EN STANDARD HIGH QUALITY HOT ROLLED REBAR

EN STANDARD HIGH QUALITY HOT ROLLED REBAR

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 50 m.t.

Supply Capability:: 100000 m.t./month

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Product Description:

Appearance: Black

Technique: Slitting hot rolled steel coil

Grade: Q235, Q195,A36 SS400 S235jr.St37-2

Standard: AISI,GB,DIN,ASTM,EN,JIS

Length: 6m, 9m, 12m or as your requirement.

Width: 10mm-1010mm

Thickness: 1.5mm-20mm

Business type: big manufacture

Place of origin: Tianjin China (Mainland)

Packaging Details: In bundles for exporting and sea worthy

Delivery Detail: Within 15-35 days after receiving L/C or deposite T/T

EN STANDARD HIGH QUALITY HOT ROLLED REBAR

General specification as below:

Flat Bar Specification
Width (mm)	Thickness (mm)	Length (m)	Theoretical Weight (kg/m)
20	2.0	6/9/12	0.31
20	2.5	6/9/12	0.39
20	2.75	6/9/12	0.43
25	2.5	6/9/12	0.49
25	3.75	6/9/12	0.74
30	2.5	6/9/12	0.59
30	3.5	6/9/12	0.82
30	9.75	6/9/12	2.30
40	3.5	6/9/12	1.10
40	4.75	6/9/12	1.50
40	11.75	6/9/12	3.69
50	2.75	6/9/12	1.08
50	4.5	6/9/12	1.77
50	9.75	6/9/12	3.83
60	5.5	6/9/12	2.60
60	7.5	6/9/12	3.53
60	11.5	6/9/12	5.42
80	5.5	6/9/12	3.45
80	7.5	6/9/12	4.71
80	11.75	6/9/12	7.38
100	3.25	6/9/12	2.55
100	4.75	6/9/12	3.73
100	7.5	6/9/12	5.89
120	9.75	6/9/12	9.18
120	11.75	6/9/12	11.07
150	9.75	6/9/12	11.48
150	11.5	6/9/12	13.54
150	13.5	6/9/12	15.90
160	11.75	6/9/12	14.76
200	9.5	6/9/12	14.92
250	5.75	6/9/12	11.28
340	7.75	6/9/12	20.68

Products Advantages

1. high quality competitive price and Accurate in size

2. high dimensional accuracy

3. Guaranteed raw material

4.high utilization rate of material

5.convenient in construction, saving much time and labor

6. high mechanical strength

Application: Widely used for construction, Ship building, Machinery manufacturing ,steel structure,agriculture and steel grating.

Q: How are steel rebars used in the construction of airports?: Steel rebars are extensively used in the construction of airports to provide structural reinforcement and ensure the overall strength and stability of various concrete structures. Rebars, also known as reinforcing bars, are typically made of steel and are strategically placed within concrete elements such as beams, columns, slabs, and foundations. In airport construction, rebars are primarily used to reinforce the concrete in runways, taxiways, and aprons. Runways, being subjected to heavy loads and constant aircraft movements, require significant reinforcement to withstand the immense pressure and prevent cracking or structural failure. Steel rebars are embedded within the concrete to enhance its tensile strength, allowing it to bear these heavy loads without compromising the integrity of the runway. Similarly, taxiways and aprons, which accommodate aircraft taxiing, parking, and refueling, also rely on steel rebars for reinforcement. These areas experience continuous vehicle and equipment traffic, making them susceptible to wear and tear. Incorporating rebars in the concrete ensures that these surfaces can withstand the constant stress and weight of aircraft and vehicles, ensuring durability and longevity. In addition to runways, taxiways, and aprons, steel rebars are also used in the construction of other airport structures such as terminal buildings, control towers, hangars, and parking facilities. These structures require strong foundations and sturdy frames to support the weight of the building and withstand various environmental factors such as wind and seismic forces. Steel rebars are employed in these structures to reinforce the concrete foundations, columns, and beams, providing the necessary strength and stability. Overall, steel rebars play a crucial role in the construction of airports by enhancing the structural integrity and durability of various concrete elements. They ensure that airport facilities can withstand the heavy loads, constant traffic, and adverse weather conditions associated with air travel, ensuring the safety and efficiency of airport operations.

Q: What are the maintenance requirements for steel rebars in a structure?: The maintenance requirements for steel rebars in a structure typically involve regular inspections, cleaning, and protection against corrosion. Inspections should be conducted to identify any signs of rust, cracks, or other damage that could compromise the strength of the rebars. Cleaning is essential to remove any dirt, debris, or chemicals that may accumulate on the rebars and accelerate corrosion. Applying protective coatings or coatings that inhibit corrosion can help extend the lifespan of the rebars. Additionally, ensuring proper drainage and preventing moisture buildup in the structure can also contribute to the maintenance of steel rebars.

Q: Are there any restrictions on the use of steel rebars in certain regions?: Yes, there are certain restrictions on the use of steel rebars in certain regions. These restrictions can vary from region to region and are typically put in place to ensure the safety and integrity of structures. In some areas, building codes and regulations may dictate specific requirements for the use of steel rebars, such as the type, size, and placement of rebars. Additionally, there may be restrictions on the use of certain types of steel rebars, such as epoxy-coated rebars, due to environmental concerns. It is important for construction professionals to familiarize themselves with the local building codes and regulations to ensure compliance and promote the safety and durability of structures.

Q: Can steel rebars be used in offshore oil and gas platforms?: Yes, steel rebars can be used in offshore oil and gas platforms. Steel rebars are commonly used in construction projects to reinforce concrete structures, and offshore platforms are no exception. These platforms are subjected to various environmental and operational factors such as wave loads, wind forces, and seismic activities. The use of steel rebars helps to strengthen the structural integrity and enhance the overall stability of the platforms. However, it is crucial to use corrosion-resistant steel rebars in offshore applications due to the harsh marine environment. The presence of saltwater, humidity, and exposure to chemicals can accelerate the corrosion process. Therefore, stainless steel rebars or epoxy-coated rebars are often preferred for offshore platforms to ensure long-term durability and prevent corrosion-related issues. Furthermore, it is essential to comply with relevant industry standards and regulations when using steel rebars in offshore oil and gas platforms. These standards outline specific requirements for material selection, fabrication, installation, and inspection to ensure the safety and reliability of the structures. In summary, steel rebars can be effectively used in offshore oil and gas platforms to reinforce concrete structures and enhance their strength and stability. However, the selection of corrosion-resistant steel rebars and adherence to industry standards are critical considerations to withstand the challenging marine environment and ensure the long-term integrity of the platforms.

Q: What is the role of steel rebars in preventing concrete spalling?: The role of steel rebars in preventing concrete spalling is crucial. Concrete spalling occurs when the outer layer of concrete chips, cracks, or breaks off due to various factors such as moisture, temperature changes, and corrosion. Steel rebars, also known as reinforcement bars, are embedded within the concrete to provide additional strength and support to the structure. When concrete is subjected to external forces or stress, such as heavy loads or seismic activity, the rebars help distribute the forces throughout the structure, preventing localized areas of weakness and reducing the likelihood of spalling. The rebars act as a reinforcement, increasing the tensile strength of the concrete and enhancing its ability to withstand tension and bending forces. Moreover, steel rebars also play a crucial role in preventing spalling caused by corrosion. Concrete is naturally porous, allowing moisture and harmful substances to penetrate its surface and reach the embedded rebars. Over time, these substances can cause the steel to corrode, expanding in size and exerting pressure on the surrounding concrete, leading to spalling. To combat this, rebars are usually coated with epoxy, galvanized, or made from stainless steel, to provide a protective barrier against moisture and corrosive agents. This protective coating significantly reduces the risk of corrosion and subsequent spalling, prolonging the lifespan of the concrete structure. In summary, steel rebars play a vital role in preventing concrete spalling by providing reinforcement, enhancing the tensile strength of the concrete, and distributing forces evenly throughout the structure. Additionally, the corrosion-resistant properties of properly coated rebars help mitigate the risk of spalling caused by moisture and corrosive agents.

Q: What are the guidelines for the proper anchoring of steel rebars in walls?: The guidelines for proper anchoring of steel rebars in walls typically involve factors such as the rebar size, spacing, embedment depth, and the type of wall construction. It is important to follow building codes and structural engineering standards specific to your region. Generally, rebars should be adequately spaced and securely anchored into the surrounding concrete or masonry to ensure proper load transfer and structural integrity. Additionally, proper cover thickness should be maintained to protect rebars from corrosion and ensure long-term durability.

Q: How are steel rebars used in the construction of power transmission towers?: Steel rebars are commonly used in the construction of power transmission towers to provide reinforcement and strength to the structure. These rebars are typically made of high-strength steel and are used in various components of the tower, such as the foundation, columns, and cross arms. In the foundation, steel rebars are embedded in concrete to increase its load-bearing capacity. The rebars help distribute the weight of the tower and the transmission lines, ensuring that the foundation remains stable and can withstand the forces exerted on it. Within the tower columns, steel rebars are used to reinforce the concrete structure, enhancing its overall strength and stability. This is crucial as power transmission towers are often exposed to strong winds, seismic activities, and other external forces. The rebars prevent the concrete from cracking or collapsing under these conditions, ensuring the tower's integrity and longevity. Steel rebars are also employed in the construction of cross arms, which are the horizontal members that support the transmission lines. These rebars provide additional reinforcement to the cross arms, enabling them to carry the weight of the lines effectively. This is especially important as power transmission lines can span over long distances and carry heavy loads. Overall, steel rebars play a vital role in the construction of power transmission towers by providing the necessary strength and reinforcement to ensure the tower's stability and durability. Without these rebars, the towers would be more susceptible to structural failures and pose a risk to the transmission lines and surrounding areas.

Q: What is the difference between hot-rolled and cold-rolled steel rebars?: The main difference between hot-rolled and cold-rolled steel rebars lies in the manufacturing process. Hot-rolled steel rebars are created by heating the steel billets and passing them through rollers to shape them into the desired form. This process results in a rougher surface and a larger diameter tolerance. On the other hand, cold-rolled steel rebars are manufactured by cooling the steel billets and then passing them through rollers at room temperature. This process produces a smoother surface and a more precise diameter tolerance. Overall, the choice between hot-rolled and cold-rolled steel rebars depends on the specific requirements of the application.

Q: How do steel rebars affect the overall corrosion resistance of marine structures?: Steel rebars have a significant impact on the overall corrosion resistance of marine structures. The presence of steel rebars in concrete marine structures can enhance or deteriorate their resistance to corrosion, depending on various factors. Firstly, steel rebars can enhance corrosion resistance when proper preventive measures are taken. For instance, if the rebars are adequately coated with anti-corrosion materials such as epoxy or zinc, they can provide an extra layer of protection against the corrosive effects of seawater. Additionally, proper concrete cover and compaction during construction can help prevent the penetration of seawater to the rebars, reducing the risk of corrosion. On the other hand, if steel rebars are not properly coated or if the concrete cover is insufficient, they can contribute to the degradation of marine structures. When exposed to the aggressive marine environment, rebars can undergo corrosion, leading to the formation of rust. The rust occupies more space than steel, causing an expansion that exerts pressure on the surrounding concrete. This pressure can result in cracking and spalling of the concrete, further exposing the rebars to corrosion and compromising the overall structural integrity of the marine structure. To mitigate the negative effects of steel rebars on corrosion resistance, regular maintenance and inspection are crucial. Periodic inspections can help identify any signs of corrosion, allowing for timely repairs or replacement of rebars. Additionally, cathodic protection systems can be implemented to provide an electrochemical countermeasure against corrosion, ensuring the longevity and durability of the marine structure. In conclusion, steel rebars play a vital role in the corrosion resistance of marine structures. Proper coating, concrete cover, and maintenance measures are essential in ensuring the rebars' positive contribution to corrosion resistance, while neglecting these factors can lead to the degradation of marine structures.

Q: Can steel rebars be used in earthquake-resistant structures?: Yes, steel rebars can be used in earthquake-resistant structures. Steel rebars provide strength and durability to reinforced concrete structures, making them capable of withstanding the forces and vibrations caused by earthquakes. The use of properly designed and placed steel rebars enhances the structural integrity and overall resistance of buildings against seismic events.

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