Steel Round Bar Reliable manufacturer in China
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 400 m.t.
- Supply Capability:
- 2000000 m.t./month
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Description of steel round bar:
1. Commodity: Round steel bar
2. Technical: Hot rolling
3. Length: Min. 5.8meter, according to requirement.
Festures of steel round bar:
1.Dia 80-800mm Length:2000-13000mm or as required
2.Technique:Forged
3.Delivery Time:45 days
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).Providing complete services from manufacturing and marketing to distributing;Steel exported all over the world;
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: What are the different types of surface defects that can occur in steel round bars?
- Steel round bars can experience multiple types of surface defects. Some of the most frequently encountered defects include the following: 1. Scratches: These shallow grooves or marks on the round bar's surface occur due to friction or contact with sharp objects during handling or transportation. 2. Pitting: Small, localized cavities or depressions on the surface are caused by corrosion or exposure to harsh environments. If left unaddressed, pitting can lead to further corrosion. 3. Scale: During the manufacturing process, a thin layer of oxide or impurities, known as scale, can form on the surface of steel round bars. Although it affects appearance and quality, scale is often removed during subsequent processing or cleaning. 4. Scabs: Irregularly shaped protrusions or raised areas on the surface result from solidification or cooling issues during the casting process. Proper attention is required to ensure the strength and integrity of the bar. 5. Roll marks: Elongated depressions or ridges on the surface are caused by uneven or improper rolling during manufacturing. Roll marks can impact the dimensional accuracy of the bar and may necessitate additional processing or grinding for removal. 6. Laminations: Sometimes visible on the surface, laminations are internal defects resulting from improper bonding or separation of layers during the steelmaking process. They can weaken the bar and reduce its load-bearing capacity. 7. Inclusions: Non-metallic particles or impurities can become trapped in the steel during manufacturing, appearing as dark spots or irregularities on the round bar's surface. Inclusions can affect the bar's mechanical properties. It is essential to recognize that the severity and impact of these surface defects may vary. Manufacturers and quality control personnel employ diverse inspection techniques to identify and mitigate these defects, ensuring the quality and reliability of the final product.
- Q: How are steel round bars used in the mining industry?
- The mining industry extensively utilizes steel round bars for various purposes. Underground support systems heavily rely on these bars, commonly employed as roof bolts or rock bolts, to prevent cave-ins or roof falls. In the manufacturing of drilling equipment, steel round bars are frequently transformed into drill rods or drill bits. This conversion allows them to endure the challenging conditions associated with mining operations. The bars are typically subjected to heat treatment to enhance hardness and resistance to wear, ensuring their durability during drilling processes. Within the mining field, steel round bars have another significant application in the production of grinding media for grinding mills. Termed grinding rods, these bars consist of high-quality steel and possess specific hardness and toughness. Their function is to effectively reduce ore particles into smaller sizes, facilitating the extraction of valuable minerals. Furthermore, steel round bars contribute to the construction of conveyor systems in mining operations. They are commonly employed as support bars or rollers in conveyor belts, ensuring the efficient transportation of mined materials from one location to another. To summarize, steel round bars hold a crucial position in the mining industry. Their diverse applications, ranging from providing support in underground mines to manufacturing drilling equipment and grinding media, contribute to the overall efficiency and productivity of mining operations.
- Q: What are the different grades of stainless steel round bars for marine applications?
- The different grades of stainless steel round bars for marine applications include 316, 316L, and 304.
- Q: What are the advantages of using nickel-zinc alloy steel round bars?
- There are several advantages of using nickel-zinc alloy steel round bars. Firstly, nickel-zinc alloy steel has a high strength-to-weight ratio, making it an excellent choice for applications where strength and durability are important. This allows for the construction of lighter structures without sacrificing strength or performance. Secondly, nickel-zinc alloy steel round bars have superior corrosion resistance compared to other types of steel. This makes them ideal for use in harsh environments where exposure to moisture, chemicals, or extreme temperatures may occur. The corrosion resistance properties of nickel-zinc alloy steel also contribute to its longevity and ability to withstand the test of time. Additionally, nickel-zinc alloy steel has excellent weldability and machinability, making it easy to work with and manipulate into various shapes and forms. This versatility allows for the creation of complex designs and structures, making it a popular choice in the construction and manufacturing industries. Furthermore, nickel-zinc alloy steel round bars have good thermal and electrical conductivity properties. This makes them suitable for applications that require the efficient transfer of heat or electricity, such as in the production of electrical components or heat exchangers. Lastly, nickel-zinc alloy steel is known for its high resistance to fatigue and wear, making it suitable for applications that involve repetitive or high-stress operations. This ensures that structures or components made from nickel-zinc alloy steel will maintain their performance and integrity over an extended period of time. In summary, the advantages of using nickel-zinc alloy steel round bars include high strength-to-weight ratio, superior corrosion resistance, excellent weldability and machinability, good thermal and electrical conductivity, and high resistance to fatigue and wear. These properties make nickel-zinc alloy steel a reliable and versatile material for a wide range of applications.
- Q: What is the difference between a peeled and a polished steel round bar?
- A peeled steel round bar is a bar that has had its outer layer or skin removed through a peeling process, resulting in a smooth surface. On the other hand, a polished steel round bar undergoes a polishing process to enhance its appearance and create a reflective, shiny surface. While both bars have a smooth finish, the peeled bar focuses on removing imperfections and enhancing the structural integrity, whereas the polished bar prioritizes aesthetics and visual appeal.
- Q: How do steel round bars compare to aluminum or steel tubing?
- Steel round bars, aluminum tubing, and steel tubing all have their own unique properties and advantages. Steel round bars are known for their high strength and durability, making them suitable for applications that require heavy loads or high-stress conditions. Aluminum tubing, on the other hand, is lightweight and corrosion-resistant, making it ideal for projects that prioritize weight reduction and resistance to environmental elements. Steel tubing offers a balance between strength and weight, making it a versatile choice for various industrial applications. Ultimately, the choice between steel round bars, aluminum tubing, or steel tubing depends on the specific requirements of the project, such as load-bearing capacity, weight limitations, and environmental factors.
- Q: What are the different types of steel round bar alloys for improved toughness?
- Improved toughness is a characteristic associated with various steel round bar alloys. These alloys are specifically formulated to enhance the steel's capacity to withstand impact and resist deformation. Some commonly utilized steel round bar alloys for improved toughness comprise: 1. 4140 Alloy Steel: Renowned for its exceptional toughness and high tensile strength, this alloy finds application in areas that necessitate high impact resistance, such as automotive parts, gears, and shafts. 2. 4340 Alloy Steel: Similar to 4140, 4340 alloy steel offers remarkable toughness and strength. It is frequently employed in applications requiring high fatigue resistance, such as aircraft landing gear components and crankshafts. 3. 8620 Alloy Steel: This alloy is ideal for situations that demand both toughness and good wear resistance. It is commonly employed in gears, pinions, and other high-stress components. 4. 52100 Alloy Steel: Recognized for its high toughness and excellent wear resistance, 52100 alloy steel is frequently used in bearings, valve parts, and other heavy-duty applications. 5. H13 Tool Steel: While predominantly used in hot work applications, H13 tool steel is also acknowledged for its toughness and ability to withstand high impact loads. It is often employed in die casting dies, extrusion dies, and forging dies. 6. A2 Tool Steel: A2 tool steel is another alloy celebrated for its toughness and good wear resistance. It is commonly utilized in cutting tools, punches, and dies. These examples represent merely a fraction of the numerous steel round bar alloys meticulously engineered to deliver enhanced toughness. The selection of the appropriate alloy is contingent upon the specific requirements of the application and the desired level of toughness.
- Q: Can steel round bars be plated?
- Yes, steel round bars can be plated. Plating is a common process used to enhance the appearance and protect the surface of steel bars. The plating can be done using various materials such as chrome, nickel, or zinc, depending on the desired outcome and application of the steel bars. Plating can provide additional corrosion resistance, improve hardness or wear resistance, and also create an attractive finish. It is important to note that proper preparation and cleaning of the steel surface before plating is crucial to ensure a durable and high-quality plated finish.
- Q: What is the difference between a polished and a hot rolled steel round bar?
- The main difference between a polished and a hot rolled steel round bar lies in their manufacturing processes and the resulting surface finish. Hot rolled steel round bars are produced by heating a steel billet or ingot to high temperatures and then rolling it into the desired shape, typically a round bar. This process results in a rough and uneven surface finish with mill scale and imperfections. The hot rolled bars are generally used for applications where surface finish is not critical, such as structural components, machinery parts, and construction materials. On the other hand, polished steel round bars undergo additional processing to achieve a smooth and shiny surface finish. After the hot rolling process, the bars are processed through various grinding and polishing techniques to remove the mill scale, surface imperfections, and achieve a uniform finish. This results in a refined and aesthetically pleasing surface that is suitable for applications where appearance and visual appeal matter, such as decorative items, furniture, and architectural components. In addition to the surface finish, the mechanical properties of the two types of steel round bars can also differ. The hot rolled bars generally have a rougher surface and may exhibit some residual stresses, while the polished bars have a smoother surface and reduced internal stresses. However, the overall mechanical properties, such as strength and hardness, are primarily determined by the grade and composition of the steel used, rather than the manufacturing process or surface finish. In summary, the difference between a polished and a hot rolled steel round bar lies in their surface finish. Hot rolled bars have a rough and uneven surface with mill scale and imperfections, while polished bars undergo additional processing to achieve a smooth and shiny finish. The choice between the two depends on the specific application and the desired appearance of the final product.
- Q: Can steel round bars be used in manufacturing equipment?
- Steel round bars find extensive usage in the manufacturing industry, owing to their diverse advantageous properties. Renowned for their exceptional strength, durability, and resistance to wear and tear, these bars prove to be an ideal choice for heavy-duty machinery and equipment. They play a crucial role in the production of vital components such as shafts, axles, pins, and gears, which are indispensable for the smooth operation of machinery. Moreover, steel round bars possess the ability to be effortlessly machined, welded, and molded into various shapes, thus showcasing their versatility in different manufacturing applications. Consequently, steel round bars emerge as a dependable and extensively utilized material in the manufacturing industry for equipment construction.
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Steel Round Bar Reliable manufacturer in China
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 400 m.t.
- Supply Capability:
- 2000000 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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