BS4449-1997 deformed steel bar for construction
- Ref Price:
-
- 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 BS4449-1997 deformed steel bar 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:
BS4449-1997 deformed steel bar 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 bar 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
Product Specifications:
Specifications of Middle Specification Steel Bar
1. Grade: Q235, SS400, A36, S235JR (With Boron)
2. Standard: GB, JIS, ASTM, BS
3. Diameter: 17mm—40mm
4. Length: As customer’s request, but we usually produce 6m and 12m.
5. Steel Grade: Carbon steel
6. Technique: Hot rolled or cold drawn
7. Inspection: SGS; ISO 9001:2000
8. Details about mass
Diameter | Mass | Diameter | Mass |
(mm) | (kg/m) | (mm) | (kg/m) |
17 | 1.78 | 26 | 4.17 |
18 | 2.00 | 28 | 4.83 |
19 | 2.23 | 30 | 5.55 |
20 | 2.47 | 32 | 6.31 |
22 | 2.98 | 34 | 7.13 |
24 | 3.55 | 36 | 7.99 |
25 | 3.85 | 38 | 8.90 |
Usage and Applications of Middle Specification Steel Bar
1. Middle specification steel bar is often used inconstruction and a large number of architectural and engineering structures.
2. And we can use this kind of product on the performance of the mechanical parts if the demand is not very high.
3. Some especial material steel round bar can be used for main shaft of steamer, hummer shank, with big section and supper force.
Packaging & Delivery of Middle Specification Steel Bar
Packaging Detail: All goods are packed in bundle with steel strips and shipped by break bulk vessel or container (depend on target market and different ports)
Delivery Detail: 45 days
Trade terms: FOB, CFR, CIF
MOQ: 25 tons per specification; we can negotiate the quantity if the specification is normal or we have stock of one specification.
Weight: Theprice invoicing on theoretical weight basis or actual weight basis depends on customer’s request.
Shipment: The shipment of bulk break or container is depends on customer’s request and the situation of the port of destination.
Documents given: Full set of original clean on board bill of lading; Original signed commercial invoice; Original packing list; Policy of insurance; Certificate of origin and what the target market needs.
Note: a. FOB Jinzhou can be USD 10 cheaper than FOB Tianjin. b. The risk of the commodity shall be transferred to the buyer from the moment of the commodity be loaded on board.
Production Flow of Middle Specification Steel Bar
We use advanced equipments like Electric Arc Furnace, Ladle Furnace and Vacuum Degasser to produce our products.
Our process is EAF+LF+VD+ Forged+ Heat Treatment
The flow of fabrication is Material prepare (billet) — heat up — rough rolling — precision rolling — cooling — packing — storage and transportation
Quality Assurance of Middle Specification Steel Bar
1. We will strictly inspect our production that we sold according to the customer’s request.
2. Quality should be in conformity with the specification of the manufacturer. Quantity and packing conditions should be in conformity with the term in the contract.
3. Should the packing found damaged, the buyer has the right to claim to the seller.
FAQ:
FAQ:
Q1: Why buy Materials & Equipment from OKorder.com?
A1: All products offered byOKorder.com are carefully selected from China's most reliable manufacturing enterprises. Through its ISO certifications, OKorder.com adheres to the highest standards and a commitment to supply chain safety and customer satisfaction.
Q2: How do we guarantee the quality of our products?
A2: 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.
- Q:What is the role of steel rebars in ensuring occupant safety?
- Steel rebars play a crucial role in ensuring occupant safety in various structures, particularly in buildings and infrastructure. These reinforced steel bars are commonly used in concrete construction to enhance the strength and durability of the structure, ultimately safeguarding the individuals residing or working within them. The primary function of steel rebars is to provide structural reinforcement to concrete elements, such as columns, beams, and slabs. By incorporating rebars into the concrete, the overall load-bearing capacity of the structure is significantly increased, allowing it to withstand various external forces and loads. This greatly reduces the risk of collapse or structural failure, which could potentially harm the occupants. During seismic events, such as earthquakes, steel rebars play a critical role in dissipating and distributing the energy exerted on the structure. The ductility and tensile strength of steel allow it to absorb and distribute the seismic forces, reducing the chances of a sudden structural failure. This ensures that the occupants are protected from the potential hazards associated with seismic activity. Moreover, steel rebars enhance the fire resistance of concrete structures. While concrete itself possesses good fire-resistant properties, the inclusion of steel rebars further reinforces this resistance. Steel has a high melting point, and its thermal conductivity is relatively low compared to other materials. This means that steel rebars can withstand high temperatures for an extended period, ensuring the structural integrity of the building during a fire and providing occupants with a safe evacuation route. In addition to their structural benefits, steel rebars also contribute to the long-term durability and maintenance of the structure. By preventing cracks and minimizing the effects of corrosion, rebars help maintain the structural integrity of the concrete over time. This ensures that the occupants are not exposed to potential hazards caused by the deterioration of the structure. Overall, the role of steel rebars in ensuring occupant safety is indispensable. They provide structural reinforcement, increase load-bearing capacity, enhance fire resistance, and contribute to the long-term durability of a structure. By incorporating steel rebars into concrete construction, the risk of collapse, structural failure, and other potential hazards is significantly reduced, ultimately providing a safe environment for the occupants.
- Q:How do steel rebars contribute to the overall energy efficiency of a building?
- There are multiple ways in which steel rebars contribute to the energy efficiency of a building. Firstly, they are commonly utilized in reinforced concrete structures, which offer excellent thermal mass properties. Thermal mass refers to a material's capacity to absorb, store, and release heat energy. By incorporating steel rebars into concrete walls, floors, and ceilings, the building can effectively regulate interior temperature, thereby reducing the need for additional heating or cooling systems. Furthermore, steel rebars enhance a building's structural integrity and durability, thereby contributing to energy efficiency. Buildings constructed with reinforced concrete using steel rebars are better equipped to withstand external forces like wind or seismic activities. This increased resilience results in reduced maintenance requirements and a longer lifespan, ultimately saving energy and resources over time. Moreover, steel rebars are recyclable materials, meaning they can be processed and reused at the end of their life cycle. The recycling of steel rebars significantly reduces energy consumption and greenhouse gas emissions associated with the production of new steel. By incorporating recycled steel rebars, builders can further improve the energy efficiency of a building and contribute to sustainable construction practices. In conclusion, steel rebars play a critical role in enhancing the overall energy efficiency of a building. Their ability to provide thermal mass, improve structural integrity, and be recycled make them a sustainable and energy-efficient choice for construction projects.
- Q:What are the guidelines for proper splicing of steel rebars in concrete structures?
- The guidelines for proper splicing of steel rebars in concrete structures are essential to ensure the structural integrity and safety of the building. Here are some key guidelines to follow: 1. Length of Lap Splicing: The length of lap splicing refers to the overlapping distance between two rebars. It is crucial to follow the specified length mentioned in the design plans or structural codes. Typically, the minimum lap length for rebars is specified as a certain multiple of their diameter, such as 40 times the diameter for tension members and 25 times the diameter for compression members. 2. Cleanliness: Before splicing the rebars, the surfaces of the bars must be cleaned thoroughly to remove any rust, scale, dirt, or other contaminants. Proper cleaning ensures a strong bond between the bars during the splicing process. 3. Proper Alignment: The rebars being spliced should be properly aligned to maintain the continuity of the reinforcement. Misalignment can lead to stress concentration, weakening the overall structure. The bars should be aligned in a straight line, ensuring that they are parallel and evenly spaced. 4. Splice Type: There are various types of splice connections available, such as lap splicing, mechanical splicing, and welded splicing. The choice of splice type should be based on the specific project requirements, structural design, and local building codes. 5. Reinforcement Bar Preparation: The rebars need to be prepared before splicing by removing any scale, rust, or other contaminants. This can be done through brushing, grinding, or shot blasting. Additionally, the ends of the rebars should be clean and free of any deformations or irregularities. 6. Testing and Inspection: It is crucial to conduct regular testing and inspection to ensure the quality and integrity of the spliced rebars. Non-destructive testing methods, such as ultrasound or magnetic particle testing, can be employed to check the bond strength and ensure the splicing has been done correctly. 7. Adequate Cover: The spliced rebars must have adequate concrete cover to protect them from corrosion and fire. The thickness of concrete cover should comply with the local building codes and design specifications. 8. Proper Grouting: If mechanical splices are used, it is important to ensure proper grouting or filling of the splice sleeve or coupler with an approved non-shrink grout. This helps in achieving full load transfer and prevents any movement or slippage of the rebars. 9. Documentation: All splicing activities should be properly documented, including the type of splice used, lap lengths, inspection reports, and any deviations from the original design. This documentation is important for future reference, maintenance, and to ensure compliance with regulatory agencies. It is important to note that these guidelines are general recommendations, and specific project requirements and local building codes should always be followed for proper splicing of steel rebars in concrete structures. Consulting with a qualified structural engineer or following the advice of a reputable construction professional is crucial to ensure the highest standards of safety and compliance.
- Q:What is the difference between epoxy-coated and galvanized steel rebars?
- Epoxy-coated steel rebars are steel reinforcements that have been coated with a layer of epoxy, which provides protection against corrosion. On the other hand, galvanized steel rebars are steel reinforcements that have been coated with a layer of zinc, offering protection against rust and corrosion. While both coatings provide corrosion resistance, epoxy-coated rebars are more commonly used in environments where they may come into contact with chemicals or saltwater, while galvanized rebars are often used in areas with high humidity or where the rebars may be exposed to moisture.
- Q:How do steel rebars affect the overall thermal expansion of concrete structures?
- Steel rebars can significantly affect the overall thermal expansion of concrete structures. Concrete has a relatively low coefficient of thermal expansion, meaning it expands and contracts less compared to other materials when subjected to temperature changes. On the other hand, steel rebars have a higher coefficient of thermal expansion than concrete. When temperature fluctuations occur, such as during hot or cold weather, the steel rebars expand or contract at a different rate than the surrounding concrete. This difference in thermal expansion rates can lead to internal stresses within the concrete structure. These internal stresses can cause cracking or even structural failures if not properly addressed. To mitigate the effects of thermal expansion, engineers design concrete structures with appropriate reinforcement, including steel rebars. The rebars help to distribute the stresses caused by temperature changes more evenly, reducing the risk of cracking or damage. Additionally, the tensile strength of steel rebars allows them to resist the forces generated by the differential expansion, providing stability to the overall structure. However, it is important to note that steel rebars alone cannot completely eliminate the effects of thermal expansion. Other factors, such as the design of expansion joints and the use of proper construction techniques, also play a crucial role in minimizing the impact of temperature fluctuations on concrete structures.
- Q:How do steel rebars improve the ductility of a structure?
- By reinforcing and resisting tension forces, steel rebars enhance the ductility of a structure. When external loads, like earthquakes or strong winds, are applied to a structure, it undergoes tensile stresses, which can result in cracking and failure. However, the inclusion of steel rebars, typically composed of high-strength steel, in concrete structures improves their capacity to withstand and distribute these forces. The presence of rebars in the concrete boosts its tensile strength, enabling it to withstand deformation and cracking. When the structure faces tension, the rebars bear the majority of the load, preventing the concrete from collapsing. This redistribution of forces leads to increased ductility, which refers to a material's ability to undergo deformation without breaking. Moreover, steel rebars also fortify the structural integrity of a building by hindering the propagation of cracks. As the concrete cracks under tension, the rebars act as a barrier, confining the growth of these cracks and preventing them from spreading throughout the structure. This containment of cracks enhances the overall resilience of the building, minimizing the risk of catastrophic failure. In conclusion, steel rebars are vital in enhancing the ductility of a structure by improving tensile strength, redistributing forces, and limiting crack propagation. By incorporating rebars into concrete, engineers can design and construct structures capable of withstanding various external forces, assuring the safety and longevity of the building.
- Q:How can corrosion of steel rebars be prevented?
- Corrosion of steel rebars can be prevented by applying protective coatings or paints, using corrosion-resistant materials for construction, ensuring proper concrete cover over rebars, maintaining adequate moisture levels in the concrete, avoiding contact with chloride-rich materials, and implementing regular inspections and maintenance to detect and address any signs of corrosion early on.
- Q:Are steel rebars suitable for use in wastewater treatment plants?
- Steel rebars are indeed a suitable option for utilization in wastewater treatment plants. The demanding and corrosive surroundings of these facilities often necessitate reinforced concrete structures. Fortunately, steel rebars, frequently employed for concrete reinforcement, provide the strength and durability required for such constructions. Their resistance to corrosion is particularly advantageous in wastewater treatment plants, where the presence of chemicals and corrosive elements is prevalent. Moreover, steel rebars offer exceptional tensile strength, guaranteeing that the concrete structures can endure substantial loads and pressures. All in all, steel rebars prove to be a dependable and suitable selection for incorporation in wastewater treatment plants, as they ensure the facility's longevity and structural integrity.
- Q:How are steel rebars protected from rusting during storage?
- Steel rebars are protected from rusting during storage by applying a coating of corrosion-resistant material, such as epoxy, zinc, or paint. This protective layer acts as a barrier, preventing moisture and oxygen from coming in contact with the steel surface, thus reducing the risk of rust formation. Additionally, rebars are often stored in dry and controlled environments to minimize exposure to humidity, which further helps to prevent rusting.
- Q:Are there any environmental concerns associated with steel rebars?
- Yes, there are certain environmental concerns associated with steel rebars. The production of steel rebars requires a significant amount of energy and releases greenhouse gases, contributing to climate change. Additionally, the extraction and mining of iron ore for steel production can lead to habitat destruction and water pollution. However, the recycling potential of steel rebars helps mitigate some environmental impacts by reducing the need for virgin steel production and decreasing waste.
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BS4449-1997 deformed steel bar for construction
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT or LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 100000 m.t./month
OKorder Service Pledge
OKorder Financial Service
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