High quality deformed barhot rolled 10-50mm

High quality deformed barhot rolled 10-50mm System 1

High quality deformed barhot rolled 10-50mm

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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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Deformed Bar Details:

Minimum Order Quantity:		Unit:	m.t.	Loading Port:
Supply Ability:		Payment Terms:		Package:	wire rod packing

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: What is the role of steel rebars in the construction of wastewater treatment plants?: Steel rebars play a crucial role in the construction of wastewater treatment plants as they provide structural reinforcement to concrete elements. By adding strength and stability, rebars help ensure the longevity and durability of the treatment plant infrastructure, which is essential for withstanding the corrosive and harsh environment found in wastewater treatment facilities.

Q: All knowledge about thread steel!: Main origin: steel manufacturers in China are mainly distributed in the north and northeast, North China, Tang Gang, such as Shougang steel, bearing steel, such as the northeast, north of Fushun Steel resistant, etc., these two regions accounted for more than 50% of the total output of thread steel.The difference between round bar and round bar is that the surface has longitudinal ribs and transverse ribs, usually with two longitudinal ribs and transverse ribs uniformly distributed along the length direction. The rebar is a kind of small section steel, mainly used for the skeleton of reinforced concrete construction members. 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 is the role of steel rebars in the construction of highway overpasses?: Steel rebars play a crucial role in the construction of highway overpasses as they provide reinforcement and strength to the concrete structures. Rebars are used to reinforce the concrete, preventing cracks and improving its resistance to tension and bending forces. This reinforcement ensures the durability, stability, and overall safety of the highway overpasses, allowing them to withstand heavy loads and harsh external conditions.

Q: How do steel rebars impact the overall cost of a construction project?: Steel rebars can have a significant impact on the overall cost of a construction project. While they add to the material costs, they also enhance the strength and durability of structures, reducing the need for future repairs or replacements. Additionally, steel rebars contribute to the overall efficiency and speed of construction, reducing labor costs and project timelines. Therefore, although they may increase upfront expenses, steel rebars can provide long-term cost savings and ensure the structural integrity of the project.

Q: How do steel rebars affect the durability of concrete in freeze-thaw cycles?: The durability of concrete in freeze-thaw cycles can be greatly enhanced by steel rebars. When exposed to freezing and thawing conditions, concrete undergoes expansion and contraction. During freezing, the water inside the concrete pores freezes and expands, exerting pressure on the surrounding concrete matrix. This can lead to cracks and deterioration of the concrete. However, the inclusion of steel rebars in the concrete can help alleviate these problems. Steel has a lower coefficient of thermal expansion compared to concrete, meaning it expands and contracts less with temperature changes. This property allows the steel rebars to absorb the stresses generated during freeze-thaw cycles, preventing significant damage to the concrete structure. Furthermore, steel rebars also reinforce the concrete, increasing its overall strength and toughness. This reinforcement helps distribute the stresses caused by freeze-thaw cycles more evenly throughout the concrete, reducing the likelihood of crack formation or propagation. Moreover, steel rebars act as a barrier against water penetration into the concrete. Moisture is a major contributor to freeze-thaw damage. The steel rebars assist in creating a more impermeable concrete structure by reducing the size and number of cracks, preventing water from entering and causing further deterioration. To sum up, steel rebars play a vital role in enhancing the durability of concrete in freeze-thaw cycles. Their ability to absorb stresses, reinforce the concrete, and prevent water penetration significantly reduces the potential for damage and extends the lifespan of the concrete structure.

Q: Can steel rebars be used in structures with high humidity levels?: Yes, steel rebars can be used in structures with high humidity levels. However, it is important to ensure proper corrosion protection measures are in place to prevent rusting and deterioration of the rebars over time. This can include using corrosion-resistant coatings or stainless steel rebars, as well as proper concrete cover to create a barrier between the rebar and the surrounding environment. Regular maintenance and inspections are also necessary to monitor and address any signs of corrosion.

Q: What is the maximum allowable stress for steel rebars?: The maximum allowable stress for steel rebars is typically determined by design codes and standards, which vary depending on the specific application and country. However, in general, the maximum allowable stress for steel rebars is usually around 0.6 times the yield strength of the steel.

Q: Can steel rebars be used in structures with limited construction materials?: Steel rebars have the potential to be utilized in structures where there is a scarcity of construction materials. They are extensively employed in construction for reinforcing concrete structures, like buildings, bridges, and highways. Their role is to enhance the strength and stability of the structure, enabling it to endure heavy loads and prevent structural failure. In regions where construction materials may be limited, steel rebars can be an invaluable asset. Their durability and versatility make them suitable for various applications, rendering them a flexible choice for construction projects. Furthermore, their ease of transportation and installation make them appropriate for implementation in remote or inaccessible areas. Nonetheless, it is crucial to take into account the specific requirements and regulations of the construction project when employing steel rebars. Adequate knowledge and expertise are imperative to ensure accurate installation and adherence to safety standards. Additionally, if there are any specific limitations or restrictions on the usage of particular construction materials, it is crucial to seek advice from local authorities or professionals to determine the most suitable course of action.

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. Rebars, also known as reinforcement bars, are widely used in concrete construction to enhance the strength and durability of structural elements. Firstly, the presence of rebars affects the constructability of concrete elements by providing structural integrity and load-bearing capacity. By adding rebars in strategic locations within the concrete, such as beams, columns, and slabs, the overall strength and stability of the structure are significantly improved. This allows for the construction of larger and more complex concrete elements, as the rebars help to distribute the loads more efficiently. Moreover, rebars also impact the formwork requirements of concrete elements. Formwork refers to the temporary structure used to hold the concrete in place until it sets and gains sufficient strength to support itself. The inclusion of rebars necessitates careful consideration when designing the formwork, as the presence of reinforcement bars can increase the weight and volume of the concrete. The size, spacing, and positioning of rebars influence the formwork design and construction process. The formwork must be designed to accommodate the rebars and ensure proper concrete placement and consolidation around them. This may require additional reinforcement in the formwork, such as tie wires or supports, to prevent displacement or movement of the rebars during concrete pouring. Furthermore, rebars also impact the overall timeline and cost of the construction project. The need for additional formwork materials and reinforcement can increase both the material and labor costs. Moreover, the presence of rebars may require additional time for the formwork installation, concrete pouring, and curing process, as the rebars need to be properly positioned and secured within the concrete elements. In conclusion, steel rebars have a significant impact on the constructability and formwork requirements of concrete elements. They enhance the structural integrity of the concrete, allowing for the construction of larger and more complex elements. However, their inclusion also necessitates careful planning and design of the formwork, taking into consideration the size, spacing, and positioning of the rebars. Overall, rebars play a crucial role in ensuring the strength, stability, and longevity of concrete structures.

Q: What are the guidelines for repairing or replacing corroded steel rebars in existing structures?: The severity of corrosion and project-specific requirements determine the guidelines for repairing or replacing corroded steel rebars in existing structures. However, there are some general guidelines that can be followed: 1. Before proceeding with any repairs or replacements, conduct a thorough assessment of the corrosion damage. This may involve visual inspections, non-destructive testing, or laboratory analysis of samples taken from the rebars. 2. Always prioritize safety when working with corroded rebars. Take adequate precautions to ensure the safety of workers and surrounding areas. This may include using personal protective equipment and creating a stable work environment. 3. Determine the extent of corrosion and its impact on the structural integrity of the rebars. This will help determine whether repair or replacement is necessary. 4. Use various repair methods depending on the severity of corrosion. These methods may include removing the corroded portion of the rebar and applying a corrosion inhibitor or protective coating. Electrochemical techniques such as cathodic protection can also be used to prevent further corrosion. 5. If repair is not feasible due to extensive corrosion damage, consider replacing the corroded rebars. The replacement rebars should be of the same or higher grade and properly anchored to maintain the structural integrity of the existing structure. 6. Consider the design requirements of the structure when repairing or replacing corroded rebars. The repaired or replaced rebars should meet the necessary load-bearing capacity and be properly integrated into the existing structure. 7. Implement rigorous quality control measures throughout the repair or replacement process 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 customized 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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