• Material steel rebar high quality from China System 1
  • Material steel rebar high quality from China System 2
Material steel rebar high quality from China

Material steel rebar high quality from China

Ref Price:
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Loading Port:
Guangzhou
Payment Terms:
TT OR LC
Min Order Qty:
100 m.t.
Supply Capability:
19000 m.t./month

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Specification

Standard:
AISI,ASTM
Technique:
Hot Rolled
Shape:
Round
Surface Treatment:
Dry
Steel Grade:
HRB400,RHB335
Certification:
ISO,SGS
Thickness:
6-28mm
Length:
6-12m
Net Weight:
1-2mt

Rebar has ridges that bind it mechanically to the concrete with friction, it can still be pulled out of the concrete under high stresses,

an occurrence that often precedes a larger-scale collapse of the structure. To prevent such a failure, rebar is either deeply embedded

into adjacent structural members, or bent and hooked at the ends to lock it around the concrete and other rebars. This first approach increases the friction locking the bar into place while the second makes use of the high compressive strength of concrete.

 

Common rebar is made of unfinished steel, making it susceptible to rusting. As rust takes up greater volume than the iron or steel

from which it was formed, it causes severe internal pressure on the surrounding concrete, leading to cracking, spalling, and ultimately, structural failure. This is a particular problem where the concrete is exposed to salt water, as in bridges built in areas where salt is

applied to roadways in winter, or in marine applications. Epoxy-coated rebar or stainless steel rebar may be employed in these situations at greater initial expense, but significantly lower expense over the service life of the project. Fiber-reinforced polymer rebar is now also being

used in high-corrosion environments

Features
1
Pure steel quality, stable chemical contents, small tolerance.
2
Constant Quality, good drawing performance.
3
High dimension accuracy degree, accuracy degree of Level C up to 80%, smooth surface, less scale, easy to be pickled.
4
Automatic bundling with 4 lines by Machine in tidy and good looks
5
Big high quality percentage, small coil percentage, and heavy coil weight for Hard Coil.
6
High sorbitizing percentage.

 

Product Description :

Chemical composition (%):

Steel

C

Si

Mn

P

S

Ceq

HRB335

 

0.25

 

0.80

 

1.60

 

0.045

 

0.045

0.52

HRB400

0.54

HRB500

0.55

Mechanical properties

Steel

Rel/

MPa

Rm/

MPa

A/

%

Agt/

%

HRB335

335

455

17

 

7.5

HRB400

400

540

16

HRB500

500

630

15

Package:

Standard export packing or as customer's request

Application:

Construction, building, bridge, road. ect

Payment terms

1).100% irrevocable L/C at sight.
2).30% T/T prepaid and the balance against the copy of B/L.
3).30% T/T prepaid and the balance against L/C

Delivery time

15-30 days after receipt of L/C or deposit by T/T

 

Material steel rebar high quality from China

Material steel rebar high quality from China

Packing:

In bundles, each bundle weight 3.5 tons. Load by container or by bulk verssel.

Material steel rebar high quality from China

Material steel rebar high quality from China

 

Our service

(1) We cooperate with famous factories with advanced equipment and well trained workers.

(2) We can provide factory price with trading company service.

(3) We continuously work on the improvement of our processes, guaranteeing consistently high standards 

of quality to keep none compensation.

(4) We guarantee 24 hours response and 48 hours solution providing service.

(5) We accept small order quantity before formal cooperation.

(6) We deliver the agreed quality at the agreed time, reacting to changes in customer wishes in a flexible way.

(7) Due to our volume and selling power, we have excellent freight rates with shipping lines.

(8) We strive to always be fair and honest in our dealings with customers.

(9) We strive to work together with customers to achieve much more than we can achieve alone.

(10) Through our passion and commitment we aim to be a market leader in all our key markets. To maintain 

our position as market leader we must continue to add value in all that we do.

FAQ:

1.Q: What's your MOQ(minimum order quantity)?

A: One full container, mixed acceptable .

2. Q: What's your packing methods?

A: Packed in bundle or bulk ..

3. Q: How can I buy  CNBM products in my country?

A:Please send us an inquiry or email ,we will reply to you if there is distributor in your country

4. Q: Can we visit your factory?

 A: Warmly welcome. Once we have your schedule, we will arrange the professional sales team to follow up your case.

5. Q: How long does it take to get the product if i place an order?

 A:With the process of your requirements,we will pack and deliver in 3-7 days. If it is by sea shipment,it will take 15-45 days depending on different locations

 

Q: Can steel rebars be used in structures with limited construction equipment?
Indeed, structures with limited construction equipment can utilize steel rebars. These versatile elements can be effortlessly handled and installed with minimal equipment. One can easily cut them to the desired size using handheld tools like bolt cutters or torches, thereby eliminating the necessity for bulky machinery. Additionally, their lightweight nature facilitates convenient transportation and maneuvering on-site. The flexibility of steel rebars permits the application of diverse construction techniques, such as interlacing them with wire or employing wire mesh to fortify concrete. To summarize, steel rebars prove to be a practical option for structures lacking extensive construction machinery, offering both strength and durability.
Q: What are the guidelines for proper curing of concrete structures with steel rebars?
To ensure the strength, durability, and longevity of concrete structures with steel rebars, it is crucial to properly cure them. Here are some guidelines to consider: 1. Moisture Control: Maintaining a moist environment around the concrete structure is vital during the curing process. This can be done by either covering the concrete surface with a plastic sheet or using a curing compound. These measures prevent water evaporation, which can lead to shrinkage, cracking, and reduced strength. 2. Curing Duration: The duration of curing depends on factors like the concrete mix, environmental conditions, and the complexity of the structure. Generally, curing should last at least 7 days to allow sufficient strength development. However, for structures with steel rebars, it is advisable to extend the curing period to 14-28 days to ensure proper hydration and bonding between the concrete and steel. 3. Temperature Control: Temperature plays a crucial role in the curing process. Avoiding extreme temperature fluctuations is important as they can negatively affect concrete strength and durability. High temperatures can cause rapid drying and shrinkage, leading to cracks. Freezing temperatures can impede hydration. Therefore, maintaining a moderate and consistent temperature is essential for effective curing. 4. Protection from External Factors: During the curing period, concrete structures should be shielded from external factors that can compromise their integrity. This involves avoiding direct sunlight, rain, strong winds, or any adverse weather conditions. Additionally, protecting the concrete from potential damage caused by construction activities or heavy loads is vital. 5. Regular Inspection and Maintenance: Regularly inspecting the concrete structure throughout the curing process is necessary to identify issues like cracks, honeycombing, or inadequate curing. Any problems should be addressed promptly to prevent further damage. Once the curing process is complete, implementing a proper maintenance plan is crucial to ensure long-term durability and structural integrity. By adhering to these guidelines, the proper curing of concrete structures with steel rebars can be achieved, resulting in strong, durable, and dependable construction.
Q: Can steel rebars be used in corrosive environments?
No, steel rebars are not suitable for use in corrosive environments as they are prone to corrosion and can weaken over time.
Q: Can steel rebars be used in the construction of water treatment plants?
Yes, steel rebars can be used in the construction of water treatment plants. Steel rebars are commonly used in reinforced concrete structures, including water treatment plants, to provide strength and durability to the overall construction. The rebars help to reinforce the concrete and provide structural support, making them suitable for the rigorous demands and environmental conditions of water treatment plants.
Q: How are steel rebars protected against rust or corrosion?
Steel rebars are protected against rust or corrosion through a process called corrosion protection, which involves either applying a protective coating or using corrosion-resistant materials such as stainless steel.
Q: How do steel rebars affect the maintenance requirements of a structure?
The maintenance requirements of a structure are significantly influenced by steel rebars, also known as reinforcing bars. These bars, which are constructed from steel, are embedded in concrete to provide strength and durability to the structure. Enhancing the overall structural integrity of a building or infrastructure is one of the primary ways in which steel rebars impact maintenance. The presence of rebars greatly increases the load-bearing capacity of concrete, enabling it to withstand external forces such as wind, earthquakes, and heavy loads. This reinforcement helps to prevent cracks, deformations, and structural failures, ultimately reducing the maintenance needs of a structure. Moreover, steel rebars also contribute to the longevity of a structure. By offering tensile strength to concrete, they shield it from the negative effects of shrinkage and expansion caused by temperature fluctuations. These rebars act as a framework that holds the concrete together, minimizing the risk of cracks and ensuring the structural stability of the building over time. As a result, the maintenance requirements are reduced as the structure remains intact and resilient against environmental factors. Nevertheless, it is important to acknowledge that steel rebars can also impact maintenance requirements in specific situations. If the rebars are not designed, installed, or protected properly, they can be vulnerable to corrosion. Corrosion occurs when moisture and oxygen penetrate the concrete and reach the steel, causing it to rust. Rusting rebars can lead to the expansion of steel, creating internal pressure that can result in cracking and spalling of the concrete. Consequently, regular inspections, maintenance, and protection measures such as epoxy coating or cathodic protection systems are necessary to prevent corrosion and ensure the longevity of the structure. In conclusion, steel rebars have a positive impact on the maintenance requirements of a structure by enhancing its strength, durability, and longevity. They decrease the need for repairs and maintenance caused by structural failures and increase the overall resilience against external forces. However, proper design, installation, and protection of rebars are crucial to avoid corrosion-related issues that could increase maintenance needs.
Q: How do steel rebars contribute to the crack control in concrete structures?
Steel rebars contribute to crack control in concrete structures by providing tensile strength. Concrete is strong in compression but weak in tension. When a load is applied to a concrete structure, such as a beam or column, the rebars resist the tension forces that would otherwise cause cracking or failure. By reinforcing the concrete with steel rebars, the structure becomes more resistant to cracking, improving its overall strength and durability. Additionally, the rebars help distribute stress throughout the structure, reducing the likelihood of localized cracking and improving the structural integrity.
Q: What are the advantages of using stainless steel rebars?
Using stainless steel rebars in construction projects offers several advantages. Firstly, these rebars have a remarkable resistance to corrosion, making them perfect for structures in harsh environments such as coastal or industrial areas. Unlike traditional carbon steel rebars, stainless steel rebars do not easily rust or corrode, ensuring the durability and longevity of the structure. Secondly, stainless steel rebars possess a higher tensile strength compared to carbon steel rebars. This means they can endure greater stress and loads without deforming or breaking, resulting in a safer and more reliable structure. Moreover, their high tensile strength allows for the utilization of smaller rebars, which saves construction costs and reduces the overall weight of the structure. Furthermore, stainless steel rebars exhibit excellent fire resistance properties. They retain their strength and integrity much better than carbon steel in the event of a fire, reducing the risk of structural collapse. This is particularly crucial in buildings with high fire safety requirements, such as hospitals, schools, and high-rise structures. Another advantage of stainless steel rebars is their low maintenance requirements. Due to their corrosion resistance, they do not need regular inspections or costly protective coatings. This saves both time and money in maintenance efforts. Lastly, stainless steel rebars are highly sustainable and environmentally friendly. They are 100% recyclable, reducing the demand for new raw materials and minimizing waste in construction projects. Additionally, the long lifespan of stainless steel rebars reduces the need for frequent replacements, further minimizing the environmental impact. To summarize, the benefits of using stainless steel rebars include excellent corrosion resistance, high tensile strength, superior fire resistance, low maintenance requirements, and sustainability. These advantages make stainless steel rebars the preferred choice for construction projects that prioritize durability, safety, and long-term value.
Q: Can steel rebars be used in underwater structures?
Yes, steel rebars can be used in underwater structures. Steel rebars are commonly used in construction projects to reinforce concrete structures and provide additional strength and stability. When it comes to underwater structures, such as bridges, dams, and offshore platforms, the use of steel rebars is crucial due to their excellent strength and durability. However, the use of steel rebars in underwater structures requires additional considerations. One of the main concerns is corrosion, as exposure to water and salt can accelerate the corrosion process. To mitigate this issue, corrosion-resistant steel rebars, such as stainless steel or epoxy-coated rebars, are used. These rebars have protective layers that prevent direct contact between the steel and water, minimizing the risk of corrosion. Furthermore, proper design and construction techniques are essential when using steel rebars in underwater structures. Adequate concrete cover and proper spacing between rebars are crucial to ensure sufficient protection against corrosion and maintain the structural integrity of the underwater structure. Additionally, regular inspection and maintenance are necessary to identify and address any signs of corrosion or deterioration in the rebars. In conclusion, steel rebars can be used in underwater structures, but it requires careful consideration of corrosion protection measures and adherence to proper design and construction practices. With the right precautions in place, steel rebars can provide the necessary strength and durability for underwater structures.
Q: What is the effect of chloride ions on steel rebars?
The presence of chloride ions in the environment can have a detrimental effect on steel rebars. Chloride ions can penetrate the protective oxide layer on the surface of the steel and react with the iron atoms, leading to the formation of iron chloride compounds. These compounds are highly corrosive and can cause the rebars to rust and eventually weaken. This corrosion process, known as chloride-induced corrosion, can significantly reduce the structural integrity and lifespan of steel rebars, posing a risk to the overall stability of reinforced concrete structures. Therefore, it is crucial to protect steel rebars from chloride exposure through proper design, construction, and maintenance practices to ensure their long-term durability and safety.

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