Round bar

Ref Price:

Loading Port:: China Main Port

Payment Terms:: TT OR LC

Min Order Qty:: -

Supply Capability:: -

Inquire Now

Add to My Favorites

OKorder Service Pledge

Quality Product, Order Online Tracking, Timely Delivery

OKorder Financial Service

Credit Rating, Credit Services, Credit Purchasing

Wire Rod Q235 Details:

Minimum Order Quantity:	25 Tons	Unit:	m.t.	Loading Port:	XINGANG PORT,China
Supply Ability:	100,000 Tons Per Month	Payment Terms:	TT or LC

Product Description:

Specifications of Wire Rod Q235:

Steel Grade: Q235, Standard: GB Diameter: 5.5mm, 6.5mm, 7mm,8mm,9mm,10mm,12mm,14mm

Diameter Tolerance:±0.3mm 6.5mm can be drawing into 2mm/8.0mm can be drawing into 3mm

Brand Name: N-RIVER Place of Origin: Hebei, China Mainland Application: construction, building etc

Chemical Composition:

Please kindly find our chemistry of our material based on Q235 as below for your information

Trademark	Rank	Chemical composition (quality score) %
		C	Si	Mn	S	P
		C	Si	Mn	S	P
			≤		≤	≤
Q235	A	0.14-0.22	0.30	0.30-0.65	0.050	0.045
Q235	B	0.12-0.20	0.30	0.30-0.70	0.045	0.045
Trademark	Rank	Pulling Test
		Bend PointΔs/Mpa		Tensile Strength	Elongation Ratioδ5%
					Elongation Ratioδ5%
		Thickness (Diameter) /MM			Thickness (Diameter) /MM
		≤16	16-40		≤16	16-40
		≥			≥
Q235	A	235	225	375-500	26	25
Q235	B	235	225	375-500	26	25

Usage and Applications of Wire Rod Q235:

After hot-rolled the products shaped into coil and delivery as finished product, including round, square, rectangular, hexagonal and so on. Since most of the products are round, it is generally called wire rod. Carbon steel wire rod is widely used in construction and manufacturing. Carbon steel wire rod is mainly used for reinforcement of reinforced concrete and welded structure or reprocessed (roberts , nail, etc.) materials, especially used to produce wire drawing, welding electrode, nails, spring, electronic, precise machinery parts and so on.

Packaging & Delivery of Wire Rod Q235:

Packaging Detail: products are packed in coil and then shipped by container or bulk vessel

Each coil weight: 2-3MT

Delivery Detail: within 45 days after received deposit or LC.

Label: to be specified by customer, generally, each bundle has 1-2 labels

Trade terms: FOB, CFR, CIF

Q: Are steel round bars susceptible to cracking?: Cracking in steel round bars can occur under certain circumstances. Factors that contribute to cracking include high stress levels, improper heat treatment, and the presence of impurities or defects in the material. Cracking is also more likely with sudden temperature changes or excessive loading. It is worth noting that the susceptibility to cracking varies depending on the grade and composition of the steel. Low carbon or mild steel is generally less prone to cracking compared to higher carbon or alloy steels. To prevent cracking, it is crucial to handle and store steel round bars properly. This includes avoiding dropping or mishandling the bars and storing them in a dry, controlled environment to prevent corrosion. Proper heat treatment processes, such as annealing or tempering, can improve the structural integrity of steel round bars and reduce the risk of cracking. Regular inspections and testing for defects or impurities can help identify and address issues before they lead to cracking. In conclusion, while steel round bars can be susceptible to cracking, taking appropriate precautions and using proper manufacturing and handling techniques can minimize the risk and ensure the bars' integrity.

Q: What are the different surface defects that can occur in steel round bars?: There are several different surface defects that can occur in steel round bars. These defects can be classified into various categories based on their appearance and severity. Some of the common surface defects include: 1. Scale: Scale is a thin layer of oxide that forms on the surface of steel during the manufacturing process. It appears as a rough, flaky coating and can be easily removed by mechanical means. 2. Pits: Pits are small depressions or craters that can occur on the surface of the steel. They are usually caused by corrosion or mechanical damage. Pits can weaken the structural integrity of the steel and may require repair or replacement. 3. Scratches: Scratches are shallow grooves or cuts on the surface of the steel. They can be caused by handling, transportation, or machining processes. While minor scratches may not affect the performance of the steel, deep scratches can lead to stress concentration and potential failure. 4. Roll marks: Roll marks are raised or depressed lines or patterns that are left on the surface of the steel during the rolling process. These marks are typically caused by the uneven pressure distribution between the rolls and can affect the dimensional accuracy and surface quality of the steel. 5. Laminations: Laminations are thin layers or bands of non-metallic inclusions that can occur parallel to the surface of the steel. They are usually caused by inadequate refining or improper casting techniques. Laminations can decrease the strength and toughness of the steel and may require further processing or rejection. 6. Decarburization: Decarburization refers to the loss of carbon content on the surface of the steel. It can occur during heating, annealing, or hot working processes. Decarburization can reduce the hardness and strength of the steel and may lead to premature failure under load. 7. Surface cracks: Surface cracks are visible cracks that occur on the surface of the steel. They can be caused by excessive cooling rates, improper heat treatment, or mechanical stress. Surface cracks can compromise the structural integrity of the steel and may require repairs or rejection. These are just a few examples of the different surface defects that can occur in steel round bars. It is essential to inspect and address these defects to ensure the quality and performance of the steel in various applications.

Q: How do I choose the right grade of steel round bar for my application?: To select the appropriate grade of steel round bar for your needs, it is crucial to carefully consider various factors. Here are some guidelines to assist you in making an educated decision: 1. Begin by understanding the specific requirements of your application. Take into account factors like load-bearing capacity, resistance to corrosion, temperature endurance, and any applicable industry regulations or standards. 2. Determine the mechanical properties necessary for your application. Depending on the specific use, you may require certain properties such as strength, hardness, toughness, or ductility. Prioritize these properties based on their significance to your application. 3. Assess the environmental conditions in which the steel round bar will be used. This includes factors like exposure to moisture, chemicals, high temperatures, or abrasive surroundings. Certain grades of steel offer better resistance to corrosion or heat, rendering them more suitable for specific conditions. 4. Seek guidance from experts if you are uncertain about the most suitable grade of steel for your application. Consult metallurgists, engineers, or suppliers who can provide valuable insights based on their expertise and experience. 5. Compare and contrast different grades of steel round bars available in the market once you have a clear understanding of your application requirements. Consider factors such as composition, manufacturing process, and specific properties associated with each grade. Look for grades that closely align with your requirements. 6. Review the industry standards and specifications to determine if any specific grades are mandated for your application. These standards can offer guidance and ensure compliance with safety and quality requirements. 7. Evaluate the cost-effectiveness of various grades by considering factors like initial purchase cost, maintenance and replacement expenses, and the overall lifespan of the steel round bar. 8. If possible, conduct tests or trials using different grades of steel round bars to assess their performance in your specific application. This will provide valuable data to aid your decision-making process. By following these steps and taking all relevant factors into account, you can efficiently and effectively select the appropriate grade of steel round bar that meets the demands of your application.

Q: How do steel round bars compare to glass round bars?: Steel round bars and glass round bars differ in terms of their properties and applications. Here's a comparison: Strength and Durability: Steel round bars possess exceptional strength and durability, with a high tensile strength that allows them to withstand heavy loads and pressure without deformation. Conversely, glass round bars are fragile and easily break under stress or impact, making them unsuitable for structural applications where strength is crucial. Weight: Steel round bars are considerably heavier than glass round bars. Although this can be advantageous in applications requiring stability and support, it can be a disadvantage in situations where lightweight materials are desired. Corrosion Resistance: Steel round bars are susceptible to corrosion when exposed to moisture or harsh environments. However, they can be safeguarded by coatings or alloys that enhance their resistance to corrosion. In contrast, glass round bars are not prone to corrosion, making them an ideal choice in corrosive environments. Transparency and Aesthetics: Glass round bars have the advantage of transparency, making them suitable for decorative purposes or applications where visibility is important. On the other hand, steel round bars are opaque and lack this characteristic. Thermal Conductivity: Steel round bars have higher thermal conductivity compared to glass round bars. This property makes them more suitable for applications requiring heat transfer or dissipation. Cost: Steel round bars are generally more affordable than glass round bars. The production processes and limited availability of specialized glass types contribute to the higher cost of glass round bars. In conclusion, steel round bars are favored for their strength, durability, and cost-effectiveness, making them suitable for structural applications. Conversely, glass round bars offer transparency, aesthetic appeal, and corrosion resistance, making them suitable for decorative or specific applications where visibility is important. Ultimately, the choice between the two materials depends on the specific requirements and constraints of the project at hand.

Q: What are the different surface treatments available for carbon steel round bars?: There are several different surface treatments available for carbon steel round bars, each serving a specific purpose and offering unique benefits. Some of the most common surface treatments for carbon steel round bars include: 1. Galvanizing: This treatment involves applying a layer of zinc to the surface of the carbon steel round bar. Galvanizing provides excellent corrosion resistance and can significantly extend the lifespan of the steel. 2. Black oxide coating: Also known as blackening, this treatment creates a dark, uniform finish on the surface of the carbon steel round bar. Black oxide coatings offer mild corrosion resistance and can also provide improved lubricity and a decorative appearance. 3. Chromium plating: This treatment involves depositing a layer of chromium onto the surface of the carbon steel round bar, typically through electroplating. Chromium plating enhances the corrosion resistance of the steel and can also provide improved wear resistance and a polished appearance. 4. Nitriding: Nitriding is a heat treatment process that diffuses nitrogen into the surface of the carbon steel round bar, forming a hard and wear-resistant layer. This treatment improves the hardness and fatigue strength of the steel, making it suitable for applications that require enhanced durability. 5. Phosphating: Phosphating is a chemical treatment that converts the surface of the carbon steel round bar into a layer of phosphate crystals. This treatment provides excellent corrosion resistance and also enhances the adhesion of coatings or paints applied to the steel. 6. Powder coating: Powder coating involves applying a dry powder to the surface of the carbon steel round bar and then curing it under heat to form a protective coating. Powder coatings offer excellent corrosion resistance, durability, and can be customized in various colors and finishes. These are just a few examples of the surface treatments available for carbon steel round bars. The choice of treatment depends on the specific requirements of the application, such as corrosion resistance, wear resistance, aesthetics, and cost-effectiveness.

Q: Can steel round bars be used for making automotive suspension systems?: Automotive suspension systems can indeed be made using steel round bars. These bars possess numerous advantages that render them suitable for this purpose. Primarily, steel is renowned for its exceptional strength and durability, two crucial characteristics for suspension components that must endure heavy loads and constant vibrations. Moreover, steel round bars offer superior stiffness and rigidity, allowing them to maintain the desired shape and functionality in diverse driving conditions. Additionally, steel is widely accessible and cost-effective, making it a favored option among automotive manufacturers. Furthermore, steel round bars can be easily machined and shaped into intricate forms, facilitating the production of suspension components with precise dimensions and specifications. In conclusion, steel round bars represent a dependable and pragmatic material for crafting automotive suspension systems.

Q: Can the same grade steel instead of round bar be ok?: Physical and mechanical properties are different. Because of the different chemical composition and strength of reinforcing steel, they are different in physical and mechanical properties. The cold bending property of steel is good, can make the hook 180, screw steel can only make straight hook 90 degrees; steel weldability is good, with ordinary carbon steel electrode can be used to low alloy electrode; anti fatigue performance and toughness in steel bar is good.

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: What is the difference between a bright and a rough turned steel round bar?: The primary differences between a bright turned steel round bar and a rough turned steel round bar lie in their surface finishes and the precision involved in their manufacturing processes. A bright turned steel round bar boasts a sleek and shiny surface finish. This is achieved by subjecting the bar to supplementary processes such as polishing or grinding after the initial turning operation. The bright surface finish not only enhances the bar's aesthetic appeal but also provides improved resistance against corrosion. Conversely, a rough turned steel round bar exhibits a more textured surface finish. It is typically obtained directly from the turning operation without any additional refining processes. The rough surface finish may display visible tool marks and a slightly uneven texture. Regarding manufacturing precision, a bright turned steel round bar tends to be more accurate and precise in terms of its dimensions and tolerances. The additional processes involved in attaining a bright surface finish also enable tighter control over the bar's specifications. As a result, bright turned bars are suitable for applications where precise dimensions and tolerances are crucial. In contrast, a rough turned steel round bar may have slightly looser tolerances due to the nature of the turning process and the absence of further refining operations. Nevertheless, rough turned bars can still meet the requirements of many applications that do not necessitate high precision. Ultimately, the choice between a bright turned steel round bar and a rough turned steel round bar hinges on the specific application and the desired surface finish and precision.

Q: What are the common defects found in steel round bars?: Some common defects found in steel round bars include surface cracks, internal voids, inclusions, segregation, and dimensional variations. Surface cracks can occur during the manufacturing process or due to improper handling and transportation. These cracks can weaken the structural integrity of the bar and reduce its load-bearing capacity. Internal voids, also known as blowholes or cavities, are void spaces within the steel that can be caused by trapped gases during the solidification process. These voids can negatively impact the mechanical properties of the bar and make it more susceptible to failure under stress. Inclusions are non-metallic particles or impurities that can be present in the steel. They can originate from the raw materials used in the production or from contaminants during the manufacturing process. Inclusions can reduce the strength and ductility of the steel and can become initiation sites for cracks. Segregation refers to the uneven distribution of elements within the steel. It can occur during the solidification process, resulting in areas of the bar with different chemical compositions. This can lead to variations in mechanical properties such as hardness and toughness, making the bar less consistent in its performance. Dimensional variations, such as out-of-roundness or variations in diameter, can also be considered defects. These variations can affect the fit and functionality of the bar in applications where precise dimensions are critical. It is important to identify and address these defects to ensure the quality and reliability of steel round bars, especially in applications where high strength and performance are required. Regular inspections, quality control measures, and adherence to industry standards and specifications can help minimize these defects and ensure the integrity of the steel round bars.

Send your message to us

*Email

*TEL

*Quantity

*Unit