• Hot Rolled Carbon Steel Round Bar System 1
  • Hot Rolled Carbon Steel Round Bar System 2
  • Hot Rolled Carbon Steel Round Bar System 3
Hot Rolled Carbon Steel Round Bar

Hot Rolled Carbon Steel Round Bar

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Product Description:

OKorder is offering Round Bar 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:

 

1. Hot rolled round bar of 6-25mm, or small round is mostly used for straight bundles supply, and used for steel, bolts and various mechanical parts. While the bigger round bar, or more than 25mm hot rolled bar, is mainly for the manufacture of mechanical parts or for seamless steel billet.

2. Besides, we can supply some especial material steel round bar that can be used for main shaft of steamer, hummer shank, with big section and supper force.

 

 

Product Advantages:

OKorder's Round 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:

 

1. Grade: Q195, Q235, Q345

2. Diameter: 6mm-150mm

3. Length: 6m, 9m, 12m or as customer’s request

4. Tolerance: Within ±5% for weight; ±2mm for diameter

5. Note: The price can be better is the quantity is good

6. Chemical composition

Alloy No

Element (%)

C

Mn

S

P

Si

Q195

0.06-0.12

0.25

≤0.05

≤0.045

≤0.3

Q235

0.12—0.20

0.3—0.7

≤0.045

≤0.045

≤0.3

Q345

≤0.2

1.00-1.60

≤0.045

≤0.045

≤0.55

 

Production Flow of Round Bar

1. The common processes are preheated forging quenching, dual refinement solution process, cooling quenching and isothermal quenching. We use heat treatment for dual refinement solution process.

2. Material prepare (billet) — heat up — rough rolling — precision rolling — cooling — packing — storage and transportation

 

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.

Q3: How soon can we receive the product after purchase?

A3: Within three days of placing an order, we will begin production. The specific shipping date is dependent upon international and government factors, but is typically 7 to 10 workdays.

Q4: What makes stainless steel stainless?

A4: Stainless steel must contain at least 10.5 % chromium. It is this element that reacts with the oxygen in the air to form a complex chrome-oxide surface layer that is invisible but strong enough to prevent further oxygen from "staining" (rusting) the surface. Higher levels of chromium and the addition of other alloying elements such as nickel and molybdenum enhance this surface layer and improve the corrosion resistance of the stainless material.

 

Images:

 

Q: What is the difference between hot working and cold working of steel round bars?
Hot working and cold working are two different methods used to shape and manipulate steel round bars. Hot working refers to the process of shaping steel at elevated temperatures, typically above the recrystallization temperature of the steel. This allows for the material to be more malleable and easier to shape. Hot working processes include forging, rolling, and extrusion. One of the main advantages of hot working is that it allows for the material to be formed into complex shapes and sizes with minimal force or energy. It also helps to refine the grain structure of the steel, improving its mechanical properties such as strength and toughness. However, hot working can cause oxidation and scale formation on the surface of the steel, which may require additional surface treatments or cleaning. Cold working, on the other hand, involves shaping steel at room temperature or below its recrystallization temperature. Cold working processes include bending, drawing, and cold rolling. Unlike hot working, cold working does not require heating the steel, which can save energy and reduce production costs. It also produces a smoother surface finish and tighter tolerances compared to hot working. Cold working can increase the hardness and strength of the steel, making it suitable for applications that require higher mechanical properties. However, cold working can also make the steel more brittle and prone to cracking. In summary, the main difference between hot working and cold working of steel round bars is the temperature at which the shaping process takes place. Hot working is done at elevated temperatures, allowing for easier shaping and improved mechanical properties, while cold working is done at room temperature or below, resulting in tighter tolerances and increased hardness. The choice between hot working and cold working depends on the desired properties and characteristics of the final product.
Q: What is the fatigue strength of a steel round bar?
The fatigue strength of a steel round bar refers to its ability to withstand repeated loading and unloading cycles without experiencing failure. It is a measure of the maximum stress that the bar can endure without developing cracks or fractures due to fatigue. The fatigue strength of a steel round bar depends on various factors such as the material composition, surface condition, size, and manufacturing process.
Q: What are the different welding techniques for steel round bars?
Steel round bars can be welded using various techniques. Here are some commonly used ones: 1. Stick welding, also known as Shielded Metal Arc Welding (SMAW): This technique involves using an electrode coated in flux to create an electric arc between the electrode and the workpiece. The base metal melts, resulting in a weld. 2. Gas Metal Arc Welding (GMAW), commonly referred to as MIG (Metal Inert Gas) welding: In this technique, a wire electrode is fed through a welding gun. It combines with a shielding gas to create a weld. 3. Flux-Cored Arc Welding (FCAW): Similar to GMAW, FCAW uses a continuously fed electrode. However, instead of a solid wire electrode, it uses a tubular electrode filled with flux. This flux protects the weld and adds strength. 4. Tungsten Inert Gas (TIG) welding, also known as Gas Tungsten Arc Welding (GTAW): This precise technique involves using a non-consumable tungsten electrode to create an arc. Additional material may be added using a filler rod. 5. Submerged Arc Welding (SAW): This technique is suitable for heavy-duty applications, such as welding steel round bars for structural purposes. The arc and welding zone are submerged in granular flux, providing protection and deep penetration. Each technique has its advantages and is suitable for specific applications. Factors like round bar thickness, required weld strength, and accessibility of the welding site should be considered when selecting the appropriate technique for a strong and durable weld on steel round bars.
Q: What is the maximum aluminum content allowed for steel round bars?
The maximum aluminum content allowed for steel round bars typically varies depending on the specific industry standards and specifications. However, a common maximum aluminum content limit for steel round bars is around 0.20-0.35%.
Q: Can steel round bars be used for making tie rods?
Indeed, tie rods can be fashioned from steel round bars. Owing to their robustness and endurance, steel round bars find widespread usage in the realm of construction and engineering. By offering structural reinforcement and stability, tie rods serve a vital purpose, and steel round bars are particularly appropriate for this task. Possessing remarkable tensile strength, they can withstand substantial loads and tension, rendering them a perfect selection for tie rods. Moreover, steel round bars enable effortless fabrication and welding, thereby allowing for adaptability and versatility in the creation and assembly of tie rods.
Q: How do you measure the diameter tolerance of a steel round bar?
To measure the diameter tolerance of a steel round bar, you can follow the steps below: 1. Obtain a caliper or micrometer: These measuring tools are commonly used to measure the diameter of objects accurately. 2. Set the measuring tool: If you are using a caliper, adjust the jaws to the appropriate size range. For a micrometer, ensure it is zeroed correctly. 3. Position the round bar: Place the steel round bar on a flat and stable surface, ensuring that it is not rolling or moving. 4. Take the measurement: Use the measuring tool to capture the diameter of the round bar. For accurate results, make sure the tool is perpendicular to the bar and apply gentle pressure to get an accurate reading. 5. Repeat the measurement: To ensure accuracy, take multiple measurements at different points along the length of the round bar. This will account for any variations or deviations in the bar's diameter. 6. Calculate the average diameter: Add up all the measurements and divide by the number of measurements taken. This will give you the average diameter of the round bar. 7. Compare with the tolerance range: Consult the specifications or standards provided for the steel round bar to determine the allowable tolerance range. This range will indicate the acceptable variation in diameter for the bar. 8. Analyze the results: Compare the average diameter obtained from your measurements with the specified tolerance range. If the average diameter falls within the tolerance range, the round bar meets the required specifications. However, if it falls outside the range, the bar may not meet the required tolerance and might need further inspection or adjustment. By following these steps, you can effectively measure the diameter tolerance of a steel round bar and ensure it meets the necessary specifications for your intended application.
Q: Can steel round bars be used in the production of tools?
Yes, steel round bars can definitely be used in the production of tools. Steel is widely used in tool manufacturing due to its excellent strength, durability, and versatility. Steel round bars, in particular, are commonly utilized for their ability to be machined, forged, and heat-treated into various tool components such as cutting edges, shafts, handles, and dies. The high tensile strength and resistance to wear and corrosion make steel round bars an ideal choice for tool production, ensuring the longevity and performance of the tools. Additionally, steel can be easily customized and shaped to meet the specific requirements of different tools, making it a preferred material in the industry.
Q: What is the difference between a hot-rolled and a ground steel round bar?
The production of a hot-rolled steel round bar involves a process known as hot rolling. This process entails heating the steel above its recrystallization temperature and passing it through rollers to achieve the desired shape and size. As a result, the bar has a rough surface finish with a scaled or uneven texture. Hot-rolled steel round bars find common usage in construction, manufacturing, and general fabrication applications where a smooth finish is not a primary concern. Contrarily, a ground steel round bar goes through a process called grinding after the initial hot rolling. Grinding entails the removal of the outer layer of the hot-rolled bar to create a smooth and consistent surface finish. This process eliminates any imperfections, including scale or unevenness, resulting in a more precise and refined product. Ground steel round bars are often employed in applications where a smooth surface finish is crucial, such as in machining, toolmaking, and precision engineering. In conclusion, the primary distinction between a hot-rolled and a ground steel round bar lies in the surface finish. Hot-rolled bars possess a rough and uneven texture, whereas ground bars exhibit a smooth and consistent surface. The choice between the two depends on the specific application and the desired level of surface finish required.
Q: Can steel round bars be used in the marine industry?
Yes, steel round bars can be used in the marine industry. Steel is a strong and durable material that can withstand the harsh conditions of the marine environment, including corrosion from saltwater. Steel round bars are commonly used for various applications in the marine industry, such as shipbuilding, offshore structures, and marine equipment, due to their excellent mechanical properties and resistance to corrosion.
Q: How do you cut steel round bars?
To cut steel round bars, one can utilize various methods based on specific requirements and available tools. Here are a few commonly employed techniques: 1. Abrasive Cutting: By using a handheld angle grinder or chop saw equipped with an abrasive cutting wheel or disc, a groove is created on the surface of the round bar. Applying pressure and rotating the bar gradually allows the cutting wheel to slice through the steel. 2. Cold Saw: This specialized machine operates with a circular blade at a low speed, minimizing heat generation. The round bar is firmly clamped, and the cold saw's blade is lowered onto it to achieve precise cuts. 3. Band Saw: Another commonly used machine for steel round bar cutting, the band saw features a rotating toothed metal band that moves on two pulleys. The round bar is secured in a vise, and the band saw is adjusted to the desired angle and speed. The bar is then fed into the blade, resulting in smooth cuts. 4. Torch Cutting: For thicker steel round bars, oxy-fuel torch cutting is suitable. This method involves using a torch that combines oxygen and fuel gas, like acetylene, to produce a high-temperature flame. The round bar is heated until it becomes molten, and then a separate stream of oxygen is directed onto the heated area, causing rapid oxidation and enabling a cut. Irrespective of the chosen method, it is crucial to adhere to proper safety measures, including wearing protective goggles and gloves, and ensuring a stable work surface. Furthermore, using the appropriate cutting tools and techniques for the specific type of steel being cut is vital to achieve clean and precise results.

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