Round bar

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Loading Port:: China Main Port

Payment Terms:: TT OR LC

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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:What is the difference between a solid and a hollow steel round bar?: A cylindrical bar made entirely of solid steel material is called a solid steel round bar. It is completely filled and does not have any empty spaces inside. On the other hand, a hollow steel round bar is also cylindrical but has a hollow center, meaning there is empty space or a void within the bar. The primary distinction between a solid and a hollow steel round bar is their structural composition and the roles they fulfill. A solid steel round bar is typically used in applications where strength and durability are of utmost importance. It is commonly employed in construction, manufacturing, and engineering projects that require load-bearing capacity. Conversely, a hollow steel round bar is designed to be lighter in weight while still maintaining structural integrity. The hollow center allows for weight reduction while still providing sufficient strength for various applications. Hollow steel round bars are often utilized in industries such as aerospace, automotive, and marine, where reducing weight is crucial for enhanced fuel efficiency and overall performance. Furthermore, the empty space inside a hollow steel round bar also presents an opportunity for customization. It can be utilized to house other components, such as wires or piping, enabling a more streamlined and efficient design. This versatility makes hollow steel round bars suitable for various applications that necessitate both strength and weight reduction. In conclusion, the main difference between a solid and a hollow steel round bar lies in their structural composition and the roles they fulfill. Solid steel round bars are employed in applications that demand maximum strength and durability, while hollow steel round bars offer weight reduction and customization options, making them suitable for applications that prioritize lightweight design without compromising structural integrity.

Q:What are the different surface defects that can occur in steel round bars?: Some common surface defects that can occur in steel round bars include scratches, dents, pits, cracks, and scales. These defects can affect the overall integrity and quality of the steel and may need to be addressed or repaired before the bars can be used in various applications.

Q:How many tons of pressure can the round steel of 70 inches bear?: If the steel will generally approximate compressive strength considering tensile strength, even if is only 4 tons / square centimeters, each round cross section of 26 mm diameter is 5.3 cm, maximum 5.3*4 about 20 tons of pressure, the actual use should take into account the safety factor;

Q:What is the difference between a cold finished and a hot rolled steel round bar?: The main difference between a cold finished and a hot rolled steel round bar lies in the manufacturing process. Cold finished steel round bars undergo a process called cold drawing, where they are pulled through a die at room temperature to achieve the desired shape and size. This process enhances the precision and surface finish of the steel, resulting in a smoother and more polished appearance. On the other hand, hot rolled steel round bars are formed by heating the steel billet or ingot to high temperatures and rolling it through a series of rollers, which creates the desired shape. Hot rolled steel round bars typically have a rougher surface texture and may contain imperfections due to the rapid cooling process. Overall, cold finished steel round bars are known for their superior dimensional accuracy and surface quality, while hot rolled steel round bars are more cost-effective and suitable for applications where a smooth finish is not critical.

Q:Can steel round bars be used in the production of agricultural machinery?: Indeed, the utilization of steel round bars is applicable in the fabrication process of agricultural machinery. Owing to their robustness, longevity, and adaptability, steel round bars are frequently employed in the creation of diverse agricultural machinery elements and constituents. These bars serve as ideal materials for constructing pivotal parts like axles, shafts, gears, and brackets, which are indispensable for the smooth functioning of agricultural machinery. It is worth noting that steel round bars can be effortlessly machined and welded to meet precise design prerequisites, rendering them an optimal selection for manufacturers involved in agricultural machinery production.

Q:What are the different heat treatment processes used for steel round bars?: Steel round bars can undergo several heat treatment processes to enhance their mechanical properties and overall performance. These processes include annealing, normalizing, quenching, tempering, and case hardening. 1. Annealing involves heating the steel round bars to a specific temperature and then slowly cooling it to relieve internal stresses and improve ductility. It also refines the grain structure, making the steel softer and more workable. 2. Normalizing is similar to annealing, but the steel round bars are cooled in still air. This process refines the grain structure and improves mechanical properties like strength and toughness. 3. Quenching is a rapid cooling process where the steel round bars are immersed in a quenching medium such as oil, water, or polymer. It achieves high hardness and strength by transforming the steel's microstructure into martensite. However, it can also make the steel more brittle, so tempering is often done afterward. 4. Tempering involves reheating the quenched steel round bars to a specific temperature and then slowly cooling it. This process reduces the brittleness caused by quenching and improves toughness and ductility. The temperature and duration of tempering can be adjusted for desired mechanical properties. 5. Case hardening is a surface heat treatment process that increases hardness and wear resistance. Carbon or other alloying elements are introduced to the steel's surface, which is then heated to a specific temperature. This creates a hardened outer layer while maintaining a tough core. These heat treatment processes offer steel round bars a wide range of mechanical properties and performance characteristics, making them suitable for various applications in industries like automotive, construction, manufacturing, and aerospace. The choice of specific heat treatment process depends on desired properties, steel composition, and intended application of the round bars.

Q:Can steel round bars be welded?: Yes, steel round bars can be welded.

Q:What is the difference between a polished and a cold drawn steel round bar?: A polished steel round bar is a steel bar that has undergone a polishing process. This process involves using abrasive materials to remove any surface imperfections and create a smooth, shiny finish. The purpose of polishing is to enhance the visual appearance and corrosion resistance of the steel bar. It is commonly used for decorative or architectural purposes where aesthetics are important. On the other hand, a cold drawn steel round bar is produced using a different manufacturing process. In this method, a steel bar is pulled through a die at room temperature to reduce its diameter and increase its length. This process results in a bar with a more precise and uniform diameter, as well as improved mechanical properties such as higher tensile strength and dimensional accuracy. Cold drawing also improves the surface finish, although it may not achieve the same level of smoothness and shine as a polished bar. In summary, the main distinction between a polished and a cold drawn steel round bar lies in the manufacturing process and the resulting properties. Polishing is done for aesthetic purposes, creating a smooth and shiny finish. On the other hand, cold drawing is performed to enhance the dimensional accuracy and mechanical properties of the steel bar.

Q:Can steel round bars be used for making security grilles?: Yes, steel round bars can be used for making security grilles. The strength and durability of steel make it an excellent choice for security applications, providing protection and ensuring the safety of premises.

Q:What are the different surface finishes for stainless steel round bars?: Stainless steel round bars can have different surface finishes depending on the desired aesthetic appeal and functional requirements. Some of the common surface finishes for stainless steel round bars include: 1. Bright Annealed (BA): This is a smooth and highly reflective finish achieved by annealing in a controlled atmosphere. It provides a mirror-like appearance and is often used for decorative applications. 2. Mill Finish: Also known as hot rolled or hot-rolled annealed and pickled (HRAP), this is the untreated surface finish directly from the mill. It has a rough and pitted texture and is commonly used for industrial applications where appearance is not the primary concern. 3. Satin Finish: Also referred to as brushed or dull polished finish, this finish is achieved by brushing the surface of the stainless steel round bar with a fine abrasive material. It creates a soft and matte appearance with visible parallel lines. 4. Polished Finish: This finish is achieved by using progressively finer abrasive materials to polish the surface of the stainless steel round bar. It results in a high-gloss, mirror-like finish that is commonly used for decorative purposes. 5. Ground Finish: This finish is achieved by grinding the surface of the stainless steel round bar using abrasive belts or wheels. It creates a uniform and smooth surface with a matte appearance. 6. Bead Blasted Finish: This finish is achieved by bombarding the surface of the stainless steel round bar with small glass beads at high pressure. It creates a uniform and matte appearance with a slightly textured feel. 7. Electropolished Finish: This finish is achieved by immersing the stainless steel round bar in an electrolytic bath and applying an electric current. It removes a thin layer of material, resulting in a smooth and shiny surface with improved corrosion resistance. Each surface finish has its own unique characteristics and is chosen based on the specific requirements of the application.

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