HRB400 Deformed Steel Bar

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Loading Port:: China Main Port

Payment Terms:: TT or LC

Min Order Qty:: 25MT m.t.

Supply Capability:: 800000TONS/YEAR m.t./month

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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

Deformed Steel Bar in container

Deformed Steel Bar in factory

Note:

1. Our products are produced according to national standard (GB), if not, supply according to national standards (GB) or agreement as customer required.

2. Other Grade and Standard Deformed Steel Bar we can supply:

Grade: GR40/GR60, G460B/B500A/B500B/B500C,BST500S

Standard: ASTM, BS, DIN

The Minimum Order Quantity of these products is high, and need to be confirmed.

3. We can not only supply Deformed Steel Bar; if you need anything about building materials, please contact us for further information.

4. Please send us your detail specifications when inquire. We will reply to you as soon as possible. We sincerely hope we can establish a long stable business relationship.

Q:Can steel rebars be used in airport runway construction?: Yes, steel rebars can be used in airport runway construction. They are commonly used as reinforcement in concrete to provide strength and durability to the runway.

Q:Can steel rebars be used in residential foundation construction?: Yes, steel rebars can be used in residential foundation construction. Steel rebars are commonly used in reinforced concrete structures, including residential foundations, to enhance their strength and durability. The rebars are typically placed in a grid pattern throughout the foundation to provide reinforcement and prevent cracking or structural failure. They help to distribute the load of the building evenly and increase its resistance to various forces, such as soil pressure, wind, and seismic activity. Additionally, steel rebars are resistant to corrosion and can withstand extreme weather conditions, making them a reliable choice for residential foundation construction.

Q:How are steel rebars used in swimming pool construction?: Steel rebars are used in swimming pool construction to reinforce the concrete structure of the pool. The rebars provide strength and stability to the pool, preventing cracks and ensuring its durability. They are placed strategically within the pool's foundation and walls to provide structural support and help distribute the weight of the water.

Q:What are the guidelines for the proper spacing of steel rebars in columns?: Various national and international codes and standards, such as the American Concrete Institute (ACI) and the British Standards Institution (BSI), provide guidelines for the proper spacing of steel rebars in columns. These guidelines are crucial in ensuring the durability and structural integrity of reinforced concrete columns. The spacing of steel rebars in columns is primarily influenced by the following factors: 1. Concrete cover: Codes specify a minimum concrete cover to protect the steel reinforcement from corrosion and provide fire resistance. The spacing between rebars should maintain a uniform concrete cover around each rebar. 2. Rebar diameter: The size or diameter of rebars affects their spacing. Codes mandate a minimum clear spacing between adjacent rebars based on their diameter to prevent congestion and ensure proper concrete placement. 3. Column dimension: The size and shape of the column play a significant role in determining rebar spacing. Larger columns may require more rebars compared to smaller ones to provide sufficient reinforcement and resist applied loads. 4. Load and design requirements: Design loads, including dead loads, live loads, and seismic loads, impact rebar spacing. Codes provide guidelines on the minimum amount of reinforcement required based on column dimensions and anticipated loads. 5. Structural detailing: Proper detailing is crucial to ensure rebars are adequately anchored and lapped, developing the required bond strength. Codes provide guidelines for lapping lengths, anchorage lengths, and splices to ensure force transfer between rebars and concrete. Consulting the specific code or standard applicable in your region is crucial to determine the exact guidelines for rebar spacing in columns. It is also recommended to involve a qualified structural engineer or designer to perform detailed analysis and design of reinforced concrete columns, ensuring compliance with the appropriate guidelines and achieving a safe and efficient structural system.

Q:What are the common defects found in steel rebars?: There are several common defects that can be found in steel rebars. One common defect is surface cracks, which can occur during the manufacturing process or due to improper handling and storage. These cracks can compromise the strength and integrity of the rebars and may lead to failure under load. Another common defect is corrosion, which can occur when the rebars are exposed to moisture or chemicals. Corrosion can weaken the rebars and reduce their load-bearing capacity, making them more susceptible to failure. Bending and straightening defects are also frequently observed in steel rebars. Improper bending or straightening can lead to cracks, buckling, or uneven stress distribution, compromising the rebars' performance. Inadequate welding or improper lapping of rebars can result in poor connections and reduced structural integrity. Welding defects such as lack of fusion, incomplete penetration, or excessive porosity can weaken the rebars and increase the risk of failure. Dimensional defects, such as variations in diameter, length, or straightness, can affect the rebars' fit and compatibility with other structural components. If rebars are not properly aligned or do not meet the required dimensions, it can lead to reduced structural strength and compromised performance. Lastly, improper heat treatment during the manufacturing process can result in internal defects such as segregation, inclusions, or improper grain structure. These defects can weaken the rebars and make them more prone to fracture or failure under load. Overall, it is essential to carefully inspect steel rebars for these common defects to ensure the structural integrity and safety of the construction projects they are used in.

Q:How do steel rebars improve the ductility of concrete?: Concrete's ductility is enhanced by steel rebars in several ways. Firstly, the distribution and dissipation of stress throughout the concrete structure is facilitated by the presence of rebars. This prevents the concentration of loads in specific areas, thus preventing cracks or fractures and improving overall ductility. Secondly, when concrete undergoes tension or bending forces, rebars act as reinforcement to resist these forces. The tensile strength of steel rebars is higher compared to concrete, which is weak in tension. This reinforcement allows concrete to withstand higher tensile stresses without breaking, thereby increasing ductility. Furthermore, the bond between steel rebars and the concrete matrix plays a crucial role in improving ductility. The rough surface of rebars provides better adhesion with the surrounding concrete, increasing stress transfer between the two materials. This bond ensures that rebars do not slip out of the concrete during deformation, maintaining structural integrity and enhancing the ductility of the composite material. Additionally, the presence of steel rebars contributes to the post-cracking behavior of concrete. When cracks develop under high loads, rebars help hold the concrete together and prevent further crack propagation. This post-cracking behavior enables concrete to maintain its load-bearing capacity even in a damaged state, thereby improving overall ductility. In conclusion, steel rebars improve concrete's ductility by distributing stress, resisting tension and bending forces, enhancing the bond between concrete and rebars, and providing post-cracking reinforcement. These combined effects result in a more flexible and durable concrete structure capable of withstanding deformation without catastrophic failure.

Q:How do steel rebars resist shear forces in concrete structures?: Shear forces in concrete structures are counteracted and reinforced by steel rebars. These rebars play a crucial role in enhancing the concrete's strength and stability. They are strategically placed in areas where high shear forces are expected, such as beams, columns, and slabs. By forming a crisscross pattern, the rebars create a grid-like structure within the concrete. When shear forces act on the concrete, the rebars resist cracking and separation by transferring the load across the cracks. Acting as tension reinforcement, the rebars provide extra strength, preventing the concrete from failing. Additionally, they distribute the shear forces evenly, reducing stress concentration and increasing the overall structural integrity. The bond between the steel rebars and the concrete is vital for their effective resistance against shear forces. The rebars are designed with ridges or deformations on their surface to improve the bond strength. This bond ensures that the rebars and the concrete work together as a unified unit, facilitating the transfer of shear forces from the concrete to the rebars. To summarize, steel rebars reinforce concrete structures by strengthening and distributing shear forces more effectively. They prevent cracking and failure, enhance the structural integrity, and ensure overall stability.

Q:Can steel rebars be used in structures with limited foundation support?: Yes, steel rebars can be used in structures with limited foundation support. Steel rebars are commonly used as reinforcement in concrete structures to enhance their strength and durability. They can help distribute the load more evenly across the structure, which can be particularly beneficial in situations where there is limited foundation support. However, it is important to assess the specific circumstances and consult with a structural engineer to ensure that the design and placement of the rebars are appropriate for the given foundation conditions.

Q:How are steel rebars anchored into existing concrete?: Reinforcing existing concrete structures commonly involves the use of steel rebars. The process to anchor these rebars into the concrete consists of several steps. Firstly, preparation of the concrete surface is necessary. This typically includes cleaning the area where the rebar will be anchored in order to remove any dirt, debris, or loose concrete. Additionally, roughening the surface may be required to enhance adhesion. After the surface is prepared, a bonding agent such as epoxy or a cementitious grout is applied. This bonding agent facilitates a strong bond between the rebar and the concrete. Next, the steel rebar is positioned and inserted into the prepared area. The depth at which the rebar is inserted into the concrete depends on the required anchorage depth and design specifications. Alignment at the correct depth is essential, in accordance with the structural requirements. To ensure proper anchorage, it is often necessary to bend or hook the end of the rebar. This prevents the rebar from pulling out of the concrete under tension or external forces. Lastly, the bonding agent is left to cure as per the manufacturer's instructions. This allows it to harden and form a strong bond between the rebar and the concrete. It is important to note that the precise method of anchoring steel rebars into existing concrete may vary based on the specific application and design requirements. Additional reinforcement methods, such as mechanical anchors or post-installed anchors, may be utilized in certain cases to enhance anchorage strength. Expertise from professionals and adherence to engineering guidelines are crucial to ensure the proper and safe anchoring of steel rebars into existing concrete structures.

Q:What are the common lengths of steel rebars?: The common lengths of steel rebars typically range from 20 feet to 60 feet, with 40 feet being the most commonly used length.

EDBAR is a well-known company specialised in production and sales of steel product--billet, dformed bar and round bar.The annual production capacity is 1.5million mtons of round bar and 0.5 million mtons of deformed bars.

1. Manufacturer Overview
Location	Hebei, China
Year Established	2009
Annual Output Value	Above US$ 500 Million
Main Markets	Southeast Asia; East Asia; Middle east
Company Certifications	ISO 9001:2008

2. Manufacturer Certificates
a) Certification Name
Range
Reference
Validity Period

3. Manufacturer Capability
a)Trade Capacity
Nearest Port	Tianjin;
Export Percentage	40%-60%
No.of Employees in Trade Department	21-60 People
Language Spoken:	English; Chinese
b)Factory Information
Factory Size:	Above 850,000 square meters
No. of Production Lines	Above 5
Contract Manufacturing	OEM service offered
Product Price Range	high; average