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: How are steel rebars protected against lightning strikes?: Steel rebars are protected against lightning strikes through a process known as "bonding." During the construction of a structure, steel rebars are connected to a lightning protection system to redirect the electrical energy from a lightning strike safely into the ground. This system typically consists of lightning rods or air terminals installed at the highest points of the structure, which attract the lightning strike. The rebars are then interconnected with conductor cables, creating a network that ensures the lightning current is effectively grounded. The conductor cables are attached to the lightning rods and extend down the structure, connecting with the rebars at various points. By bonding the rebars with the lightning protection system, the electrical charge from a lightning strike is efficiently conducted away from the structure and harmlessly discharged into the ground. Furthermore, additional measures such as surge protection devices are often installed to further protect the rebars and the overall structure from potential damage caused by voltage surges resulting from lightning strikes. These surge protection devices help to minimize the risk of electrical surges that could potentially compromise the integrity of the rebars. In summary, steel rebars are protected against lightning strikes by being properly bonded to a lightning protection system. This ensures that the electrical energy from a lightning strike is safely directed away from the structure and grounded, reducing the risk of damage to the rebars and the overall structural integrity.

Q: What is the process of connecting steel rebars to structural members?: The process of connecting steel rebars to structural members involves several steps to ensure a secure and reliable connection. Firstly, the rebars, which are typically long, steel bars with ridges or deformations on their surface, need to be accurately positioned within the structural member according to the design specifications. This is often done by using spacers or chairs to maintain the proper spacing between the rebars and the surrounding formwork. Next, the rebars are joined to the structural member using various methods. One common method is through lap splicing, where the rebars are overlapped for a certain distance and then tied together using wire or mechanical connectors. The length of the overlap is determined by engineering calculations to ensure sufficient strength and load transfer. Another method is the use of mechanical couplers, which are pre-fabricated devices that provide a reliable connection between rebars. These couplers are designed to grip the rebars tightly and transfer the load effectively. They offer advantages such as faster installation, reduced labor costs, and improved structural integrity. In addition to splicing, the rebars may also need to be anchored or hooked into the structural member. Anchoring involves extending the length of the rebar beyond the connection point and then bending it back into the concrete, creating a hook shape. This provides additional resistance to the pull-out forces. Throughout the process, it is crucial to ensure that the rebars are clean, free from rust, and properly aligned. Any contaminants or misalignments can weaken the connection and compromise the structural integrity. Therefore, thorough inspection and quality control measures are essential to ensure a successful connection. Overall, the process of connecting steel rebars to structural members involves careful planning, accurate positioning, proper splicing or coupling, and thorough inspection. By following these steps, a strong and durable connection can be achieved, ensuring the safety and stability of the structure.

Q: What is the role of steel rebars in preventing concrete creep?: Steel rebars play a crucial role in preventing concrete creep by providing reinforcement and stability to the concrete structure. The rebars act as a framework within the concrete, distributing the tensile forces and preventing the concrete from deforming or cracking over time. Additionally, steel rebars help to control the shrinkage and expansion of concrete, minimizing the potential for creep and ensuring the long-term durability and integrity of the structure.

Q: What is the typical yield-to-ultimate strength ratio of steel rebars?: The typical yield-to-ultimate strength ratio of steel rebars is approximately 0.85.

Q: What is the process of epoxy-coating steel rebars?: To achieve a durable and corrosion-resistant coating on steel rebars, several steps are involved in the process of epoxy-coating. Here is a general overview of the process: Firstly, the steel rebars undergo thorough surface preparation to eliminate any rust, oil, or other contaminants. This can be accomplished through techniques such as sandblasting or chemical cleaning. Once the rebars are cleaned, a primer is applied to enhance adhesion between the steel surface and the epoxy coating. Additionally, the primer provides an extra layer of protection against corrosion. After the primer has dried, the epoxy coating is applied to the rebars. This can be done using various methods, including spray application or immersing the rebars in an epoxy tank. Following the application of the epoxy coating, the rebars are left to cure. This controlled process allows the coating to harden and fully bond with the steel surface. The curing time varies depending on the specific epoxy and environmental conditions. Once the rebars have cured, a thorough inspection is conducted to ensure the uniform application of the epoxy coating and that it meets the required specifications. This inspection may involve visual checks, adhesion tests, and measurements of coating thickness. After passing inspection, the epoxy-coated steel rebars are packaged and stored in a controlled environment to protect them from damage or further contamination. It is important to note that the specific process may vary depending on factors such as the manufacturer, project requirements, and the type of epoxy coating used. Following industry standards and guidelines is crucial to ensure the quality and effectiveness of the epoxy-coated steel rebars.

Q: What is the impact of moisture on steel rebars?: Moisture can have a detrimental impact on steel rebars as it promotes corrosion and rust formation. When moisture comes into contact with steel rebars, it creates an electrochemical reaction that leads to the formation of rust. This process weakens the steel, reduces its load-bearing capacity, and compromises the structural integrity of the reinforced concrete. Over time, the expansion of rust can cause cracks and spalling in the surrounding concrete, further accelerating the deterioration of the rebar and potentially causing structural failure. To prevent these issues, proper measures such as adequate concrete cover, waterproofing, and regular maintenance should be implemented to minimize the exposure of rebars to moisture.

Q: What are the different grades of steel rebars used in bridge construction?: In bridge construction, different grades of steel rebars are used based on the specific requirements and load-bearing capacities of the structure. The most commonly used grades of steel rebars in bridge construction are: 1. Grade 40: This is the lowest grade of steel rebar used in bridge construction. It has a minimum yield strength of 40,000 pounds per square inch (psi). Grade 40 steel rebars are typically used for lighter loads and smaller bridge structures. 2. Grade 60: This is the most commonly used grade of steel rebar in bridge construction. It has a minimum yield strength of 60,000 psi. Grade 60 steel rebars are suitable for medium to heavy loads and are commonly used in bridge piers, girders, and deck slabs. 3. Grade 75: This grade of steel rebar has a minimum yield strength of 75,000 psi. Grade 75 steel rebars are utilized for heavy loads and large bridge structures where higher strength is required. They are commonly used in the construction of high-rise bridges and long-span structures. 4. Grade 80 and Grade 100: These are high-strength steel rebars with minimum yield strengths of 80,000 psi and 100,000 psi, respectively. These grades of steel rebars are used in specialized bridge construction projects that require exceptional strength and durability. They are commonly used in the construction of cable-stayed bridges and suspension bridges. It is important to note that the selection of the appropriate grade of steel rebar for bridge construction depends on various factors such as anticipated loads, span length, design specifications, and local building codes. Consulting with structural engineers and following the recommended guidelines ensures the appropriate grade of steel rebar is used to ensure the safety and longevity of the bridge structure.

Q: Can steel rebars be used in swimming pool construction?: Yes, steel rebars can be used in swimming pool construction. Steel rebars are commonly used as reinforcement in concrete structures, including swimming pools, to provide additional strength and structural integrity.

Q: Are steel rebars suitable for use in high-traffic areas like bridges?: Yes, steel rebars are suitable for use in high-traffic areas like bridges. Steel rebars provide exceptional strength and durability, making them ideal for withstanding heavy loads and frequent use. Additionally, steel rebars offer excellent resistance to corrosion, ensuring the longevity and structural integrity of bridges in high-traffic areas.

Q: How do steel rebars impact the constructability and formwork requirements of concrete elements?: The constructability and formwork requirements of concrete elements are greatly affected by steel rebars. These reinforcement bars, also called rebars, are extensively used in concrete construction to strengthen and increase the durability of structural elements. To begin with, the presence of rebars impacts the constructability of concrete elements by providing structural integrity and load-bearing capacity. By strategically placing rebars in areas like beams, columns, and slabs, the overall strength and stability of the structure are significantly improved. This enables the construction of larger and more intricate concrete elements, as rebars help distribute loads more efficiently. Additionally, rebars also have an impact on the formwork requirements of concrete elements. Formwork refers to the temporary structure used to support the concrete until it sets and gains enough strength to support itself. The inclusion of rebars requires careful consideration when designing the formwork, as the presence of reinforcement bars can increase the weight and volume of the concrete. The size, spacing, and positioning of rebars influence the design and construction process of the formwork. The formwork must be designed to accommodate the rebars and ensure proper placement and consolidation of the concrete around them. This may entail additional reinforcement in the formwork, such as tie wires or supports, to prevent displacement or movement of the rebars during concrete pouring. Furthermore, rebars also impact the overall timeline and cost of the construction project. The need for additional formwork materials and reinforcement can raise both material and labor costs. Additionally, the presence of rebars may require more time for formwork installation, concrete pouring, and curing, as the rebars need to be correctly positioned and secured within the concrete elements. In conclusion, steel rebars have a significant impact on the constructability and formwork requirements of concrete elements. They enhance the structural integrity of the concrete, allowing for the construction of larger and more intricate elements. However, their inclusion also necessitates careful planning and design of the formwork, considering the size, spacing, and positioning of the rebars. Overall, rebars play a crucial role in ensuring the strength, stability, and longevity of concrete structures.

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