Non-alloy Carbon Steel Round Bars System 1

Non-alloy Carbon Steel Round Bars System 2

Non-alloy Carbon Steel Round Bars System 3

Non-alloy Carbon Steel Round Bars System 4

Non-alloy Carbon Steel Round Bars

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Loading Port:: China main port

Payment Terms:: TT OR LC

Min Order Qty:: 30 m.t.

Supply Capability:: 10000 m.t./month

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Product Name	Typical Grades	Diameter(mm)	Standard adopted
Carbon Steel	20 (1020/S20C/C22)	Ø16-Ø300	GB/SAE/JIS/DIN
40 (1040/S40C/C40)
45 (1045/S45C/C45)
Bearing Steel	GCr9 (51100/SUJ1)	Ø12-Ø250
GCr15 (52100/SUJ2/100Gr6)
GCr9SiMn (A485-Gr.1/SUJ3)
Cr-Mo Steel	20Cr (5120/SCr420H/20Cr4)	Ø12-Ø250
40Cr (5140/SCr440/41Cr4)
42CrMo(4140/SCM440/42CrMo4)
Gear Steel	20CrNiMo	Ø16-Ø600
20CrMn(5115/SMnC420/20MnCr5)
20CrNiMo(8620/SNCM220/20CrMiMo2)

Carbon Steel	Mold bottom, Plastic mold, Construction machinery parts Automobile parts, Security grills, Screens, Construction
Bearing Steel	Aerospace, Navigation, Nuclear energy, Chemical industry Electronic information, Petrochemical, Instrument and meter Transportation
Cr-Mo Steel	Mechanism & Fasteners gear, Stressed components for vehicles Engines and machines, Parts of larger cross-section
Gear Steel	All kinds of gears, Statically and dynamically stressed component for vehicles Engines and machine, Larger cross-section parts, Crankshafts

Company Information

CNBM International Corporation is the most important trading platform of CNBM group.

Whith its advantages, CNBM International are mainly concentrate on Cement, Glass, Iron and Steel, Ceramics industries and devotes herself for supplying high qulity series of refractories as well as technical consultancies and logistics solutions.

FAQ

1, Your advantages?

professional products inquiry, products knowledge train (for agents), smooth goods delivery, excellent customer solution proposale

2, Test & Certificate?

SGS test is available, customer inspection before shipping is welcome, third party inspection is no problem

3, Factory or Trading Company?

CNBM is a trading company but we have so many protocol factories and CNBM works as a trading department of these factories. Also CNBM is the holding company of many factories.

4, Payment Terms?

30% TT as deposit and 70% before delivery.

Irrevocable L/C at sight.

5, Trading Terms?

EXW, FOB, CIF, FFR, CNF

6, After-sale Service?

CNBM provides the services and support you need for every step of our cooperation. We're the business partner you can trust.

For any problem, please kindly contact us at any your convenient time.

We'll reply you in our first priority within 24 hours.

Packaging & Delivery

1, Packaging: seaworthy package or as required

2, Delivery: 35-45 days or based on quantity

Q: What are the different types of steel round bar surface coatings?: There are several different types of steel round bar surface coatings that are commonly used to enhance the performance and durability of the steel. These coatings provide a protective layer to prevent corrosion and improve the overall appearance of the steel round bar. Some of the most common types of steel round bar surface coatings include: 1. Galvanized Coating: This coating involves applying a layer of zinc to the steel round bar. It provides excellent corrosion resistance and is commonly used in outdoor applications where the steel is exposed to moisture and other harsh environmental conditions. 2. Powder Coating: Powder coating involves applying a dry powder to the steel round bar and then curing it under heat. This coating provides a durable and attractive finish, which is resistant to chipping, scratching, and fading. Powder coating is available in a wide range of colors and textures, making it a popular choice for decorative applications. 3. Epoxy Coating: Epoxy coating is a type of thermosetting polymer that is applied as a liquid and then cured to form a protective layer. It provides excellent corrosion resistance and chemical resistance, making it suitable for applications in harsh environments. Epoxy coatings are commonly used in industries such as oil and gas, marine, and chemical processing. 4. Chrome Plating: Chrome plating involves electroplating a layer of chromium onto the steel round bar. This coating provides a high level of corrosion resistance and enhances the appearance of the steel. Chrome plating is commonly used in applications where both corrosion protection and aesthetics are important, such as automotive parts and decorative hardware. 5. Nickel Plating: Nickel plating is similar to chrome plating but involves electroplating a layer of nickel onto the steel round bar. This coating provides excellent corrosion resistance and is commonly used in applications where the steel is exposed to harsh chemicals or extreme temperatures. These are just a few examples of the different types of steel round bar surface coatings available. The choice of coating depends on the specific requirements of the application, including the level of corrosion resistance, chemical resistance, and aesthetic appeal needed. It is important to select the appropriate coating based on the intended use of the steel round bar to ensure optimal performance and longevity.

Q: What are the different joining methods for steel round bars?: There are several different joining methods for steel round bars, including welding, brazing, and mechanical fastening. Welding involves melting the ends of the bars and fusing them together, creating a strong bond. Brazing is a similar process but uses a lower temperature filler metal to join the bars. Mechanical fastening methods, such as using bolts or screws, involve securing the bars together with external connectors. The choice of joining method depends on factors such as the application, desired strength, and ease of implementation.

Q: What is the yield strength of a steel round bar?: The yield strength of a steel round bar can vary depending on the specific grade and type of steel used. However, common structural steel grades have yield strengths ranging from 250 MPa to 800 MPa.

Q: Can steel round bars be used in the manufacturing of gears?: Certainly, gears can utilize steel round bars in their manufacturing process. The utilization of steel round bars is quite common in gear manufacturing given their remarkable attributes such as formidable strength, long-lasting durability, and remarkable resistance to wear and tear. The rounded shape of these bars allows for effortless machining and molding into the desired gear design. Furthermore, steel round bars possess exceptional mechanical properties, including impressive tensile strength and commendable resistance to fatigue, which are crucial for gears that encounter heavy loads and repetitive movements. Additionally, steel round bars can undergo heat treatment to further enhance their hardness and toughness, rendering them ideal for demanding gear applications. All in all, steel round bars are a highly favored option in gear manufacturing due to their adaptability and dependability.

Q: Can steel round bars be used for making agricultural equipment?: Agricultural equipment can indeed be made using steel round bars. These bars are well-known for their exceptional strength and durability, which makes them ideal for heavy-duty applications in the agricultural industry. When it comes to manufacturing various types of agricultural equipment like plows, tillers, cultivators, harrows, and seeders, steel round bars are the go-to choice. Their strength enables these tools to endure the tough conditions found in the field, even when faced with rocks and hard soil. Moreover, steel round bars can be easily shaped and welded, providing flexibility in the design and customization of agricultural equipment to meet specific requirements. All in all, steel round bars are a dependable and cost-efficient material option for creating agricultural equipment due to their strength, durability, and versatility.

Q: What are the different types of steel round bar surface defects?: There are several types of steel round bar surface defects, including pits, roll marks, scratches, cracks, scale, and decarburization.

Q: How do you straighten steel round bars?: Different methods can be employed to straighten steel round bars, depending on the desired precision and the size of the bars. Below are a few commonly used techniques: 1. Manual Straightening: This approach is applicable for smaller diameter round bars. Place the bar on a flat surface and exert pressure on the bent section using either a hydraulic or a manual press. Gradually increase the force until the bar is straightened. This method is relatively straightforward but may not yield flawless results. 2. Heat Straightening: Heat straightening is effective for larger diameter round bars or bars with significant bends. Heat the bent section using an oxy-acetylene torch until it turns red hot. Once heated, apply pressure in the opposite direction of the bend using hydraulic or manual tools. The heat softens the steel, making it easier to manipulate. Caution must be exercised not to overheat the steel, as it could compromise its structural integrity. 3. Roller Straightening: This method is commonly employed in industrial environments and is suitable for larger diameter round bars. Pass the bar through a series of rollers that apply pressure to the bent section, gradually straightening it. This technique provides precise and uniform results but necessitates specialized equipment. 4. Hydraulic Press Straightening: For precise straightening, a hydraulic press can be utilized. Position the bar between two parallel plates and exert pressure using the hydraulic press. Gradually increase the force until the bar is straightened. This method is suitable for bars with minor bends and offers precise control over the straightening process. It is important to note that while these methods can straighten steel round bars, their effectiveness may vary depending on the severity of the bend, the quality of the steel, and the equipment utilized. It is advisable to seek guidance from a professional or adhere to industry-specific guidelines to ensure the safe and accurate straightening of steel round bars.

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 commonly used in the construction industry due to their high strength and durability. They can be easily machined, welded, and fabricated into various shapes and sizes, making them suitable for a wide range of mining equipment. Steel round bars can be used to manufacture components such as shafts, axles, gears, and structural supports in mining machinery. Their ability to withstand heavy loads and harsh environments makes them ideal for mining equipment that operates in rugged conditions. Additionally, steel round bars can be heat-treated to enhance their mechanical properties, further increasing their suitability for mining equipment manufacturing.

Q: Are steel round bars resistant to fire?: Steel round bars are highly resistant to fire. Steel is known for its excellent fire resistance properties due to its high melting point and low thermal conductivity. In the event of a fire, steel round bars will not easily ignite or burn. Additionally, steel's structural integrity remains intact even at high temperatures, making it a preferable choice for construction materials in fire-prone areas. This resistance to fire makes steel round bars a reliable and safe option for various applications, including building structures, industrial equipment, and fire-resistant barriers.

Q: What are the common finishes for steel round bars?: There are several common finishes for steel round bars, each offering unique properties and aesthetic appeal. Some of the most common finishes include: 1. Hot Rolled: This finish is achieved by rolling the steel at a high temperature, which creates a rough and scaled surface. It is commonly used for applications where a rough texture is desired, such as structural components or machinery. 2. Cold Rolled: This finish is achieved by rolling the steel at room temperature, resulting in a smoother and more polished surface. It is often used in applications where a clean and precise appearance is required, such as in the automotive or aerospace industries. 3. Turned and Polished: This finish involves machining the steel round bar to achieve a smooth and polished surface. It is typically used for decorative purposes or in applications where a high level of precision is required, such as in the manufacture of shafts or fasteners. 4. Ground: This finish involves grinding the steel round bar to remove any surface imperfections or irregularities. It results in a smooth and uniform surface, making it suitable for applications where tight tolerances or a consistent finish are essential. 5. Coated or Plated: Steel round bars can also be finished with various coatings or platings to enhance their corrosion resistance or aesthetic appeal. Common options include galvanizing, which involves applying a layer of zinc to protect against rust, or chrome plating, which provides a shiny and attractive finish. Ultimately, the choice of finish for a steel round bar depends on the specific requirements of the application, such as the desired appearance, corrosion resistance, or mechanical properties needed.

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