Hot Rolled Carbon Steel Round Bar
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- China Main Port
- Payment Terms:
- TT or LC
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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.
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- Q: What are the different types of corrosion-resistant steel round bars?
- There are several different types of corrosion-resistant steel round bars available in the market. Some of the commonly used types include: 1. Stainless Steel Round Bars: Stainless steel is a popular choice for corrosion-resistant applications due to its high resistance to rust and corrosion. It contains chromium, which forms a protective oxide layer on the surface of the steel, preventing further corrosion. 2. Duplex Stainless Steel Round Bars: Duplex stainless steel is a type of stainless steel that contains a balanced combination of austenite and ferrite microstructures. This gives it excellent corrosion resistance, high strength, and good weldability. 3. Nitronic Stainless Steel Round Bars: Nitronic stainless steel is a high-performance alloy that offers superior corrosion resistance, high strength, and good ductility. It contains nitrogen, which enhances its resistance to pitting and crevice corrosion. 4. Alloy Steel Round Bars: Alloy steel is a type of steel that is alloyed with various elements to improve its properties. Some alloy steels, such as corrosion-resistant alloys (CRA), are specifically designed to resist corrosion in harsh environments. These alloys typically contain elements such as chromium, nickel, and molybdenum. 5. Aluminum Round Bars: While not technically steel, aluminum round bars are often used in applications where corrosion resistance is essential. Aluminum forms a protective oxide layer on its surface, which helps prevent corrosion. It is particularly suitable for applications where weight is a concern. 6. Copper-Nickel Round Bars: Copper-nickel alloys, such as Cu-Ni 90/10 and Cu-Ni 70/30, are widely used in marine and offshore applications due to their excellent resistance to seawater corrosion. These alloys have high strength, good ductility, and exceptional resistance to biofouling. These are just a few examples of the different types of corrosion-resistant steel round bars available. The choice of material depends on the specific application requirements, environmental conditions, and budget considerations. It is important to consult with a materials engineer or specialist to select the most suitable corrosion-resistant steel round bar for a particular application.
- Q: Can steel round bars be coated for added protection?
- Steel round bars can indeed be coated to provide additional protection. Coating these bars is effective in boosting their resistance to corrosion, wear and tear, as well as other environmental factors that may cause deterioration or damage. There are multiple coating options available for steel round bars, including hot-dip galvanizing, epoxy coating, powder coating, and zinc plating. These coatings create a protective layer that acts as a barrier between the steel and its surroundings, thus preventing direct contact with corrosive substances or abrasive elements. By coating steel round bars, not only does their lifespan and durability increase, but their aesthetic appearance also improves. The choice of coating depends on the specific application, environment, and desired level of protection.
- Q: Can steel round bars be machined using CNC equipment?
- Yes, steel round bars can be machined using CNC equipment. CNC (Computer Numerical Control) machines are capable of accurately and precisely shaping steel round bars into various desired forms and dimensions.
- Q: What are the advantages of using nickel-tungsten alloy steel round bars?
- There are several advantages of using nickel-tungsten alloy steel round bars: 1. High strength and durability: Nickel-tungsten alloy steel round bars have excellent strength and durability properties. This makes them suitable for applications that require resistance to wear, fatigue, and high-temperature environments. 2. Corrosion resistance: The addition of nickel in the alloy enhances its corrosion resistance properties. This makes nickel-tungsten alloy steel round bars highly resistant to various corrosive environments, including acids, alkalis, and seawater. 3. Excellent heat resistance: Nickel-tungsten alloy steel round bars exhibit excellent heat resistance, which allows them to maintain their mechanical properties even at elevated temperatures. This makes them ideal for applications that involve high-temperature environments, such as in the aerospace and automotive industries. 4. Good electrical conductivity: The inclusion of tungsten in the alloy enhances its electrical conductivity properties. This makes nickel-tungsten alloy steel round bars suitable for applications that require good electrical conductivity, such as in electrical connectors and electronic devices. 5. Machinability: Nickel-tungsten alloy steel round bars are relatively easy to machine, allowing for the production of complex shapes and designs. This makes them versatile and suitable for various manufacturing processes, including machining, forging, and welding. 6. Cost-effective: Despite their advantageous properties, nickel-tungsten alloy steel round bars are relatively cost-effective compared to other high-performance alloys. This makes them a cost-efficient choice for many industries, as they offer a balance between performance and affordability. Overall, the advantages of using nickel-tungsten alloy steel round bars make them a preferred material for a wide range of applications, including aerospace, automotive, electrical, and manufacturing industries.
- Q: What is the difference between a hot-rolled and a forged steel round bar?
- The main difference between a hot-rolled and a forged steel round bar lies in the manufacturing process and the resulting properties of the finished product. Hot-rolled steel round bars are produced by heating a billet or ingot of steel to a high temperature and then shaping it into the desired form using rollers. This process allows for a high volume of production and a wide range of sizes and shapes. As the steel is heated and shaped, it undergoes significant deformation and recrystallization, resulting in a uniform grain structure. Hot-rolled steel round bars have a rougher surface finish and can have varying levels of internal stress due to the cooling process. They are commonly used in applications where strength and cost-effectiveness are important, such as construction, manufacturing, and general fabrication. On the other hand, forged steel round bars are produced by applying extreme pressure to a heated billet or ingot of steel, typically using a hammer or a press. This process creates a much stronger and more durable product compared to hot-rolled steel. The intense pressure applied during forging aligns the steel's grain structure, resulting in improved mechanical properties such as increased strength, toughness, and resistance to fatigue and impact. Additionally, the forging process eliminates internal voids and porosity, making forged steel round bars more reliable and less prone to failure. Due to the high level of customization and precision involved in forging, these round bars are often used in critical applications that require superior strength and performance, such as aerospace, automotive, and oil and gas industries. In summary, the main differences between hot-rolled and forged steel round bars lie in their manufacturing processes and resulting properties. Hot-rolled steel offers cost-effectiveness and a wide range of sizes and shapes, while forged steel provides superior strength, durability, and reliability. The choice between the two depends on the specific application and the desired performance characteristics.
- Q: What is the maximum length of a steel round bar?
- The maximum length of a steel round bar can vary depending on several factors such as the manufacturing capabilities, transportation limitations, and specific requirements of the project. However, in general, steel round bars can often be manufactured and transported in lengths of up to 12 meters (40 feet) or longer.
- Q: How do steel round bars compare to fiberglass round bars?
- Steel round bars and fiberglass round bars have different properties and characteristics, making them suitable for different applications. Steel round bars are known for their high strength and durability, making them ideal for heavy-duty applications such as construction, machinery, and automotive industries. They have a higher tensile strength and can withstand more stress and load compared to fiberglass round bars. On the other hand, fiberglass round bars are lighter in weight, have excellent corrosion resistance, and are non-conductive, making them suitable for applications that require electrical insulation or resistance to chemicals. Ultimately, the choice between steel and fiberglass round bars depends on the specific requirements of the project or application.
- Q: What are the different types of heat treatment for steel round bars?
- There are several different types of heat treatment methods commonly used for steel round bars. These methods are employed to improve the mechanical properties and overall performance of the steel. The most commonly used heat treatment processes for steel round bars include annealing, normalizing, quenching, tempering, and case hardening. 1. Annealing: This heat treatment process involves heating the steel round bars to a specific temperature and then slowly cooling them to room temperature. Annealing helps in reducing internal stresses, improving machinability, and increasing ductility. 2. Normalizing: In normalizing, the steel round bars are heated to a temperature above the critical range and then allowed to cool in still air. This process helps in refining the grain structure and enhancing the mechanical properties of the steel, such as strength and toughness. 3. Quenching: Quenching involves heating the steel round bars to a high temperature and then rapidly cooling them by immersing them in a quenching medium, such as water, oil, or polymer. This process results in the formation of a hardened microstructure, increasing the hardness and wear resistance of the steel. 4. Tempering: After the quenching process, the steel round bars are subjected to tempering. Tempering involves reheating the quenched steel to a specific temperature and then cooling it in still air. This process reduces the brittleness caused by quenching, increases the toughness of the steel, and helps in relieving residual stresses. 5. Case hardening: This heat treatment process is used to increase the hardness and wear resistance of the outer surface of the steel round bars while maintaining a tough and ductile core. Case hardening involves heating the steel in the presence of a carbon-rich atmosphere or by applying a carbon-rich substance, followed by quenching and tempering. Each of these heat treatment methods has its own advantages and is used based on the desired properties and applications of the steel round bars. It is important to carefully select the appropriate heat treatment process to achieve the desired mechanical properties and performance of the steel.
- Q: How are steel round bars made?
- Steel round bars are made through a process called hot rolling. It involves heating a large rectangular steel billet until it reaches a malleable temperature. The heated billet is then passed through a series of rolling stands, which progressively reduce its thickness and shape it into a round bar. The first step in the hot rolling process is heating the billet in a furnace at extremely high temperatures, typically around 1200 to 1300 degrees Celsius. This heat makes the steel more pliable and easier to shape. Once the billet is heated, it is fed into a rolling mill. The mill consists of a series of rollers that gradually reduce the thickness and elongate the billet. As the billet passes through each set of rollers, it is squeezed and stretched, gradually forming a round shape. The number of passes through the rolling mill depends on the desired final size and shape of the round bar. During the rolling process, the steel bar is also cooled to prevent overheating and ensure proper metallurgical properties. This can be done through a water spray or air cooling system. After the bar has been shaped and cooled, it is cut into desired lengths. The cut bars are then subjected to further processes such as straightening, surface treatment, and quality testing. These additional steps ensure that the steel round bars meet the required specifications and standards. Overall, the process of making steel round bars involves heating a steel billet, passing it through a series of rolling stands to shape it into a round bar, cooling it, and then cutting it into desired lengths. This process allows for the production of strong and durable round bars that find various applications in industries such as construction, manufacturing, and engineering.
- Q: What are the different tolerances for steel round bars?
- Steel round bars have a range of tolerances that are determined by the specific requirements and standards of different industries and applications. These tolerances ensure that the dimensions and surface conditions of the bars meet the desired specifications. The diameter tolerance is the most common tolerance for steel round bars. It refers to the allowable deviation from the specified diameter. For example, a steel round bar with a diameter tolerance of +/- 0.005 inches means that the actual diameter can vary within this range. Another important tolerance is the straightness tolerance, which measures the allowable deviation from a straight line over a specified length of the bar. Straightness tolerances are usually expressed as the maximum deviation in relation to the length, such as 0.010 inches per foot. Surface finish tolerance is also crucial and refers to the acceptable variation in the surface texture or roughness of the bar. This tolerance is often specified using parameters like Ra or Rz. For instance, a surface finish tolerance of Ra 0.8 micrometers means that the average roughness should not exceed this value. In addition to these common tolerances, there may be other specific tolerances based on the intended application of the steel round bars. These can include tolerances for straightness, length, weight, or other dimensional properties. It's important to note that the tolerances for steel round bars can vary depending on the standards followed by different industries and countries. To determine the specific tolerances required for a particular application, it's advisable to refer to the relevant standards or specifications.
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Hot Rolled Carbon Steel Round Bar
- Ref Price:
-
- Loading Port:
- China Main Port
- Payment Terms:
- TT or LC
- Min Order Qty:
- -
- Supply Capability:
- -
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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