Deformed Steel Bar Hot Rolled HRB4000 HRB500 ASTM A615 GR40/GR60

Deformed Steel Bar Hot Rolled HRB4000 HRB500 ASTM A615 GR40/GR60 System 1

Deformed Steel Bar Hot Rolled HRB4000 HRB500 ASTM A615 GR40/GR60 System 2

Deformed Steel Bar Hot Rolled HRB4000 HRB500 ASTM A615 GR40/GR60 System 3

Deformed Steel Bar Hot Rolled HRB4000 HRB500 ASTM A615 GR40/GR60

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 500 m.t.

Supply Capability:: 30000 m.t./month

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Product Description:

Specifications of HRB500 Deformed Steel Bar:

Standard	GB	HRB500
Diameter	6mm,8mm,10mm,12mm,14mm,16mm,18mm,20mm, 22mm,25mm,28mm,32mm,36mm,40mm,50mm

Length	6M, 9M,12M or as required
Payment term	TT or L/C
Application	mainly used in construction industry to reinforce concrete structures and so on
Quality	First quality, the goods are from Chinese big manufacturers.
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
HRB500	≤0.25	≤1.60	≤0.80	≤0.045	≤0.045		0.08-0.12
	Physical capability
	Yield Strength (N/cm²)		Tensile Strength (N/cm²)			Elongation (%)
	≥500		≥630			≥12

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 HRB500 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..

Product Description:

Quick Details

Standard:ASTM, BS, GB, JIS
Grade:HRB335
Diameter:6-50mm
Length:6-12m
Place of Origin:Tianjin, China (Mainland)
Application:construction
Deformed Steel Bar:Original Tianjin China
Standard1:BS4449
Standard2:ASTM A615
Standard3:GB/T1449
Grade1:HRB335
Grade2:HRB400
Grade3:HRB500
Grade4:460B
Grade5:GR.40
Grade6:GR.60

Packaging & Delivery

Packaging Details:	with bundle and bare packing
Delivery Detail:	within 15-20days

Specifications

Deformed Steel Bar
1).Standard:BS4449 ASTM A 615
2).Grade:HRB335/400/500,460B,GR40/60
3) Experience : 5years for exporting

Tianjin Baolf Steel Co.,Limited
Standard	BS4449 ASTM A615 GB/T1499
Grade	HRB335/400/500,460B,GR40/60
Diameter	6-50mm
Length	6,9,12m
Technique	Hot Rolled
Application	For Construction

Q: What are the factors to consider when choosing steel rebars for a project?: When choosing steel rebars for a project, some important factors to consider include the grade and quality of the steel, the rebar size and shape needed, the project requirements and specifications, the cost and availability of the rebars, and any specific environmental or corrosion resistance needs. Additionally, the steel rebars should comply with relevant industry standards and codes to ensure their suitability and performance in the project.

Q: Can steel rebars be used in thin concrete elements?: Yes, steel rebars can be used in thin concrete elements. Rebars provide tensile strength to concrete, preventing cracks and enhancing its structural integrity. However, it is important to ensure proper spacing and cover requirements to avoid corrosion and maintain durability.

Q: What are the guidelines for spacing steel rebars in reinforced concrete?: The guidelines for spacing steel rebars in reinforced concrete vary depending on the specific design and requirements of the project. However, some general guidelines include maintaining a minimum spacing between rebars to allow for proper concrete flow and consolidation during placement, typically ranging from 1.5 to 2.5 times the diameter of the bar. Additionally, rebars should be adequately spaced to ensure proper cover and to prevent overcrowding, which can hinder the structural integrity of the concrete. It is crucial to consult the project's structural engineer or refer to the relevant building codes and standards for specific spacing requirements.

Q: How do steel rebars affect the overall fire safety of concrete structures?: Steel rebars can have both positive and negative effects on the overall fire safety of concrete structures. On one hand, steel rebars can help enhance the fire resistance of concrete structures. Concrete has a relatively low thermal conductivity, which means it does not conduct heat easily. However, when exposed to fire, concrete can crack and lose its structural integrity. The presence of steel rebars helps to mitigate this issue by providing additional tensile strength to the concrete. The rebars act as reinforcement, helping to prevent the concrete from cracking and collapsing under the intense heat of a fire. On the other hand, steel rebars can also pose some challenges to the fire safety of concrete structures. Steel is a good conductor of heat, which means that it can transfer heat from the fire to other parts of the structure. This can potentially lead to the weakening of the concrete and compromise the overall fire safety. Additionally, steel rebars can expand when exposed to high temperatures, which may cause further cracking and damage to the concrete. To address these challenges, various measures can be taken to improve the fire safety of concrete structures with steel rebars. The use of fire-resistant coatings or fireproofing materials on the rebars can help to minimize the heat transfer from the steel to the surrounding concrete. Fire-resistant insulation or fire barriers can also be installed around the rebars to further protect the concrete from the heat of a fire. Additionally, proper design and construction practices, including the appropriate spacing and size of rebars, can help to ensure that the concrete structure maintains its fire resistance. In conclusion, steel rebars play a crucial role in the fire safety of concrete structures. While they can enhance the fire resistance of concrete, they can also present challenges such as heat transfer and expansion. By implementing appropriate measures and construction practices, the negative effects of steel rebars on fire safety can be minimized, and the overall fire resistance of concrete structures can be improved.

Q: Can steel rebars be used in underground parking garage construction?: Yes, steel rebars can be used in underground parking garage construction. Steel rebars are commonly used in the construction of reinforced concrete structures, including underground parking garages, to provide strength and durability to the concrete. The rebars are embedded within the concrete to resist tension and enhance the overall structural integrity of the garage.

Q: What are the advantages of using stainless steel rebars?: There are several advantages of using stainless steel rebars in construction projects. Firstly, stainless steel rebars have a high resistance to corrosion, making them ideal for use in structures exposed to harsh environments such as coastal or industrial areas. Unlike traditional carbon steel rebars, stainless steel rebars do not rust or corrode easily, ensuring the longevity and durability of the structure. Secondly, stainless steel rebars have a higher tensile strength compared to carbon steel rebars. This means that they can withstand greater stress and loads without deforming or breaking, resulting in a safer and more reliable structure. The high tensile strength also allows for the use of smaller rebars, saving construction costs and reducing the overall weight of the structure. Moreover, stainless steel rebars have excellent fire resistance properties. In the event of a fire, stainless steel maintains its strength and integrity much better than carbon steel, reducing the risk of structural collapse. This is particularly important in buildings with high fire safety requirements such as hospitals, schools, and high-rise structures. Another advantage of stainless steel rebars is their low maintenance requirements. Due to their resistance to corrosion, they do not require regular inspections or costly protective coatings, saving both time and money in maintenance efforts. Lastly, stainless steel rebars are highly sustainable and environmentally friendly. They are 100% recyclable, reducing the demand for new raw materials and minimizing waste in construction projects. Additionally, the long lifespan of stainless steel rebars reduces the need for frequent replacements, further reducing the environmental impact. In summary, the advantages of using stainless steel rebars include excellent corrosion resistance, high tensile strength, superior fire resistance, low maintenance requirements, and sustainability. These benefits make stainless steel rebars a preferred choice for construction projects that require durability, safety, and long-term value.

Q: Can steel rebars be used for both residential and commercial constructions?: Indeed, steel rebars find utility in both residential and commercial constructions. These sturdy reinforcement materials are frequently employed in concrete structures, imparting them with resilience and steadfastness. Whether it be a residential abode or a commercial edifice, steel rebars are apt for diverse construction ventures. Their utilization guarantees longevity and structural soundness in both domains. Furthermore, steel rebars can be tailored to accommodate specific project prerequisites, rendering them adaptable and fitting for a myriad of applications in residential and commercial construction alike.

Q: How are steel rebars marked for identification?: Steel rebars are typically marked for identification by using different methods such as paint, tags, or embossed markings. These markings usually include information such as the grade of steel, manufacturer's logo, and bar size.

Q: How do steel rebars help in preventing cracks in concrete structures?: Steel rebars contribute to the prevention of cracks in concrete structures by providing reinforcement and enhancing the tensile strength of the concrete. While concrete possesses strength in compression, it lacks strength in tension, making it prone to cracking when exposed to external forces or temperature changes. However, by embedding steel rebars within the concrete, the rebars absorb the tensile forces, thereby preventing the concrete from cracking. The rebars function as a framework within the concrete, evenly distributing the tension forces and averting the formation of significant cracks. This reinforcement also regulates the size and width of any cracks that do appear, minimizing their impact on the overall structural integrity. Moreover, steel rebars assist in crack prevention by enhancing the ductility of concrete. Ductility refers to a material's ability to deform without breaking. The steel rebars offer flexibility to the concrete, allowing it to undergo minor deformations without cracking. Furthermore, steel rebars aid in crack prevention by mitigating the effects of shrinkage and expansion. As concrete dries, it tends to shrink, while exposure to high temperatures causes it to expand. These forces of shrinkage and expansion can lead to cracking. However, the presence of steel rebars counteracts these effects by absorbing and dispersing the forces. In conclusion, steel rebars play a vital role in averting cracks in concrete structures by reinforcing the concrete, augmenting its tensile strength, improving its ductility, and counterbalancing the effects of shrinkage and expansion. This reinforcement ensures the concrete's structural integrity and durability, rendering it more resistant to cracking and enhancing its overall performance and lifespan.

Q: Can steel rebars be used in foundation underpinning?: Yes, steel rebars can be used in foundation underpinning. Steel rebars provide structural reinforcement and can be used to strengthen and stabilize the existing foundation during underpinning works.

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