Hot rolled deformed steel bars for construction

Hot rolled deformed steel bars for construction System 1

Hot rolled deformed steel bars for construction

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Loading Port:: Tianjin

Payment Terms:: TT or LC

Min Order Qty:: 25 m.t.

Supply Capability:: 100000 m.t./month

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Product Description:

OKorder is offering Hot rolled deformed steel bars for construction at great prices with worldwide shipping. Our supplier is a world-class manufacturer of steel, with our products utilized the world over. OKorder annually supplies products to European, North American and Asian markets. We provide quotations within 24 hours of receiving an inquiry and guarantee competitive prices.

Product Applications:

Hot rolled deformed steel bars are ideal for structural applications and are widely used in the construction of buildings and bridges, and the manufacturing, petrochemical, and transportation industries.

Product Advantages:

OKorder's deformed steel bars are durable, strong, and resist corrosion.

Main Product Features:

· Premium quality

· Prompt delivery & seaworthy packing (30 days after receiving deposit)

· Corrosion resistance

· Can be recycled and reused

· Mill test certification

· Professional Service

· Competitive pricing

Deformed bar is widely used in buildings, bridges, roads and other engineering construction. Big to highways, railways, bridges, culverts, tunnels, public facilities such as flood control, dam, small to housing construction, beam, column, wall and the foundation of the plate, deformed bar is an integral structure material. With the development of world economy and the vigorous development of infrastructure construction, real estate, the demand for deformed bar will be larger and larger..

Packaging & Delivery of HRB400 Deformed Steel Bar:

Packaging Detail: products are packed in bundle and then shipped by container or bulk vessel, deformed bar is usually naked strapping delivery, when storing, please pay attention to moisture proof. The performance of rust will produce adverse effect.

Each bundle weight: 2-3MT, or as required

Payment term: TT or L/C

Delivery Detail: within 45 days after received advanced payment or LC.

Label: to be specified by customer, generally, each bundle has 1-2 labels

Trade terms: FOB, CFR, CIF

Deformed Steel Bar in container

Hot rolled deformed steel bars for construction

Deformed Steel Bar in factory

Hot rolled deformed steel bars for construction

Note:

1. Our products are produced according to national standard (GB), if not, supply according to national standards (GB) or agreement as customer required.

2. Other Grade and Standard Deformed Steel Bar we can supply:

Grade: GR40/GR60, G460B/B500A/B500B/B500C,BST500S

Standard: ASTM, BS, DIN

The Minimum Order Quantity of these products is high, and need to be confirmed.

3. We can not only supply Deformed Steel Bar; if you need anything about building materials, please contact us for further information.

4. Please send us your detail specifications when inquire. We will reply to you as soon as possible. We sincerely hope we can establish a long stable business relationship.

FAQ:

Q1: How do we guarantee the quality of our products?

A1: We have established an advanced quality management system which conducts strict quality tests at every step, from raw materials to the final product. At the same time, we provide extensive follow-up service assurances as required.

Q2: How soon can we receive the product after purchase?

A2: Within three days of placing an order, we will begin production. The specific shipping date is dependent upon international and government factors, but is typically 7 to 10 workdays.

Q: What are the guidelines for the proper spacing of steel rebars in slabs-on-grade?: To ensure the structural integrity and longevity of the concrete slab, it is crucial to follow guidelines for spacing steel rebars in slabs-on-grade. Here are the general guidelines to be followed: 1. Concrete cover: The first consideration is the distance between the rebar surface and the concrete edge, known as the concrete cover. Local building codes or engineering standards typically specify the minimum cover requirements, which must be strictly adhered to. This cover protects the rebar from corrosion and provides fire resistance. 2. Rebar spacing: The spacing between rebars depends on the load requirements and slab dimensions. A closer spacing results in a stronger slab. However, it is necessary to maintain proper spacing to allow free flow of concrete around the rebar during pouring and ensure proper consolidation. Generally, the spacing should not exceed three times the slab thickness or 18 inches, whichever is smaller. 3. Rebar size and diameter: The selection of rebar size and diameter depends on the load requirements and design specifications. Larger loads require larger diameter rebars with increased spacing. Common rebar sizes for slabs-on-grade range from #3 (3/8 inch diameter) to #8 (1 inch diameter). 4. Rebar placement: Proper placement of rebars within the slab is critical. The rebars should be positioned at the center of the slab's thickness to ensure even load distribution. Moreover, they should be securely tied or supported to prevent displacement during concrete placement and consolidation. 5. Joint reinforcement: Construction joints are often included in slabs-on-grade to accommodate expansion and contraction. Proper reinforcement of these joints is essential for maintaining structural integrity. Joint reinforcement, such as dowel bars or tie bars, should be placed perpendicular to the joint and adequately anchored on both sides. It is important to note that these guidelines provide a general overview, and specific project requirements may vary. Consulting a structural engineer or following local building codes and industry standards is essential to ensure compliance and optimize the design of steel rebars in slabs-on-grade.

Q: How do steel rebars affect the overall cost-effectiveness of a structure?: The overall cost-effectiveness of a structure is greatly improved by the presence of steel rebars. These reinforcement bars are extensively used in construction projects to provide concrete structures with strength, durability, and stability. By incorporating steel rebars, the lifespan of a structure is significantly extended, resulting in reduced requirements for frequent repairs and maintenance, ultimately lowering long-term expenses. One of the main advantages of using steel rebars is their ability to reinforce concrete, enabling it to withstand heavy loads and forces. This reinforcement prevents cracks and structural failures, ensuring the long-lasting nature of the structure. Consequently, the need for expensive repairs and replacements is minimized, resulting in cost savings over the structure's lifetime. Furthermore, steel rebars enhance the overall structural integrity of a building, reducing the risk of damage caused by natural disasters such as earthquakes and high winds. This increased resilience not only saves lives but also reduces the financial burden of rebuilding or repairing a damaged structure. In addition to their strength and durability, steel rebars provide cost-effectiveness during the construction phase itself. These bars can be prefabricated off-site, allowing for efficient and streamlined construction processes. This reduces labor costs, accelerates construction timelines, and minimizes material wastage, leading to overall cost savings. Moreover, steel rebars can be recycled, making them an environmentally friendly choice. The recycling process not only reduces the demand for raw materials but also lowers production costs, contributing to the cost-effectiveness of a structure. In conclusion, steel rebars enhance the cost-effectiveness of a structure by increasing its lifespan, reducing maintenance and repair costs, improving resilience to natural disasters, optimizing construction processes, and promoting environmental sustainability. By incorporating steel rebars into construction projects, developers and owners can maximize the return on investment while ensuring the safety and longevity of the structure.

Q: What are the common problems associated with steel rebars in concrete structures?: Some common problems associated with steel rebars in concrete structures include corrosion, inadequate cover, improper placement, and improper anchorage. One of the most significant issues is corrosion. Steel rebars are susceptible to corrosion when exposed to moisture and oxygen, especially in harsh environments such as coastal areas or regions with high humidity. Corrosion can weaken the rebars, leading to structural deterioration and reduced load-bearing capacity of the concrete structure. Another problem is inadequate cover, which refers to insufficient concrete cover over the rebars. Inadequate cover can occur due to poor construction practices or design errors. When rebars are not adequately covered, they are more prone to corrosion as they are exposed to external elements. Additionally, inadequate cover can compromise the structural integrity of the concrete, especially in terms of fire resistance and durability. Improper placement of rebars can also cause problems in concrete structures. If rebars are not properly aligned or spaced according to the design specifications, it can result in weak sections within the concrete. This can lead to uneven load distribution and potential structural failure. Improper placement can also hinder the effectiveness of rebars in reinforcing the concrete, compromising the overall strength of the structure. Improper anchorage of rebars is another common problem. Adequate anchorage is crucial to ensure that the rebars effectively transfer the load between different sections of the concrete structure. If the rebars are not properly anchored, they may slip or pull out under stress, reducing the structural strength and stability of the concrete. To mitigate these problems, it is essential to follow proper construction practices and adhere to design specifications. This includes ensuring proper concrete cover, correct placement and alignment of rebars, adequate anchorage, and using corrosion-resistant rebars or protective coatings in corrosive environments. Regular inspections and maintenance are also necessary to detect and address any potential issues with steel rebars in concrete structures.

Q: How do steel rebars affect the overall lifespan of bridge structures?: Steel rebars play a crucial role in enhancing the overall lifespan of bridge structures. By providing reinforcement and strength to the concrete, rebars help to distribute the load and increase the structural integrity of the bridge. Firstly, steel rebars are used to reinforce the concrete components of the bridge, such as beams, columns, and slabs. This reinforcement prevents the formation of cracks and minimizes the risk of structural failure. The rebars act as a support system, enabling the concrete to withstand heavy loads, vibrations, and external forces, such as wind and earthquakes. This reinforcement helps to maintain the structural stability of the bridge throughout its lifespan. Moreover, steel rebars also resist corrosion, which is a major concern for bridge structures exposed to harsh environmental conditions, such as saltwater or high humidity. Corrosion of the reinforcing bars can lead to the degradation of the concrete and weaken the entire structure. However, steel rebars are typically coated with protective materials or made from corrosion-resistant alloys, which significantly reduces the risk of corrosion and extends the lifespan of the bridge. Furthermore, steel rebars allow for flexibility and adaptability in bridge design and construction. They can be easily bent, shaped, and positioned to meet the specific structural requirements of the bridge. This flexibility enables engineers to design bridges with different shapes, spans, and load capacities, enhancing their overall durability and lifespan. In conclusion, steel rebars have a substantial impact on the overall lifespan of bridge structures. By reinforcing the concrete, resisting corrosion, and providing flexibility in design and construction, steel rebars significantly enhance the structural integrity and durability of bridges, ensuring their safe and long-lasting operation.

Q: How do steel rebars prevent corrosion in concrete structures?: Passivation is a crucial process in preventing corrosion in concrete structures, and steel rebars are the key components responsible for this. By forming a thin oxide layer on their surface, the rebars act as a barrier against corrosion-causing agents. When embedded in concrete, steel rebars benefit from the alkaline environment created by the cement paste, which aids in passivation. The concrete's high pH level prompts the formation of a protective layer of iron oxide, effectively shielding the rebars from moisture and oxygen. Moreover, well-constructed concrete possesses a dense and impermeable nature that restricts the movement of water and other corrosive substances towards the rebars. Consequently, the likelihood of corrosion initiation and progression is significantly reduced. In addition to the alkaline environment and concrete's impermeability, steel rebars are commonly coated with epoxy or zinc, providing an extra layer of protection. These coatings enhance the steel's resistance to corrosion, especially in aggressive environments like marine or chloride-rich conditions. To ensure the long-term prevention of corrosion in concrete structures, regular maintenance and preventive measures are essential. Proper concrete cover over the rebars and the avoidance of excessive moisture or chloride ions are crucial factors in this regard.

Q: Are steel rebars suitable for reinforcement in tunnels?: Yes, steel rebars are suitable for reinforcement in tunnels. Steel rebars have high tensile strength and provide excellent structural support, making them an ideal choice for reinforcing concrete in tunnels. They help enhance the structural integrity and durability of the tunnel, ensuring it can withstand the loads and stresses it will be subjected to during its lifespan.

Q: What is the role of steel rebars in reducing concrete shrinkage?: Steel rebars play a crucial role in reducing concrete shrinkage by providing reinforcement and controlling cracking. When embedded within the concrete, rebars help distribute stress and prevent the formation of large cracks. This reinforcement enhances the structural integrity of the concrete and minimizes shrinkage, leading to a more durable and stable construction material.

Q: What is the role of steel rebars in load-bearing structures?: The role of steel rebars in load-bearing structures is of utmost importance and has multiple aspects. In load-bearing structures like buildings, bridges, dams, and other infrastructure projects, steel rebars, also known as reinforcing bars, are used to reinforce and strengthen concrete structures. They are typically made from carbon steel and strategically positioned within the concrete to counteract its low tensile strength and enhance its ability to withstand tension and compression forces. Steel rebars serve several key functions in load-bearing structures: 1. Reinforcement: Concrete has excellent compressive strength but lacks tensile strength. Steel rebars are embedded in the concrete to absorb tensile forces and prevent the formation or propagation of cracks. By reinforcing the concrete, they help distribute and manage loads more effectively, ensuring the structural integrity and durability of the building. 2. Load distribution: Steel rebars help distribute the weight and load-bearing capacity of the structure more evenly. They assist in transferring applied loads, such as the weight of the structure itself, live loads, or environmental forces, to the foundation or other supporting components. This redistribution of forces prevents localized damage and ensures the structure can handle various external and internal loads. 3. Flexibility and ductility: Steel rebars provide flexibility and ductility to the concrete. This means that even when the structure is subjected to heavy loads, vibrations, or external forces, the rebars can absorb and distribute stress across the structure, minimizing the risk of failure. Steel rebars are particularly effective in earthquake-prone areas, where they help absorb and dissipate seismic energy. 4. Longevity and durability: By reinforcing the concrete, steel rebars significantly increase the longevity and durability of load-bearing structures. They help prevent cracking, shifting, and other structural issues that may arise due to aging, environmental factors, or excessive loading. This extended lifespan ensures the safety and stability of the structure over time. In conclusion, steel rebars play a vital role in load-bearing structures by providing reinforcement, enhancing load distribution, increasing flexibility, and improving the longevity and durability of the structure. Including steel rebars allows for the construction of safer, stronger, and more resilient buildings and infrastructure projects.

Q: Are steel rebars subject to any international standards or regulations?: Yes, steel rebars are subject to international standards and regulations. The most widely recognized standard for steel rebars is the ASTM A615/A615M-20, which provides specifications for deformed and plain carbon-steel bars for concrete reinforcement. Additionally, various countries and regions may have their own specific standards and regulations regarding the production, testing, and use of steel rebars to ensure their quality and performance in construction projects.

Q: Can steel rebars be used in structures with limited construction expertise?: Although limited construction expertise is sufficient for using steel rebars in structures, it is crucial to adhere to proper guidelines and possess a fundamental understanding of construction principles. Rebars are commonly employed to enhance the strength and durability of concrete structures. However, their accurate placement and installation play a pivotal role in guaranteeing the structural integrity of the building. While it is feasible to utilize steel rebars without extensive construction expertise, it is highly advisable to seek guidance from a professional engineer or a qualified construction expert. They can offer valuable insights regarding the suitable positioning, size, and spacing of rebars, as well as the necessary concrete mix design and curing techniques. Furthermore, it is essential to comply with local building codes and regulations, as they stipulate the minimum standards for structural safety. These codes frequently include specific requirements for the utilization of rebars in construction. By adhering to these guidelines and seeking professional advice, even individuals with limited construction expertise can effectively employ steel rebars and ensure the structural stability of their buildings.

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