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: All knowledge about thread steel!: Steel is commonly known as hot rolled ribbed bar, belonging to the small steel steel, mainly used for steel reinforced concrete structure frame. In use, some mechanical strength, bending deformation property and welding performance are required. The raw steel billet for the production of threaded steel is carbon structural steel or low alloy structural steel which is treated by calm melting, and the finished steel bar is delivered in hot rolling forming, normalizing or hot rolling state.

Q: What are the different types of steel rebars available for different applications?: There are several types of steel rebars available for different applications, including carbon steel rebars, epoxy-coated rebars, stainless steel rebars, and galvanized rebars. Each type has its own unique properties and benefits, making them suitable for various construction projects based on factors like corrosion resistance, strength requirements, and environmental conditions.

Q: Can steel rebars be painted or coated?: Yes, steel rebars can be painted or coated. Painting or coating steel rebars helps to protect them from corrosion and extend their lifespan. It is a common practice in construction and reinforcement projects to apply paint or protective coatings on steel rebars to enhance their durability and resistance to environmental factors.

Q: What is the standard size of a steel rebar?: The size of a steel rebar can vary depending on the particular application and project requirements. In construction and civil engineering, the standard sizes for steel rebars commonly used are typically 10mm, 12mm, 16mm, 20mm, 25mm, and 32mm in diameter. These sizes are widely accessible and utilized in different structural elements like beams, columns, and slabs. Furthermore, the length of a steel rebar can vary, usually ranging from 6 meters to 12 meters, depending on the project specifications. To determine the appropriate size of steel rebar for a specific construction project, it is crucial to consult the project engineer or refer to the relevant building codes and standards.

Q: Can steel rebars be prefabricated off-site?: Absolutely, steel rebars can be manufactured off-site through the process of prefabrication. This method involves creating construction components in a controlled environment that is separate from the actual construction site. Steel rebars, which are frequently used to reinforce concrete structures, can be fabricated off-site in a specialized facility. Prefabricating steel rebars off-site provides several advantages. Firstly, it enables a more efficient and streamlined manufacturing process. By working in a controlled environment, the rebars can be produced with great precision and accuracy, ensuring consistent quality. This reduces the likelihood of errors and minimizes wastage. Furthermore, manufacturing steel rebars off-site can save time during the construction phase. Since the rebars are manufactured beforehand, they can be delivered to the site ready for installation, eliminating the need for on-site fabrication. This significantly speeds up the construction process and improves project timelines as a whole. Moreover, prefabrication offers improved safety conditions. By manufacturing the rebars off-site, workers are exposed to fewer on-site hazards, such as working at great heights or in confined spaces. The controlled environment of a fabrication facility also allows for better quality control and compliance with safety regulations. Lastly, prefabrication contributes to cost savings. The efficient production process, reduced on-site labor, and improved construction timelines all help to lower overall project costs. Additionally, the controlled environment of a fabrication facility enables better utilization of materials and decreases wastage. In summary, steel rebars can indeed be prefabricated off-site, providing numerous benefits such as enhanced quality, time savings, improved safety, and cost-effectiveness. This practice is widely utilized in construction projects to optimize efficiency and ensure the highest standards of construction.

Q: Can steel rebars be used in structures with high resistance to UV radiation?: Structures with high exposure to UV radiation typically do not recommend the use of steel rebars. Traditional carbon steel rebars are vulnerable to corrosion when exposed to UV radiation. The sun's rays can degrade the protective oxide layer on the surface of the steel, leading to rust and deterioration over time. Furthermore, UV radiation can cause the steel to expand and contract, weakening its overall strength and structural integrity. To address these concerns, alternative materials like stainless steel rebars or epoxy-coated rebars are commonly employed in structures that require high UV radiation resistance. Stainless steel rebars possess greater corrosion resistance and durability when exposed to UV radiation. Epoxy-coated rebars have a protective layer of epoxy coating that shields the steel from direct UV radiation, mitigating the risk of corrosion. Consulting structural engineers and professionals is crucial in determining the appropriate type of rebars for structures with high UV radiation resistance. Factors such as the specific environment, climate conditions, and project requirements should be carefully considered to ensure the structure's longevity and safety.

Q: How long do steel rebars last in structures?: Steel rebars can last for several decades in structures, typically ranging from 50 to 100 years, depending on various factors such as the quality of the steel, environmental conditions, and maintenance practices.

Q: How do steel rebars affect the thermal conductivity of concrete structures?: Steel rebars have a significant impact on the thermal conductivity of concrete structures. The inclusion of steel rebars in concrete increases the overall thermal conductivity of the structure. This is because steel has a much higher thermal conductivity than concrete. Consequently, heat transfer through the concrete is facilitated by the presence of steel rebars, leading to a higher overall thermal conductivity of the structure.

Q: What is the role of steel rebars in preventing structural collapse?: The prevention of structural collapse is a crucial role played by steel rebars, as they reinforce concrete structures. While concrete is strong in compression, it lacks strength in tension. This is where steel rebars come into play, effectively enhancing the tensile strength of the concrete. When a building or any concrete structure is subjected to structural loads, the rebars distribute the load across a wider area. This prevents the concrete from cracking and failing under stress. By providing a means for the concrete to resist tension and bending forces, steel rebars help maintain the integrity and stability of the structure. In addition to improving tensile strength, rebars also increase the overall ductility and flexibility of the concrete. This is especially important during events like earthquakes or high winds, as structures must withstand significant lateral forces. The presence of rebars allows the concrete to absorb and dissipate these forces, reducing the risk of structural failure. Furthermore, steel rebars play a role in preventing structural collapse by resisting the effects of corrosion. When embedded in concrete, the rebars are shielded from moisture and other corrosive elements. This ensures their long-term durability and ability to support the structure. To summarize, steel rebars are essential components in preventing structural collapse. They reinforce concrete structures, enhance tensile strength, improve ductility, resist corrosion, and ultimately contribute to the overall safety and stability of buildings and other concrete constructions.

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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