration, the goal is to preserve the original character and aesthetics of the structure while ensuring its structural integrity. Steel rebars can be carefully integrated into the restoration process to strengthen weak areas or replace deteriorated or damaged sections. The use of rebars allows for a more stable and long-lasting structure, ensuring the building's longevity for future generations. However, it is important to ensure that the use of steel rebars in historical building restoration is done in a way that respects the historical significance of the structure. The integration of rebars should be done discreetly, ensuring they do not compromise the building's original appearance or architectural features. Additionally, any restoration work on historical buildings should adhere to strict preservation guidelines and be carried out by skilled professionals with expertise in historical preservation. This ensures that the restoration process maintains the historical integrity of the building while incorporating necessary structural reinforcements, such as steel rebars.