HOT ROLLED ROUND BAR

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Loading Port:: China Main Port

Payment Terms:: TT OR LC

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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: What are the limitations of steel round bars?: There are several limitations associated with steel round bars, which are important to consider when selecting the appropriate material for a particular application. 1. Weight: Steel round bars can be quite heavy, especially in larger diameters. This can pose challenges when it comes to transportation and installation, particularly in situations where weight restrictions are a concern. 2. Corrosion: While steel is generally known for its strength and durability, it is susceptible to corrosion. When exposed to moisture or certain chemicals, steel round bars can rust and deteriorate over time. This limitation can be mitigated through the use of protective coatings or by opting for stainless steel round bars, which are more resistant to corrosion. 3. Machinability: Steel round bars can be difficult to machine due to their high hardness and strength. This can result in increased tool wear and reduced cutting speeds, leading to higher production costs and longer machining times. 4. Cost: Steel round bars, particularly those made from high-quality alloys, can be relatively expensive compared to other materials. This cost factor may limit their use in certain applications where budget constraints are a concern. 5. Design Flexibility: Steel round bars come in standard sizes and shapes, which may restrict design flexibility in some cases. If a specific shape or size is required, additional processing steps such as cutting or forging may be necessary, adding to the overall production cost. 6. Fatigue Strength: Although steel round bars have excellent strength properties, they can be prone to fatigue failure when subjected to repeated or cyclic loading. This limitation is particularly relevant in applications where the material is subjected to constant stress or vibration. Despite these limitations, steel round bars remain a popular choice in various industries due to their exceptional strength, reliability, and versatility. However, it is essential to consider these factors to ensure that the chosen material meets the specific requirements of the intended application.

Q: What is the density of a steel round bar?: The density of steel round bars can differ based on their specific types and compositions. On average, steel has a density of approximately 7.85 grams per cubic centimeter (g/cm³) or 7850 kilograms per cubic meter (kg/m³). Consequently, to determine the weight or mass of a steel round bar, one can multiply its volume by its density.

Q: Can steel round bars be used in the manufacturing of garden tools?: Yes, steel round bars can be used in the manufacturing of garden tools. Steel is a durable and robust material that offers strength and resistance, making it suitable for various garden tools such as shovels, rakes, hoes, and spades. The round bars can be shaped and formed to create the desired tool design and functionality, ensuring durability and longevity in outdoor conditions.

Q: Can steel round bars be used for making fasteners or bolts?: Yes, steel round bars can be used for making fasteners or bolts. Steel round bars are often used as raw materials for manufacturing fasteners and bolts due to their high strength, durability, and resistance to deformation. They can be shaped, threaded, and heat-treated to meet the specific requirements of fasteners and bolts.

Q: Are steel round bars suitable for decorative purposes?: Indeed, decorative purposes can be served by steel round bars. Steel, being a versatile and durable material, can be molded and crafted into numerous designs and patterns. The application of steel round bars extends to the creation of decorative elements like railings, furniture, sculptures, and architectural details. The polished and lustrous surface of steel contributes a contemporary and elegant touch to any area. Moreover, the strength and longevity associated with steel make it a pragmatic option for decorative endeavors, as it can endure environmental conditions and preserve its visual appeal throughout time.

Q: How do you determine the straightness of a steel round bar?: To determine the straightness of a steel round bar, there are several methods that can be used. One common method is visual inspection, where the bar is carefully examined for any visible bends, twists, or deviations from a straight line. This can be done by placing the bar on a flat surface and checking for any gaps or unevenness between the surface and the bar. Another method is to use a straightedge or a precision ruler. By placing the straightedge or ruler along the length of the bar, any deviations from a straight line can be easily detected. This method allows for more precise measurements and can help identify even slight bends or curves. Measuring devices such as dial indicators or laser alignment tools can also be used to determine the straightness of a steel round bar. These devices provide more accurate measurements and can quantify the degree of straightness by providing numerical readings of any deviations from a straight line. It is important to note that the acceptable level of straightness may vary depending on the specific application or industry standards. In such cases, specific tolerances or guidelines may need to be followed to ensure that the steel round bar meets the required straightness criteria. Overall, determining the straightness of a steel round bar requires careful visual inspection and the use of appropriate measuring tools to ensure that it meets the necessary straightness standards for its intended use.

Q: Are steel round bars suitable for bicycle frame applications?: Yes, steel round bars are suitable for bicycle frame applications. Steel is a popular material choice for bicycle frames due to its strength, durability, and versatility. Steel round bars provide excellent structural integrity, making them ideal for supporting the weight and stress placed on a bicycle frame during use. Additionally, steel is known for its high fatigue resistance, which means it can withstand repeated loading and unloading without losing its strength. Steel round bars also offer good weldability, allowing for easy construction and repair of bicycle frames. Overall, steel round bars are a reliable and practical choice for bicycle frame applications.

Q: What are the different types of steel round bars available in the market?: There are several different types of steel round bars available in the market, each with its own unique characteristics and applications. Some of the most common types include: 1. Mild Steel Round Bars: These are the most commonly used type of steel round bars due to their versatility and affordability. They have a low carbon content and are easy to weld and machine, making them suitable for a wide range of applications. 2. Carbon Steel Round Bars: Carbon steel round bars have a higher carbon content than mild steel, which gives them increased strength and hardness. They are commonly used in applications that require high strength, such as construction and machinery manufacturing. 3. Alloy Steel Round Bars: Alloy steel round bars are made by adding various alloying elements, such as chromium, nickel, or molybdenum, to improve their mechanical properties. These bars offer enhanced strength, toughness, and resistance to wear and corrosion, making them ideal for applications in the aerospace, automotive, and oil and gas industries. 4. Stainless Steel Round Bars: Stainless steel round bars are highly corrosion-resistant due to the presence of chromium, which forms a protective oxide layer on the surface. They are widely used in industries such as food processing, pharmaceuticals, and chemical processing, where resistance to corrosion and hygiene are crucial. 5. Tool Steel Round Bars: Tool steel round bars are specifically designed for tooling applications, such as cutting, drilling, and shaping materials. They have high hardness, wear resistance, and heat resistance, making them suitable for manufacturing tools and dies. 6. Duplex Steel Round Bars: Duplex steel round bars are a type of stainless steel that contains both austenitic and ferritic microstructures. They offer a combination of high strength, excellent corrosion resistance, and good weldability, making them ideal for applications in the chemical and petrochemical industries. These are just a few examples of the different types of steel round bars available in the market. The choice of the right type depends on the specific requirements of the application, including strength, corrosion resistance, machinability, and cost.

Q: Can steel round bars be used for making valves or fittings?: Yes, steel round bars can be used for making valves or fittings. Steel is a common material choice for valves and fittings due to its strength, durability, and resistance to corrosion. Steel round bars can be machined or forged into the desired shape for valves or fittings, ensuring that they meet the necessary specifications and requirements. Additionally, steel round bars can be heat-treated to enhance their mechanical properties and make them suitable for high-pressure or high-temperature applications. Overall, steel round bars are a versatile and reliable material option for manufacturing valves or fittings.

Q: What are the corrosion resistance properties of steel round bars?: Steel round bars have excellent corrosion resistance properties due to the presence of alloying elements such as chromium, nickel, and molybdenum. These elements form a protective oxide layer on the surface of the steel, which prevents the underlying metal from coming into contact with corrosive substances. The chromium in steel round bars reacts with oxygen in the air to form a thin, invisible layer of chromium oxide. This layer acts as a barrier, protecting the steel from further oxidation and corrosion. Nickel and molybdenum enhance the corrosion resistance of steel by increasing its resistance to pitting, crevice corrosion, and chloride-induced stress corrosion cracking. In addition to alloying elements, the manufacturing process can also affect the corrosion resistance of steel round bars. For instance, stainless steel round bars are often passivated, which involves the removal of free iron and other contaminants from the surface. Passivation enhances the corrosion resistance of the steel by creating a clean and inert surface that is less prone to corrosion. Overall, steel round bars are known for their excellent corrosion resistance properties, making them suitable for a wide range of applications in various industries, including construction, marine, automotive, and aerospace.

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