Deformed Bar Hot Rolled High Quality BS4449

Deformed Bar Hot Rolled High Quality BS4449 System 1

Deformed Bar Hot Rolled High Quality BS4449

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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 Steel Rebars for Construction Concrete

Item specifice

Standard:

AISI,ASTM,EN,API,DIN,BS,JIS,GB

Technique:

Spring,EFW,Extruded,Saw,Forged,ERW,Cold Drawn,Cold Rolled,Hot Rolled

Shape:

LTZ,Oval,Rectangular,Round,Hexagonal,C Channel,Square,U Channel

Surface Treatment:

Polished,Chromed Passivation,Dry,Oiled,Color Coated,Copper Coated,Coated,Galvanized,PVDF Coated,Black,Bright

Steel Grade:

A53(A,B),20#,10#,SS400-SS490,600 Series,400 Series,300 Series,200 Series,HRB400,RHB335,Q235B,Q215B,Q235,Q215,Q195

Certification:

UL,API,CE,RoHS,IBR,BV,SGS,ISO,BSI

Thickness:

Length:

Net Weight:

Product Description:

OKorder is offering high quality Hot Rolled Steel I-Beams at great prices with worldwide shipping. Our supplier is a world-class manufacturer of steel, with our products utilized the world over. OKorder annually supplies products to European, North American and Asian markets. We provide quotations within 24 hours of receiving an inquiry and guarantee competitive prices.

Product Applications:

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 Advantages:

OKorder's Steel I-Beams are durable, strong, and resist corrosion, exact size, regular package, chemical and mechanical properties are stable.

Main Product Features:

· Premium quality

· Prompt delivery & seaworthy packing (30 days after receiving deposit)

· Corrosion resistance

· Can be recycled and reused

· Mill test certification

· Professional Service

· Competitive pricing

Product Specifications:

Manufacture: Hot rolled

Grade: BS4449

Certificates: ISO, SGS, BV, CIQ

Diameter: 6mm,8mm,10mm,12mm,14mm,16mm,18mm,20mm,

22mm,25mm,28mm,32mm,36mm,40mm,50mm

Length: 6M, 9M,12M or as required

Packaging: Export packing, nude packing, bundled

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

FAQ:

Q1: Why buy Materials & Equipment from OKorder.com?

A1: All products offered byOKorder.com are carefully selected from China's most reliable manufacturing enterprises. Through its ISO certifications, OKorder.com adheres to the highest standards and a commitment to supply chain safety and customer satisfaction.

Q2: How do we guarantee the quality of our products?

A2: We have established an advanced quality management system which conducts strict quality tests at every step, from raw materials to the final product. At the same time, we provide extensive follow-up service assurances as required.

Q3: How soon can we receive the product after purchase?

A3: Within three days of placing an order, we will begin production. The specific shipping date is dependent upon international and government factors, but is typically 7 to 10 workdays.

Deformed Bar Hot Rolled High Quality BS4449

Q:What is the difference between hot-rolled and cold-worked steel rebars?: The main difference between hot-rolled and cold-worked steel rebars lies in the manufacturing process. Hot-rolled steel rebars are produced by heating the steel billets to high temperatures and then passing them through rolling mills to create the desired shape and size. This process results in a rougher surface and higher yield strength compared to cold-worked steel rebars. On the other hand, cold-worked steel rebars are made by subjecting the hot-rolled steel bars to additional processing steps, such as cold drawing or cold rolling. This process enhances the mechanical properties of the steel, including improved tensile strength, dimensional accuracy, and a smoother surface finish. In summary, hot-rolled steel rebars are formed through high-temperature rolling, while cold-worked steel rebars undergo additional steps to further refine their properties, resulting in a smoother surface and improved mechanical strength.

Q:How do steel rebars contribute to the overall sustainability of the construction industry?: The construction industry benefits from steel rebars in several ways, which contribute to its overall sustainability. To begin with, the utilization of steel rebars improves the strength and longevity of concrete structures. This leads to reduced repair and replacement needs, resulting in less construction waste and a smaller environmental impact. Furthermore, steel rebars can be recycled and repurposed at the end of their life cycle. This not only decreases the demand for new steel production but also reduces energy consumption and greenhouse gas emissions associated with manufacturing. By embracing the circular economy, steel rebars help conserve natural resources and decrease the construction industry's carbon footprint. Moreover, incorporating steel rebars into concrete structures enhances their ability to withstand seismic activity and extreme weather conditions like hurricanes or earthquakes. This ensures the safety of occupants and minimizes the risk of infrastructure damage, thereby reducing the need for reconstruction and increasing overall resilience. Additionally, steel rebars can be engineered to optimize material usage and decrease the weight of structures. This leads to more efficient transportation and installation processes, resulting in lower fuel consumption and emissions related to transportation. Lastly, steel rebars offer flexibility in design and construction, enabling innovative and sustainable building solutions. They can easily be integrated into various construction methods, allowing for the use of sustainable techniques such as prefabrication or modular construction. This improves efficiency, reduces construction time, and minimizes disruption to the surrounding environment. In conclusion, steel rebars are essential for the sustainability of the construction industry. They enhance structure durability, promote recycling, reduce waste generation, conserve resources, improve safety, and enable innovative construction techniques. Their use contributes to the overall environmental, social, and economic sustainability of the industry, making them a vital component in sustainable construction practices.

Q:How are steel rebars used in the construction of tunnels and underground passages?: Steel rebars are used in the construction of tunnels and underground passages to reinforce the concrete structures. They are embedded within the concrete to increase its strength and prevent cracking or collapsing under the pressure exerted by the surrounding soil or water. The rebars provide structural integrity and durability, ensuring the tunnels and passages can withstand the forces and stresses they encounter.

Q:What is the effect of steel rebars on the electrical conductivity of concrete?: Steel rebars have a significant effect on the electrical conductivity of concrete. As steel is a highly conductive material, the presence of steel rebars in concrete increases its overall electrical conductivity. This is due to the fact that steel rebars create a network of conductive paths throughout the concrete matrix, allowing for the easy flow of electrical current. The electrical conductivity of concrete is an important factor to consider, especially in applications where electrical grounding or conductivity is necessary. Steel rebars aid in providing a low-resistance pathway for electrical current, improving the overall electrical conductivity of the concrete structure. However, it is essential to note that the presence of steel rebars can also introduce potential challenges in certain scenarios. For instance, in electrical installations where insulation is required or in areas where electrical isolation is necessary, the conductivity provided by steel rebars may not be desired. In such cases, additional measures like insulation or isolation techniques need to be employed to prevent unwanted electrical currents from flowing through the concrete. Overall, the effect of steel rebars on the electrical conductivity of concrete is dependent on the specific requirements and applications of the concrete structure. Understanding the intended use and implementing appropriate measures accordingly will ensure that the electrical conductivity of the concrete meets the desired specifications.

Q:Can steel rebars be used in structures with high moisture content in the environment?: Structures in high-moisture environments can utilize steel rebars, but precautions must be taken to avoid corrosion. The corrosion process of steel is accelerated by moisture, which can lead to long-term structural problems. To reduce this risk, various measures can be taken. One option is to consider using corrosion-resistant steel rebars, such as stainless steel rebars. These rebars are specifically designed to withstand corrosion in high-moisture environments, making them suitable for structures exposed to moisture. Another important measure is maintaining an adequate thickness of concrete cover to protect the rebars from direct contact with moisture. Sufficient concrete cover acts as a barrier, preventing moisture from reaching the steel surface and minimizing the risk of corrosion. Additionally, the application of waterproofing materials and coatings can effectively prevent moisture from entering the structure. These materials create a protective layer on the concrete surface, preventing water penetration and reducing the likelihood of corrosion. Regular inspections and maintenance are crucial for structures in high-moisture environments. Periodic inspections can help identify early signs of corrosion or damage, enabling timely repairs or preventive actions. In conclusion, while steel rebars can be used in structures with high moisture content, it is essential to implement appropriate measures to prevent corrosion. The use of corrosion-resistant rebars, maintaining proper concrete cover, and applying waterproofing materials can greatly enhance the durability and longevity of such structures.

Q:How do steel rebars affect the overall structural integrity of a building?: The overall structural integrity of a building is greatly enhanced by steel rebars. These rebars provide reinforcement and strength to the concrete, making it more durable and resistant to external forces. To begin with, the role of steel rebars in reinforced concrete structures is that of tension members. While concrete itself is strong in compression, it lacks strength in tension. By embedding steel rebars within the concrete, the composite material becomes capable of withstanding tensile forces without cracking or failing. This ensures that the building can endure the tensile stresses caused by factors like wind load, seismic activity, and ground settlement. Additionally, steel rebars aid in the even distribution and dissipation of loads throughout the structure. They enhance the load-bearing capacity of the concrete, enabling it to withstand heavier loads and prevent crack formation. Moreover, the rebars help control the spread of cracks resulting from shrinkage or thermal expansion, thereby averting catastrophic failure. Moreover, the inclusion of steel rebars enhances the ductility of the reinforced concrete structure. Ductility refers to a material's ability to deform under stress before breaking. By incorporating steel rebars, the concrete gains the capacity to bend and stretch without losing its strength. This is particularly crucial in earthquake-prone areas, as the building can absorb and dissipate the energy generated by seismic forces. Furthermore, steel rebars contribute to the durability and longevity of the building. They safeguard the concrete by preventing corrosion and degradation. When properly coated and installed, rebars act as a barrier against moisture and other corrosive elements, thereby preserving the building's structural integrity over time. In conclusion, the impact of steel rebars on the overall structural integrity of a building is significant. They reinforce the concrete, enhance its load-bearing capacity, improve ductility, and increase durability. Incorporating steel rebars into construction ensures that the building can withstand various external forces and maintain its stability and safety for an extended period.

Q:Why the longitudinal tie bar adopts screw steel bar, and the transverse transmission bar adopts light round steel bar.: Fine grain hot-rolled steel grades in the hot rolled ribbed bar with English abbreviation "fine" English (Fine) first letter. Such as: HRBF335, HRBF400, HRBF500. There are higher requirements for the seismic structure, the applicable brand is: after the existing brand plus E (such as: HRB400E, HRBF400E).

Q:What are the different types of steel rebars used in marine construction?: In marine construction projects, various types of steel rebars are utilized to withstand the harsh conditions and corrosive environments commonly found in marine structures. 1. Stainless Steel Rebars: These rebars, containing chromium and nickel, are crafted from high-grade stainless steel. They exhibit exceptional resistance to corrosion, making them ideal for marine construction projects where exposure to saltwater and other corrosive elements is anticipated. Though more expensive, stainless steel rebars offer superior durability and longevity. 2. Epoxy-Coated Rebars: Carbon steel rebars are coated with an epoxy layer, acting as a protective barrier against corrosive elements and reducing the risk of rust and corrosion. These rebars are commonly employed in marine construction projects with high saltwater exposure. 3. Galvanized Rebars: By subjecting carbon steel rebars to a hot-dip galvanization process, a layer of zinc is applied, providing excellent corrosion resistance. Galvanized rebars are frequently used in marine construction projects susceptible to seawater or salt spray exposure. 4. Fiberglass Rebars: Composed of high-strength glass fibers embedded in a polymer matrix, fiberglass rebars offer excellent corrosion resistance unaffected by saltwater or other corrosive elements. These rebars are lightweight, non-magnetic, and possess high tensile strength, making them suitable for marine construction projects. 5. Carbon Steel Rebars: Carbon steel rebars are the most commonly used rebars in construction, including marine projects. Although not inherently corrosion-resistant, they can be treated with protective coatings, such as epoxy or galvanization, to enhance their durability and resistance to corrosive environments. It is crucial to consider the specific requirements and conditions of a marine construction project when selecting the appropriate type of steel rebars. Factors such as saltwater exposure, humidity, and anticipated lifespan of the structure should be taken into account to ensure its longevity and safety.

Q:How do steel rebars enhance the bond between concrete and reinforcement?: Steel rebars enhance the bond between concrete and reinforcement through various mechanisms. Firstly, the presence of rebars in concrete increases the mechanical interlock between the two materials. As concrete is poured around the rebars, it fills the gaps between the steel bars, creating a strong bond when it hardens. This mechanical interlock helps to prevent the separation of concrete and reinforcement, especially under tensile loads. Secondly, steel rebars enhance the bond by providing additional surface area for adhesion. The rough texture of the rebars allows the concrete to grip onto the steel surface, creating a stronger bond. This adhesion is further improved by the corrosion products that form on the surface of the steel rebars over time. These products create a rougher surface, increasing the bond strength between the concrete and reinforcement. Thirdly, rebars act as load transfer devices in concrete structures. When external forces are applied to the structure, the rebars distribute and transfer these forces to the surrounding concrete. This load transfer mechanism helps to improve the overall structural integrity and performance of the concrete element. Additionally, steel rebars also enhance the bond between concrete and reinforcement through their ability to resist deformation. Under tensile loads, the rebars elongate and absorb the stress, preventing the concrete from cracking. This prevents the development of cracks that could weaken the bond between the two materials. In summary, steel rebars enhance the bond between concrete and reinforcement by providing mechanical interlock, increased surface area for adhesion, load transfer capabilities, and resistance to deformation. These factors collectively contribute to the overall strength, durability, and performance of reinforced concrete structures.

Q:What is the length and size of thread steel?: China's standard recommended nominal diameter of 6, 8, 10, 12, 16, 20, 25, 32, 40, 50mm thread steel series.China's export screw length selection range is 6 ~ 12m.The selection length of Japanese thread steel is 3.5 ~ 10m.

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