Steel Round Bar Reliable Manufacturer with from China

Steel Round Bar Reliable Manufacturer with from China System 1

Steel Round Bar Reliable Manufacturer with from China System 2

Steel Round Bar Reliable Manufacturer with from China

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 100 m.t.

Supply Capability:: 2000000 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.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)

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 steel round bar alloys for improved toughness and wear resistance?: There are several different types of steel round bar alloys that are known for improved toughness and wear resistance. Some of these alloys include tool steel, stainless steel, alloy steel, and carbon steel. Each of these alloys has unique properties and compositions that make them suitable for various applications where toughness and wear resistance are crucial.

Q:What are the different types of steel round bar shapes?: There is a wide range of steel round bar shapes to choose from, each possessing its own distinctive characteristics and uses. Some commonly seen types include: 1. Round: This shape is the most commonly used and versatile for steel round bars. It takes on a cylindrical form and finds application in various industries like construction, manufacturing, and automotive. 2. Square: Square steel round bars feature four equal sides and are often employed when a robust and sturdy form is needed. They are frequently utilized in construction, architectural designs, and machinery. 3. Hexagonal: Hexagonal steel round bars boast six sides, setting them apart with their unique shape. They are often selected for applications requiring high strength and corrosion resistance, such as aerospace, defense, and oil and gas industries. 4. Flat: Flat steel round bars exhibit a rectangular cross-section with flat top and bottom surfaces. They are commonly used when a broad, level surface is desired, as in construction, machinery, and manufacturing sectors. 5. Half Round: Half-round steel round bars adopt a semicircular shape with a flat base. They are frequently employed for handrails, fencing, and decorative purposes. 6. D-shaped: D-shaped steel round bars possess a flat bottom surface and a curved top surface, resembling the letter "D". They are often favored when a sturdy yet lightweight structure is required, such as in automotive frames and chassis. These examples merely scratch the surface of the various steel round bar shapes available. The choice of shape hinges upon the specific requirements of the application, encompassing factors like strength, durability, corrosion resistance, and aesthetic appeal.

Q:What are the different types of steel round bar surface defects?: Steel round bars can exhibit various types of surface defects. Among the most common defects are: 1. Scale: This defect arises from the formation of a thin layer of oxide on the steel's surface during manufacturing. It presents as a rough, flaky, or scaly texture and can be easily eliminated through pickling or abrasive cleaning. 2. Pitting: Localized corrosion manifests as small, shallow holes or depressions on the steel's surface. It is usually caused by exposure to corrosive substances or environments and can weaken the material if left unaddressed. 3. Surface cracks: These visible cracks appear on the surface of the steel round bar and can be attributed to factors like improper cooling during manufacturing, excessive stress, or mishandling. Surface cracks can compromise the steel's structural integrity and necessitate careful inspection and repair. 4. Decarburization: This defect occurs when the steel's surface layer loses carbon content, resulting in reduced hardness and strength. High temperatures during heat treatment or inadequate cooling methods often cause decarburization. It can be identified through visual inspection or hardness tests. 5. Lamination: Lamination defects arise when layers or flakes are present within the steel round bar. These layers can weaken the material and compromise its structural integrity. Improper rolling or excessive impurities in the steel are typically responsible for lamination defects. 6. Inclusions: During the manufacturing process, foreign materials or impurities can become trapped within the steel, resulting in inclusions. These can appear as dark spots, streaks, or irregular shapes on the round bar's surface. Inclusions reduce the steel's strength and ductility and can be caused by factors such as poor raw material quality or insufficient refining processes. It is crucial to note that the severity and impact of surface defects on steel round bars can vary. Regular inspection and quality control measures are essential for identifying and rectifying any surface defects, ensuring the reliability and integrity of the steel round bar.

Q:What are the common industries that use steel round bars?: Some common industries that use steel round bars include construction, manufacturing, automotive, aerospace, oil and gas, and machinery.

Q:What are the advantages of using maraging steel round bars?: There are several advantages of using maraging steel round bars in various applications. 1. High strength: Maraging steel round bars have an exceptionally high strength-to-weight ratio, making them ideal for applications where strength is crucial. These bars can withstand high stress and load-bearing conditions without deformation or failure, ensuring structural integrity. 2. Superior toughness: Maraging steel round bars exhibit excellent toughness, which means they can absorb a significant amount of energy before fracturing. This property makes them highly resistant to cracking or breaking, even under extreme conditions, enhancing their durability and reliability. 3. Corrosion resistance: Maraging steel round bars are known for their exceptional corrosion resistance. They are less susceptible to rust and oxidation compared to other types of steel, making them suitable for applications in harsh environments or where exposure to moisture or chemicals is a concern. This corrosion resistance helps prolong the lifespan of the bars and reduces maintenance costs. 4. Machinability: Maraging steel round bars are relatively easy to machine, despite their high strength and hardness. They can be readily shaped, drilled, and cut into various forms and sizes, allowing for versatile applications across different industries. This ease of machining saves time and effort during the manufacturing process. 5. Heat treatability: Maraging steel round bars have excellent heat treatability, meaning they can be hardened and tempered to further improve their mechanical properties. This flexibility in heat treatment allows for customization to meet specific project requirements, such as achieving desired hardness levels or enhancing specific characteristics like wear resistance or toughness. 6. Aerospace and defense applications: Maraging steel round bars are widely used in aerospace and defense industries due to their exceptional strength, toughness, and corrosion resistance. They are commonly employed in the manufacturing of critical components like landing gear, missile casings, and aircraft structures, where reliability and performance are of utmost importance. Overall, the advantages of using maraging steel round bars include their high strength, superior toughness, corrosion resistance, machinability, heat treatability, and suitability for aerospace and defense applications. These properties make them a preferred choice for various demanding industries and ensure optimal performance and longevity in critical applications.

Q:Can steel round bars be used for making connecting rods?: Yes, steel round bars can be used for making connecting rods. Connecting rods are vital components in internal combustion engines, and they require high strength and durability to withstand the forces and stresses involved in the engine's operation. Steel round bars, typically made from alloy steel, have excellent mechanical properties such as high tensile strength, hardness, and fatigue resistance, making them suitable for this application. Furthermore, steel round bars can be easily machined and shaped into the desired dimensions and specifications required for connecting rods. Therefore, using steel round bars is a common and reliable choice for manufacturing connecting rods in the automotive and other industries.

Q:Can steel round bars be used in the manufacturing of mining equipment?: Yes, steel round bars can be used in the manufacturing of mining equipment. Steel round bars are often used as a raw material in the fabrication of various components and parts for mining equipment due to their high strength, durability, and resistance to wear and tear. These bars can be machined, forged, or welded into different shapes and sizes to meet the specific requirements of mining equipment, such as drill bits, conveyor systems, crushers, and support structures.

Q:Can steel round bars be used for making railway tracks?: Yes, steel round bars can be used for making railway tracks. Steel round bars are often used as the primary material for railway tracks due to their strength, durability, and ability to handle heavy loads. They provide a solid and stable foundation for trains to travel on and can withstand the constant wear and tear from train wheels. The round shape of the bars also helps to reduce friction and allows for smooth movement of the trains. Additionally, steel is resistant to corrosion, making it suitable for outdoor and long-lasting applications like railway tracks. Overall, steel round bars are a popular choice for making railway tracks due to their strength, durability, and reliability.

Q:How do you calculate the weight of a steel round bar based on its length, diameter, and density?: In order to determine the weight of a steel round bar, it is necessary to utilize the formula for calculating the volume of a cylinder, which is then multiplied by the density of the steel. Here are the steps to be followed: 1. Determine the radius or diameter of the steel round bar. If the diameter is known, divide it by 2 to obtain the radius. 2. Compute the volume of the round bar by applying the formula V = πr^2h, where V represents the volume, π denotes a mathematical constant roughly equal to 3.14159, r indicates the radius, and h symbolizes the length of the round bar. 3. If the diameter, radius, and length are expressed in different units of measurement, convert them to the same unit. 4. Multiply the volume of the round bar by the density of steel. The density of steel varies depending on the type and grade, but a commonly used value is 7.85 g/cm^3 or 7850 kg/m^3. For instance, suppose there is a steel round bar with a diameter of 2 cm, a length of 50 cm, and a density of steel equal to 7850 kg/m^3. 1. Calculate the radius: r = 2 cm / 2 = 1 cm. 2. Determine the volume: V = π(1 cm)^2 * 50 cm = 50π cm^3. 3. Convert the volume to cubic meters: V = 50π cm^3 * (1 m / 100 cm)^3 = 50π * 10^-6 m^3. 4. Compute the weight: Weight = volume * density = 50π * 10^-6 m^3 * 7850 kg/m^3 = 0.3925 kg. Therefore, the approximate weight of the steel round bar is 0.3925 kg.

Q:How do I choose the right grade of steel round bar for my application?: Choosing the right grade of steel round bar for your application depends on several factors. Firstly, consider the specific requirements of your application such as the desired strength, hardness, corrosion resistance, and machinability. Additionally, assess the environmental conditions the steel will be exposed to, such as temperature, humidity, and chemical exposure. Consulting with a materials engineer or steel supplier can provide valuable guidance, as they can recommend grades that align with your application's needs and budget. Ultimately, selecting the right grade of steel round bar requires careful consideration of these factors to ensure optimal performance and longevity.

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