Hot Rolled Round Steel Bar High Quality System 1

Hot Rolled Round Steel Bar High Quality

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Loading Port:: 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 (%)
Alloy No	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

Mechanical Properties	Grade	Steel diameter（mm）
Mechanical Properties	Grade	≤16	16~40	40~60	60~100
Yield Point Δs/MPa	Q195	≥195	≥185	-	-
Yield Point Δs/MPa	Q235	235	225	215	205
Tensile Strength	Q195	315~390
Tensile Strength	Q235	375~500
Elongation δ5%	Q195	≥33	≥32	-	-
Elongation δ5%	Q235	26	25	24	23

Payment:

-Invoicing on theoretical weight or actual weight as customer’s request.

-FOB, CFR or CIF.

-Regular terms of payment:

1, 30% payment in advance, the remaining balance (70% payment) against the copy of B/L.

2, 30% payment in advance, the remaining balance (70% L/C) against the copy of B/L.

3, Negotiable.

-The payment terms will be written in contraction detailed.

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: Can stainless steel rust?

A3: Stainless does not "rust" as you think of regular steel rusting with a red oxide on the surface that flakes off. If you see red rust it is probably due to some iron particles that have contaminated the surface of the stainless steel and it is these iron particles that are rusting. Look at the source of the rusting and see if you can remove it from the surface.

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Hot Rolled Round Steel Bar High Quality

Q: Can steel round bars be used in the production of sporting goods?: Sporting goods can indeed utilize steel round bars. Steel, a versatile material renowned for its strength and durability, proves fitting for a wide spectrum of applications within the sporting goods industry. To illustrate, steel round bars can be employed to fabricate various components, including shafts, handles, frames, and supports for sporting equipment such as golf clubs, hockey sticks, weightlifting bars, and exercise machines. The robust tensile strength of steel ensures that these components can withstand the rigorous forces and pressures exerted during sports activities, thus affording stability and longevity to the resultant products. Additionally, steel round bars can be effortlessly machined, welded, and molded into different shapes and sizes to meet the particular requirements of each sporting good. Furthermore, steel's ability to resist corrosion renders it an ideal choice for outdoor sporting equipment that is subjected to diverse weather conditions. In summary, steel round bars are an immensely popular option in the production of sporting goods owing to their strength, durability, versatility, and capacity to endure the demands of various sports.

Q: What are the different types of steel round bars used in the manufacturing of gears?: There are several types of steel round bars commonly used in the manufacturing of gears. Some of the most common ones include alloy steel round bars, carbon steel round bars, stainless steel round bars, and tool steel round bars. These steel round bars offer different properties and characteristics that are suitable for various gear applications, such as high strength, durability, wear resistance, and corrosion resistance. The specific type of steel round bar used depends on the specific requirements of the gear and the operating conditions it will be subjected to.

Q: How do you calculate the deflection of a steel round bar?: In order to determine the deflection of a steel round bar, several factors need to be taken into consideration, such as the length, diameter, and applied load of the bar. The deflection of the bar refers to its bending or flexing when subjected to a specific load. The deflection can be calculated using the formula derived from Euler-Bernoulli beam theory. The formula is as follows: δ = (F * L^3) / (48 * E * I) In this formula: - δ represents the deflection - F denotes the applied load - L indicates the length of the bar - E represents the modulus of elasticity of the steel material - I signifies the moment of inertia of the round bar To calculate the moment of inertia (I) for a round bar, you can utilize the following formula: I = (π * D^4) / 64 In this formula: - I represents the moment of inertia - D denotes the diameter of the round bar By substituting the respective values into the formula, the deflection of the steel round bar can be determined under the given load. It should be emphasized that these calculations assume the bar possesses perfect elasticity and adheres to the principles of linear elasticity.

Q: What are the different types of surface defects in steel round bars?: There are several different types of surface defects that can occur in steel round bars. These defects can vary in severity and can impact the quality and performance of the bars. Some of the common types of surface defects in steel round bars include: 1. Scale: Scale is a type of oxide layer that forms on the surface of steel during the manufacturing process. It can appear as a rough, flaky layer on the surface of the bar. Scale can negatively affect the appearance and surface finish of the bar. 2. Pits: Pits are small depressions or cavities that can occur on the surface of the bar. They can be caused by various factors such as corrosion, mechanical damage, or manufacturing defects. Pits can weaken the structural integrity of the bar and make it more susceptible to failure. 3. Scratches: Scratches are shallow grooves or marks on the surface of the bar. They can be caused by handling, transportation, or contact with other objects during the manufacturing process. While scratches may not significantly impact the strength of the bar, they can affect its appearance and surface finish. 4. Cracks: Cracks are linear fractures that can occur on the surface of the bar. They can be caused by excessive stress, thermal cycling, or manufacturing defects. Cracks can be extremely detrimental to the strength and integrity of the bar and can lead to catastrophic failure if left untreated. 5. Decarburization: Decarburization refers to the loss of carbon from the surface layer of the steel bar. It can occur during the heating or cooling processes and can result in a softer and weaker surface layer. Decarburization can reduce the overall strength and durability of the bar. 6. Lamination: Lamination refers to the separation or delamination of layers within the steel bar. It can occur during the manufacturing process due to improper bonding or rolling conditions. Lamination can weaken the structural integrity of the bar and make it more prone to failure. 7. Inclusions: Inclusions are non-metallic particles or impurities that can be present on the surface of the bar. They can be caused by contaminants in the raw materials or improper manufacturing processes. Inclusions can negatively impact the mechanical properties and performance of the bar. It is important to identify and address these surface defects in steel round bars to ensure their quality and performance. Various inspection and testing methods can be employed to detect and mitigate these defects, such as visual inspection, ultrasonic testing, magnetic particle inspection, and dye penetrant inspection.

Q: What are the factors to consider when selecting a steel round bar?: When selecting a steel round bar, there are several factors that should be taken into consideration. Firstly, it is important to consider the grade of steel. Different grades of steel have varying properties and strengths, so the specific application and requirements should be evaluated. For example, if high corrosion resistance is needed, stainless steel grades like 304 or 316 may be suitable, whereas for structural applications, carbon steel grades like A36 or 1018 may be more appropriate. Secondly, the dimensions and size of the round bar should be considered. This includes the diameter, length, and tolerance requirements. The size should be chosen based on the specific application, load-bearing capacity, and the available space for installation. Thirdly, the surface finish and condition of the round bar should be assessed. This includes factors such as surface roughness, straightness, and any surface defects. The surface finish should be selected based on the desired aesthetics, functional requirements, and the manufacturing process. Another important factor is the availability and cost of the steel round bar. It is crucial to consider the availability of the desired grade and size from suppliers, as well as the associated cost. It is advisable to compare prices from different suppliers to ensure the best value for money. Furthermore, the required mechanical properties of the steel round bar should be evaluated. This includes factors such as tensile strength, yield strength, hardness, and ductility. The mechanical properties should align with the intended application and load-bearing requirements. Lastly, it is essential to consider any additional requirements or certifications that may be needed. This could include compliance with specific industry standards (e.g., ASTM, ISO), certifications (e.g., RoHS, REACH), or specific testing requirements (e.g., ultrasonic testing, impact testing). In conclusion, when selecting a steel round bar, it is important to consider the grade, dimensions, surface finish, availability, cost, mechanical properties, and any additional requirements. Taking into account these factors will help ensure that the steel round bar chosen is suitable for the intended application and meets all necessary specifications.

Q: Do you need paint for roof lightning proof steel bars?: The roof lightning protection round steel is the use of metal electrical conductivity and the principle of point discharge, the accumulation of the earth's electricity more rapidly spread to the air, play a role in lightning.

Q: What is the resistance to fatigue of a steel round bar?: The resistance to fatigue of a steel round bar refers to its ability to withstand repeated loading and unloading cycles without experiencing failure or damage. This property is typically evaluated through fatigue testing, where the bar is subjected to a controlled number of stress cycles. The resistance to fatigue of a steel round bar depends on various factors such as the material composition, heat treatment, surface finish, and the presence of any defects or discontinuities.

Q: Are steel round bars suitable for use in the marine industry?: Yes, steel round bars are suitable for use in the marine industry. Steel is a highly durable and strong material, making it ideal for marine applications where there is exposure to harsh environmental conditions such as saltwater, waves, and corrosion. Steel round bars offer excellent tensile strength and resistance to impact, making them suitable for various marine components like shipbuilding, offshore structures, and marine equipment. Additionally, steel is also readily available, cost-effective, and can be easily fabricated to meet specific requirements, making it a popular choice in the marine industry. However, it is important to select the appropriate grade of steel that has good corrosion resistance, such as stainless steel, to ensure long-term durability and performance in marine environments. Regular maintenance, including proper coating and protection against corrosion, is also crucial to enhance the lifespan of steel round bars in marine applications.

Q: What are the different surface treatments for steel round bars?: There are several different surface treatments available for steel round bars, each serving a specific purpose and providing unique benefits. Some of the most common surface treatments for steel round bars include: 1. Hot-dip galvanizing: This process involves immersing the steel round bars in a bath of molten zinc, which creates a protective coating that helps prevent corrosion and rusting. Hot-dip galvanizing is an effective treatment for steel round bars used in outdoor or corrosive environments. 2. Painting: Applying a coat of paint to the surface of steel round bars not only enhances their appearance but also provides a protective barrier against moisture and oxidation. Painting is commonly used for decorative purposes or when a specific color is desired. 3. Powder coating: Powder coating involves applying a dry powder to the steel round bars, which is then cured under heat to form a durable and attractive finish. This treatment offers excellent resistance to impact, chemicals, and UV rays, making it suitable for various applications. 4. Electropolishing: This process uses an electric current and an electrolyte solution to remove a thin layer of the steel round bars' surface, resulting in a smooth and shiny finish. Electropolishing improves the appearance and corrosion resistance of the steel, making it ideal for applications that require a high level of cleanliness and aesthetics. 5. Passivation: Passivation involves treating the steel round bars with an acid solution to remove any free iron or iron oxide from the surface, thus enhancing their corrosion resistance. Passivation is commonly used for stainless steel round bars to increase their longevity and prevent staining or rusting. 6. Shot blasting: Shot blasting is a mechanical surface treatment that involves bombarding the steel round bars with small steel balls or particles at high velocity. This process removes any surface contaminants, scale, or rust, resulting in a clean and roughened surface that improves adhesion for subsequent coatings or treatments. 7. Chrome plating: Chrome plating is a technique where a thin layer of chromium is electroplated onto the surface of steel round bars. This treatment provides excellent corrosion resistance, wear resistance, and a shiny appearance, making it suitable for applications that require durability and aesthetics. Overall, the choice of surface treatment for steel round bars depends on the specific requirements of the application, such as corrosion resistance, aesthetics, or wear resistance. It is important to carefully consider the intended use and environmental conditions before selecting the most appropriate surface treatment for steel round bars.

Q: What is the maximum titanium content allowed for steel round bars?: The maximum titanium content allowed for steel round bars typically depends on the specific steel grade and composition. However, as a general guideline, the maximum titanium content in steel round bars is usually around 0.05-0.06%.

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