Carbon Steel Rebar Direct

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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.

Q: How do steel rebars affect the overall seismic performance of buildings?: The utilization of steel rebars plays a vital role in enhancing the seismic performance of buildings as a whole. When properly integrated into the structural system, these reinforced bars offer substantial strength and ductility to the building, enabling it to effectively withstand seismic forces. One of the main advantages of steel rebars lies in their ability to augment the tensile strength of concrete structures. Although concrete possesses compression strength, it lacks tension strength. By incorporating steel rebars within the concrete, the tensile strength is significantly enhanced, thereby preventing the concrete from cracking or failing under the strain of seismic forces. In the event of an earthquake, steel rebars aid in distributing the seismic forces throughout the structure, minimizing localized damage and ensuring a more uniform response. Serving as a network of interconnected elements, the rebars transfer the energy generated by the earthquake to the surrounding areas, thus reducing vulnerability to localized failures. Furthermore, steel rebars enhance the ductility of the building, enabling it to deform without compromising its structural integrity. During an earthquake, buildings encounter substantial lateral forces, and the ductility provided by the rebars allows the structure to absorb and dissipate these forces through controlled deformation. This prevents sudden and catastrophic failure, granting occupants more time to evacuate in a safe manner. Moreover, steel rebars can be strategically positioned in critical areas of the building, such as at beam-column connections, where the highest stresses occur during an earthquake. By reinforcing these vulnerable points, the rebars ensure that the building maintains its structural integrity and remains resistant to collapse. To summarize, the integration of steel rebars significantly enhances the overall seismic performance of buildings by increasing tensile strength, distributing seismic forces, enhancing ductility, and reinforcing critical areas. Their incorporation into the structural system helps mitigate the potential for damage and ensures the safety of occupants during seismic events.

Q: What are the safety precautions to be followed while working with steel rebars?: When working with steel rebars, it is crucial to follow certain safety precautions to prevent accidents and injuries. Here are some precautions to consider: 1. Personal Protective Equipment (PPE): Always wear appropriate PPE, including safety glasses, gloves, hard hats, and steel-toed boots. These items will protect you from potential hazards such as falling objects, sharp edges, and flying debris. 2. Training and Knowledge: Before working with steel rebars, ensure that you have received proper training and understand the safety protocols associated with this task. Familiarize yourself with the equipment being used and understand the potential risks involved. 3. Proper Lifting Techniques: Steel rebars can be heavy and awkward to handle. Always use proper lifting techniques, such as bending your knees and using your legs to lift rather than your back. Never attempt to lift a rebar that is too heavy for you; ask for assistance if needed. 4. Secure Storage: Store steel rebars in a designated area that is clear of any potential obstructions. Stack them in a stable manner to prevent them from toppling over and causing injuries. 5. Safe Handling: When moving steel rebars, be cautious of their sharp edges and potential for injury. Use appropriate lifting equipment, such as cranes or forklifts, if necessary. Avoid dragging or sliding rebars, as this can cause strains or sprains. 6. Fall Protection: If working at heights or near open edges, ensure that proper fall protection measures are in place. This may include using guardrails, safety harnesses, or safety nets to prevent falls. 7. Fire Safety: Steel rebars can become extremely hot when exposed to heat or flame. Ensure that there are proper fire prevention measures in place, such as fire extinguishers, and be cautious when working near flammable materials. 8. Communication: Maintain clear communication with co-workers and supervisors to ensure everyone is aware of their surroundings and potential hazards. Use hand signals or radios when working in noisy environments. 9. Regular Inspections: Regularly inspect steel rebars for any defects, such as cracks or sharp edges, that could pose a safety risk. Remove any damaged or faulty rebars from use immediately. 10. First Aid and Emergency Procedures: Be familiar with first aid procedures and emergency protocols in case of accidents or injuries. Have a well-stocked first aid kit readily available on-site and know the location of the nearest medical facility. By following these safety precautions, you can minimize the risk of accidents and injuries while working with steel rebars. Always prioritize your safety and the safety of those around you.

Q: What is the impact of steel rebars on the constructability of a project?: Steel rebars have a significant impact on the constructability of a project. These reinforcement bars play a crucial role in strengthening and providing structural integrity to concrete structures. By incorporating steel rebars, the overall strength, durability, and resilience of a construction project are greatly improved. One of the key impacts of using steel rebars is the increased load-bearing capacity of the structure. Rebars are designed to withstand tension, which complements the concrete's ability to resist compression. This combination enhances the structural strength of the project, enabling it to withstand heavy loads and external forces, such as earthquakes or high winds. Moreover, steel rebars also enhance the ductility of the concrete structure. Ductility refers to the material's ability to deform without breaking. By adding rebars, the concrete becomes more flexible, allowing it to absorb energy and deform under stress before reaching its breaking point. This is particularly important in areas prone to seismic activities, as it helps prevent sudden and catastrophic failure of the structure. Another aspect of constructability impacted by steel rebars is the overall lifespan of the project. The corrosion resistance properties of rebars, especially when coated or galvanized, significantly extend the lifespan of the structure. This is particularly relevant in environments with high humidity, coastal areas, or regions with harsh weather conditions. By preventing corrosion and maintaining the integrity of the rebars, the entire project's longevity and durability are greatly enhanced. Additionally, steel rebars also facilitate the construction process itself. Their availability in various lengths, shapes, and sizes allows for flexible and efficient design and construction. Contractors can easily cut, bend, and shape rebars to fit specific project requirements, reducing construction time and costs. Moreover, rebars can be prefabricated off-site, minimizing on-site labor and simplifying the construction process. In conclusion, the impact of steel rebars on the constructability of a project is highly significant. They improve the overall strength, load-bearing capacity, ductility, and lifespan of the structure. Additionally, the flexibility and ease of use of steel rebars contribute to efficient construction practices. Therefore, incorporating steel rebars into a project is essential for ensuring its structural integrity and long-term success.

Q: How do steel rebars affect the overall acoustic properties of a structure?: The overall acoustic properties of a structure are greatly affected by steel rebars, also known as reinforcement bars. Steel rebars can have both positive and negative effects on the acoustic characteristics of a building or infrastructure. One way in which steel rebars impact the acoustic properties is through their ability to transmit sound vibrations. Steel, being a good conductor of sound, easily allows sound waves to travel. Consequently, when steel rebars are present in a structure, they act as pathways for sound transmission, allowing it to easily travel throughout the building. This can result in increased noise levels and reduced acoustic privacy, as sound waves can travel through the steel rebars and reach different areas of the structure. However, steel rebars can also contribute to the overall sound insulation of a structure. When properly installed and integrated with other construction materials like concrete or acoustic insulation materials, steel rebars help reduce the transmission of sound waves. The stiffness and mass of steel rebars help dampen the vibrations caused by sound waves, thereby reducing the amount of sound that passes through the structure. This enhances the acoustic comfort within the building, creating a quieter environment suitable for various activities that require reduced noise levels. It is important to note that the impact of steel rebars on the acoustic properties of a structure depends on various factors, including the thickness and density of the surrounding construction materials, the arrangement and spacing of the rebars, and the overall design of the building. Additionally, the use of additional acoustic treatments like sound-absorbing panels or insulation can further improve the acoustic performance of a structure by mitigating the negative effects of steel rebars. In conclusion, steel rebars play a significant role in the overall acoustic properties of a structure. While they can facilitate the transmission of sound waves, they can also contribute to sound insulation when combined with appropriate construction materials and techniques. Proper design and implementation, along with the use of additional acoustic treatments, are crucial in achieving the desired acoustic environment in buildings and infrastructure where steel rebars are present.

Q: Can steel rebars be used in high-strength concrete?: Indeed, steel rebars have the capability of being utilized in high-strength concrete. In reality, steel rebars are commonly employed to reinforce concrete structures, regardless of the concrete's strength. High-strength concrete pertains to a type of concrete that possesses a significantly higher compressive strength when compared to conventional concrete. Its compressive strength typically exceeds 6,000 psi (pounds per square inch). The presence of steel rebars in high-strength concrete is essential as they provide the necessary tensile strength. Although concrete exhibits commendable compressive strength, its tensile strength is relatively feeble. By incorporating steel rebars into the concrete, the composite material becomes more robust and durable. The rebars act as reinforcement, effectively resisting the tensile forces and averting cracks or structural failure. Nevertheless, it is crucial to emphasize the importance of selecting the appropriate steel rebar for high-strength concrete. The rebars employed must possess adequate strength and ductility to endure the elevated stresses and strains associated with high-strength concrete. Moreover, proper placement, spacing, and anchorage of the rebars are vital to ensure effective reinforcement and optimal performance of the concrete structure. In summary, it is undeniable that steel rebars can certainly be utilized in high-strength concrete to augment its tensile strength and overall structural integrity.

Q: Can steel rebars be used in the construction of hospitals?: Yes, steel rebars can be used in the construction of hospitals. Steel rebars are commonly used as reinforcement in concrete structures, providing strength and stability. In hospitals, where the structural integrity and safety are of utmost importance, steel rebars are crucial for ensuring the strength and durability of the building.

Q: How do steel rebars affect the weight of a concrete structure?: Steel rebars increase the weight of a concrete structure as they are added to provide reinforcement. The weight of the rebars themselves adds to the overall weight, but their main impact is in increasing the load-bearing capacity and strength of the concrete, allowing it to withstand greater forces and improve the structural integrity.

Q: What is the difference between three - grade steel and other grades?: 1, different grades of steel (chemical composition is different). HRB335 grade steel is 20MnSi (20 manganese silicon); HRB400 grade steel bars are 20MnSiV or 20MnSiNb or 20MnTi etc.;2, strength is different, HRB335 grade steel tensile and compressive design strength is 300MPa, HRB400 grade steel tensile and compressive design strength is 360MPa.

Q: What is the role of steel rebars in preventing structural failures?: The construction industry relies heavily on steel rebars to prevent structural failures. These reinforcing bars, also known as steel rebars, are vital for strengthening and reinforcing concrete structures, ensuring their durability and ability to withstand various forces. One of the main functions of steel rebars is to improve the tensile strength of concrete. While concrete is excellent for compression, it lacks strength in tension. By incorporating steel rebars into concrete structures, this weakness can be overcome by providing resistance to tensile forces. Acting as reinforcements, steel rebars effectively absorb and distribute tensile stresses throughout the structure, preventing the formation of cracks and fractures, and ultimately averting structural failures. Moreover, steel rebars play a critical role in enhancing overall structural stability and preventing failures. By reinforcing concrete, rebars enhance the structural integrity and increase the load-bearing capacity of the structure. This allows the structure to withstand heavier loads and forces, including those caused by natural disasters, extreme weather conditions, or human activities. Steel rebars are also indispensable in preventing structural failures resulting from corrosion. Concrete structures are exposed to various environmental factors, such as moisture, chemicals, and salts, which can cause corrosion of the reinforcing steel. However, as steel rebars are typically coated or protected with anti-corrosive materials, they act as a barrier against corrosion, ensuring the long-term durability and integrity of the structure. Furthermore, steel rebars contribute to preventing structural failures by providing stability during construction. They are strategically placed within the concrete forms at critical points and areas susceptible to high stress. This ensures that the structure remains stable and can withstand the loads and forces exerted during and after construction. In conclusion, the role of steel rebars in preventing structural failures is multifaceted. They enhance the tensile strength of concrete, increase structural stability, prevent corrosion, and provide stability during construction. By reinforcing concrete, steel rebars significantly contribute to the overall strength, durability, and safety of structures, ultimately averting structural failures and ensuring the longevity of the built environment.

Q: How do steel rebars contribute to the overall resistance against natural disasters?: Steel rebars contribute to the overall resistance against natural disasters by reinforcing structures such as buildings, bridges, and dams. They enhance the strength and stability of these structures, making them more resistant to earthquakes, hurricanes, and other natural calamities. Steel rebars increase the structural integrity, prevent collapse, and distribute the force of the disaster, reducing the extent of damage and protecting lives and property.

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