Steel Round Bar

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Loading Port:: China Main Port

Payment Terms:: TT OR LC

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Specifications of Steel Round Bar:

1. Standard: GB

2. Grade: Q345

3. Invoicing on theoretical weight or actual weight as customer’s request

4. Shape: Round bar, solid bar of steel with circular section

5. Technique: Hot rolled

Size:

Size (mm)	Section Area (cm²)	Mass (Kg/m)
15	176.625	1.39
16	200.96	1.58

Packaging & Delivery of Steel Round Bar:

Packaging Detail: Standard seaworthy packing or as customer required; all goods are packed in bundle with steel strips and shipped by break bulk vessel or container

Delivery Detail: 45 days

Trade terms: FOB, CFR, CIF or as customer required

MOQ: 25 tons per specification; we can negotiate the quantity if the specification is normal or we have stock of one specification.

Weight: The price 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.

Documents given: Full set (3/3) of original clean on board bill of lading; Original signed commercial invoice, in 3 originals and 3 copies; Original packing list in 3 originals and 3 copies; Policy of insurance; Certificate of origin and what the target market needs.

* If you would like to get our price, please inform us the size, standard/material and quantity. Thank you very much for your attention.

Q: Is HRB335 round steel or rib steel?: HRB335 is the hot rolled ribbed steel, two steel.This is the representation of the mechanical grade and dimension of threaded steel.

Q: What are the different surface finishes for stainless steel round bars?: There are several different surface finishes available for stainless steel round bars, including bright annealed, mill finish, brushed, polished, and satin. Each finish offers a distinct appearance and level of smoothness, allowing for various aesthetic and functional preferences.

Q: What are the common finishes for steel round bars?: Steel round bars can be finished in several ways, each offering unique properties and aesthetic appeal. Some of the most common finishes are as follows: 1. Achieving a rough and scaled surface, hot rolling involves rolling the steel at a high temperature. This finish is commonly preferred for applications where a rough texture is desired, such as structural components or machinery. 2. Cold rolling, on the other hand, results in a smoother and more polished surface. It is achieved by rolling the steel at room temperature and is often used in industries like automotive or aerospace, where a clean and precise appearance is required. 3. For a smooth and polished surface, the steel round bar can be turned and polished. This finish involves machining the bar and is commonly used for decorative purposes or in applications where precision is crucial, such as shafts or fasteners. 4. By grinding the steel round bar, any surface imperfections or irregularities can be removed, resulting in a smooth and uniform finish. This finish, known as grinding, is suitable for applications where tight tolerances or a consistent finish are essential. 5. Alternatively, steel round bars can be coated or plated with different materials to enhance their corrosion resistance or aesthetic appeal. Popular options include galvanizing, which involves applying a layer of zinc to protect against rust, or chrome plating, which provides a shiny and attractive finish. Ultimately, the choice of finish for a steel round bar depends on the specific requirements of the application, such as the desired appearance, corrosion resistance, or mechanical properties needed.

Q: What is the yield strength to tensile strength ratio of a steel round bar?: The yield strength to tensile strength ratio of a steel round bar is typically around 0.85.

Q: What are the different types of steel round bars used in the automotive braking systems?: Automotive braking systems rely on various types of steel round bars that possess specific properties for optimal performance. These steel variants are carefully selected for their strength, durability, and ability to withstand the intense temperatures and pressures that arise during braking. One commonly utilized steel round bar is carbon steel, renowned for its exceptional hardness and high strength. Brake rotors and drums often incorporate carbon steel round bars due to their ability to endure the heat and friction generated during braking, ensuring reliable and long-lasting performance. Stainless steel represents another steel round bar employed in automotive braking systems. Its resistance to corrosion and rust make it an ideal choice for brake lines and fittings. Additionally, stainless steel boasts excellent heat resistance properties, enabling it to endure the thermal stresses generated during braking. Furthermore, alloy steel round bars find application in automotive braking systems. Combining various metals like chromium, nickel, and molybdenum, alloy steel enhances its mechanical properties. Known for their remarkable tensile strength and toughness, alloy steel round bars suit demanding applications that require superior performance and durability. Specialized types of steel round bars also exist, designed specifically for particular applications within automotive braking systems. For instance, heat-treated steel round bars are employed in the manufacturing of brake calipers and pistons due to their capability to withstand the extreme temperatures resulting from the friction between brake pads and rotors. In summary, the selection of steel round bars in automotive braking systems hinges upon specific requirements, encompassing strength, durability, heat resistance, and corrosion resistance. By carefully choosing the appropriate steel variant, automotive manufacturers can guarantee the safety and reliability of their braking systems.

Q: What are the advantages of using magnesium-alloy steel round bars?: There are several advantages of using magnesium-alloy steel round bars: 1. Lightweight: Magnesium is one of the lightest structural materials available, making magnesium-alloy steel round bars significantly lighter than traditional steel bars. This makes them ideal for applications where weight reduction is crucial, such as aerospace and automotive industries. 2. High strength-to-weight ratio: Despite being lightweight, magnesium-alloy steel round bars have a high strength-to-weight ratio. This means they can withstand high loads and provide excellent structural integrity while still maintaining a low weight. 3. Corrosion resistance: Magnesium-alloy steel round bars have excellent corrosion resistance properties, making them suitable for outdoor and marine applications. They can withstand exposure to saltwater, humidity, and other corrosive environments without significant degradation. 4. High machinability: Magnesium-alloy steel round bars are known for their superior machinability, allowing for easy shaping, cutting, and drilling. This makes them desirable in industries that require precise and complex component manufacturing. 5. Good heat dissipation: Magnesium has excellent thermal conductivity, which means that magnesium-alloy steel round bars can effectively dissipate heat. This makes them suitable for applications where heat management is critical, such as in heat sinks for electronic devices or engine components. 6. Eco-friendly: Magnesium is a highly recyclable material, and using magnesium-alloy steel round bars can contribute to a more sustainable and environmentally friendly manufacturing process. The ability to recycle and reuse magnesium alloys minimizes waste and reduces the overall environmental impact. 7. Cost-effective: While magnesium alloys may have a higher initial cost compared to traditional steel, their lightweight nature can lead to significant cost savings in transportation and installation. Additionally, their corrosion resistance and durability reduce the need for frequent maintenance and replacement, further lowering long-term costs. In conclusion, the advantages of using magnesium-alloy steel round bars include their lightweight nature, high strength-to-weight ratio, corrosion resistance, high machinability, good heat dissipation, eco-friendliness, and cost-effectiveness. These properties make them a desirable choice for various industries, particularly those that prioritize weight reduction, performance, and durability.

Q: What is the tolerance for diameter in steel round bars?: The tolerance for diameter in steel round bars can vary depending on the specific application and industry standards. However, in general, the tolerance for diameter in steel round bars typically ranges from +/- 0.005 inches to +/- 0.010 inches.

Q: How are steel round bars used in the construction of stadiums and sports facilities?: Steel round bars are commonly used in the construction of stadiums and sports facilities for their strength, durability, and versatility. These bars are often used as structural elements, providing support and stability to the overall structure. They can be used in the construction of columns, beams, and frames, ensuring the integrity and safety of the facility. Additionally, steel round bars are also used in the fabrication of seating structures, railings, and fencing, enhancing the aesthetic appeal and functionality of the sports venue.

Q: What are the different types of defects that can occur in steel round bars?: There are several types of defects that can occur in steel round bars. These defects can vary in their severity and impact on the overall quality and performance of the bars. Some of the common types of defects found in steel round bars include: 1. Surface defects: These defects are visible on the external surface of the bar and can include scratches, pits, and scaling. While surface defects may not affect the structural integrity of the bar, they can impact its aesthetic appeal and can potentially lead to corrosion if not properly addressed. 2. Internal defects: Internal defects are imperfections that occur within the body of the steel round bar. These defects can include voids, inclusions, and segregation. Internal defects can weaken the bar's mechanical properties and compromise its structural integrity. They can also lead to cracking or failure under stress. 3. Dimensional defects: Dimensional defects refer to variations in the size or shape of the steel round bar. These defects can occur during the manufacturing process and can include variations in diameter, length, or straightness. Dimensional defects can affect the bar's functionality and compatibility with other components in a structure or machinery. 4. Decarburization: Decarburization is a defect that occurs when the surface layer of the steel round bar loses carbon due to exposure to high temperatures during manufacturing or heat treatment processes. This defect can weaken the bar's hardness and strength, making it more susceptible to wear, fatigue, or failure. 5. Lamination: Lamination defects occur when there are layers or separations within the steel round bar. These defects can result from improper rolling or processing techniques. Lamination defects can reduce the bar's strength and ductility, making it prone to fracture or failure. 6. Incomplete heat treatment: Heat treatment is often used to enhance the mechanical properties of steel round bars. However, if the heat treatment process is not performed correctly or if there are inconsistencies in the cooling or reheating process, the bar may have incomplete or uneven heat treatment. This can result in variations in hardness, strength, or toughness along the length of the bar. It is important to note that the severity and impact of these defects can vary depending on the specific application and requirements of the steel round bar. Manufacturers and quality control teams employ various testing and inspection methods to detect and mitigate these defects, ensuring that the bars meet the necessary standards and specifications.

Q: What are the different types of steel round bar coatings used in the marine industry?: In the marine industry, various coatings are commonly used to protect steel round bars from corrosion and other environmental factors. These coatings have been specifically designed to withstand the harsh conditions found in marine environments. The most frequently utilized types of coatings in this industry include the following: 1. Galvanized Coating: A layer of zinc is applied to galvanized steel round bars, offering excellent corrosion protection and durability. This coating is ideal for marine applications where the steel is exposed to corrosive elements such as saltwater. 2. Epoxy Coating: Due to their exceptional resistance to corrosion and strong adhesion properties, epoxy coatings are widely employed in the marine industry. Multiple layers of epoxy are typically applied to ensure optimal protection against saltwater, chemicals, and abrasion. 3. Polyurethane Coating: Polyurethane coatings are highly regarded for their exceptional resistance to UV rays, chemicals, and abrasion. These coatings provide a high level of corrosion protection in marine environments, making them ideal for offshore structures and marine equipment that require long-term durability. 4. Organic Coatings: Acrylics and vinyls are commonly used in the marine industry as organic coatings, offering a protective barrier against corrosion and environmental factors. These coatings are known for their flexibility, ease of application, and resistance to UV radiation. They are often utilized in marine applications where aesthetics and color retention are important. 5. Ceramic Coating: Ceramic coatings are particularly resistant to high temperatures, chemicals, and abrasion. They form a hard, protective layer on steel round bars, making them suitable for marine applications that involve extreme heat and harsh environments. When selecting the appropriate steel round bar coating for a marine project, it is essential to consider the specific requirements of the application. Factors such as the type of exposure, expected service life, and budget should be taken into account to determine the most suitable coating.

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