Steel Rebar KS Standard SD400

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Loading Port:: China Main Port

Payment Terms:: TT or LC

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Product Description:

OKorder is offering Steel Rebar KS Standard SD400 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 African, South American and Asian markets. We provide quotations within 24 hours of receiving an inquiry and guarantee competitive prices.

Product Applications:

Steel Rebar KS Standard SD400 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 Steel Rebar KS Standard SD400 are durable, strong, and wide variety of sizes.

Main Product Features:

· Premium quality

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

· Can be recycled and reused

· Mill test certification

· Professional Service

· Competitive pricing

Product Specifications:

Manufacture: Hot rolled

Grade: SD400,SD500

Size: 6mm-32mm

Certificates: ISO, SGS, BV, CIQ

Length: 6m – 12m, as per customer request

Packaging: Export packing, nude packing, bundled

DEFORMED BAR
SIZE d(mm)	theoretical kg/m
6	0.222
8	0.395
10	0.617
12	0.888
14	1.21
16	1.58
18	2
20	2.47
22	2.98
25	3.85
28	4.83
32	6.31

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 soon can we receive the product after purchase?

A2: Within three days of placing an order, we will arrange production. The normal sizes with the normal grade can be produced within one month. The specific shipping date is dependent upon international and government factors, the delivery to international main port about 45-60days.

Q3: what is the difference between actual weight and theoretical weight?

A3: All the section steel has two weights: actual weight and theoretical weight. Actual weight is the weighing out when the product delivered from the mill. Theoretical weight is calculated by pieces. The invoice can be based on each of them as your request.

Images:

Steel Rebar KS Standard SD400

Q: What is the role of steel rebars in preventing cracks in concrete?: The role of steel rebars in preventing cracks in concrete is to provide reinforcement and strength to the structure. As concrete is strong in compression but weak in tension, the addition of steel rebars helps to distribute the tensile forces and resist cracking. The rebars act as a framework within the concrete, absorbing and dispersing the tension caused by external forces, such as loads or temperature changes. This reinforcement helps to increase the overall durability and structural integrity of the concrete, reducing the likelihood of cracks forming and ensuring the longevity of the construction.

Q: What are the different types of steel rebars used in earthquake-prone regions?: Various types of steel rebars are utilized in earthquake-prone regions to bolster the structural integrity and resilience of buildings. These rebars are specifically engineered to withstand the formidable forces generated during seismic events, thereby mitigating the risk of structural failure. The commonly employed steel rebars in earthquake-prone regions encompass the following: 1. Mild Steel Rebars (MSR): Also known as carbon steel rebars, MSR rebars are the most frequently utilized due to their affordability and widespread availability. They possess a relatively low yield strength, typically ranging from 250 to 420 megapascals (MPa). While they provide basic reinforcement, they are not specifically designed to endure intense seismic forces. 2. High-Strength Deformed Bars (HSD): HSD rebars exhibit significantly higher yield strength compared to MSR rebars, typically ranging from 415 to 600 MPa. Manufactured through subjecting carbon steel to additional heat treatment and controlled cooling, HSD rebars demonstrate improved strength and ductility. They possess enhanced resistance against seismic forces and are commonly employed in earthquake-prone regions. 3. Stainless Steel Rebars (SSR): SSR rebars exhibit remarkable resistance to corrosion and possess excellent strength characteristics. They are commonly employed in coastal earthquake-prone regions where exposure to saltwater or corrosive environments is a concern. SSR rebars offer enhanced durability and longevity, thereby reducing the risk of structural damage caused by corrosion over time. 4. Fiberglass Rebars: Also known as FRP (fiber-reinforced polymer) rebars, fiberglass rebars represent non-metallic alternatives for reinforcement that are gaining popularity in earthquake-prone regions. Composed of glass fibers embedded in a polymer resin matrix, FRP rebars demonstrate excellent resistance to corrosion, rendering them suitable for coastal regions. Although they possess lower strength compared to steel rebars, FRP rebars exhibit high tensile strength, making them a viable option for seismic reinforcement. 5. Galvanized Rebars: Galvanized rebars encompass carbon steel rebars coated with a layer of zinc to enhance corrosion resistance. The zinc coating acts as a sacrificial layer, affording protection to the underlying steel against corrosion. While galvanized rebars are not specifically engineered for seismic resistance, they offer improved durability in earthquake-prone regions characterized by high moisture or corrosive conditions. It is important to highlight that the selection of steel rebars in earthquake-prone regions hinges upon a multitude of factors, including seismic activity levels, building codes and regulations, budgetary constraints, and specific project requirements. Consulting with structural engineers and adhering to local building codes is crucial in determining the appropriate type of steel rebars for seismic reinforcement, thereby ensuring the safety and resilience of structures in these regions.

Q: How are steel rebars stored on-site?: Steel rebars are typically stored on-site in designated areas that are specifically designed for rebar storage. These areas are usually flat and well-drained, ensuring that the rebars remain clean and free from rust or damage. The rebars are often stacked horizontally, with spacers placed between each layer to maintain proper alignment and prevent tangling. Additionally, rebars may be covered with tarps or plastic sheets to protect them from moisture and other environmental factors. Overall, proper storage of steel rebars on-site is crucial to maintain their quality and ensure their structural integrity.

Q: What are the factors that affect the cost of steel rebars?: There are several factors that affect the cost of steel rebars. These include the price of raw materials such as iron ore and scrap metal, as well as the cost of energy and transportation. Additionally, market demand and supply, currency exchange rates, and government regulations can also impact the cost of steel rebars.

Q: Are there any alternative materials to steel rebars for reinforcement?: Indeed, there exists a variety of alternative materials for reinforcement instead of steel rebars. One such material is FRP rebars, which consist of high-strength fibers like carbon, glass, or aramid embedded in a polymer matrix. These FRP rebars possess numerous advantages over steel rebars, such as a high strength-to-weight ratio, resistance to corrosion, and electromagnetic neutrality. They prove particularly valuable in situations where corrosion is a concern, such as marine environments or structures exposed to chemicals. Another alternative material is basalt rebars, which are formed by reinforcing basalt fiber with a polymer matrix. Similar to FRP rebars, basalt rebars offer advantages like a high strength-to-weight ratio and corrosion resistance. Additionally, they are non-conductive and non-magnetic, making them suitable for applications where electromagnetic neutrality is crucial, like in MRI facilities or near power lines. Besides FRP and basalt rebars, other alternative reinforcement materials include bamboo, timber, and composites made from natural fibers such as hemp or flax. These materials are commonly employed in sustainable construction practices or in regions where they are more easily accessible compared to traditional steel rebars. While they may not possess the same level of strength as steel, they can still provide adequate reinforcement for specific applications and offer other benefits like low environmental impact or ease of handling and installation. In conclusion, the availability of alternative materials to steel rebars provides engineers and architects with a range of options to select from based on their project's specific requirements, including factors such as strength, durability, cost, and sustainability.

Q: Can steel rebars be used in the construction of power plants or industrial facilities?: Yes, steel rebars can be used in the construction of power plants or industrial facilities. Steel rebars are extremely strong and durable, making them an ideal choice for reinforcing concrete structures in these types of facilities. They provide the necessary strength and support to withstand heavy loads, vibrations, and extreme temperatures that are often encountered in power plants and industrial facilities. Additionally, steel rebars are resistant to corrosion, which is crucial in these environments where exposure to moisture, chemicals, and other harsh elements is common. Therefore, steel rebars are commonly used in the construction of power plants and industrial facilities to ensure the structural integrity and longevity of the buildings.

Q: How do steel rebars contribute to the overall stability of a bridge deck?: Steel rebars contribute to the overall stability of a bridge deck by providing strength and support to the concrete structure. These reinforced bars act as tension members, helping to resist bending and cracking of the bridge deck. By reinforcing the concrete, steel rebars enhance the bridge's ability to withstand heavy loads, vibrations, and extreme weather conditions, ensuring its long-term durability and safety.

Q: What are the guidelines for proper spacing and lapping of steel rebars in concrete structures?: The guidelines for proper spacing and lapping of steel rebars in concrete structures vary depending on the specific design and structural requirements. However, some general recommendations exist. The rebars should be adequately spaced to ensure proper concrete cover, allowing for corrosion protection and sufficient bond strength. Typically, the minimum spacing between parallel rebars is around 1.5 times the diameter of the larger bar or 25 mm (1 inch), whichever is greater. Lapping, or overlapping, of rebars is necessary to create a continuous load path. The length of the overlap depends on the design and the type of rebar connection being used. It is important to follow the specifications provided by structural engineers and adhere to local building codes to ensure the proper spacing and lapping of rebars in concrete structures.

Q: Can steel rebars be used in tunnel lining construction?: Yes, steel rebars can be used in tunnel lining construction. In fact, steel rebars are commonly used in tunnel lining because of their high tensile strength and durability. They provide structural reinforcement to the concrete lining, ensuring its stability and long-term performance. The rebars are typically embedded within the concrete lining, forming a strong composite structure that can withstand the loads and pressures experienced in tunnel environments. Additionally, steel rebars can be easily shaped and bent to follow the contour of the tunnel, allowing for efficient and precise construction. Overall, steel rebars are an essential component in tunnel lining construction, providing the necessary strength and structural integrity to ensure the safety and longevity of the tunnels.

Q: Can steel rebars be used in structures with high levels of chloride or sulfate attack?: No, steel rebars should not be used in structures with high levels of chloride or sulfate attack. Chloride attack occurs when chloride ions penetrate the concrete and react with the steel, causing corrosion. This can result in the degradation of the rebars and the overall structural integrity of the building. Similarly, sulfate attack occurs when sulfate ions react with the components of the concrete, leading to the formation of expansive compounds that cause cracking and deterioration. To prevent these types of attacks, alternative materials such as stainless steel rebars or corrosion-resistant alloys should be used in structures exposed to high levels of chloride or sulfate. These materials have a higher resistance to corrosion and can better withstand the aggressive chemical environment. Additionally, proper design and construction techniques, such as adequate concrete cover and the use of protective coatings, can also help mitigate the effects of chloride or sulfate attack. It is important to consult with structural engineers or corrosion specialists to determine the best approach for each specific project.

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