GB STANDARD HIGH QUALITY HOT ROLLED REBAR

GB STANDARD HIGH QUALITY HOT ROLLED REBAR System 1

GB 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

GB 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: Can steel rebars be used in pre-tensioned concrete structures?: No, steel rebars cannot be used in pre-tensioned concrete structures. Pre-tensioned concrete structures rely on the use of high-strength tendons made of materials such as high-strength steel or carbon fiber reinforced polymers (CFRP) to apply tension to the concrete before it cures. This pre-tensioning process helps in enhancing the structural strength and load-bearing capacity of the concrete elements. Steel rebars, on the other hand, are used in reinforced concrete structures where they provide additional strength to resist tensile forces.

Q: Can steel rebars be used in underground construction or tunnels?: Yes, steel rebars can be used in underground construction or tunnels. Steel rebars provide reinforcement and strength to concrete structures, making them suitable for use in underground construction projects where durability and structural integrity are crucial.

Q: How do steel rebars affect the overall cost of maintenance and repairs?: Steel rebars can significantly impact the overall cost of maintenance and repairs. These reinforcement bars enhance the strength and durability of concrete structures, reducing the likelihood of cracks, deterioration, and structural failures over time. By preventing such issues, steel rebars minimize the need for extensive repairs and maintenance, ultimately lowering associated costs in the long run.

Q: What are the fire resistance properties of steel rebars?: Steel rebars have excellent fire resistance properties. Due to their high melting point, steel rebars can withstand extreme temperatures without losing their structural integrity. This makes them ideal for reinforcing concrete structures in order to enhance their fire resistance and prevent collapse during a fire.

Q: How do steel rebars affect the overall cost of maintenance?: Steel rebars can significantly impact the overall cost of maintenance. By utilizing high-quality steel rebars in construction projects, the durability and strength of structures are enhanced, leading to reduced maintenance needs in the long run. The use of corrosion-resistant rebars can also prevent deterioration caused by environmental factors, lowering maintenance expenses. Conversely, using low-quality or substandard rebars may result in structural issues and increased maintenance costs over time.

Q: What is the role of steel rebars in minimizing the risk of progressive collapse?: The risk of progressive collapse in structures can be significantly reduced by the use of steel rebars. Progressive collapse occurs when a primary structural element fails, causing adjacent elements to also fail and resulting in the collapse of the entire structure. In this context, steel rebars have a primary function of improving structural integrity and adding strength to load-bearing elements like columns, beams, and slabs. By reinforcing these elements with steel rebars, the structure becomes more resistant to sudden and catastrophic failures. Typically, steel rebars are embedded within the concrete, creating a composite structure known as reinforced concrete. These rebars serve as reinforcements against the concrete's weakness in tension. When subjected to loads, the rebars bear the tension forces while the concrete handles compression forces. This combination results in a more balanced distribution of the load and prevents localized failures. Steel rebars are especially important in preventing progressive collapse during unexpected failures or extreme events, such as explosions or impacts. They provide additional ductility and redundancy to the structure, ensuring that if one element fails, the load can be distributed to surrounding elements and preventing a domino effect of failure. Beyond preventing progressive collapse, steel rebars also contribute to the overall stability of a structure by increasing its load-carrying capacity. By reinforcing structural elements, they allow for larger spans and higher design loads, reducing the risk of overloading and potential failure. To maintain the effectiveness of steel rebars in minimizing the risk of progressive collapse, regular inspections and maintenance are necessary. These inspections involve checking for corrosion, ensuring proper placement, and providing adequate cover for the rebars to protect them from environmental factors that could compromise their integrity. In conclusion, the use of steel rebars is vital in minimizing the risk of progressive collapse. They reinforce critical load-bearing elements, enhance structural integrity, and provide redundancy. Steel rebars enable structures to withstand unexpected failures and extreme events, ensuring the safety and stability of buildings and infrastructure.

Q: How are steel rebars installed in construction projects?: Steel rebars are installed in construction projects as a vital component of reinforced concrete structures. The process of installing steel rebars involves a series of steps. Firstly, the construction plans and specifications are reviewed to determine the required size, length, and placement of the rebars. This information is crucial to ensure the rebars provide the necessary strength and support to the structure. Next, the rebars are cut and shaped according to the specifications. This is typically done using specialized tools such as rebar cutters and benders. The rebars are usually supplied in long lengths and are cut to the required size on-site. Once the rebars are prepared, they are positioned and secured in the formwork or molds that will shape the concrete. This is done by placing the rebars at the desired locations and using wire or rebar ties to hold them in place. The ties are typically twisted around the rebars using pliers or a similar tool. This ensures that the rebars remain in their correct positions during the pouring and curing of the concrete. During the concrete pouring phase, the rebars are carefully positioned to ensure they are evenly distributed and adequately spaced. This is important for providing structural integrity and preventing the occurrence of weak spots in the concrete. After the concrete is poured, it is left to cure and harden. During this time, the rebars become embedded within the concrete, forming a strong bond. This bond creates a reinforced concrete structure that is capable of withstanding various loads and forces. In summary, the installation of steel rebars in construction projects involves cutting and shaping the rebars, positioning them correctly within the formwork, and securing them in place using ties. This process is crucial for creating reinforced concrete structures that are strong and durable.

Q: What are the factors to consider while selecting steel rebars for a construction project?: When selecting steel rebars for a construction project, there are several factors that should be considered. Firstly, the grade and type of steel rebar should be chosen based on the specific requirements and design of the project. Factors such as the expected loads, environmental conditions, and the type of structure being built will influence the choice of steel rebar. Additionally, the diameter and spacing of the rebars should be determined based on the structural design and the anticipated stresses on the project. The corrosion resistance and durability of the rebars, as well as their ability to bond with concrete, should also be taken into account. Lastly, the availability and cost of the steel rebars should be considered to ensure the project remains within budget without compromising on quality.

Q: Are steel rebars easy to cut and shape?: Yes, steel rebars are relatively easy to cut and shape due to their malleability and strength. They can be cut using various tools such as a hacksaw or an angle grinder, and can also be bent or shaped into different forms using specialized equipment.

Q: How do steel rebars impact the durability of concrete structures?: The durability of concrete structures is significantly influenced by steel rebars. Adding steel rebars improves the strength and overall performance of concrete, making it more resistant to various external forces and extending its lifespan. To begin with, steel rebars offer structural reinforcement to concrete structures. Concrete has relatively low tensile strength, making it susceptible to cracking and failure under tensile stresses. By incorporating steel rebars into the concrete, these stresses are effectively distributed throughout the structure, preventing the formation of cracks and enhancing its load-bearing capacity. This reinforcement ensures that the concrete structure can withstand the forces it experiences, whether from gravity, wind, earthquakes, or other external factors. Additionally, steel rebars play a vital role in corrosion prevention in concrete structures. Concrete is highly alkaline, creating a protective environment for embedded steel. However, factors like moisture exposure, chloride ions, and carbonation can break down this protective layer over time, leading to steel corrosion. Corrosion weakens the rebars and causes the surrounding concrete to crack and spall, compromising the structure's durability. By using steel rebars with appropriate coatings or stainless steel, the risk of corrosion is significantly reduced, enhancing the structure's longevity and durability. Furthermore, steel rebars contribute to the durability of concrete structures by providing dimensional stability. Concrete tends to shrink and expand due to temperature and moisture changes, which can result in cracking and deformation. Incorporating steel rebars helps minimize these movements by providing restraint and stabilizing the structure, preventing excessive cracking and maintaining its integrity over time. In conclusion, steel rebars play a crucial role in enhancing the durability of concrete structures. They provide structural reinforcement, prevent corrosion, and ensure dimensional stability. By incorporating steel rebars into concrete, structures become stronger, more resistant to external forces, and have an extended lifespan. This ultimately leads to safer and more durable buildings and infrastructure.

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