• Round bar Q235 ou Q195 5MM-100MM hot rolled System 1
  • Round bar Q235 ou Q195 5MM-100MM hot rolled System 2
  • Round bar Q235 ou Q195 5MM-100MM hot rolled System 3
Round bar Q235 ou Q195 5MM-100MM hot rolled

Round bar Q235 ou Q195 5MM-100MM hot rolled

Ref Price:
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Loading Port:
Shanghai
Payment Terms:
TT OR LC
Min Order Qty:
25 m.t.
Supply Capability:
20000 m.t./month

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ROUND BAR Details:

Minimum Order Quantity:Unit:m.t.Loading Port:
Supply Ability:Payment Terms:Package:wire bundle

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

 

 

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%

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 tensile strength of a steel round bar?
The tensile strength of a steel round bar depends on various factors such as the specific grade of steel, the manufacturing process, and any additional treatments or coatings applied. Generally, steel round bars have high tensile strength due to their composition and structural design. The specific tensile strength can vary significantly depending on the grade of steel. For example, low carbon steel typically has a tensile strength of around 400-550 MPa (megapascals), while high carbon steel can have a tensile strength of 700-1000 MPa or even higher. It's worth noting that the tensile strength of a steel round bar can be further enhanced by heat treatment processes such as quenching and tempering, which can significantly increase its strength and hardness. Additionally, certain alloying elements like chromium, nickel, and molybdenum can be added to steel to improve its tensile strength and other mechanical properties. To determine the exact tensile strength of a specific steel round bar, it is crucial to refer to the manufacturer's specifications or consult relevant industry standards such as ASTM (American Society for Testing and Materials) or AISI (American Iron and Steel Institute) standards. These standards provide detailed information on the mechanical properties, including tensile strength, for various grades of steel.
Q:Are steel round bars resistant to fire?
Steel round bars are highly resistant to fire. Steel is known for its excellent fire resistance properties due to its high melting point and low thermal conductivity. In the event of a fire, steel round bars will not easily ignite or burn. Additionally, steel's structural integrity remains intact even at high temperatures, making it a preferable choice for construction materials in fire-prone areas. This resistance to fire makes steel round bars a reliable and safe option for various applications, including building structures, industrial equipment, and fire-resistant barriers.
Q:20 round bars are of several grades
No. 20 cold drawn steel belongs to high quality low carbon steel, cold extrusion, carburizing hardened steel. The steel has low strength, toughness, plasticity and weldability. The tensile strength is 355-500MPa, elongation is greater than or equal to 24%.
Q:Can steel round bars be used in the manufacturing of valves?
Yes, steel round bars can be used in the manufacturing of valves. Steel round bars are commonly used in valve manufacturing due to their high strength, durability, and corrosion resistance. The round bars can be machined and forged into various valve components such as stems, bodies, and discs. Steel round bars also provide excellent mechanical properties, ensuring the valves can withstand high pressure and temperature conditions. Additionally, steel round bars can be easily welded or threaded to connect different valve parts together. Overall, steel round bars are a reliable and popular material choice for valve manufacturing.
Q:Can steel round bars be used for making crankshafts?
Yes, steel round bars can be used for making crankshafts. Steel is a commonly used material for crankshafts due to its high strength, durability, and ability to withstand the stresses and strains of engine operation. The round bars can be machined and shaped to the required specifications to create a reliable and functional crankshaft.
Q:How do you know the diameter and weight of a round bar?
Round is a round, the quality of its G (in grams) is equal to the volume multiplied by the density of 7.85 steel, and its volume is equal to the bottom area multiplied by the degree of L (in cm), then the bar diameter of d=4 * G / L / 7.85 / 3.14 value points
Q:Can steel round bars be used for making conveyor belts?
No, steel round bars are not typically used for making conveyor belts. Conveyor belts are usually made from materials such as rubber or fabric, which provide flexibility and durability necessary for conveying items efficiently.
Q:Are steel round bars suitable for food processing applications?
Due to its numerous desirable properties, steel round bars are widely utilized in food processing applications. The durability of steel allows it to withstand heavy usage and frequent cleaning in food processing environments, making it an excellent choice for equipment like conveyor belts, mixers, and cutting tools. Moreover, steel round bars exhibit resistance to corrosion, a crucial characteristic for food processing applications that often involve exposure to moisture and various chemicals. This resistance ensures that the equipment remains hygienic and safe for food production. Additionally, steel round bars can be easily machined and fabricated into different shapes and sizes, making them highly versatile for fulfilling various food processing needs. They can be utilized to create custom equipment or components that meet specific requirements, thereby ensuring efficient and effective food processing operations. Furthermore, steel proves to be a cost-effective material for food processing applications. It offers remarkable value for money, delivering long-lasting performance, requiring minimal maintenance, and being readily available in the market. Nevertheless, it is important to note that not all steel round bars are suitable for food processing applications. In this industry, stainless steel is the most commonly used type of steel due to its enhanced corrosion resistance and hygienic properties. Consequently, when selecting steel round bars for food processing applications, it is crucial to ensure that they conform to the necessary standards and regulations for food safety.
Q:What are the advantages of using tin-alloy steel round bars?
There are several advantages to using tin-alloy steel round bars: 1. Enhanced corrosion resistance: Tin-alloy steel round bars have excellent corrosion resistance properties due to the presence of tin. This makes them suitable for various applications in industries such as marine, automotive, and construction, where exposure to moisture, chemicals, or harsh environments is common. 2. Improved machinability: Tin-alloy steel round bars are known for their superior machinability. The addition of tin to the steel composition enhances its ability to be cut, drilled, and shaped more easily, reducing tool wear and increasing productivity during machining processes. 3. Increased strength and durability: The alloying of tin with steel enhances its strength and durability. Tin-alloy steel round bars have higher tensile strength and hardness compared to regular steel bars, making them more resistant to wear, deformation, and fatigue. This makes them suitable for heavy-duty applications and ensures longevity. 4. Excellent thermal conductivity: Tin-alloy steel round bars exhibit excellent thermal conductivity properties. This makes them ideal for applications that require efficient heat transfer, such as heat exchangers, radiators, and engine components. 5. Lower friction coefficient: Tin-alloy steel round bars have a lower friction coefficient compared to regular steel bars. This feature makes them suitable for applications where minimizing friction is crucial, such as in bearings, shafts, and gears, resulting in reduced energy consumption and increased operational efficiency. 6. Cost-effective alternative: Tin-alloy steel round bars offer a cost-effective alternative to more expensive materials such as stainless steel or brass. They provide similar performance characteristics at a lower price point, making them a viable choice for various applications without compromising on quality. In summary, the advantages of using tin-alloy steel round bars include enhanced corrosion resistance, improved machinability, increased strength and durability, excellent thermal conductivity, lower friction coefficient, and cost-effectiveness. These properties make them a versatile and reliable choice for a wide range of applications across different industries.
Q:What are the different types of tests performed on steel round bars for quality control?
Steel round bars undergo various tests for quality control purposes to ensure they meet the necessary standards and specifications. These tests include: 1. Tensile Test: This test assesses the tensile strength, yield strength, and elongation properties of the steel bars. It involves applying a pulling force until the bar breaks, measuring the maximum force it can endure, and determining its ability to stretch without fracturing. 2. Hardness Test: The hardness test determines the steel bar's resistance to indentation or scratching, providing insight into its strength and durability. Common hardness tests include Rockwell, Brinell, and Vickers tests. 3. Chemical Composition Analysis: This analysis identifies the steel round bars' chemical composition, including the percentage of elements like carbon, manganese, sulfur, phosphorus, and others. It ensures compliance with specified composition requirements. 4. Ultrasonic Testing: Ultrasonic testing utilizes high-frequency sound waves to detect internal defects or discontinuities within the steel bars. This non-destructive test identifies cracks, voids, or other flaws that may compromise their structural integrity. 5. Dimensional Inspection: This inspection verifies whether the steel round bars meet the required dimensional tolerances, including diameter, length, and straightness. Precision measuring instruments such as calipers, micrometers, and gauges are used to ensure accurate dimensions. 6. Surface Quality Examination: This examination checks the surface condition of the steel bars for defects like cracks, pits, scratches, or irregularities. A smooth and defect-free surface is crucial for proper functionality and safety. 7. Microstructure Analysis: This analysis involves examining the internal structure of the steel bars under a microscope to determine grain size, inclusion content, and overall microstructural integrity. It provides insights into their mechanical properties and ability to withstand various loads and stresses. By conducting these tests, manufacturers guarantee that the steel round bars meet the required quality standards and are suitable for their intended applications.

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