high quality steel low carbon round bar JIS

high quality steel low carbon round bar JIS System 1

high quality steel low carbon round bar JIS System 2

high quality steel low carbon round bar JIS System 3

high quality steel low carbon round bar JIS

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 5 m.t.

Supply Capability:: 1000 m.t./month

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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 are the advantages of using duplex steel round bars?: There are several advantages of using duplex steel round bars in various applications. Firstly, duplex steel round bars offer excellent corrosion resistance. This type of steel contains a balanced combination of chromium, nickel, and molybdenum, which enables it to withstand harsh environments, including marine and chemical industries. This corrosion resistance makes duplex steel round bars ideal for applications where exposure to corrosive elements is high. Secondly, duplex steel round bars possess high strength and toughness. The duplex microstructure of this steel combines both ferrite and austenite phases, resulting in a material with higher strength compared to traditional stainless steels. This enhanced strength and toughness make duplex steel round bars suitable for demanding applications that require high load-bearing capacities. Additionally, duplex steel round bars exhibit good fatigue resistance. This property makes them suitable for applications subjected to cyclic loading or dynamic stress, such as in structural components or machinery parts. The fatigue resistance of duplex steel allows for extended service life and reliability in such applications. Another advantage of using duplex steel round bars is their superior weldability. They offer good weldability due to their balanced chemical composition and microstructure. This makes it easier to fabricate and join duplex steel round bars, reducing production time and costs in various industries. Furthermore, duplex steel round bars have excellent resistance to stress corrosion cracking (SCC). SCC occurs when a material is exposed to a corrosive environment combined with tensile stresses, leading to premature failure. The ability of duplex steel to resist SCC makes it a preferred choice for applications where the risk of stress corrosion cracking is high, such as in offshore and oil and gas industries. Lastly, duplex steel round bars offer cost-effective solutions. Despite their superior properties, duplex steel round bars are often more cost-effective than other high-performance materials. Their long service life, reduced maintenance requirements, and overall durability contribute to lower lifecycle costs, making them an economical choice for various applications. In summary, the advantages of using duplex steel round bars include excellent corrosion resistance, high strength and toughness, good fatigue resistance, superior weldability, resistance to stress corrosion cracking, and cost-effectiveness. These properties make duplex steel round bars a preferred choice for a wide range of industries, including oil and gas, chemical processing, marine, and structural applications.

Q:Can steel round bars be used in the production of agricultural equipment?: Yes, steel round bars can be used in the production of agricultural equipment. Steel round bars are known for their strength, durability, and versatility, making them suitable for various applications, including agricultural equipment manufacturing. They can be used for constructing frames, supports, axles, and other components that require high strength and resistance to wear and tear.

Q:Can steel round bars be used for making turbine blades?: No, steel round bars cannot be used for making turbine blades. Turbine blades are subjected to high temperatures, extreme forces, and require high levels of durability and flexibility. Steel round bars do not possess the necessary properties to withstand these conditions. Turbine blades are typically made from materials such as titanium alloys or advanced composites that offer high strength-to-weight ratios, excellent fatigue resistance, and thermal stability. These materials are specifically engineered to withstand the demanding conditions of turbine operations, ensuring efficient and reliable performance.

Q:Can steel round bars be used in the automotive parts industry?: Indeed, the automotive parts industry does make use of steel round bars. These bars, renowned for their remarkable strength, resilience, and ability to withstand wear and tear, are frequently employed in the production of diverse automotive components. By shaping and sizing these bars to suit the specific needs of axles, drive shafts, suspension components, steering components, and gears, manufacturers ensure that automotive parts are crafted to the highest standards. The utilization of steel round bars guarantees the structural soundness and dependability of these components, rendering them perfectly equipped to endure the rigorous conditions and burdens encountered in the automotive sector.

Q:How do you straighten steel round bars?: Steel round bars can be straightened by using a hydraulic straightening press or by applying heat and pressure to the bent section until it regains its original shape.

Q:How do steel round bars compare to brass round bars?: Steel round bars and brass round bars have several key differences that make them suitable for different applications. Firstly, steel round bars are much stronger and more durable compared to brass round bars. Steel has a higher tensile strength, making it ideal for applications that require high strength and resistance to heavy loads. It is commonly used in construction, manufacturing, and automotive industries where strength and durability are crucial. On the other hand, brass round bars are known for their excellent corrosion resistance and electrical conductivity. Brass is an alloy of copper and zinc, which gives it a unique combination of properties. It is often used in applications that require good electrical conductivity, such as electrical connectors, plumbing fittings, and musical instruments. Brass also has an attractive golden appearance, making it a popular choice for decorative purposes. In terms of cost, steel round bars are generally more affordable compared to brass round bars. Steel is widely available and produced in large quantities, resulting in a lower cost per unit. Brass, being an alloy of copper, which is a relatively expensive metal, is generally more expensive. Another important factor to consider is machinability. Steel round bars are generally easier to machine and work with compared to brass round bars. Steel has good cutting and drilling properties, making it easier to fabricate into various shapes and sizes. Brass, on the other hand, tends to have a higher machinability rating, meaning it is easier to cut and shape compared to other metals. In summary, steel round bars are stronger, more durable, and generally more affordable than brass round bars. They are suitable for applications that require high strength and resistance to heavy loads. Brass round bars, on the other hand, offer excellent corrosion resistance, electrical conductivity, and an attractive appearance. They are commonly used in applications that require good electrical conductivity and for decorative purposes. The choice between steel and brass round bars ultimately depends on the specific requirements of the application.

Q:What is the typical tolerance for diameter and length in steel round bars?: The typical tolerance for diameter in steel round bars is usually +/- 0.005 inches, while the tolerance for length is typically +/- 0.125 inches.

Q:How are steel round bars used in the mining industry?: The mining industry extensively utilizes steel round bars for various purposes. Underground support systems heavily rely on these bars, commonly employed as roof bolts or rock bolts, to prevent cave-ins or roof falls. In the manufacturing of drilling equipment, steel round bars are frequently transformed into drill rods or drill bits. This conversion allows them to endure the challenging conditions associated with mining operations. The bars are typically subjected to heat treatment to enhance hardness and resistance to wear, ensuring their durability during drilling processes. Within the mining field, steel round bars have another significant application in the production of grinding media for grinding mills. Termed grinding rods, these bars consist of high-quality steel and possess specific hardness and toughness. Their function is to effectively reduce ore particles into smaller sizes, facilitating the extraction of valuable minerals. Furthermore, steel round bars contribute to the construction of conveyor systems in mining operations. They are commonly employed as support bars or rollers in conveyor belts, ensuring the efficient transportation of mined materials from one location to another. To summarize, steel round bars hold a crucial position in the mining industry. Their diverse applications, ranging from providing support in underground mines to manufacturing drilling equipment and grinding media, contribute to the overall efficiency and productivity of mining operations.

Q:What is the difference between a bright and a cold finished steel round bar?: A bright steel round bar and a cold finished steel round bar are two distinct types of steel bars that differ in their manufacturing processes and resulting characteristics. A bright steel round bar, also known as a turned or polished bar, undergoes a process called turning or polishing. During this process, the rough steel bar is rotated on a lathe machine and a cutting tool is applied to remove the outer layer of the bar, resulting in a smooth and shiny surface. This process not only enhances the appearance of the bar but also improves its dimensional accuracy and surface finish. Bright steel round bars are commonly used in applications where aesthetics and a high-quality surface finish are important, such as architectural components, decorative items, and certain automotive parts. On the other hand, a cold finished steel round bar undergoes a different manufacturing process called cold drawing or cold rolling. In this process, the hot-rolled steel bar is passed through a series of dies at room temperature, reducing its diameter and increasing its length. This cold working process gives the steel bar improved mechanical properties, such as increased tensile strength, improved yield strength, and enhanced dimensional accuracy. Cold finished steel round bars are often used in applications that require high strength and precision, such as shafts, gears, bolts, and tools. In summary, the main difference between a bright steel round bar and a cold finished steel round bar lies in their manufacturing processes and resulting characteristics. While a bright steel round bar is turned or polished to achieve a smooth and shiny surface, a cold finished steel round bar undergoes cold drawing or rolling to enhance its mechanical properties and dimensional accuracy. The choice between these two types of steel bars depends on the specific requirements of the application, such as the need for aesthetics, surface finish, strength, or precision.

Q:What are the advantages of using phosphorus-alloy steel round bars?: Phosphorus-alloy steel round bars possess several advantages: 1. Greater strength: These bars exhibit higher tensile strength in comparison to standard steel bars. This increased strength makes them ideal for applications necessitating a greater load-bearing capacity, such as the construction and automotive industries. 2. Heightened corrosion resistance: Phosphorus-alloy steel demonstrates superior resistance to corrosion when compared to regular steel. Consequently, it boasts improved durability and longevity, particularly in environments with high moisture content or exposure to chemicals. 3. Enhanced machinability: Phosphorus-alloy steel showcases excellent machinability, enabling it to be easily shaped, cut, and formed into various designs or structures. This characteristic makes it the favored choice for industries requiring precision shaping, such as manufacturing and engineering. 4. Diminished brittleness: Phosphorus-alloy steel manifests a lower degree of brittleness in contrast to other steel types. Therefore, it is less prone to breaking or fracturing under sudden impacts or stress, rendering it a safer option for applications where structural integrity is paramount. 5. Cost-effectiveness: Despite its enhanced properties, phosphorus-alloy steel round bars remain cost-effective when compared to other specialty alloys. This affordability renders them a more economical choice for industries seeking high-performance materials without exceeding their budget. 6. Improved weldability: Phosphorus-alloy steel round bars exhibit exceptional weldability, facilitating easy and secure welding connections. This attribute makes them suitable for applications necessitating strong and reliable welded joints, such as construction or fabrication projects. In conclusion, phosphorus-alloy steel round bars offer increased strength, heightened corrosion resistance, enhanced machinability, diminished brittleness, cost-effectiveness, and improved weldability. These advantages establish them as the favored choice for various industries that require high-performance materials.

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