High quality hot rolled deformed bar 6mm-50mm

High quality hot rolled deformed bar 6mm-50mm System 1

High quality hot rolled deformed bar 6mm-50mm

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 25 m.t.

Supply Capability:: 20000000 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: Are steel rebars prone to rusting?: Steel rebars have a tendency to rust. Rebars are composed mainly of carbon steel, which contains iron. When exposed to moisture and oxygen, the iron in steel rebars undergoes a chemical reaction known as oxidation, resulting in the formation of rust or iron oxide. This process can be accelerated in environments with high humidity, coastal regions with saltwater exposure, or when the rebars come into contact with water or other corrosive substances. The rusting of steel rebars can weaken their structural integrity and compromise the strength and durability of concrete structures. Therefore, it is crucial to protect rebars from rust by applying anti-corrosion coatings or using stainless steel rebars in areas prone to rusting. Regular maintenance and inspection are also important for promptly identifying and addressing any rust-related issues.

Q: How do steel rebars contribute to the overall stiffness of a structure?: The stiffness of a structure is enhanced and reinforced by steel rebars, which also increase its load-bearing capacity. When steel rebars are embedded in concrete, they create a composite material called reinforced concrete. This material combines the compressive strength of concrete with the tensile strength of steel. The main role of steel rebars is to resist tensile forces that can lead to cracking or failure of the concrete. Although concrete has excellent compressive strength, it is weak in tension. By adding steel rebars, the overall stiffness of the structure is improved as the rebars take on the tensile stresses and prevent the concrete from failing under tension. Strategically placed within the concrete, the rebars are able to resist anticipated forces and evenly distribute them throughout the structure. As external loads, such as the weight of the building or environmental forces like wind or earthquakes, are applied to the structure, the rebars counteract the tension caused by these loads. This reinforcement guarantees the integrity and stability of the structure, preventing any significant deformations or collapse. Additionally, steel rebars contribute to the ductility of the structure. Ductility refers to a material's ability to deform without fracturing. Steel possesses high ductility, which, when incorporated into reinforced concrete, allows the structure to endure some level of flexure and movement without compromising its overall strength and stability. This improved ductility enhances the structural resilience, making the building more resistant to extreme external forces. To summarize, steel rebars are essential for enhancing the overall stiffness of a structure by reinforcing the concrete and providing tensile strength. They prevent cracking and failure under tension, evenly distribute forces, and enhance the structural resilience and ductility. By combining the compressive strength of concrete with the tensile strength of steel, steel rebars ensure the structure's ability to withstand various loads while maintaining stability and integrity over time.

Q: Can steel rebars be used in road or highway construction?: Road or highway construction can utilize steel rebars. Reinforcing bars, also known as steel rebars, are commonly employed in the construction sector to bolster the strength and support of concrete structures. In the realm of road and highway construction, rebars are typically utilized in the creation of reinforced concrete pavements, bridge decks, and retaining walls. By embedding rebars in concrete, its tensile strength can be enhanced, as concrete is robust in compression but weak in tension. The addition of rebars to the concrete aids in distributing tensile forces, thus enhancing the overall longevity and load-bearing capacity of road or highway infrastructure. The utilization of steel rebars in road or highway construction presents numerous advantages. Firstly, it enhances the structural integrity and lifespan of the infrastructure, as reinforced concrete structures are better equipped to withstand heavy traffic loads, temperature fluctuations, and environmental factors. Secondly, rebars assist in mitigating cracking and deterioration of the concrete, thereby reducing the necessity for frequent repairs and maintenance. Additionally, the utilization of rebars allows for more efficient and cost-effective construction, as it permits the use of thinner concrete sections without compromising strength. All in all, steel rebars are an indispensable component in road or highway construction, as they provide the essential reinforcement to ensure the strength, durability, and longevity of the infrastructure.

Q: Can steel rebars be used in structures with high chemical exposure?: No, steel rebars are not suitable for structures with high chemical exposure. They are susceptible to corrosion and can deteriorate rapidly when exposed to chemicals, compromising the structural integrity of the building.

Q: Can steel rebars be used in the construction of religious buildings?: Yes, steel rebars can be used in the construction of religious buildings. Steel rebars provide structural strength and reinforcement to concrete, making them suitable for various types of construction, including religious buildings.

Q: How do steel rebars contribute to the overall sustainability of a project?: Steel rebars contribute to the overall sustainability of a project in several ways. Firstly, steel rebars are highly durable and have a long lifespan, which means they do not need to be replaced frequently. This reduces the consumption of resources and minimizes the need for new material production, thereby decreasing the environmental impact of the project. Additionally, steel rebars are fully recyclable. At the end of their life cycle, they can be easily collected, melted down, and repurposed into new steel products. This recycling process significantly reduces the demand for raw materials, conserves energy, and decreases the amount of waste going to landfills. Furthermore, steel rebars provide structural strength and enhance the overall safety and resilience of the project. By reinforcing concrete structures, steel rebars help increase their load-bearing capacity and resistance to external forces, such as earthquakes or extreme weather events. This ensures the longevity and stability of the project, reducing the need for repairs or reconstruction in the future. Lastly, the use of steel rebars in construction projects often results in shorter construction time and lower maintenance costs. The ease of handling and installing steel rebars allows for efficient construction processes, leading to reduced energy consumption and lower greenhouse gas emissions. Moreover, the durability and low maintenance requirements of steel rebars minimize the need for ongoing repairs and replacements, resulting in cost savings over the project's lifespan. In conclusion, steel rebars contribute to the overall sustainability of a project by being durable, recyclable, and enhancing structural strength and safety. Their use reduces resource consumption, waste generation, and energy consumption, while also providing long-term cost savings. Incorporating steel rebars in construction projects is a sustainable choice that promotes environmental conservation, economic efficiency, and social resilience.

Q: Are there any environmental concerns associated with steel rebar production?: Yes, there are environmental concerns associated with steel rebar production. The process of extracting iron ore and other raw materials, as well as the high energy consumption in steel production, contribute to greenhouse gas emissions and air pollution. Additionally, the disposal of waste materials and the potential for water pollution during manufacturing can also pose environmental risks. However, advancements in technology and the adoption of more sustainable practices in steel production can help mitigate these concerns.

Q: Does the grade three thread steel with "E" have the same information price as the ordinary three grade thread steel? Is there a big difference?: Hello, with E thread steel is seismic rebar, without E is the common thread steel, general seismic thread with E was higher than that of ordinary steel prices, the price difference between 50 and 100 yuan, according to the specific market situation.

Q: What is the recommended minimum cover for steel rebars in concrete?: The recommended minimum cover for steel rebars in concrete is typically 1.5 inches for interior applications and 2 inches for exterior applications. However, it is important to consult the local building codes and engineering specifications for specific project requirements.

Q: What are the guidelines for repairing or replacing corroded steel rebars in existing structures?: The guidelines for repairing or replacing corroded steel rebars in existing structures vary depending on the severity of the corrosion and the specific requirements of the project. However, there are some general guidelines that can be followed: 1. Assessment: Before proceeding with any repairs or replacements, a thorough assessment of the corrosion damage should be conducted. This may involve visual inspections, non-destructive testing, or even laboratory analysis of samples taken from the rebars. 2. Safety: Safety should always be the top priority when working with corroded rebars. Adequate precautions should be taken to ensure the safety of workers and surrounding areas. This may include the use of personal protective equipment and ensuring a stable work environment. 3. Determine the extent of corrosion: It is important to determine the extent of corrosion and whether it has affected the structural integrity of the rebars. This can help in deciding whether repair or replacement is necessary. 4. Repair methods: Depending on the severity of corrosion, various repair methods can be employed. These may include removing the corroded portion of the rebar and applying a corrosion inhibitor or protective coating, or using electrochemical techniques such as cathodic protection to prevent further corrosion. 5. Replacement: If the corrosion damage is extensive and repair is not feasible, the corroded rebars may need to be replaced. The replacement rebars should be of the same or higher grade and should be properly anchored to maintain the structural integrity of the existing structure. 6. Design considerations: When repairing or replacing corroded rebars, it is important to consider the design requirements of the structure. The repaired or replaced rebars should meet the necessary load-bearing capacity and should be properly integrated into the existing structure. 7. Quality control: Throughout the repair or replacement process, rigorous quality control measures should be implemented to ensure the effectiveness and durability of the repairs. This may include regular inspections, testing, and monitoring of the repaired or replaced rebars. It is important to note that these guidelines are general recommendations and should be tailored to the specific circumstances and requirements of each project. Therefore, it is advisable to consult with a structural engineer or a professional experienced in repairing corroded steel rebars for a more accurate and detailed guideline.

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