ASTM deformed steel bar for construction

ASTM deformed steel bar for construction System 1

ASTM deformed steel bar for construction System 2

ASTM deformed steel bar for construction

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 25 m.t.

Supply Capability:: 10000 m.t./month

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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

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.

ASTM deformed steel bar for construction

Q:How do steel rebars affect the flexibility of a concrete structure?: The flexibility of a concrete structure can be greatly influenced by steel rebars. These rebars, which are essentially steel bars inserted into the concrete to provide reinforcement, improve the strength and durability of the structure. By increasing the tensile strength of the concrete, the presence of rebars makes it more resistant to cracking and bending when subjected to external loads. Steel rebars help to prevent localized stress concentrations by distributing the load evenly throughout the entire structure. This is particularly important in areas like beams or columns, where a significant amount of weight or pressure can be concentrated. Acting as a support system, the rebars effectively transfer the load to different parts of the structure, ensuring that the concrete can withstand the applied forces without failing. Furthermore, steel rebars offer flexibility to the concrete structure by allowing for controlled cracking. Concrete is a brittle material that tends to crack under tensile stress. However, the presence of rebars helps to control and limit the size and extent of cracks that may occur. By absorbing some of the tensile forces, the rebars distribute the stress and prevent the formation of large cracks. This enhances the overall flexibility of the structure, as controlled cracking permits slight movements and deformation without compromising the structural integrity. In conclusion, steel rebars play a vital role in improving the flexibility of a concrete structure. They reinforce the concrete and increase its tensile strength, thereby preventing cracking and bending under external loads. Moreover, the rebars enable controlled cracking, which aids in stress distribution and the maintenance of the concrete's structural integrity.

Q:Can steel rebars be used in the construction of industrial facilities?: Yes, steel rebars can be used in the construction of industrial facilities. Steel rebars provide strength and reinforcement to concrete structures, making them suitable for heavy-duty applications in industrial settings. These rebars are commonly used in the construction of industrial buildings, warehouses, factories, power plants, and other similar facilities to ensure the structural integrity and durability of the infrastructure.

Q:How do steel rebars affect the constructability of a project?: Steel rebars play a crucial role in enhancing the constructability of a project in several ways. Firstly, they provide structural strength and stability to reinforced concrete structures. By reinforcing the concrete, rebars help to distribute the load more evenly, increasing the overall strength and durability of the project. Secondly, steel rebars allow for the construction of larger and taller structures. They provide the necessary tensile strength to counteract the concrete's weakness in resisting tension forces. This enables engineers and architects to design and build structures with greater flexibility, leading to more innovative and impressive architectural designs. Moreover, steel rebars help to ensure the integrity and safety of a project. They act as a reinforcement against external forces such as earthquakes, wind loads, and impacts. By resisting these forces, they enhance the structural stability, reducing the risk of collapse or damage during extreme conditions. Steel rebars also contribute to the longevity and maintenance of the project. Due to their high tensile strength and resistance to corrosion, they help extend the lifespan of the structure. This reduces the need for frequent repairs and replacements, resulting in cost savings and less disruption to the project. Furthermore, the use of steel rebars simplifies the construction process. They can be easily cut, bent, and shaped to fit the required specifications, making them highly adaptable to various project requirements. This flexibility allows for efficient construction, reducing the time and effort required for implementation. Overall, steel rebars significantly impact the constructability of a project by providing strength, stability, flexibility, safety, longevity, and simplification. Their use enables the construction of robust and aesthetically pleasing structures, ensuring the success and sustainability of the project.

Q:Can steel rebars be used in the construction of residential communities?: Yes, steel rebars can be used in the construction of residential communities. Steel rebars provide strength and durability to reinforced concrete structures, making them suitable for a wide range of construction projects, including residential buildings. The use of steel rebars helps ensure the structural integrity and longevity of the buildings, making them a reliable choice for residential communities.

Q:What is the role of steel rebars in preventing structural deformation?: Steel rebars play a crucial role in preventing structural deformation in various construction projects, including buildings, bridges, and other infrastructure. These reinforced bars are embedded in concrete to enhance its tensile strength, as concrete alone is strong in compression but weak in tension. The primary function of steel rebars is to resist tensile forces that can cause structural deformation. When a structure is subjected to external loads or forces, such as gravity or wind, it experiences both compressive and tensile stresses. While concrete can effectively handle compressive forces, it tends to crack and fail under tensile stress. By incorporating steel rebars within the concrete, the overall strength and load-bearing capacity of the structure are significantly improved. The rebars act as tension members and absorb the tensile forces, preventing the concrete from cracking and maintaining its integrity. This reinforcement helps distribute the forces more uniformly throughout the structure, reducing the risk of localized failures or deformations. Furthermore, rebars also help control and limit the propagation of cracks that may occur due to various factors like shrinkage, temperature fluctuations, or seismic events. The steel bars bridge and hold together any cracks that may develop in the concrete, preventing them from widening or compromising the structure's stability. Steel rebars also enhance the ductility of the reinforced concrete structure. Ductility refers to the ability of a material to deform under stress before reaching its breaking point. The presence of rebars allows the structure to undergo controlled deformation, which is crucial during extreme events like earthquakes or excessive loading. The rebars provide the necessary strength and flexibility to absorb and dissipate energy, thereby reducing the chances of catastrophic failure. In summary, the role of steel rebars in preventing structural deformation is to reinforce the concrete, enhance its tensile strength, control crack propagation, and improve the overall structural integrity. By withstanding tensile forces and enhancing the ductility of the structure, rebars play a vital role in ensuring the safety and longevity of various construction projects.

Q:What are the different methods of joining steel rebars?: There is a range of methods available for joining steel rebars, each with its own set of advantages and disadvantages. Here, we present the most common techniques: 1. Lap Splicing: The most widely used method for joining rebars is lap splicing. It entails overlapping two rebars and securing them together with wire or metal ties. This approach is cost-effective and straightforward, but it necessitates longer lap lengths to achieve the required strength. 2. Mechanical Splicing: Mechanical splicing involves connecting rebars using mechanical couplers or splices. These couplers are specifically designed to establish a strong and dependable connection between the rebars. Mechanical splicing enables quicker installation and reduces the need for lengthy overlaps. However, it may be more costly compared to lap splicing. 3. Welding: Another option for joining steel rebars is welding. This process involves heating the rebars and fusing them together using electric arcs or gas flames. Welding creates a robust and permanent connection, but it requires skilled labor and specialized equipment. It is commonly employed in precast concrete applications. 4. Bolted Connections: Bolted connections utilize bolts and nuts to join the rebars. This method offers a flexible and adjustable connection, making it suitable for certain applications. However, bolted connections necessitate additional hardware and may not be as strong as other methods. 5. Adhesive Bonding: Adhesive bonding involves using epoxy or other adhesives to join rebars. The adhesive is applied to the rebars, and they are pressed together until the adhesive cures and forms a strong bond. Adhesive bonding provides a clean and aesthetically pleasing finish, but it may not offer the same level of strength as other methods and is more suitable for non-structural applications. It is essential to consider factors such as specific project requirements, structural design, and construction techniques when selecting a joining method. Consulting with structural engineers and adhering to industry standards and codes is crucial to ensure the appropriate selection and implementation of the joining method for steel rebars.

Q:What is the role of steel rebars in the construction of power transmission towers?: Steel rebars play a crucial role in the construction of power transmission towers as they provide strength, durability, and structural stability. They are used to reinforce the concrete foundations and structural components of the towers, ensuring that they can withstand the weight, wind loads, and other environmental factors. This reinforcement helps prevent cracks, bending, and collapse, thus ensuring the safety and longevity of the power transmission towers.

Q:What is the length and size of thread steel?: Domestic sales of domestic thread steel, if the contract does not specify requirements, usually fixed length of 9m, 12m two length.

Q:How do steel rebars improve the load-carrying capacity of concrete?: Steel rebars improve the load-carrying capacity of concrete through a combination of reinforcement and strength enhancement. When steel rebars are embedded within the concrete, they provide tensile strength to a material that is otherwise weak in tension. This is because concrete is strong in compression but relatively weak in tension. The rebars act as a support system within the concrete, distributing the load more evenly and preventing cracks or failure. When a load is applied to the concrete, the rebars resist the tensile forces and help to hold the concrete together, increasing its ability to carry and distribute the load. Furthermore, steel rebars also enhance the ductility of concrete. Ductility refers to the ability of a material to deform without fracturing. By adding steel rebars, the concrete becomes more flexible and capable of withstanding greater stress and strain without failure. This is particularly important in structures subject to earthquakes, as the ability to absorb and dissipate energy is crucial for their overall integrity. In summary, steel rebars improve the load-carrying capacity of concrete by reinforcing it with tensile strength, distributing the load more evenly, preventing cracks, and enhancing its overall ductility. This combination of reinforcement and strength enhancement significantly increases the structural stability and durability of concrete structures.

Q:How are steel rebars classified based on their shape?: There are several types of steel rebars that are classified according to their shape. The most commonly used ones include plain round bars, deformed bars, square bars, and ribbed bars. Plain round bars are the simplest and most frequently utilized type. They have a smooth and round surface without any deformations or ribs. These bars are typically employed in cases where minimal reinforcement is needed for the concrete structure. Deformed bars, on the other hand, have ribs or deformations along their length. These ribs enhance the bond between the steel and the concrete, thereby improving structural integrity and preventing slippage. Deformed bars can be further classified based on the pattern and profile of the ribs, such as deformed high yield bars, twisted bars, and TMT (Thermo-Mechanically Treated) bars. Square bars, as their name suggests, have a square cross-section. They are mainly used in situations where additional strength and rigidity are required. Square rebars distribute loads better and are commonly utilized in building foundations, columns, and beams. Ribbed bars, also known as deformed square bars, have a square cross-section with ribs or deformations along their length. These ribs enhance the bond between the steel and the concrete, thereby providing better resistance against shear forces and improving overall structural strength. Ribbed bars are frequently used in reinforced concrete structures, such as bridges, highways, and buildings. To summarize, steel rebars are classified based on their shape into plain round bars, deformed bars, square bars, and ribbed bars. Each type of rebar offers distinct characteristics and is chosen based on the specific requirements and load-bearing capacity of the concrete structure.

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