Iron bar from China steel mill 6-50 mm for building
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 1000 m.t.
- Supply Capability:
- 19863 m.t./month
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Specification
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
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: Are there any limitations on the maximum number of steel rebars that can be used in a concrete element?
- Yes, there are limitations on the maximum number of steel rebars that can be used in a concrete element. These limitations are usually specified by building codes, structural design standards, and engineering principles. The maximum number of rebars is determined by factors such as the size and dimensions of the concrete element, the load it needs to support, and the required spacing and arrangement of rebars to ensure proper reinforcement and structural integrity.
- Q: How long do steel rebars typically last in construction?
- Steel rebars typically last for the entire lifespan of a structure, which is typically several decades or even longer.
- Q: Are there any limitations on the use of steel rebars in flexural members?
- Yes, there are some limitations on the use of steel rebars in flexural members. One of the main limitations is related to the size and spacing of rebars. The design codes specify certain minimum and maximum sizes and spacing requirements to ensure proper reinforcement and prevent issues such as cracking or excessive deflection. Additionally, the type and grade of steel used for rebars must also comply with specified standards to ensure structural integrity and durability.
- Q: How do steel rebars affect the maintenance requirements of a structure?
- Steel rebars, also known as reinforcing bars, play a significant role in the maintenance requirements of a structure. These bars, made of steel, are embedded within concrete to provide strength and durability to the structure. One of the primary ways steel rebars affect maintenance is by enhancing the overall structural integrity of a building or infrastructure. The presence of rebars significantly increases the load-bearing capacity of concrete, allowing it to withstand external forces such as wind, earthquakes, and heavy loads. This reinforcement helps prevent cracks, deformations, and structural failures, ultimately reducing the maintenance needs of a structure. Furthermore, steel rebars also contribute to the longevity of a structure. By providing tensile strength to concrete, they protect it from the 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. Consequently, the maintenance requirements are reduced as the structure remains intact and resilient against environmental factors. However, it is important to note that steel rebars can also influence maintenance requirements in certain circumstances. If the rebars are not properly designed, installed, or protected, they can be susceptible 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. Thus, 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 positively impact the maintenance requirements of a structure by enhancing its strength, durability, and longevity. They reduce 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: What are the factors that affect the durability of steel rebars in concrete?
- There are several factors that affect the durability of steel rebars in concrete. These include the quality of the steel used, the concrete mix design, the level of exposure to environmental conditions, the presence of moisture and chemicals, and the degree of corrosion protection provided. Other factors such as construction techniques, design considerations, and maintenance practices also play a role in determining the durability of steel rebars in concrete structures.
- Q: How are steel rebars spliced or connected in construction joints?
- Various methods are used to splice or connect steel rebars in construction joints, ensuring the integrity and strength of reinforced concrete. A common method is lap splicing, where rebars are overlapped and then mechanically connected or tied together with steel wires or couplers. The required overlap length for lap splicing depends on the rebar diameter and design specifications, often specified as a multiple of the diameter. This length guarantees efficient load transfer and prevents potential failures at the connection point. Mechanical couplers offer an alternative method for splicing rebars. These pre-fabricated devices securely connect two rebars, eliminating the need for lap splicing and providing a more precise and reliable connection. Mechanical couplers are particularly useful when dealing with larger rebar sizes or when long lap lengths are not feasible. In certain cases, welded splicing may be used. This method involves welding the ends of rebars together, creating a solid and continuous connection. Welded splicing is commonly employed when dealing with larger diameter rebars and higher load requirements. However, it is crucial to adhere to proper welding techniques and practices to maintain the connection's integrity. Overall, the splicing or connection of steel rebars in construction joints is a crucial aspect of reinforced concrete construction. It ensures that rebars function as continuous reinforcement, enabling structures to effectively resist applied loads. The choice of splicing method depends on factors such as rebar size, design specifications, and project requirements.
- Q: How do steel rebars affect the overall durability of concrete?
- Concrete structures benefit greatly from the presence of steel rebars, as they significantly contribute to their overall durability. Steel rebars enhance the strength of concrete and its ability to resist external forces and environmental conditions. One of the main functions of steel rebars is to provide tensile strength to concrete, which is naturally weak in resisting tension. Concrete is known for its excellent compressive strength but tends to crack under tension. By embedding steel rebars within the concrete, these cracks are effectively controlled and prevented from expanding, ultimately improving the durability of the structure. Steel rebars also increase the flexural strength of concrete, allowing it to withstand bending and deformations more effectively. This is particularly important in structures such as beams, columns, and slabs that experience significant loads and forces throughout their lifespan. Furthermore, steel rebars act as reinforcement in concrete, enhancing its resistance to external factors like earthquakes, wind, and impact loads. The presence of rebars helps distribute and dissipate these forces throughout the structure, reducing the risk of structural failure and increasing overall durability. Another crucial aspect is the prevention of corrosion in reinforced concrete structures. Steel rebars are typically coated with materials that protect them from corrosion caused by moisture and chemical reactions. This protective coating, combined with the alkaline environment of concrete, forms a barrier that significantly slows down the corrosion process, ultimately increasing the longevity and durability of the concrete structure. To conclude, steel rebars play a vital role in enhancing the overall durability of concrete structures. They provide necessary tensile strength, improve flexural strength, enhance resistance to external forces, and prevent corrosion. Incorporating steel rebars makes concrete more robust, long-lasting, and capable of withstanding various challenges, ensuring the longevity and safety of the structure.
- Q: How are steel rebars checked for proper alignment during construction?
- Steel rebars are checked for proper alignment during construction using various methods such as visual inspection, measuring tape, and laser alignment tools. The rebars are visually inspected by construction workers to ensure they are placed in the correct position and orientation. Additionally, a measuring tape is used to verify the dimensions and distances between rebars as per the construction drawings. In some cases, laser alignment tools are employed to ensure the rebars are perfectly aligned and meet the required specifications.
- Q: What are the guidelines for splicing steel rebars in a structure?
- The guidelines for splicing steel rebars in a structure typically involve following the specifications and recommendations provided by the relevant building codes, engineering standards, and design plans. These guidelines may include requirements for the type and length of splice used, proper alignment and placement of rebars, minimum lap lengths, adequate reinforcement cover, and approved splicing methods such as mechanical or welding. It is crucial to consult with a structural engineer or a qualified professional to ensure compliance with the specific project requirements and to guarantee the structural integrity and safety of the building.
- Q: Are there any environmental concerns related to the production of steel rebars?
- Yes, there are several environmental concerns related to the production of steel rebars. One major concern is the high carbon emissions associated with the steel production process, which contributes to climate change. Additionally, the extraction and processing of raw materials for steel rebars, such as iron ore and coal, can lead to deforestation, habitat destruction, and air and water pollution. Proper waste management and recycling of steel scrap are also important considerations to minimize the environmental impact of steel rebar production.
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Iron bar from China steel mill 6-50 mm for building
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 1000 m.t.
- Supply Capability:
- 19863 m.t./month
OKorder Service Pledge
OKorder Financial Service
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