Rebar Steel Prices of China mill HRB400
- Ref Price:
-
- Loading Port:
- Qingdao
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 100 m.t.
- Supply Capability:
- 19000 m.t./month
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Quality Product, Order Online Tracking, Timely Delivery
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Specification
Standard:
AISI,ASTM,JIS
Technique:
Hot Rolled
Shape:
Round
Surface Treatment:
Dry
Steel Grade:
HRB400
Certification:
ISO,SGS
Thickness:
6-38mm
Length:
6m or 12m
Net Weight:
1-2mt
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.
Concrete is a material that is very strong in compression, but virtually without strength in tension. To compensate for this
imbalance in concrete's behavior, rebar is formed into it to carry the tensile loads.
.
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. | ||||||||||
Delivery time | 15-30 days after receipt of L/C or deposit by T/T | ||||||||||
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: How do steel rebars affect the overall longevity of a structure?
- Steel rebars, also known as reinforcement bars, play a crucial role in enhancing the overall longevity of a structure. By providing strength and durability, rebars reinforce the concrete, making it more resistant to cracking and structural failure. This reinforcement ensures that the structure can withstand various external forces, such as extreme weather conditions, seismic activity, and heavy loads. Consequently, the use of steel rebars significantly extends the lifespan of a structure, ensuring its long-term stability and safety.
- Q: How do steel rebars affect the bond strength between concrete and reinforcement?
- Steel rebars have a significant positive impact on the bond strength between concrete and reinforcement. When embedded in concrete, rebars enhance the structural integrity by creating a mechanical bond. The rough texture of rebars provides a larger surface area for the concrete to adhere to, improving the bond strength. This bond is crucial in transferring forces between the two materials, ensuring the reinforced concrete can withstand loads and maintain its stability.
- Q: Can steel rebars be used in extreme weather conditions?
- Yes, steel rebars can be used in extreme weather conditions. Steel is a durable and weather-resistant material that can withstand varying temperatures, humidity, and even harsh weather conditions such as heavy rain, snow, and high winds. It retains its strength and structural integrity, making it suitable for use in extreme weather conditions.
- Q: How do steel rebars contribute to the load-bearing capacity of concrete slabs?
- The load-bearing capacity of concrete slabs is improved through various mechanisms by steel rebars. Firstly, they increase the tensile strength of the concrete. While concrete is renowned for its compressive strength, it lacks the ability to resist tensile forces. By incorporating steel rebars into the concrete, a reinforced structure is formed, capable of withstanding both compressive and tensile stresses. This effectively prevents the concrete from cracking or failing when subjected to heavy loads. Secondly, steel rebars aid in the even distribution of loads across the concrete slab. When a load is applied to the slab, it tends to concentrate at specific points, leading to stress concentrations. However, the presence of rebars facilitates the spreading of the load over a larger area, reducing stress on individual points and enhancing the overall load-bearing capacity of the slab. Additionally, steel rebars serve as a barrier against crack propagation in concrete slabs. If a crack occurs, the rebars act as reinforcement, holding the cracked sections together and preventing the crack from expanding further. This ensures the structural integrity of the slab is maintained, safeguarding its load-bearing capacity. In conclusion, steel rebars are indispensable in bolstering the load-bearing capacity of concrete slabs. They provide tensile strength, ensure even load distribution, and inhibit crack propagation. By incorporating rebars, the durability and ability of concrete structures to withstand heavy loads are significantly improved, making them indispensable components in construction projects.
- Q: How do steel rebars affect the overall fire resistance of concrete structures?
- Steel rebars can significantly improve the fire resistance of concrete structures. The high thermal conductivity of steel helps in dissipating heat away from the concrete, preventing rapid temperature rise and structural failure. Additionally, the presence of rebars enhances the load-bearing capacity of the structure during a fire, enabling it to withstand the intense heat for a longer duration before collapsing.
- Q: What are the common manufacturing processes for steel rebars?
- The common manufacturing processes for steel rebars involve several steps to ensure the production of high-quality and durable reinforcement bars. These processes typically include: 1. Melting: The first step in manufacturing steel rebars is melting the raw materials, which usually consist of iron ore, coal, and limestone, in a blast furnace. This process produces molten iron that is then further refined to remove impurities. 2. Casting: Once the molten iron is refined, it is poured into molds to create large billets or blooms. These molds are often called continuous casting machines, where the molten iron solidifies into a rectangular shape. 3. Rolling: The solidified billets or blooms are then heated and passed through rolling mills. The rolling process involves compressing the steel between a series of rollers to reduce its thickness and shape it into the desired dimensions of rebars. This process also helps improve the mechanical properties and eliminate any internal defects or impurities. 4. Quenching and Tempering: After the initial rolling process, the rebars may undergo quenching and tempering. Quenching involves rapidly cooling the steel bars by immersing them in water or oil. This step increases the hardness of the rebars, making them more resistant to deformation and wear. Tempering follows, which involves reheating the quenched bars to a specific temperature and then cooling them slowly. Tempering helps remove internal stresses and improves the toughness of the rebars. 5. Cutting and Coiling: Once the bars have been rolled and heat-treated, they are cut to the desired lengths using cutting machines. The cut rebars are then coiled into bundles or stacked for storage and transportation. 6. Surface Treatment: To enhance the corrosion resistance of rebars, manufacturers often apply a protective coating or surface treatment. This can involve hot-dip galvanizing, where the rebars are immersed in molten zinc to form a zinc coating, or epoxy coating, where a layer of epoxy resin is applied to the rebars. It is important to note that these manufacturing processes may vary depending on the specific requirements and standards set by different countries and industries. However, the aforementioned steps provide a general overview of the common processes involved in manufacturing steel rebars.
- Q: How do steel rebars affect the crack resistance of concrete structures?
- Steel rebars play a crucial role in enhancing the crack resistance of concrete structures. When incorporated into the concrete, rebars act as reinforcement and provide additional strength to the structure. The primary purpose of steel rebars is to absorb tensile forces that concrete alone cannot withstand. Concrete is excellent at resisting compression forces but is relatively weak when it comes to tension. As a result, when a concrete structure is subjected to tensile stresses, such as those caused by external loads or temperature changes, cracks can form. By placing steel rebars within the concrete, the structure gains the ability to resist these tension forces. When the concrete experiences tensile stresses, the rebars bear the load and distribute it throughout the structure, preventing the formation and propagation of cracks. The rebars effectively bridge the gaps in the concrete, reinforcing it and increasing its overall strength. Moreover, steel rebars also help to control the size and width of cracks that do occur. By limiting the width and propagation of cracks, the rebars prevent them from becoming larger and compromising the structure's integrity. This is especially important in situations where the structure is exposed to excessive forces or environmental conditions that can induce cracking. Additionally, steel rebars also improve the durability of concrete structures by increasing their resistance to corrosion. Concrete is porous, and over time, water and other corrosive substances can penetrate and deteriorate the material. However, when rebars are used, they are typically encased in a protective layer of concrete, known as the cover. This cover acts as a barrier, preventing the penetration of corrosive agents and protecting the rebars from corrosion. This, in turn, ensures the long-term durability and crack resistance of the concrete structure. In summary, steel rebars significantly enhance the crack resistance of concrete structures by providing reinforcement and absorbing tensile forces. They prevent the formation and propagation of cracks, control their size and width, and increase the overall strength and durability of the structure.
- Q: What is the role of steel rebars in ensuring structural stability?
- In various construction projects, steel rebars are essential for maintaining structural stability. These reinforced bars are primarily utilized to strengthen concrete structures, like buildings, bridges, and highways, by providing additional tensile strength. Concrete is a highly versatile material capable of effectively withstanding compressive forces. However, its resistance to tensile forces is limited. This is where steel rebars come into play. By reinforcing concrete with steel rebars, the resulting composite material can effectively resist both compressive and tensile forces, thereby enhancing its overall structural stability. Under loads such as the weight of the structure or external forces like wind or seismic activity, concrete experiences tensile stresses. Without reinforcement, these tensile stresses can lead to cracks and ultimately result in structural failure. Thanks to their high ductility and tensile strength, steel rebars can absorb and distribute these tensile forces throughout the structure. To ensure optimal reinforcement, the placement and arrangement of steel rebars are carefully designed. Typically, they are embedded within the concrete in a grid-like pattern, forming a reinforced concrete matrix. This matrix strengthens the structure and prevents cracks from propagating, thereby effectively increasing its load-bearing capacity and durability. Furthermore, steel rebars also play a crucial role in maintaining the structural integrity of concrete structures over time. They help combat the effects of shrinkage, expansion, and temperature fluctuations that can lead to cracking. By providing a strong and flexible reinforcement system, steel rebars minimize the risks of structural damage and ensure the long-term stability of the construction. In summary, the role of steel rebars in ensuring structural stability can be summarized as follows: increasing the tensile strength of concrete, preventing cracks and structural failure, enhancing load-bearing capacity, and promoting long-term durability. By reinforcing concrete structures with steel rebars, engineers can create resilient and safe constructions capable of withstanding various forces and maintaining their integrity for decades.
- Q: What are the advantages of using ribbed steel rebars?
- There are several advantages to using ribbed steel rebars in construction projects. Firstly, the ribbed design of these rebars provides enhanced bonding with concrete. The ribs increase the surface area of contact between the rebar and the surrounding concrete, improving the adhesion and preventing slippage. This leads to a stronger bond, ensuring the structural integrity of the reinforced concrete. Secondly, ribbed steel rebars offer improved resistance to shear forces. The ribs act as anchor points within the concrete, distributing the load more evenly and reducing the chances of failure due to shear stress. This makes ribbed rebars ideal for applications that experience high shear forces, such as beams and columns. Additionally, the ribbed pattern of these rebars enhances their ductility. Ductility is the ability of a material to undergo deformation without breaking. The presence of ribs allows the steel rebar to stretch and bend without fracturing, making it more resistant to cracking or failure under stress. This is especially crucial in earthquake-prone areas, where the ability of a structure to absorb and dissipate energy is essential for its survival. Furthermore, ribbed steel rebars have excellent corrosion resistance. The ribs create a barrier that prevents moisture and corrosive agents from reaching the steel core. This significantly extends the lifespan of the rebar, reducing maintenance costs and ensuring the long-term durability of the reinforced concrete structure. Lastly, ribbed steel rebars are readily available and cost-effective. They are manufactured in various sizes and lengths, allowing for easy customization to suit different construction needs. Moreover, due to their popularity and widespread use, ribbed rebars are competitively priced, making them a cost-effective option for reinforcing concrete structures. In conclusion, the advantages of using ribbed steel rebars include improved bonding with concrete, enhanced resistance to shear forces, greater ductility, excellent corrosion resistance, and cost-effectiveness. These benefits make ribbed rebars an ideal choice for reinforcing concrete structures, providing strength, durability, and longevity to the construction projects.
- Q: How do steel rebars affect the shrinkage and creep behavior of concrete?
- Steel rebars can significantly affect the shrinkage and creep behavior of concrete. Shrinkage refers to the contraction of concrete as it dries and hardens, while creep refers to the long-term deformation of concrete under sustained load. The presence of steel rebars in concrete can reduce the overall shrinkage of the concrete due to two main reasons. Firstly, the steel rebars provide a restraint against shrinkage by resisting the tensile forces that develop during drying. This restraint reduces the overall volume change of the concrete, minimizing the shrinkage. Secondly, the rebars also act as a barrier to moisture movement, limiting the drying and shrinkage of the concrete. However, the addition of steel rebars can also influence the creep behavior of concrete. Creep is influenced by the modulus of elasticity and the strength of the material, and the presence of steel rebars can alter these properties. The high modulus of elasticity and strength of steel rebars can cause the concrete to experience higher levels of creep due to the differential deformation between the concrete and the steel. Moreover, the bond between the rebars and the concrete also plays a role in affecting the creep behavior. The bond strength between the rebars and the concrete can influence the transfer of stress from the concrete to the rebars, affecting the overall creep behavior of the composite material. In summary, steel rebars can reduce the shrinkage of concrete by providing restraint against drying and minimizing moisture movement. However, they can also influence the creep behavior of concrete due to their modulus of elasticity, strength, and the bond between the rebars and the concrete. Understanding the interaction between steel rebars and concrete is crucial in designing structures that can withstand shrinkage and creep effects.
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Rebar Steel Prices of China mill HRB400
- Ref Price:
-
- Loading Port:
- Qingdao
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 100 m.t.
- Supply Capability:
- 19000 m.t./month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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