Hot rolled high quality deformed bar ASTM A615 GR40

Hot rolled high quality deformed bar ASTM A615 GR40 System 1

Hot rolled high quality deformed bar ASTM A615 GR40

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Loading Port:: Qingdao

Payment Terms:: TT OR LC

Min Order Qty:: 25 m.t.

Supply Capability:: 20000000 m.t./month

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Deformed Bar Details：

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

Steel Rebar / Deformed Bar / Reinforcing Bar

Q: How do steel rebars contribute to the overall durability and service life of concrete structures?: Concrete structures benefit from the inclusion of steel rebars in several ways, contributing to their overall durability and service life. To begin with, steel rebars are utilized in concrete structures to bolster their tensile strength. While concrete is strong under compression, it lacks strength when subjected to tension. Incorporating steel rebars, which possess high tensile strength, into the concrete significantly increases the overall strength and load-bearing capacity of the structure. This enables the structure to withstand external forces such as wind, earthquakes, or heavy loads, thereby reducing the risk of structural failure and enhancing its overall durability. Additionally, steel rebars play a vital role in preventing cracking and controlling the spread of cracks within concrete structures. As concrete dries and undergoes temperature fluctuations, it has a tendency to shrink and crack. The presence of steel rebars helps to distribute these forces and stresses throughout the structure, minimizing the formation and expansion of cracks. By restricting the propagation of cracks, the rebars contribute to the overall structural integrity and longevity of the concrete structure. Moreover, steel rebars offer reinforcement against corrosion. Concrete possesses high alkalinity, which generates a protective layer known as the passivation layer around the steel rebars. This layer safeguards the rebars from rusting and corroding when exposed to moisture or aggressive chemicals. By preserving the integrity of the rebars, the overall durability and service life of the concrete structure are enhanced. Furthermore, steel rebars are instrumental in improving the structural stability and resilience of concrete structures. By providing reinforcement and rigidity to the concrete, they aid in the even distribution and dissipation of applied loads and stresses. This diminishes the likelihood of localized failure and augments the structure's capability to withstand external forces and deformations. The presence of steel rebars also enhances the structural behavior of the concrete, rendering it more resilient to dynamic forces such as vibrations or impacts. In conclusion, steel rebars make a significant contribution to the overall durability and service life of concrete structures. They enhance the tensile strength of the concrete, prevent cracking and control the propagation of cracks, provide reinforcement against corrosion, and improve structural stability and resilience. By integrating steel rebars into concrete construction, engineers can create robust and long-lasting structures capable of withstanding various challenges, ensuring the safety and longevity of the built environment.

Q: Can steel rebars be used in nuclear power plant construction?: Yes, steel rebars can be used in nuclear power plant construction. Steel rebars are commonly used in reinforced concrete structures, including those found in nuclear power plants, to provide structural strength and durability. These rebars help reinforce the concrete and enhance the overall integrity and safety of the construction.

Q: Are steel rebars suitable for use in structures with high wind loads?: Yes, steel rebars are suitable for use in structures with high wind loads. Steel rebars provide strength and reinforcement to concrete structures, making them more resistant to high winds and ensuring the overall stability and durability of the structure.

Q: Are there any environmental benefits to using steel rebars?: There are numerous environmental advantages to utilizing steel rebars in construction. Here are some of the main benefits: 1. Recyclability: Steel rebars possess a high degree of recyclability, enabling them to be reused or repurposed once their lifespan in a structure comes to an end. This diminishes the need for new steel production and the associated energy consumption and greenhouse gas emissions. In fact, steel is one of the most widely recycled materials worldwide, boasting a recycling rate of approximately 90%. 2. Durability: Steel rebars are renowned for their strength and durability, granting structures a longer lifespan. This lessens the necessity for frequent replacements or repairs, resulting in reduced waste generation and the conservation of resources. 3. Energy efficiency: Steel production has become increasingly energy-efficient over time, thanks to advancements in technology and processes. This signifies that the environmental impact of steel production has been decreasing, making it a more sustainable choice in comparison to other materials. 4. Reduced deforestation: Steel rebars provide an alternative to timber reinforcement, which is often acquired through deforestation practices. By opting for steel rebars instead, we can help alleviate the pressure on forests and safeguard their invaluable ecosystem services. 5. Waste reduction: Steel rebars can be prefabricated and cut to precise lengths, minimizing waste on construction sites. Additionally, the scrap generated during the fabrication process can be recycled, further reducing waste generation. In conclusion, the utilization of steel rebars in construction offers a variety of environmental benefits, including recyclability, durability, energy efficiency, reduced deforestation, and waste reduction. These advantages contribute to a more sustainable and eco-friendly construction industry.

Q: Can steel rebars be used in wind turbine foundation construction?: Yes, steel rebars can be used in wind turbine foundation construction. Steel rebars are commonly used to reinforce concrete structures, including foundations, due to their high tensile strength and durability. They help enhance the structural integrity and stability of the foundation, making it suitable for supporting the weight and dynamic loads of wind turbines.

Q: Laiwu steel thread steel trademark color blue and red Qu Qu: In the purchase of rebar, first of all, from the surface quality, the surface of normal steel without cracks, scarring and folding. The surface shall have a bump, but shall not exceed the height of the cross rib, and shall also have a quality grade mark on the surface of the steel bar. Inferior thread steel due to rolling with adobe, its surface quality is poor, often with burrs, burrs, cracks, scarring, some distortions obvious, end of irregular, and even cracks. At the same time, some small mill due to heating temperature and rolling speed is not enough, the surface color is red, uneven color. Second, from the appearance of size, you can use vernier caliper to measure whether the actual size is consistent with the marked size (general thread steel rolled with specifications), if there is a difference in the standard deviation (such as? 16 the standard diameter of the thread steel is 15.4 + 0.4mm, while the quality of the false thread steel is mostly about 13mm. Third, regular steel at the factory, mostly large bundles of packaging, bundles of steel are linked with the physical corresponding metal signs, indicating the factory name, steel number, batch number, specifications and inspection code. But shoddy steel due to poor production conditions, no large hoisting equipment, mostly small (about ten strapping) package or in bulk, no metal signs, no guarantee of quality.

Q: How do steel rebars contribute to the sustainability of a building?: Steel rebars contribute to the sustainability of a building in several ways. Firstly, they provide structural strength and durability, allowing the building to withstand natural disasters and remain functional for a longer period. This reduces the need for frequent repairs or reconstruction, ultimately reducing resource consumption and waste generation. Secondly, steel rebars are recyclable, meaning they can be reused in future construction projects, reducing the demand for raw materials and minimizing the environmental impact of steel production. Additionally, the use of steel rebars in reinforced concrete structures allows for the use of thinner and lighter concrete sections, resulting in reduced material usage and lower carbon emissions during construction and transportation. Overall, steel rebars enhance the longevity, efficiency, and environmental performance of buildings, making them more sustainable.

Q: Can steel rebars be recycled after demolition?: Yes, steel rebars can be recycled after demolition. Steel is one of the most commonly recycled materials in the world due to its durability and recyclability. After a building or structure is demolished, the steel rebars can be extracted and sent to recycling facilities. These facilities use various processes, such as shredding and melting, to separate the steel from other materials and reshape it into new products. Recycling steel rebars not only reduces the amount of waste sent to landfills but also conserves natural resources and helps to lower carbon emissions associated with steel production.

Q: What are the different types of steel rebars used in underground constructions?: Underground constructions commonly employ various types of steel rebars, each serving a specific purpose. These rebars fortify concrete structures, enhancing their durability and strength. 1. Carbon Steel Rebars: The most prevalent kind of rebar used underground is carbon steel rebars. They boast high tensile strength due to their composition of carbon steel, rendering them suitable for diverse applications. 2. Epoxy-Coated Rebars: Carbon steel rebars receive an epoxy coating, transforming them into epoxy-coated rebars. This protective layer makes them resistant to corrosion, rendering them ideal for underground constructions where moisture and chemicals are present. 3. Stainless Steel Rebars: Stainless steel rebars offer exceptional resistance to corrosion and possess excellent strength properties. They are commonly employed in underground constructions that anticipate extreme environmental conditions, such as high humidity or exposure to saltwater. 4. Galvanized Rebars: Carbon steel rebars undergo a zinc coating process, resulting in galvanized rebars. This coating enhances their corrosion resistance, making them suitable for underground constructions situated in areas with elevated moisture levels or exposure to chemicals. 5. Fiberglass Rebars: Fiberglass rebars consist of glass fibers embedded within a resin matrix. They are lightweight, corrosion-resistant, and possess high tensile strength. Fiberglass rebars are frequently utilized in underground constructions that necessitate non-magnetic properties, such as proximity to sensitive equipment or areas susceptible to electromagnetic interference. The selection of a specific type of steel rebar for an underground construction project is based on its unique advantages and the project's specific requirements. Factors such as environmental conditions, load-bearing capacity, and anticipated lifespan are carefully considered when determining the appropriate steel rebar for a particular application.

Q: How do steel rebars affect the overall durability of marine structures?: Steel rebars greatly enhance the overall durability of marine structures. These reinforced bars provide additional strength and resilience, making the structures more resistant to corrosion, fatigue, and the constant exposure to harsh marine environments. By reinforcing the concrete, steel rebars increase the structural integrity, preventing cracks and enhancing load-bearing capacity, ensuring that marine structures can withstand the forces of waves, tides, and weather conditions, thereby prolonging their lifespan.

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