Hot rolled high quality deformed bar 10-50mm

Hot rolled high quality deformed bar 10-50mm System 1

Hot rolled high quality deformed bar 10-50mm

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 25 m.t.

Supply Capability:: 25000 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 are the factors that determine the spacing of steel rebars in a concrete structure?: The spacing of steel rebars in a concrete structure relies on various factors that guarantee the concrete's structural integrity and strength. These factors encompass: 1. Structural Design: The spacing of rebars is influenced by the structural design requisites and specifications of the concrete structure. Engineers take into account the loads, stresses, and forces that the structure will endure and compute the necessary reinforcement spacing accordingly. 2. Concrete Strength: The concrete's strength used in the structure is a pivotal determinant in establishing rebar spacing. Higher-strength concrete may necessitate closer spacing of rebars to provide ample reinforcement and prevent cracking or failure under load. 3. Rebar Diameter: The diameter of the steel rebars also contributes to determining the spacing. Thicker or larger diameter rebars may require wider spacing, while thinner rebars typically necessitate closer spacing to deliver the desired reinforcement. 4. Bar Bending and Placing: The ease of bending and placing the rebars during construction is another crucial factor. Often, practical considerations dictate the spacing, such as guaranteeing proper access for workers and equipment and facilitating the concrete pouring process. 5. Environmental Factors: Environmental conditions, including exposure to corrosive substances or extreme weather conditions, can impact rebar spacing. Closer spacing may be necessary in corrosive environments to provide additional protection against rust and deterioration. 6. Building Codes and Regulations: Local authorities or relevant organizations establish building codes and regulations that set the minimum requirements for rebar spacing in concrete structures. These codes ensure compliance with safety standards and offer guidelines for construction practices. In conclusion, the spacing of steel rebars in a concrete structure is a crucial aspect in ensuring its strength, durability, and resilience. It relies on a combination of factors, including structural design, concrete strength, rebar diameter, construction practicalities, environmental considerations, and adherence to building codes and regulations.

Q:How do steel rebars affect the overall cost of maintenance?: Steel rebars can significantly affect the overall cost of maintenance in several ways. Firstly, the quality and durability of steel rebars play a crucial role in ensuring the structural integrity of buildings and infrastructure. When steel rebars are of high quality and properly installed, they can enhance the strength and longevity of concrete structures, reducing the need for frequent repairs or replacements. This, in turn, lowers the maintenance costs over time. Additionally, steel rebars provide reinforcement to concrete, making structures more resistant to external forces such as seismic activities, heavy loads, and environmental factors like corrosion. By increasing the structural resilience, steel rebars can minimize the likelihood of damage and the subsequent maintenance expenses that would be required to fix or restore the affected areas. Moreover, proper maintenance of steel rebars themselves is essential to prevent corrosion. Without adequate preventive measures like regular inspections, cleaning, and applying protective coatings, rebars can succumb to rust and corrosion, ultimately compromising the structural integrity of the entire concrete structure. Corrosion-related repairs or replacements can be extremely costly and time-consuming, significantly impacting the overall maintenance budget. Lastly, the choice of steel rebars during the construction or renovation phase can also influence maintenance costs. Opting for higher-grade rebars with superior corrosion resistance can initially increase the upfront costs but can substantially reduce the long-term maintenance expenses. Investing in high-quality steel rebars can minimize the need for frequent repairs and replacements, resulting in overall cost savings and improved structural reliability. In conclusion, steel rebars have a direct impact on the overall cost of maintenance. By providing reinforcement and enhancing structural integrity, high-quality rebars can reduce the need for repairs, prevent damage, and improve the durability of concrete structures. However, neglecting proper maintenance of rebars can lead to corrosion issues, which can be expensive to address. Therefore, careful consideration of the quality, installation, and ongoing maintenance of steel rebars is essential to minimize maintenance costs in the long run.

Q:How do steel rebars contribute to the energy efficiency of a building?: Steel rebars contribute to the energy efficiency of a building by enhancing its structural integrity and durability. By reinforcing concrete structures, such as walls, columns, and beams, steel rebars help distribute and withstand the loads imposed on the building. This reduces the risk of structural failure and allows for the use of thinner concrete sections, which in turn saves on material and reduces the overall weight of the building. Consequently, the lighter building requires less energy for construction and transportation, and also decreases the demand on heating, cooling, and lighting systems, resulting in improved energy efficiency.

Q:What are the different corrosion protection methods for steel rebars?: There are several corrosion protection methods for steel rebars, including epoxy coating, galvanization, concrete cover, and cathodic protection. Epoxy coating involves applying a layer of epoxy paint on the rebar surface to prevent direct contact with corrosive agents. Galvanization is the process of coating the rebar with a layer of zinc, which acts as a sacrificial anode and protects the steel from corrosion. Concrete cover refers to the thickness of concrete surrounding the rebar, acting as a physical barrier against corrosive elements. Cathodic protection involves the use of a sacrificial anode or an impressed current system to create an electric field that prevents the corrosion of steel rebars.

Q:How do steel rebars contribute to sustainable construction practices?: Steel rebars contribute to sustainable construction practices in several ways. Firstly, they are made from recycled materials, reducing the need for new resources and minimizing the environmental impact of steel production. Additionally, steel rebars have a long lifespan and high durability, leading to less frequent replacement and maintenance, which in turn reduces waste and energy consumption. Moreover, steel rebars provide structural strength to reinforced concrete, allowing for the construction of taller and more efficient buildings, which can optimize land use and minimize the urban sprawl. Overall, steel rebars play a vital role in sustainable construction by promoting resource conservation, reducing waste, and enhancing the longevity and efficiency of structures.

Q:How do steel rebars affect the overall workability of concrete?: Steel rebars can greatly enhance the overall workability of concrete. By reinforcing the concrete, rebars provide structural integrity and strength, allowing for better handling and shaping during construction. Additionally, the presence of rebars helps to prevent cracking and increase the durability of the concrete structure.

Q:How do steel rebars affect the electrical conductivity of a structure?: The electrical conductivity of a structure is not significantly influenced by steel rebars. Despite steel being an excellent conductor of electricity, the presence of rebars in a structure does not have a substantial effect on its overall electrical conductivity. This is because the rebars are typically surrounded by concrete, which is a poor conductor of electricity. Consequently, the concrete acts as an insulator, preventing the flow of electrical current through the rebars. However, it is important to note that if there are any direct electrical connections or installations attached to the steel rebars, such as grounding systems, these can influence the electrical conductivity within that particular area. In conclusion, the presence of steel rebars in a structure does not significantly impact its overall electrical conductivity.

Q:What is the difference between steel rebars and FRP rebars?: Construction projects use steel rebars and FRP rebars as reinforcement materials, but they differ in composition and mechanical properties. Steel rebars, made of carbon steel, are known for their strength and durability, making them a reliable choice for reinforcing concrete structures. On the other hand, FRP rebars are composed of fibers embedded in a polymer matrix, such as glass or carbon. This composite material offers advantages over steel rebars. Firstly, FRP rebars are lighter, making them easier to handle and transport, reducing labor and equipment costs. Secondly, FRP rebars do not corrode, unlike steel rebars. Steel rebars are prone to corrosion when exposed to moisture and chemicals, weakening the structure over time. FRP rebars, however, are resistant to rust and corrosion, making them ideal for environments with high humidity, saltwater, or chemical exposure. Additionally, FRP rebars have a high resistance to electromagnetic fields, making them suitable for sensitive areas like hospitals, power plants, or telecommunication facilities, where minimizing electromagnetic interference is crucial. However, FRP rebars have lower tensile strength compared to steel rebars, making them less suitable for heavy-load-bearing structures. Moreover, FRP rebars initially cost more than steel rebars, but their long-term durability and reduced maintenance requirements can offset this expense. In conclusion, the differences between steel rebars and FRP rebars lie in their composition, mechanical properties, and performance in various environmental conditions. Steel rebars offer high tensile strength but are susceptible to corrosion, while FRP rebars are lighter, non-corrosive, and have a high resistance to electromagnetic fields. The choice between the two depends on project requirements, load-bearing needs, and environmental factors.

Q:What is the yield strength of different grades of steel rebars?: The yield strength of different grades of steel rebars varies depending on the specific grade. Generally, common grades of steel rebars such as Grade 40, Grade 60, and Grade 75 have yield strengths of approximately 40,000 psi, 60,000 psi, and 75,000 psi respectively. However, it is important to note that these values can vary slightly depending on the specific standard or specification being followed.

Q:How do steel rebars affect the overall strength of a structure?: Steel rebars significantly enhance the overall strength of a structure by providing reinforcement and increasing its tensile strength. They act as a skeleton within the concrete, distributing the load more evenly and preventing cracks or failures.

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