Deformed steel bar 6-40 MM HRB 400 HRB 500
- Loading Port:
- Qingdao
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 600 m.t.
- Supply Capability:
- 19452 m.t./month
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Specification
Rebar is common steel reinforcing bar, an important component of reinforced concrete and reinforced masonry structures.
It is usually formed from mild steel, and is given ridges for better frictional adhesion to the concrete.
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.
Most grades of steel used in rebar cannot accept welding; such as, to adjacent steel plates or as means to bind single pieces
of rebar together. However, special grades of rebar steel and welding rods make welding by expert welders possible.
Our Advantage:
High quality steel products from 1 class mills in China
Reasonable price
Professionalism of the products
On-time delivery
Complete documents and certificates
Sincere service to meet our clients' requirements
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. | ||||||||||
Delivery time | 15-30 days after receipt of L/C or deposit by T/T | ||||||||||
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.
Packing:
In bundles, each bundle weight 3.5 tons. Load by container or by bulk verssel.
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 marine or coastal construction projects?
- Yes, steel rebars can be used in marine or coastal construction projects. However, it is important to use corrosion-resistant steel rebars, such as epoxy-coated or stainless steel rebars, to prevent rust and deterioration caused by the harsh saltwater environment.
- Q: Can steel rebars be used in the construction of hotels and resorts?
- Yes, steel rebars can be used in the construction of hotels and resorts. In fact, steel rebars are commonly used in the construction industry for reinforcing concrete structures, including hotels and resorts, due to their excellent strength, durability, and ability to withstand heavy loads. They are crucial in providing structural stability and enhancing the overall safety and longevity of the buildings.
- Q: How do steel rebars reinforce concrete?
- Steel rebars reinforce concrete by providing additional strength and stability to the structure. When concrete is poured, it is strong in compression but weak in tension. Steel rebars are embedded within the concrete to counterbalance this weakness and enhance its tensile strength. The rebars act as a reinforcement by absorbing the tensile forces that occur when a structure is subjected to bending or stretching. When such forces are applied, the rebars distribute the load across the concrete, preventing cracks and failure. This is crucial in structures such as buildings, bridges, and dams, where the concrete needs to withstand various external forces. The rebars also help to control the expansion and contraction of the concrete due to temperature changes. Since steel has a similar coefficient of thermal expansion as concrete, it helps to minimize the stress that occurs due to temperature fluctuations, reducing the risk of cracking. Moreover, the bond between the steel rebars and the concrete is essential for effective reinforcement. The rough surface of the rebars provides an excellent grip with the surrounding concrete, ensuring that they work together as a composite material. This bond enables the transfer of stress from the concrete to the rebars, enhancing the overall strength and durability of the structure. In summary, steel rebars reinforce concrete by adding tensile strength, distributing loads, controlling temperature-induced stress, and creating a strong bond with the concrete. This combination of concrete and steel creates a reinforced concrete structure that can withstand various external forces and maintain its structural integrity over time.
- Q: How do steel rebars affect the overall structural integrity of a building?
- Steel rebars play a crucial role in enhancing the overall structural integrity of a building. By reinforcing and strengthening concrete structures, rebars effectively distribute loads and resist tension, preventing cracks and structural failures. This reinforcement enables buildings to withstand various forces, such as earthquakes and high winds, ensuring their stability and durability over time.
- Q: What is the effect of moisture on steel rebars?
- The effect of moisture on steel rebars can be significant and can lead to various issues. Moisture can accelerate the corrosion process of steel rebars, causing them to rust and deteriorate over time. This corrosion weakens the structural integrity of the rebars and can lead to structural failures in concrete structures. When steel rebars are exposed to moisture, the water reacts with the iron in the steel, causing an electrochemical reaction known as corrosion. This reaction produces iron oxide or rust, which expands and causes the rebars to crack and spall. As the corrosion progresses, the rebars lose their strength, which can compromise the overall stability of the structure. Moisture can also contribute to the formation of carbonation in concrete, which further increases the risk of corrosion for steel rebars. Carbonation occurs when carbon dioxide from the atmosphere reacts with the calcium hydroxide in concrete, reducing the alkalinity of the concrete. This reduction in alkalinity lowers the passivation of the rebars, making them more susceptible to corrosion. In addition to corrosion, moisture can also lead to other problems such as concrete expansion, freeze-thaw damage, and efflorescence. When moisture enters the concrete and freezes, it expands, causing cracking and spalling. This freeze-thaw cycle can further accelerate the corrosion process of steel rebars. Efflorescence, on the other hand, is the crystalline deposit that forms on the surface of concrete when moisture evaporates and leaves behind salts. This white, powdery substance can degrade the appearance of concrete structures and indicate potential moisture-related issues. To mitigate the effects of moisture on steel rebars, various preventive measures can be taken. These include using corrosion-resistant rebars, applying protective coatings or membranes to the rebars, ensuring proper concrete cover over the rebars, and implementing proper drainage systems to prevent the accumulation of moisture. Regular inspections and maintenance are also crucial to identify and address any moisture-related issues before they escalate and cause structural problems.
- Q: How are steel rebars used in airport runway construction?
- Steel rebars are used in airport runway construction to reinforce and strengthen the concrete pavement. They are placed within the concrete to provide additional support and prevent cracking or shifting of the runway surface under heavy aircraft loads.
- Q: Can steel rebars be used in historical building preservation?
- Yes, steel rebars can be used in historical building preservation. Steel rebars are commonly used to reinforce and strengthen structures, including historical buildings. They provide structural support and help maintain the integrity of the building while preserving its historical significance. However, it is important to ensure that the use of steel rebars is done carefully and in accordance with preservation guidelines to minimize any potential damage or alteration to the historical fabric of the building.
- Q: How do steel rebars contribute to the ductility of a structure?
- Steel rebars contribute to the ductility of a structure by providing reinforcement and increasing its ability to withstand deformation without fracturing. The presence of rebars allows concrete to handle higher tensile forces, preventing brittle failure and enhancing the overall strength and flexibility of the structure.
- Q: Can steel rebars be used in aggressive chemical environments?
- To some extent, aggressive chemical environments can tolerate the use of steel rebars. However, the severity and characteristics of the chemicals present may compromise their performance. In most construction applications, steel rebars are generally resistant to mild to moderate chemical exposures. Nonetheless, in highly aggressive chemical environments with prolonged and intense exposure to corrosive substances like acids, alkalis, or salts, steel rebars may corrode and deteriorate over time. In such instances, alternative materials such as stainless steel rebars or epoxy-coated rebars may be more suitable, as they offer enhanced resistance to corrosion in aggressive chemical environments. It is crucial to consider the specific conditions of the chemical environment and seek guidance from experts or structural engineers to determine the most appropriate rebar material for the given situation. Regular inspections and maintenance are also necessary to monitor the condition of steel rebars and ensure their durability in aggressive chemical environments.
- Q: How do steel rebars improve the load-carrying capacity of concrete?
- Steel rebars improve the load-carrying capacity of concrete through a combination of reinforcement and strength enhancement. When steel rebars are embedded within the concrete, they provide tensile strength to a material that is otherwise weak in tension. This is because concrete is strong in compression but relatively weak in tension. The rebars act as a support system within the concrete, distributing the load more evenly and preventing cracks or failure. When a load is applied to the concrete, the rebars resist the tensile forces and help to hold the concrete together, increasing its ability to carry and distribute the load. Furthermore, steel rebars also enhance the ductility of concrete. Ductility refers to the ability of a material to deform without fracturing. By adding steel rebars, the concrete becomes more flexible and capable of withstanding greater stress and strain without failure. This is particularly important in structures subject to earthquakes, as the ability to absorb and dissipate energy is crucial for their overall integrity. In summary, steel rebars improve the load-carrying capacity of concrete by reinforcing it with tensile strength, distributing the load more evenly, preventing cracks, and enhancing its overall ductility. This combination of reinforcement and strength enhancement significantly increases the structural stability and durability of concrete structures.
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Deformed steel bar 6-40 MM HRB 400 HRB 500
- Loading Port:
- Qingdao
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 600 m.t.
- Supply Capability:
- 19452 m.t./month
OKorder Service Pledge
OKorder Financial Service
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