Hot rolled deformed bar BS4449 G460B HRB400

Hot rolled deformed bar BS4449 G460B HRB400 System 1

Hot rolled deformed bar BS4449 G460B HRB400

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 25 m.t.

Supply Capability:: 20000000 m.t./month

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Deformed Bar Details:

Minimum Order Quantity:	m.t.	Unit:	m.t.	Loading Port:
Supply Ability:	m.t./month	Payment Terms:	TT OR LC	Package:	wire rod packing

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

Q: How do steel rebars contribute to the structural soundness of a building?: The construction industry heavily relies on steel rebars to ensure the structural integrity of buildings. These reinforcing bars, commonly referred to as rebars, are composed of steel and embedded within concrete to provide additional strength and reinforcement. One of the main ways in which steel rebars contribute to a building's structural soundness is by bolstering its tensile strength. Concrete is excellent at handling compressive forces but lacks strength when it comes to tension. Buildings are subjected to various loads, including wind, earthquakes, and their own weight, which exert both compressive and tensile forces. By incorporating steel rebars into the concrete, the overall structure's tensile strength is significantly improved. This prevents the concrete from cracking or failing under tension, guaranteeing the stability and durability of the building over time. Additionally, steel rebars enhance a building's ductility, which refers to its ability to deform under stress without breaking. Concrete, being a brittle material, lacks ductility and tends to fail suddenly when subjected to excessive stress. With the inclusion of steel rebars, the concrete-reinforced structure gains the capacity to absorb and distribute energy, allowing it to undergo controlled deformations without abrupt failure. This increased ductility ensures that the building can withstand dynamic loads, such as those generated during an earthquake, and reduces the risk of catastrophic collapse. In addition to improving tensile strength and ductility, steel rebars also contribute to the overall stability and load-bearing capacity of a building. By evenly distributing the load across the structure, they help minimize the concentration of stress in specific areas, thus preventing potential weak points or failure spots. This distributed load-bearing capacity ensures that the building can support its intended weight and endure the forces acting upon it. Furthermore, steel rebars play a crucial role in extending the lifespan of a building by offering protection against corrosion. Steel is prone to rust when exposed to moisture and air, which can compromise its structural integrity. However, rebars are often coated with epoxy or other anti-corrosion materials to prevent rusting. This protective layer ensures that the steel remains intact and maintains its strength over time, further bolstering the structural soundness of the building. To summarize, steel rebars are essential components in guaranteeing the structural soundness of buildings. They enhance concrete's tensile strength, improve its ductility, increase load-bearing capacity, and safeguard against corrosion. By incorporating steel rebars, buildings can withstand various loads, resist cracking, and ensure long-term stability and durability.

Q: 4E DG 164 is a steel grade 3 steel, DG steel, E is what mean: 4 means HRB400, that is, hardness.E stands for seismic reinforcement.DG is da-gang.16 is the diameter 16mm.

Q: What are the guidelines for proper bending of steel rebars on construction sites?: To guarantee the structural integrity and safety of buildings, it is crucial to adhere to guidelines for bending steel rebars on construction sites. The following are key guidelines that should be followed: 1. Utilize appropriate tools: Make use of a specialized rebar bending machine or manual rebar bender designed specifically for steel rebars. These tools enable precise bending without causing any damage or weak points on the rebar. 2. Accurately determine the required bend angle: Before bending, accurately measure and mark the desired bend angle on the rebar. Use either a protractor or a bending template to achieve the angle you desire. 3. Adhere to the bending radius: The bending radius refers to the minimum radius at which the rebar can be bent without sustaining any damage. Always follow the recommended bending radius provided by the manufacturer or structural engineer to prevent fractures or deformations. 4. Secure the rebar firmly: Before bending, ensure that the rebar is securely fastened in the bender to prevent any slipping or movement during the bending process. This guarantees precise bending and reduces the risk of accidents. 5. Employ a gradual bending process: When bending the rebar, apply gradual pressure and avoid sudden or excessive force. This gradual bending approach minimizes the risk of cracks or fractures and preserves the rebar's structural integrity. 6. Conduct a thorough inspection of the bend: After bending, carefully examine the rebar to ensure that it matches the desired angle and displays no visible defects or stress marks. Any faulty bends should be rectified immediately. 7. Proper storage practices: Store the bent rebar in a designated area, preferably on a flat surface, to prevent any distortion or damage. Avoid placing heavy objects on top of the bent rebar to maintain its shape and strength. 8. Observe safety precautions: Always wear appropriate personal protective equipment (PPE), such as gloves and safety glasses, while performing bending operations. Ensure that the work area is free of obstacles and other workers to prevent accidents. 9. Maintain proper documentation: Document the bending process, including the angle, radius, and any deviations or issues that arise. This information can be valuable for quality control purposes and future reference. 10. Comply with building codes: Ensure that the bending process aligns with local building codes and regulations. Seek guidance from a structural engineer or relevant authorities if necessary. By adhering to these guidelines, construction professionals can ensure the proper bending of steel rebars, resulting in a building that is structurally sound and safe.

Q: How do steel rebars affect the overall crack width of concrete structures?: Steel rebars can significantly reduce the overall crack width of concrete structures. By reinforcing the concrete, rebars help distribute and resist tensile forces, preventing cracks from widening or forming in the first place. This reinforcement enhances the structural integrity and durability of the concrete, ensuring it can withstand external loads and environmental factors.

Q: How do steel rebars resist alkali-silica reaction in concrete?: Steel rebars resist alkali-silica reaction in concrete by serving as a barrier that prevents direct contact between the alkalis present in the concrete and the reactive silica aggregates. The protective oxide layer formed on the surface of the rebars acts as a physical and chemical barrier, preventing the alkalis from penetrating and reacting with the aggregates. Additionally, the high pH environment created by the concrete also helps in passivating the steel rebars, further enhancing their resistance to alkali-silica reaction.

Q: Are there any health and safety concerns associated with steel rebars?: Yes, there are potential health and safety concerns associated with steel rebars. Some of the common concerns include the risk of physical injury due to improper handling, lifting, or installation of the rebars. Additionally, steel rebars can cause musculoskeletal disorders if workers are exposed to repetitive tasks or awkward postures during their installation. Moreover, steel rebars may contain hazardous materials such as lead or other toxic substances, which can pose health risks if workers are exposed to them through inhalation or direct contact. Therefore, it is important to follow proper safety protocols and use appropriate personal protective equipment when working with steel rebars to minimize these potential health and safety concerns.

Q: What are the different types of steel rebars used in marine construction?: The different types of steel rebars used in marine construction include epoxy-coated rebars, stainless steel rebars, and galvanized rebars. Epoxy-coated rebars are commonly used in marine environments due to their corrosion resistance properties. Stainless steel rebars are also used for their excellent corrosion resistance and strength. Galvanized rebars, which are coated with a layer of zinc, are another option for marine construction as they provide good protection against corrosion.

Q: Can steel rebars be used in water treatment facilities?: Yes, steel rebars can be used in water treatment facilities. Steel rebars, or reinforcing bars, are commonly used in construction projects to strengthen concrete structures. In water treatment facilities, where concrete is used for various structures such as tanks, basins, and pipelines, steel rebars are often incorporated to provide added strength and durability. Water treatment facilities involve the treatment of water to make it safe for consumption or other purposes. Concrete is a preferred material in these facilities due to its ability to withstand the harsh conditions of water treatment processes, such as exposure to chemicals, high temperatures, and pressure. Steel rebars are essential in reinforcing the concrete structures to ensure they can withstand these demanding conditions. The corrosion resistance of steel rebars is a critical factor to consider when using them in water treatment facilities. Since water treatment facilities often involve the use of chemicals and exposure to moisture, it is important to choose rebars that have appropriate corrosion protection. This can be achieved by using stainless steel rebars or by applying protective coatings to the rebars. It is also worth noting that proper design, construction, and maintenance practices are essential in ensuring the long-term performance of steel rebars in water treatment facilities. Adequate cover thickness, concrete quality, and proper installation techniques are important considerations to prevent corrosion and ensure the rebars provide the desired structural integrity. In conclusion, steel rebars can be effectively used in water treatment facilities to reinforce concrete structures and provide the necessary strength and durability. However, it is important to choose corrosion-resistant rebars and adhere to proper design and construction practices to ensure their long-term performance in these facilities.

Q: Are there any environmental concerns associated with steel rebar production?: Yes, there are several environmental concerns associated with steel rebar production. Firstly, the extraction and processing of iron ore, which is used to produce steel, can lead to deforestation, habitat destruction, and soil erosion. Additionally, the production process emits significant amounts of greenhouse gases, contributing to climate change. Steel rebar production also requires large amounts of water, leading to potential water scarcity issues. Furthermore, the disposal of waste materials and byproducts from steel production can contaminate soil and water bodies, posing risks to ecosystems and human health. Therefore, it is important to consider and address these environmental concerns in the steel rebar production process.

Q: Can steel rebars be used in cold storage construction?: Cold storage construction can utilize steel rebars. These rebars are extensively employed in construction for their strength and durability. In the context of cold storage construction, where low temperatures are maintained, steel rebars offer multiple benefits. To begin with, steel rebars possess remarkable thermal conductivity, enabling them to quickly adapt to the low temperatures inside the cold storage facility. This facilitates the maintenance of a consistent temperature throughout the structure, preventing any potential issues of expansion or contraction. Moreover, steel rebars have a high tensile strength, making them suitable for withstanding heavy loads and providing structural stability in cold storage construction. Given that the cold storage facility often requires a robust framework to support the weight of stored products and equipment, this strength is crucial. Additionally, steel rebars exhibit corrosion resistance, which is particularly vital in cold storage environments. The combination of low temperatures and high humidity levels can create an environment favorable to corrosion. However, steel rebars are typically coated with epoxy or galvanized to shield them from moisture and prevent rusting. Lastly, steel rebars are easily obtainable and cost-effective, making them a practical choice for cold storage construction projects. They can be readily sourced and fabricated to meet specific design requirements, ensuring that the structure can withstand the unique challenges of a cold storage environment. In conclusion, steel rebars can effectively be utilized in cold storage construction due to their thermal conductivity, high tensile strength, corrosion resistance, and availability. They provide the necessary structural support and durability required for the construction of cold storage facilities.

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