deformed steelbar

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HRB400 Deformed Steel Bar

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Hot Rolled Deformed Bar HRB400 or BS449 B500B

Reinforcing Deformed Steel Bars in Grade HRB400

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

Q: How do steel rebars impact the overall construction timeline?: The speed and efficiency of the construction process are greatly influenced by the presence of steel rebars. These rebars are essential for reinforcing concrete structures, providing them with strength, durability, and resistance. To begin with, the use of steel rebars contributes to faster construction by reducing the time required for concrete to cure. When embedded in concrete, rebars evenly distribute the load, resulting in a stronger structure and expedited construction. This is especially crucial for tall buildings or large-scale projects where time is of the essence. Furthermore, steel rebars enhance the structural integrity of the construction, ensuring its ability to withstand forces like earthquakes, wind, and heavy loads. By reinforcing the concrete, rebars prevent cracks and failures, thereby increasing the longevity and safety of the building. This eliminates the need for costly repairs or renovations in the future, ultimately saving time in the long run. In addition, the use of steel rebars allows for greater flexibility in design and construction. Architects and engineers can create intricate structures with curved or irregular shapes without compromising strength or stability thanks to the presence of rebars. This versatility reduces the time required for design modifications and construction alterations, ultimately expediting the overall timeline. Moreover, steel rebars are readily available in the market and conform to specific industry standards. This ensures a consistent supply of high-quality materials, minimizing delays caused by material shortages or issues with quality. Contractors can easily obtain rebars, facilitating a smooth workflow and timely completion of the construction project. In conclusion, steel rebars have a significant impact on the overall construction timeline. They expedite the construction process, enhance structural integrity, allow for design flexibility, and ensure a consistent supply of materials. By incorporating steel rebars into construction projects, contractors can save time, reduce potential setbacks, and deliver projects within the desired timeframe.

Q: Can steel rebars be used in high-temperature applications?: No, steel rebars should not be used in high-temperature applications as they can lose their strength and structural integrity due to thermal expansion and potential oxidation.

Q: How is steel rebar made?: Steel rebar is made through a process called "hot rolling," where steel billets are heated and then passed through a series of rollers to shape them into long, straight bars. These bars are then cut into desired lengths and surface treated to enhance their strength and corrosion resistance.

Q: What is the corrosion resistance of steel rebars?: The surface of steel rebars forms a protective layer, known as a passive film, which provides excellent corrosion resistance. This film is created when the steel interacts with the surrounding environment. By acting as a barrier, the passive film prevents oxygen and moisture from reaching the steel, thus inhibiting corrosion. There are various factors that contribute to the corrosion resistance of steel rebars. For example, the presence of alloying elements like chromium, nickel, and molybdenum improves the formation and stability of the passive film, making the rebars more resistant to corrosion. Additionally, the composition and microstructure of the steel rebars play a crucial role in determining their resistance to corrosion. However, it is important to note that the corrosion resistance of steel rebars can be compromised under certain conditions. High levels of chlorides, such as those in marine environments or de-icing salts, can accelerate corrosion and reduce the effectiveness of the passive film. Similarly, exposure to acidic or alkaline environments can also negatively affect the corrosion resistance of steel rebars. To minimize the risk of corrosion, various protective measures can be taken. These include applying coatings or paints to the rebars, using corrosion inhibitors, or implementing cathodic protection systems. Regular inspection, maintenance, and proper design and construction practices are also essential to ensure the long-term corrosion resistance of steel rebars in different applications. In conclusion, the excellent corrosion resistance of steel rebars is due to the formation of a protective passive film. However, this resistance can be influenced by factors such as the environment, alloying elements, and microstructure. By implementing appropriate protective measures and maintenance practices, the corrosion resistance of steel rebars can be effectively maintained, ensuring their durability and structural integrity.

Q: How are steel rebars classified based on their grades?: Steel rebars are classified based on their grades according to their tensile strength, which is measured in mega pascals (MPa). The most common grades include Grade 40, Grade 60, and Grade 75, with each grade corresponding to a specific minimum tensile strength requirement.

Q: Can steel rebars be used in water treatment plant construction?: Yes, steel rebars can be used in water treatment plant construction. Steel rebars are commonly used in the construction of various structures, including water treatment plants, due to their high strength and durability. They provide reinforcement to concrete structures and ensure their integrity and longevity, making them suitable for use in water treatment plant construction.

Q: What does "4EDT6" mean on thread steel?: It is a long strip of steel with a hollow cross section. It can be divided into round tube, square tube, hexagonal tube and all kinds of special-shaped section steel tube according to its sectional shape. According to the different processing technology, seamless steel pipe and welded pipe can be divided into two categories.

Q: What are the common mistakes to avoid while using steel rebars in construction?: There are a few common mistakes to avoid when using steel rebars in construction. Firstly, it is important to ensure that the rebars are properly aligned and spaced according to the engineering design. Incorrect spacing can compromise the strength and integrity of the structure. Secondly, rebars should be adequately protected from corrosion by using proper concrete cover and providing adequate concrete curing. Failure to do so can lead to premature deterioration of the rebars and the overall structure. Lastly, it is crucial to use appropriate bending and cutting techniques to prevent any damage or weakening of the rebars during installation. By avoiding these mistakes, the longevity and safety of the construction project can be ensured.

Q: Can steel rebars be used in buildings with high architectural requirements?: Yes, steel rebars can be used in buildings with high architectural requirements. Steel rebars are widely used in construction due to their strength, durability, and versatility. They provide structural integrity and reinforcement to concrete structures, making them suitable for a wide range of architectural designs and requirements. Steel rebars can be used in various architectural elements, such as beams, columns, walls, slabs, and foundations. They can be bent, shaped, and welded to meet specific architectural designs, allowing for intricate and complex structures. Additionally, they can be customized in terms of size, length, and spacing, ensuring that they meet the architectural requirements of the building. Moreover, steel rebars are resistant to fire, corrosion, and extreme weather conditions, making them suitable for buildings with high architectural requirements in terms of safety and durability. They provide a long-lasting solution, ensuring that the architectural vision and design can be preserved for years to come. In conclusion, steel rebars can definitely be used in buildings with high architectural requirements. Their strength, durability, versatility, and customization options make them an ideal choice for ensuring structural integrity while meeting the aesthetic and design requirements of the building.

Q: What are the different sizes of steel rebars available in the market?: The sizes of steel rebars available in the market vary depending on the specific needs and requirements of construction projects. Generally, steel rebars come in a range of diameters, commonly ranging from 6mm to 40mm. These sizes are designated by the nominal diameter of the rebar. The most commonly used sizes of steel rebars in the market are 6mm, 8mm, 10mm, 12mm, 16mm, 20mm, 25mm, 32mm, and 40mm. These sizes are widely used in various construction applications and are readily available in most hardware stores. The choice of rebar size depends on the structural design, the load-bearing capacity required, and the specific construction project. Smaller diameter rebars, such as 6mm or 8mm, are commonly used in light construction projects or where lesser load-bearing capacity is needed. On the other hand, larger diameter rebars, such as 25mm or 32mm, are often used in heavy-duty construction projects or structures requiring higher load-bearing capacity. It is important to consult with structural engineers or construction professionals to determine the appropriate rebar size for a specific project, as they can provide guidance based on the design requirements and structural calculations.

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