Steel Round Bar Reliable Manufacturer from China
- Ref Price:
-
- Loading Port:
- Lianyungang
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 221 m.t.
- Supply Capability:
- 200334443 m.t./month
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Description of steel round bar:
1. Commodity: Round steel bar
3. Technical: Hot rolling
2. Length: Min. 5.8meter, according to requirement.
3. Diameter: 16mm-250mm
5. Packing: In Bundle or according to your requirements.
Festures of steel round bar:
1.Dia 80-800mm Length:2000-13000mm or as required
2.Technique:Forged
3. Annealing after forging:heat to 840-860°c,keep 2-4H,coolbelow to 500°c,hardness≤285HBS. Isothermal annealing after forging:heat to 540-860°c,keep temperature 2-4H,furnacecold to 740-760°c,keep temperature 4-6H,to 500°c,hardness≤255HBS.
Specifications of steel round bar:
1. Standards: AISI 4340 8620 8640 4320 , JIS SNCM8 GB:40CrNiMoA
2. Specification: Dia: 80~450mm Length:2000-13000mm or as required
3. Process: EAF+LF+VD ( necessary) UT+ Peeled +Turned + Heat Treatment (optional)
4. Chemical Composition (%):
C | Si | Mn | S | P | Cr | Ni | Cu | Mo |
0.37-0.44 | 0.17-0.37 | 0.40-0.80 | 0.025(max) | 0.025(max) | 0.60-0.90 | 1.25-1.65 | 0.025(max) | 0.15-0.25 |
Images of steel round bar:
FAQ:
1. What is your package?
Packing situation: standard seaworthy packing or as customer required.
2. How long is the lead time?
Delivery time: 45 days after order confirmed.
3. What payment term do you accept?
Payment: T/T or L/C at sight.
- Q:How are steel round bars classified based on their shape?
- Steel round bars are classified based on their shape into two main categories: hot-rolled round bars and cold-drawn round bars. Hot-rolled round bars are made by heating a steel billet until it becomes malleable and then passing it through a series of rollers to achieve the desired shape. This process results in a rougher surface texture and a slightly larger diameter compared to cold-drawn round bars. Hot-rolled round bars are commonly used in construction, engineering, and manufacturing applications where strength and durability are important. On the other hand, cold-drawn round bars are made by pulling a hot-rolled round bar through a series of dies at room temperature. This process improves the dimensional accuracy, surface finish, and mechanical properties of the steel. Cold-drawn round bars have a smoother surface texture and a more precise diameter, making them suitable for applications that require tight tolerances, such as precision machining, automotive components, and shafts for machinery. In summary, the classification of steel round bars based on their shape is determined by the manufacturing process used. Hot-rolled round bars are rougher and slightly larger in diameter, while cold-drawn round bars have a smoother surface texture and more precise dimensions. The choice between these two categories depends on the specific requirements of the application.
- Q:Can steel round bars be used for making bridges?
- Bridges can be made using steel round bars, as they possess high strength and durability, making them a popular choice in bridge construction. Reinforcing bars, also known as round bars or rebars, are frequently employed to strengthen concrete structures such as bridge decks and piers. These bars enhance tensile strength and promote an even distribution of loads, thereby increasing the bridge's resistance to bending or twisting forces. Furthermore, round bars serve as structural components in cable-stayed or suspension bridges, providing support and reinforcement to the main load-bearing cables. In conclusion, steel round bars are a versatile and dependable option for bridge construction, as they offer the necessary strength and stability to withstand the heavy loads and harsh environmental conditions experienced by bridges.
- Q:What are the different types of steel round bars used in the automotive drivetrain systems?
- There are several types of steel round bars commonly used in automotive drivetrain systems, including alloy steel, carbon steel, and stainless steel. These bars are chosen based on their specific properties and characteristics, such as strength, durability, and resistance to corrosion. The selection of the type of steel round bar depends on the specific application and requirements of the drivetrain system.
- Q:What are the advantages of using manganese-alloy steel round bars?
- Manganese-alloy steel round bars offer several advantages. Firstly, they possess excellent strength and durability, making them ideal for applications that require high load-bearing capacity. Secondly, the presence of manganese in the alloy enhances hardenability, resulting in improved wear resistance and toughness. This makes manganese-alloy steel round bars suitable for use in environments with abrasive conditions or high impact forces. Additionally, these round bars exhibit good machinability, allowing for easy fabrication and shaping. Lastly, the corrosion resistance of manganese-alloy steel ensures a longer lifespan, reducing maintenance requirements and costs in various industries.
- Q:How do steel round bars perform under vibration or resonance?
- Steel round bars exhibit excellent performance under vibration or resonance, thanks to their high strength and stiffness. The inherent properties of steel, including its high modulus of elasticity and low damping characteristics, make it an ideal material for applications involving vibration or resonance. When subjected to vibration or resonance, steel round bars show minimal deformation or deflection. This is because steel possesses a high natural frequency, allowing it to resist external forces or vibrations effectively. Additionally, the high stiffness of steel helps it maintain its shape and integrity in such conditions. Moreover, steel round bars have good fatigue resistance, enabling them to withstand repeated loading and unloading cycles without significant performance degradation. This is particularly crucial for applications involving cyclic loading or vibrations over an extended period. However, it is important to note that factors such as the structure's design, applied loads, and frequency and amplitude of the vibrations can influence the performance of steel round bars under vibration or resonance. In some cases, implementing additional measures like damping materials or isolation systems may be necessary to mitigate the effects of vibration or resonance on steel round bars. All in all, steel round bars are widely recognized for their exceptional performance under vibration or resonance, making them a popular choice in various industries such as construction, automotive, and aerospace. Their reliable strength, stiffness, and fatigue resistance make them durable materials for applications involving dynamic loads or vibrations.
- Q:What is the tolerance for length in steel round bars?
- The tolerance for length in steel round bars can vary based on specific manufacturing standards and requirements. Typically, the tolerance is defined as the maximum allowable deviation from the desired length and can be expressed as a percentage or specific measurement in millimeters or inches. Various international standards organizations, such as ASTM or ISO, may have their own guidelines for steel round bar tolerances. These standards ensure consistent and reliable measurements across the industry. In practice, tolerances for steel round bar length can range from tight tolerances of a few millimeters for precision applications to looser tolerances of several centimeters for general-purpose use. It is important to consider that the tolerance may also depend on the size and diameter of the bar. Smaller diameter bars may have tighter tolerances due to the challenges in manufacturing and accurately measuring longer lengths. Ultimately, the specific tolerance for steel round bar length should be determined based on the intended application and relevant industry standards or customer specifications.
- Q:What are the advantages of using molybdenum-alloy steel round bars?
- There are several advantages of using molybdenum-alloy steel round bars in various applications. Firstly, molybdenum enhances the strength and hardness of the steel, making it an ideal choice for industries that require high strength materials. The addition of molybdenum improves the resistance to deformation under heavy loads, making the round bars more durable and long-lasting. Secondly, molybdenum-alloy steel round bars have excellent heat resistance properties. This makes them suitable for applications that involve high temperatures, such as in the manufacturing of heat exchangers, boilers, and furnace components. The steel's ability to withstand extreme temperatures without losing its strength and structural integrity is a significant advantage. Another advantage is the corrosion resistance provided by molybdenum. Molybdenum-alloy steel round bars exhibit superior resistance to corrosion in various environments, including acidic and alkaline conditions. This makes them an ideal choice for applications in corrosive industries such as chemical processing, oil and gas, and marine environments. Furthermore, molybdenum-alloy steel round bars offer excellent weldability and machinability. The molybdenum content ensures that the steel maintains its structural integrity during welding and machining processes, minimizing the risk of cracks or deformations. This ease of fabrication allows for greater flexibility in design and construction. In addition to these advantages, molybdenum-alloy steel round bars also offer good wear resistance, making them suitable for applications that involve abrasive conditions. Their ability to withstand wear and tear ensures a longer service life, reducing maintenance and replacement costs. Overall, the advantages of using molybdenum-alloy steel round bars include increased strength, heat resistance, corrosion resistance, weldability, machinability, and wear resistance. These properties make them a preferred choice in various industries where durability, reliability, and performance are essential.
- Q:Can steel round bars be used for making exhaust systems?
- Indeed, exhaust systems can be fabricated using steel round bars. Steel, being renowned for its endurance, resistance to heat, and capacity to endure extreme temperatures and harsh surroundings, is widely favored as a material for exhaust systems. By utilizing steel round bars, one can fashion the pipes, mufflers, and other constituents of an exhaust system. Moreover, these bars can be readily welded and molded into the preferred shape, enabling customization and design flexibility. Furthermore, steel round bars can furnish the essential strength and structural soundness imperative for an effective and enduring exhaust system.
- Q:What is the difference between a hot rolled and a precision ground steel round bar?
- The manufacturing processes and resulting surface finishes of a hot rolled steel round bar and a precision ground steel round bar are the primary factors that differentiate them. Hot rolled steel round bars are created by heating the steel billet or ingot to high temperatures and passing it through a series of rollers to achieve the desired shape and size. This method yields a rougher surface finish with visible mill-scale or oxide layers. Additionally, the hot rolling process allows for variations in size and shape, making it a cost-effective choice for producing steel round bars in large quantities. On the other hand, precision ground steel round bars undergo a more refined and controlled manufacturing process. After the initial hot rolling, the bar is ground to achieve a smooth and consistent surface finish. Precision grinding eliminates the mill-scale and oxide layers, resulting in a more polished appearance. This process also ensures tight dimensional tolerance and improved straightness of the round bar. The selection between a hot rolled and a precision ground steel round bar depends on the specific application requirements. Hot rolled round bars are commonly used in applications where surface finish is not crucial, such as structural components, machinery parts, or construction materials. In contrast, precision ground steel round bars are employed in applications that demand a smooth surface finish, precise dimensions, and tight tolerances, such as in the production of precision tools, machinery components, or in industries like aerospace or automotive. In conclusion, the key distinction between a hot rolled and a precision ground steel round bar lies in their manufacturing processes and resulting surface finishes. Hot rolled round bars offer cost-effectiveness and versatility, while precision ground round bars provide a smoother surface finish, tighter tolerances, and improved dimensional accuracy for more demanding applications.
- Q:Can steel round bars be anodized?
- No, steel round bars cannot be anodized because anodizing is a process that is specifically designed for aluminum and its alloys. Anodizing involves creating an oxide layer on the surface of the metal, which provides enhanced corrosion resistance and can also be used for decorative purposes. Steel, on the other hand, does not form a stable oxide layer like aluminum, and therefore cannot be anodized in the same way. However, there are other surface treatment options available for steel, such as galvanizing or powder coating, which can provide similar benefits.
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Steel Round Bar Reliable Manufacturer from China
- Ref Price:
-
- Loading Port:
- Lianyungang
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 221 m.t.
- Supply Capability:
- 200334443 m.t./month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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