HOT ROLLED ROUND BAR

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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:Are steel round bars suitable for the production of hydraulic cylinders?: Steel round bars are indeed appropriate for manufacturing hydraulic cylinders. Steel is renowned for its robustness, longevity, and resistance to corrosion, thus making it an exceptional option for hydraulic purposes. Due to their exceptional tensile strength and capacity to endure substantial loads and pressure, steel round bars are frequently employed in the construction of hydraulic cylinders. Furthermore, steel can be effortlessly machined and welded, enabling accurate production and customization of hydraulic cylinders. In summary, steel round bars possess the essential attributes and capabilities needed for manufacturing hydraulic cylinders.

Q:Can steel round bars be used in the manufacturing of springs?: Indeed, the utilization of steel round bars in the production of springs is possible. Steel, being a prevalent material in spring manufacturing, is favored for its remarkable attributes including remarkable strength, endurance, and flexibility. By employing diverse manufacturing techniques like hot rolling, cold drawing, or machining, steel round bars can be skillfully transformed and molded into the desired spring shape. The selection of the precise type of steel round bar relies on the application and specific characteristics sought after for the spring, such as the desired level of rigidity or resilience. All in all, steel round bars are extensively employed and deemed as a dependable option for spring production.

Q:What are the different types of surface treatments for steel round bars?: There are several different types of surface treatments available for steel round bars, each with its own benefits and applications. Some of the most common surface treatments for steel round bars include: 1. Galvanization: This process involves coating the steel round bars with a layer of zinc, which provides excellent corrosion resistance. Galvanized steel round bars are commonly used in outdoor and marine applications. 2. Black oxide coating: This treatment involves chemically converting the surface of the steel round bars to a black iron oxide layer. It provides increased corrosion resistance and a visually appealing black finish. Black oxide coated steel round bars are often used in decorative applications. 3. Grinding: Grinding is a surface treatment that involves removing the outer layer of the steel round bars through abrasive materials. This process improves the surface finish of the bars, making them smoother and more aesthetically pleasing. 4. Shot blasting: In shot blasting, small metallic or non-metallic particles are propelled at high velocity onto the surface of the steel round bars. This treatment removes mill scale, rust, and other impurities, resulting in a clean and uniform surface. 5. Chrome plating: Chrome plating involves depositing a layer of chromium onto the surface of the steel round bars. This treatment provides excellent corrosion resistance and a polished, mirror-like finish. Chrome plated steel round bars are commonly used in applications where aesthetics and corrosion resistance are important. 6. Powder coating: Powder coating is a process where a dry powder is applied electrostatically to the steel round bars and then cured under heat. This treatment creates a durable and attractive finish, offering resistance to corrosion, chemicals, and UV rays. 7. Passivation: Passivation is a chemical treatment that removes iron and other contaminants from the surface of steel round bars, leaving a clean and corrosion-resistant layer. This treatment is commonly used in the medical and food industries, where cleanliness and corrosion resistance are crucial. These are just a few examples of the various surface treatments available for steel round bars. The choice of treatment depends on the specific requirements of the application, such as corrosion resistance, aesthetics, and durability.

Q:What are the different marking methods for steel round bars?: The different marking methods for steel round bars include stamping, engraving, etching, laser marking, and inkjet printing. These methods are used to imprint important information such as the grade, size, heat number, manufacturer's logo, and other specifications on the surface of the round bars.

Q:How is the weight of a steel round bar calculated?: To determine the weight of a steel round bar, one must employ a formula that incorporates the bar's diameter, length, and the density of the steel variant in question. The formula is as follows: Weight = (π/4) x (diameter)^2 x length x density Within this formula, the symbol π denotes the mathematical constant pi (approximately 3.14159), the diameter signifies the measurement across the broadest point of the round bar, the length refers to the measurement from one end of the bar to the other, and the density pertains to the mass per unit volume of the specific steel type. By substituting the values of diameter, length, and density into this formula, it becomes possible to compute the weight of a steel round bar. It is important to note that the weight will be expressed in units of mass, such as kilograms or pounds, depending on the adopted system of measurement.

Q:What are the advantages of using spring steel round bars?: Spring steel round bars have numerous advantages: 1. Exceptional strength: Known for their high strength, these round bars can withstand extreme stress and strain. They are perfect for applications that require durable and strong materials. 2. Remarkable flexibility: These round bars are incredibly flexible and can be easily shaped, bent, or formed without losing their strength. This quality makes them suitable for a wide range of manufacturing processes. 3. Superior elasticity: With excellent elasticity, these round bars can return to their original shape after being deformed or stressed. This elasticity is crucial for applications that require shock or vibration absorption. 4. Fatigue resistance: These round bars are highly resistant to fatigue and can endure repeated cycles of loading and unloading without losing their mechanical properties. This reliability and longevity make them ideal for demanding applications. 5. Exceptional toughness: Spring steel round bars exhibit outstanding toughness, enabling them to withstand sudden impacts or heavy loads without breaking or fracturing. They are perfect for harsh environments or heavy-duty operations. 6. Corrosion resistance: Many spring steel round bars are made from corrosion-resistant alloys, protecting them against rust and other forms of corrosion. They are ideal for applications where moisture or corrosive substances are present. 7. Cost-effective: Compared to other types of steel or materials, spring steel round bars offer a cost-effective solution. Their durability and longevity reduce the need for frequent replacements, resulting in long-term cost savings. In conclusion, spring steel round bars have numerous advantages, including high strength, flexibility, superior elasticity, resistance to fatigue, exceptional toughness, corrosion resistance, and cost-effectiveness. These properties make them a preferred choice in various industries such as automotive, construction, manufacturing, and aerospace.

Q:Why can't the grounding device be replaced by steel bar instead of round steel?: The mechanical strength of the steel thread is destroyed. Because the supporting point is only the ground, it is easy to cut the steel directly if the thread is not vertical. Therefore, we need to use angle iron, steel pipe or smooth steel round bar.

Q:What are the different types of steel alloys used for round bars?: There are various types of steel alloys used for round bars, including carbon steel, stainless steel, alloy steel, tool steel, and high-speed steel. Each type has unique properties and characteristics that make it suitable for different applications. Carbon steel is widely used for its strength and affordability, while stainless steel offers excellent corrosion resistance. Alloy steel is known for its durability and versatility, while tool steel is specifically designed for cutting and shaping tools. High-speed steel is used for its ability to withstand high temperatures and retain its hardness.

Q:What are the different types of steel round bars used in the defense industry?: There are several different types of steel round bars that are commonly used in the defense industry. These materials are specifically chosen for their strength, durability, and ability to withstand harsh conditions. Some of the most commonly used steel round bars in the defense industry include: 1. High-strength low-alloy (HSLA) steel round bars: These bars are known for their high strength-to-weight ratio, making them ideal for applications where weight reduction is important. HSLA steel round bars are often used in the construction of armored vehicles, tanks, and other military equipment. 2. Stainless steel round bars: Stainless steel is highly resistant to corrosion and rust, making it an excellent choice for defense applications where exposure to moisture or harsh environments is common. Stainless steel round bars are frequently used in the manufacturing of military aircraft, naval vessels, and firearms. 3. Carbon steel round bars: Carbon steel is a versatile and cost-effective material that is widely used in the defense industry. It offers excellent strength and hardness, making it suitable for various applications such as missile components, gun barrels, and armor plates. 4. Alloy steel round bars: Alloy steel is a combination of different metals, typically including chromium, molybdenum, and nickel, which enhances its mechanical properties. Alloy steel round bars are commonly utilized in the production of military-grade vehicles, artillery systems, and munitions. 5. Tool steel round bars: Tool steel is specifically designed to have exceptional hardness, wear resistance, and toughness. It is often used for manufacturing cutting tools, drills, and other equipment used in the defense industry. Each type of steel round bar has its own unique properties and advantages, allowing it to fulfill specific requirements in the defense sector. The selection of the appropriate steel round bar depends on the specific application and the desired performance characteristics needed to meet the demands of the defense industry.

Q:How do you calculate the cross-sectional area of a steel round bar?: In order to determine the cross-sectional area of a steel round bar, it is necessary to possess knowledge of either its diameter or radius. The formula for calculating the cross-sectional area of a circle is A = πr^2, wherein A represents the area and r denotes the radius of the circle. When provided with the diameter of the round bar, one can simply divide it by 2 to obtain the radius. Once the radius is ascertained, it can be substituted into the formula to compute the cross-sectional area. It is important to bear in mind that the value of π is approximately 3.14159.

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