hot rolled round bar steel

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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:What is the difference between a smooth and a precision ground steel round bar?: A smooth steel round bar refers to a steel rod that has a plain surface without any specific surface treatment or finishing process. It is typically produced through hot rolling or cold drawing methods, resulting in a basic cylindrical shape with a relatively rough surface texture. Smooth steel round bars are commonly used in various applications where a smooth exterior finish is not a critical requirement. On the other hand, a precision ground steel round bar undergoes an additional manufacturing process to achieve a more precise and refined surface finish. The precision grinding process involves removing any imperfections or irregularities from the surface of the steel rod, resulting in a highly smooth and polished finish. This process ensures that the diameter of the round bar remains consistent along its length and that the surface has a superior level of finish and accuracy. Precision ground steel round bars are widely used in applications that demand tight tolerances, precision machining, or where a smooth and polished surface is essential. Industries such as aerospace, automotive, tooling, and manufacturing often rely on precision ground steel round bars for their high-quality surface finish, dimensional accuracy, and reliable performance. In summary, the main difference between a smooth and a precision ground steel round bar lies in the surface finish and level of precision achieved. While a smooth steel round bar has a basic, rough surface texture and is suitable for general applications, a precision ground steel round bar undergoes additional grinding processes to achieve a highly smooth, polished, and accurate surface finish, making it ideal for applications requiring tight tolerances and precision machining.

Q:Can steel round bars be used in the manufacturing of machinery?: Yes, steel round bars can definitely be used in the manufacturing of machinery. Steel round bars are widely used in various industries for their strength, durability, and versatility. They are commonly used to create components such as shafts, axles, gears, and other mechanical parts that require high strength and resistance to wear and tear. Steel round bars offer excellent mechanical properties, including high tensile strength and good machinability, which make them suitable for use in heavy machinery and equipment. Additionally, steel round bars can be easily welded, forged, or machined into the desired shape, making them a preferred choice for manufacturing machinery.

Q:Can steel round bars be used for making decorative items?: Certainly, decorative items can indeed be created using steel round bars. With their ability to be shaped, bent, and welded, steel round bars offer a wide range of options for designing various decorative patterns. They possess durability and strength, making them suitable for both indoor and outdoor uses. Decorative furniture, sculptures, railings, gates, light fixtures, and many other items can be crafted from steel round bars. Their sleek and contemporary appearance adds an industrial and modern touch to any space. Furthermore, steel round bars can be finished with different coatings or treatments, such as powder coating or patina, to enhance their visual appeal and protect against corrosion. Consequently, steel round bars are an exceptional choice for creating decorative items because of their versatility, strength, and ability to infuse a stylish and distinctive element into any design.

Q:What is the maximum carbon content allowed for steel round bars?: The carbon content allowed for steel round bars can vary depending on the specific grade or specification of steel used. However, most standard steel round bars typically have a carbon content ranging from approximately 0.25% to 0.30%. This carbon content level helps maintain a balance between strength and ductility, ensuring that the steel is sufficiently strong for load-bearing applications while also being easily formable or machinable. It is crucial to note that certain specialized steels or specific applications may have distinct maximum carbon content requirements. Therefore, it is always necessary to refer to the relevant specifications or standards for precise and accurate information.

Q:Which steel wire is the same diameter as round steel more resistant to breaking?: Round bar is divided into three parts: hot rolling, forging and cold drawing. Standard Specification for hot rolled round steel is 5.5-250 mm. Of which: 5.5-25 mm of small round bars, mostly straight line bundles of supplies, commonly used as steel, bolts and various mechanical parts; more than 25 millimeters of round steel.

Q:Are steel round bars suitable for heat exchanger applications?: Heat exchanger applications can benefit from the use of steel round bars. Steel is a widely utilized material in various industries, including heat exchangers, because of its exceptional thermal conductivity and strength. The round shape of the bars simplifies their fabrication and installation in heat exchanger systems. For applications requiring heat exchange, like power plants, chemical processes, HVAC systems, and refrigeration units, steel round bars are ideal as they efficiently transfer heat between two fluids. Moreover, steel provides good corrosion resistance, which is crucial for heat exchangers that encounter different fluids. By implementing proper design and material selection, steel round bars can reliably withstand high temperatures and pressure differentials in heat exchanger applications.

Q:Can steel round bars be welded?: Steel round bars can indeed be welded, as welding is a widely employed technique for connecting them. This involves heating the bars to a considerable temperature and subsequently applying pressure to fuse them, resulting in robust and long-lasting connections. Nonetheless, it is crucial to utilize suitable welding techniques and equipment in order to attain a weld of superior quality.

Q:Can steel round bars be used for making molds?: Steel round bars can be used for making molds, but it may not be the most common or ideal choice of material. Steel round bars are typically used for structural applications or as support components. When it comes to making molds, other materials such as silicone, aluminum, or even specific types of steel molds are typically preferred. These materials offer better heat resistance, flexibility, and ease of use for molding purposes. That being said, if the steel round bars are properly machined, shaped, and treated, they can still be used to create simple molds for certain applications. However, it is important to consider the specific requirements of the mold, including the material being molded, the temperature and pressure conditions, and the desired finish of the final product, before deciding on the use of steel round bars.

Q:Can steel round bars be painted?: Steel round bars can indeed be painted in order to protect them from corrosion and improve their appearance. However, prior to painting, it is crucial to properly prepare the surface of the steel round bars by thoroughly cleaning, degreasing, and eliminating any rust or mill scale. This can be accomplished through various methods such as sandblasting, wire brushing, or chemical cleaning. Once the surface is adequately prepared, it is necessary to apply a primer specifically formulated for steel to enhance the adhesion of the paint. Subsequently, the desired paint can be applied to the steel round bars using brushes, rollers, or spray equipment. It is essential to select a paint that is suitable for outdoor use and offers ample protection against harsh weather conditions. To ensure the long-lasting durability of the painted steel round bars, regular maintenance and periodic repainting may be necessary.

Q:What are the advantages of using nickel-molybdenum-chromium alloy steel round bars?: Nickel-molybdenum-chromium alloy steel round bars offer several advantages. Firstly, they exhibit excellent corrosion resistance due to the addition of nickel and chromium. This enhances their ability to withstand oxidation and various corrosive environments, making them ideal for applications where exposure to moisture or chemicals is a concern. Secondly, the inclusion of molybdenum in the alloy strengthens and toughens it. This makes the nickel-molybdenum-chromium alloy steel round bars suitable for high-stress applications, such as in the construction of heavy machinery or structures that require durability and resistance to wear and tear. In addition, this alloy steel demonstrates exceptional heat resistance. It can endure high temperatures without compromising its structural integrity, making it suitable for applications involving extreme heat, such as in the aerospace or power generation industries. Furthermore, nickel-molybdenum-chromium alloy steel round bars possess good weldability, allowing for ease of fabrication and versatility in various manufacturing processes. This makes them a preferred choice for engineers and manufacturers who require a material that can be easily formed or joined to create complex shapes or structures. Lastly, the nickel content in this alloy steel provides excellent resistance to cracking and brittleness, ensuring long-lasting reliability. This guarantees that the round bars will maintain their strength and structural integrity over an extended period, minimizing the risk of failure or breakage in critical applications. Overall, nickel-molybdenum-chromium alloy steel round bars offer enhanced corrosion resistance, improved strength and toughness, excellent heat resistance, good weldability, and high reliability. These qualities make them a preferred choice for a wide range of applications in industries such as construction, manufacturing, and aerospace.

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