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 is the lifespan of a steel rebar in a concrete structure?: The lifespan of a steel rebar in a concrete structure can vary depending on various factors such as the quality of the rebar, the design and construction of the structure, and the environment it is exposed to. However, on average, steel rebars in concrete structures can last for several decades to even over a century if properly designed, constructed, and maintained.

Q:What is the standard length of steel rebars?: The standard length of steel rebars typically ranges from 6 meters to 12 meters, depending on the specific requirements and regulations of the construction industry in different countries.

Q:What are the different types of steel rebars used in elevated highways?: There are several types of steel rebars commonly used in elevated highways due to their strength and durability. These rebars are designed to provide structural support and reinforcement to the concrete structures in highways. 1. Mild Steel Rebars: Also known as black steel rebars, these are the most commonly used type of rebars in elevated highways. They are made from carbon steel and have a relatively low tensile strength. Mild steel rebars are cost-effective and provide adequate reinforcement for most highway structures. 2. High-strength Steel Rebars: These rebars are manufactured using high-strength low-alloy (HSLA) steels, which have higher tensile strength compared to mild steel rebars. They are used in areas of the highway that require additional strength and load-bearing capacity. High-strength steel rebars are especially beneficial in bridges and elevated structures where heavy traffic or seismic activity is expected. 3. Epoxy-coated Rebars: To enhance the corrosion resistance of the rebars, epoxy coating is applied to the surface of the steel. Epoxy-coated rebars are commonly used in areas with high exposure to moisture, such as coastal highways or regions with high humidity. The epoxy coating acts as a barrier between the steel and the external environment, preventing corrosion and extending the lifespan of the rebars. 4. Galvanized Rebars: Similar to epoxy-coated rebars, galvanized rebars are also corrosion-resistant. However, instead of an epoxy coating, they are coated with a layer of zinc. Galvanized rebars are known for their excellent resistance to corrosion caused by exposure to harsh chemicals or saline environments. They are commonly used in coastal areas or regions with high levels of pollution. 5. Stainless Steel Rebars: These rebars are made from stainless steel, which is a corrosion-resistant alloy containing chromium and nickel. Stainless steel rebars provide excellent resistance to corrosion, making them ideal for use in highly corrosive environments, such as highways near chemical plants or industrial areas. Although more expensive than other types of rebars, stainless steel rebars offer long-term durability and require minimal maintenance. It is important to consider the specific requirements and environmental conditions of the elevated highway project when selecting the appropriate type of steel rebars. Consulting with structural engineers and following local building codes and regulations is essential to ensure the safety and longevity of the highway structures.

Q:The difference between rebar and crescent: Rebar -- steel used in concrete structures with a generally rounded cross section and ribbed surface.Longitudinal ribs -- uniform continuous ribs parallel to the axis of the steel bar -- other ribs not parallel to the axis of the reinforcement.The longitudinal section of crescent ribbed bars -- transverse rib reinforced crescent, and does not intersect with longitudinal ribs.

Q:How do steel rebars affect the overall fire safety of concrete structures?: The overall fire safety of concrete structures can be affected by steel rebars, both positively and negatively. On the positive side, steel rebars can strengthen the fire resistance of concrete structures. Concrete has low thermal conductivity, which means it doesn't easily conduct heat. However, exposure to fire can cause concrete to crack and lose its integrity. Steel rebars help address this issue by providing additional tensile strength, acting as reinforcement to prevent cracking and collapse under intense heat. On the flip side, steel rebars can pose challenges to fire safety. Steel is a good heat conductor, transferring heat from the fire to other parts of the structure. This can weaken the concrete and compromise overall fire safety. Furthermore, steel rebars can expand under high temperatures, potentially causing more cracking and damage to the concrete. To improve fire safety in concrete structures with steel rebars, several measures can be taken. Applying fire-resistant coatings or fireproofing materials on the rebars can minimize heat transfer to the surrounding concrete. Installing fire-resistant insulation or fire barriers around the rebars can also offer additional protection. Proper design and construction practices, including appropriate spacing and size of rebars, are crucial to maintaining the fire resistance of the concrete structure. In conclusion, steel rebars have a significant impact on the fire safety of concrete structures. While they enhance fire resistance, challenges such as heat transfer and expansion must be addressed. By implementing appropriate measures and construction practices, the negative effects of steel rebars on fire safety can be minimized, resulting in improved fire resistance for concrete structures.

Q:What is the impact of steel rebars on the overall cost of a construction project?: Steel rebars have a significant impact on the overall cost of a construction project. Since rebars are essential for reinforcing concrete structures, their cost directly affects the expenses associated with the project. The quantity, quality, and market price of steel rebars contribute to the overall budget, making them a crucial factor to consider during project estimation and cost management.

Q:12 of the threaded steel can replace 16 of the screw steel? But the same proportion. Thanks: Now Tianjin Tiantai into 12 of the price is 3900 yuan a ton, 16 tons of steel a price is 3850 yuan. 12 of thread steel is 50 yuan more expensive than 16 thread steel.

Q:How are steel rebars used in parking structures?: Steel rebars are used in parking structures to reinforce and strengthen the concrete, increasing its load-bearing capacity and durability. They are typically placed in the concrete to resist tension and prevent cracking, ensuring the structure's stability and longevity.

Q:How are steel rebars protected from concrete spalling?: Steel rebars are protected from concrete spalling through the use of various methods and techniques. One common method is to provide a concrete cover over the rebars. This means that the rebars are embedded within the concrete structure, ensuring that they are not directly exposed to external elements or conditions that could cause spalling. The thickness of the concrete cover is typically specified in construction codes and standards to ensure adequate protection. Another way to protect steel rebars from concrete spalling is by using corrosion inhibitors. These inhibitors are typically added to the concrete mix during the construction process. They work by reducing the corrosion rate of the steel rebars, thereby protecting them from spalling caused by rusting and corrosion. In addition to concrete cover and corrosion inhibitors, proper concrete mix design is crucial in protecting steel rebars. The use of high-quality concrete with appropriate water-cement ratio, sufficient strength, and proper curing greatly enhances the resistance of the concrete against spalling. This ensures that the rebars remain securely embedded within the concrete structure and are not exposed to moisture or other deteriorating agents that could lead to spalling. Furthermore, proper construction practices such as adequate compaction of concrete, proper placement and alignment of rebars, and effective waterproofing measures also contribute to the protection of steel rebars from concrete spalling. These practices help to minimize the chances of moisture ingress and the formation of cracks or voids that could expose the rebars to the risk of spalling. Overall, a combination of concrete cover, corrosion inhibitors, proper concrete mix design, and appropriate construction practices are essential in protecting steel rebars from concrete spalling. By implementing these measures, the durability and longevity of concrete structures can be significantly improved.

Q:How are steel rebars protected against lightning strikes?: The process of "bonding" shields steel rebars from lightning strikes. When constructing a building, steel rebars are linked to a lightning protection system to safely redirect the electrical energy of a lightning strike into the ground. This system typically comprises lightning rods or air terminals positioned at the highest points of the building to attract the lightning strike. Subsequently, the rebars are interconnected with conductor cables, creating a network that effectively grounds the lightning current. The conductor cables are fastened to the lightning rods and extend down the building, connecting with the rebars at various points. By bonding the rebars with the lightning protection system, the electrical charge from a lightning strike is efficiently conducted away from the building and harmlessly discharged into the ground. Moreover, additional precautions such as surge protection devices are frequently installed to further safeguard the rebars and the overall building from potential damage caused by voltage surges resulting from lightning strikes. These surge protection devices assist in minimizing the risk of electrical surges that could potentially compromise the integrity of the rebars. To conclude, steel rebars are shielded against lightning strikes by establishing a proper bond with a lightning protection system. This ensures that the electrical energy from a lightning strike is securely directed away from the building and grounded, thereby reducing the risk of damage to the rebars and the overall structural integrity.

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