BS STANDARD HIGH QUALITY HOT ROLLED REBAR

BS STANDARD HIGH QUALITY HOT ROLLED REBAR System 1

BS 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

BS 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:What is the effect of vibration on steel rebars?: Vibration can have both positive and negative effects on steel rebars. On one hand, controlled vibration during the pouring and placement of concrete can help to remove air bubbles and ensure better bonding between the rebar and concrete, enhancing the overall structural integrity. On the other hand, excessive or prolonged vibration can lead to fatigue and weakening of the rebars, potentially compromising their strength and durability over time. Therefore, it is essential to carefully regulate and monitor vibration to maintain the optimal balance for the performance and longevity of steel rebars.

Q:What are the guidelines for proper spacing and lapping of steel rebars in concrete structures?: The guidelines for proper spacing and lapping of steel rebars in concrete structures vary depending on the specific design and structural requirements. However, some general recommendations exist. The rebars should be adequately spaced to ensure proper concrete cover, allowing for corrosion protection and sufficient bond strength. Typically, the minimum spacing between parallel rebars is around 1.5 times the diameter of the larger bar or 25 mm (1 inch), whichever is greater. Lapping, or overlapping, of rebars is necessary to create a continuous load path. The length of the overlap depends on the design and the type of rebar connection being used. It is important to follow the specifications provided by structural engineers and adhere to local building codes to ensure the proper spacing and lapping of rebars in concrete structures.

Q:How do steel rebars affect the overall thermal stability of a structure?: Steel rebars can significantly improve the overall thermal stability of a structure. Due to their high thermal conductivity, steel rebars help in dissipating heat more efficiently and evenly throughout the structure. This prevents the formation of localized hot spots and reduces the risk of thermal expansion, which can cause structural deformations and cracks. Additionally, steel rebars enhance the structural integrity of a building during fire incidents by providing necessary reinforcement and preventing sudden collapses.

Q:What is the effect of impurities on the corrosion resistance of steel rebars?: Impurities can have a significant effect on the corrosion resistance of steel rebars. Steel rebars are primarily composed of iron and carbon, but impurities such as sulfur, phosphorus, and silicon can be present in varying amounts. Sulfur, for example, is a common impurity found in steel. It can react with water and oxygen to form sulfuric acid, which accelerates the corrosion process. This acid attack can cause the rebars to deteriorate faster, reducing their overall strength and durability. Phosphorus is another impurity that can negatively impact the corrosion resistance of steel rebars. It can promote the formation of localized corrosion sites, known as pitting, which can lead to the development of rust and eventual structural damage. Silicon, although generally considered a beneficial element in steel production, can also have an adverse effect when present in excessive amounts. Higher silicon levels in rebars can lead to the formation of a protective oxide layer, but this layer can sometimes be porous, allowing the penetration of corrosive agents and resulting in corrosion. Overall, the presence of impurities in steel rebars can compromise their corrosion resistance. It is crucial to ensure that the steel used in construction meets the specified standards and contains minimal impurities. Additionally, proper maintenance and regular inspection of rebars are essential to identify and address any potential corrosion issues before they lead to significant damage or structural failures.

Q:What is the role of steel rebars in pile foundation construction?: Steel rebars play a crucial role in pile foundation construction. Pile foundations are used to transfer the load of a structure to deeper layers of soil or rock, ensuring stability and preventing settlement. In this process, steel rebars are used to reinforce the concrete piles, enhancing their strength and durability. The main function of steel rebars in pile foundation construction is to provide tensile strength to the concrete. While concrete is strong in compression, it is weak in tension. By placing steel rebars within the concrete, the resulting combination creates a reinforced structure that can withstand both compression and tension forces. Steel rebars also help to prevent cracking and provide structural integrity to the piles. As the piles are subjected to various loads, including vertical and lateral forces, the rebars help distribute these loads evenly and prevent the concrete from cracking or failing under stress. This ensures the stability and longevity of the pile foundation. Furthermore, steel rebars help to improve the overall performance of the piles. They increase the overall load-carrying capacity of the foundation, allowing it to support heavier structures or loads. The rebars also enhance the resistance of the piles to various external factors such as earthquakes, wind loads, and soil movement. In summary, the role of steel rebars in pile foundation construction is to provide tensile strength, prevent cracking, and enhance the overall performance and durability of the foundation. The use of steel rebars ensures that the pile foundation can effectively transfer loads and maintain stability, making it an essential component in the construction of strong and reliable structures.

Q:What is the maximum spacing allowed between steel rebars in concrete?: The maximum spacing allowed between steel rebars in concrete typically depends on various factors such as the structural design requirements, the intended use of the concrete structure, and the specific building codes or standards being followed. However, as a general guideline, the maximum spacing between steel rebars in concrete is often recommended to be within the range of 3 to 6 times the diameter of the rebar.

Q:Can steel rebars be used in the construction of airports?: Yes, steel rebars can be used in the construction of airports. Steel rebars are commonly used in reinforced concrete structures, including airport runways, taxiways, and even terminal buildings. Their high tensile strength and durability make them suitable for withstanding heavy loads and ensuring the structural integrity of airport infrastructure.

Q:Are steel rebars suitable for use in earthquake-prone regions?: Steel rebars are a suitable option for use in regions prone to earthquakes. They are commonly utilized in the construction industry to strengthen concrete structures, providing increased resistance against the powerful forces unleashed by earthquakes. The flexibility of steel allows it to effectively absorb and distribute energy during seismic events, thereby minimizing potential damage. In addition, the presence of steel rebars significantly improves the overall structural integrity of buildings, enabling them to withstand seismic activities more effectively. Moreover, steel rebars can be specifically designed and installed to adhere to seismic design codes and standards applicable to earthquake-prone areas, ensuring the safety of the structures. In summary, steel rebars are a dependable and efficient choice for reinforcing buildings in regions susceptible to earthquakes.

Q:How do steel rebars affect the overall load distribution of concrete structures?: Steel rebars significantly affect the overall load distribution of concrete structures by providing tensile strength and reinforcing the concrete. The rebars absorb and distribute the applied load throughout the structure, reducing the risk of cracking and enhancing the structural integrity. Without rebars, concrete structures would be more prone to failure under heavy loads or external forces.

Q:What are the guidelines for inspecting and testing steel rebars on-site?: To ensure the structural integrity and safety of a construction project, it is essential to conduct on-site inspections and tests on steel rebars. Here are some guidelines to consider: 1. Begin with a visual inspection, checking for any visible defects such as rust, cracks, or deformities. Also, ensure that the rebars' size, shape, and alignment comply with the project's specifications and standards. 2. Keep accurate documentation of the rebars, including their origin, grade, and dimensions. This information will help track compliance with the project's requirements and identify any potential issues. 3. Take representative samples from each batch of rebars for further testing. The number of samples required may vary depending on the project's specifications and regulatory requirements. 4. Verify compliance with the project's requirements by measuring the rebars' length, diameter, and shape. Ensure that they are within the permissible limits and not bent or twisted excessively. 5. Conduct a chemical composition analysis to ensure that the rebars meet the specified standards. This analysis typically involves testing for elements like carbon, sulfur, phosphorus, and manganese. 6. Determine the rebars' mechanical properties through tensile and yield strength tests. This testing helps ensure that the rebars can withstand the expected loads and stresses during construction. 7. Assess the rebars' ductility and ability to withstand bending without fracture or significant deformation through a bend test. This test is particularly important for rebars used in reinforced concrete structures. 8. Use ultrasonic testing techniques to detect any internal defects that may affect the rebars' performance. These defects, such as voids, cracks, or inclusions, may not be visible to the naked eye. 9. Evaluate the rebars' resistance to corrosion, especially in moisture or chemically exposed environments. This assessment may involve techniques such as measuring corrosion potential or analyzing chloride content. 10. Keep comprehensive records of all inspection and testing activities, including test results and any deviations from the project's specifications. This documentation acts as evidence of compliance and aids in future audits or quality control checks. It is important to note that these guidelines provide a general framework for on-site inspection and testing of steel rebars. Always refer to specific project requirements, industry standards, and local regulations for a more detailed and accurate procedure.

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