Hot Rolled Steel Round Bar 40Cr System 1

Hot Rolled Steel Round Bar 40Cr

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Loading Port:: China Main Port

Payment Terms:: TT or LC

Min Order Qty:: 100 m.t.

Supply Capability:: 2000 m.t./month

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Product Applications:

Hot Rolled Steel Round Bar are ideal for a large number of architectural and engineering structures. Or it can be used in construction of plants for the production of steel house frames, high-voltage transmission towers, bridges, vehicles, boilers, containers, ships, etc

Product Advantages:

OKorder's Hot Rolled Steel Round Bars are durable, strong, and with competitive price

Main Product Features:

· Premium quality

· Prompt delivery & seaworthy packing (30 days after receiving deposit)

· Corrosion resistance

· Can be recycled and reused

· Mill test certification

· Professional Service

· Competitive pricing

Product Specifications:

Manufacture: Hot rolled

Grade: Q195 – 235

Certificates: ISO, SGS, BV, CIQ

Length: 6m – 12m, as per customer request

Packaging: Export packing, nude packing, bundled

Diameter	Mass	Diameter	Mass	Diameter	Mass
(mm)	(kg/m)	(mm)	(kg/m)	(mm)	(kg/m)
6	0.22	22	2.98	53	17.30
7	0.30	24	3.55	56	19.30
8	0.40	25	3.85	60	22.20
9	0.50	26	4.17	63	24.50
10	0.62	28	4.83	65	26.00
11	0.75	30	5.55	70	30.20
12	0.89	32	6.31	75	34.70
13	1.04	34	7.13	80	39.50
14	1.21	36	7.99	85	44.50
15	1.39	38	8.90	90	49.90
16	1.58	40	9.86	95	55.60
17	1.78	42	10.90	100	61.70
18	2.00	45	12.50	120	88.85
19	2.23	48	14.20	140	120.93
20	2.47	50	15.40	150	138.82

FAQ:

Q1: Why buy Materials & Equipment from OKorder.com?

A1: All products offered byOKorder.com are carefully selected from China's most reliable manufacturing enterprises. Through its ISO certifications, OKorder.com adheres to the highest standards and a commitment to supply chain safety and customer satisfaction.

Q2: How do we guarantee the quality of our products?

A2: We have established an advanced quality management system which conducts strict quality tests at every step, from raw materials to the final product. At the same time, we provide extensive follow-up service assurances as required.

Q3: How soon can we receive the product after purchase?

A3: Within three days of placing an order, we will begin production. The specific shipping date is dependent upon international and government factors, but is typically 7 to 10 workdays.

Q4:What is the package

A4: Standard seaworthy packing or as customer required; all goods are packed in bundle with steel strips and shipped by break bulk vessel or container

Images:

Hot Rolled Steel Round Bar 40Cr

Q: Are steel round bars suitable for use in the automotive industry?: Yes, steel round bars are commonly used in the automotive industry due to their strength, durability, and versatility. They are used in various applications such as axle shafts, drive shafts, suspension components, and engine parts. The high tensile strength and resistance to wear make steel round bars ideal for handling heavy loads and enduring demanding conditions in vehicles.

Q: Can steel round bars be threaded?: Yes, steel round bars can be threaded. Threading refers to the process of cutting threads onto the surface of a cylindrical object, such as a steel round bar, to create a screw-like shape. This allows the bar to be securely fastened into a corresponding threaded hole or to join with another threaded component. Threading can be done using different methods, such as manual threading with a die or using machine tools like lathes or thread rolling machines. The specific method used depends on the size and type of thread required. However, it is important to note that not all steel round bars are suitable for threading, as the material composition and hardness of the steel can affect the threading process. Therefore, it is recommended to consult with a professional or experienced personnel to ensure the steel round bar is suitable for threading and to determine the appropriate threading method.

Q: How do you calculate the weight of a steel round bar based on its length and diameter?: To calculate the weight of a steel round bar, you can use the formula: weight = (pi * diameter^2 * length) / 4.

Q: What is the difference between a polished and a cold drawn steel round bar?: A polished steel round bar has undergone a process of buffing or grinding to smoothen its surface and improve its aesthetic appearance, while a cold drawn steel round bar is produced by pulling the steel through a die at room temperature, resulting in increased strength and dimensional accuracy.

Q: How are steel round bars used in the manufacturing of valves and fittings?: Steel round bars are used in the manufacturing of valves and fittings as they provide the necessary strength and durability required for these components. The round bars are first machined and shaped into various parts of the valve or fitting, such as the body, stem, or disc. The steel round bars are then further processed through cutting, drilling, and threading to create the desired shape and size. This ensures that the valves and fittings can withstand high pressure, temperature, and corrosive environments, making them suitable for industrial applications.

Q: What are the advantages of using high-temperature steel round bars?: Using high-temperature steel round bars in various applications has several advantages. Firstly, these bars possess excellent heat resistance properties, enabling them to withstand elevated temperatures without compromising their structural integrity. This makes them ideal for industries like aerospace, automotive, and power generation, where components are exposed to extreme heat conditions. Another advantage of high-temperature steel round bars is their superior strength and durability. They are designed to withstand high mechanical stresses, making them suitable for applications requiring heavy loads or intense pressure. Additionally, their high strength-to-weight ratio allows for lighter and more efficient designs, reducing overall material and production costs. Furthermore, high-temperature steel round bars exhibit excellent corrosion resistance properties. They can withstand exposure to harsh environments, including chemicals, moisture, and saltwater, without significant degradation. This makes them suitable for industries like marine, chemical, and oil and gas where corrosion resistance is crucial. Moreover, high-temperature steel round bars offer excellent dimensional stability, maintaining their shape and size even under extreme temperature fluctuations. This property is highly advantageous in applications where precision and accuracy are essential, such as machining and tooling. Lastly, high-temperature steel round bars are readily available in various sizes, grades, and finishes, allowing for flexibility and customization to meet specific project requirements. This versatility makes them suitable for a wide range of applications, ensuring that there is a suitable option for every project, regardless of complexity or industry. In conclusion, high-temperature steel round bars provide superior heat resistance, strength, durability, corrosion resistance, dimensional stability, and versatility. These properties make them an excellent choice for various industries and applications, guaranteeing reliable and long-lasting performance in demanding environments.

Q: What are the advantages of using spring steel round bars?: There are several advantages of using spring steel round bars: 1. High strength: Spring steel round bars are known for their exceptional strength. They are designed to withstand high levels of stress and strain, making them ideal for applications that require strong and durable materials. 2. Flexibility: Spring steel round bars have excellent flexibility, allowing them to be easily shaped, bent, or formed without losing their strength. This flexibility makes them suitable for various manufacturing processes and applications. 3. Superior elasticity: Spring steel round bars possess excellent elasticity, enabling them to return to their original shape after being subjected to deformation or stress. This elasticity is crucial in applications where materials need to absorb shocks or vibrations. 4. Resistance to fatigue: Spring steel round bars are highly resistant to fatigue and can withstand repeated cycles of loading and unloading without losing their mechanical properties. This resistance to fatigue ensures their reliability and longevity, making them suitable for demanding applications. 5. Excellent toughness: Spring steel round bars exhibit exceptional toughness, which means they can withstand sudden impact or heavy loads without breaking or fracturing. This characteristic makes them suitable for applications that require materials to withstand harsh environments or heavy-duty operations. 6. Corrosion resistance: Many spring steel round bars are made from corrosion-resistant alloys, providing protection against rust and other forms of corrosion. This corrosion resistance makes them suitable for applications where exposure to moisture or corrosive substances is expected. 7. Cost-effective: Spring steel round bars offer a cost-effective solution compared to other types of steel or materials. Their durability and longevity reduce the need for frequent replacements, ultimately saving costs in the long run. In summary, the advantages of using spring steel round bars include high strength, flexibility, superior elasticity, resistance to fatigue, excellent toughness, corrosion resistance, and cost-effectiveness. These properties make them a preferred choice in various industries, including automotive, construction, manufacturing, and aerospace.

Q: What are the different types of steel round bar alloys used in the construction industry?: In the construction industry, various steel round bar alloys are commonly utilized. The following are some of the most favored alloys: 1. Carbon Steel: This type of steel alloy is extensively employed in construction due to its exceptional strength and durability, enabling it to be used in a wide array of applications. 2. Stainless Steel: With its remarkable resistance to corrosion and staining, stainless steel is an ideal choice for construction projects that involve exposure to moisture or chemicals. It finds applications in handrails, kitchen equipment, and structural components. 3. Alloy Steel: This steel variant contains additional alloying elements like manganese, chromium, or nickel, which augment its mechanical properties. Alloy steel round bars are renowned for their high tensile strength, toughness, and wear resistance, making them suitable for heavy-duty applications. 4. Tool Steel: Designed specifically for manufacturing tools and machinery components, tool steel round bars are recognized for their hardness, resistance to abrasion, and ability to retain their shape at high temperatures. They are commonly utilized in the construction industry for fabricating cutting tools, dies, and molds. 5. Duplex Steel: This alloy combines the qualities of both austenitic and ferritic stainless steels. Duplex steel round bars offer excellent corrosion resistance, high strength, and good weldability. They are frequently employed in construction projects that necessitate a combination of strength and corrosion resistance, such as in marine or coastal environments. In summary, the selection of a steel round bar alloy in the construction industry hinges on the specific application and project requirements. Each alloy boasts distinct properties and advantages, enabling construction professionals to choose the most suitable option for their needs.

Q: 20# difference between round bar and A3 round bar, can they be used separately?: The first floor of the answer is lame, 20 is a low carbon steel, low carbon steel is A3, and the two carbon content are equivalent, both mechanical properties are equivalent, but they are not the same, the 20 steel is high quality carbon steel, carbon structural steel is A3, not to see the difference. 20 steel better quality, chemical composition, impurity content control are better, and A3 to casually, so if you only occasionally used, that is no problem, if often use, it is a better consistency of 20 steel

Q: What are the common defects found in steel round bars?: Some common defects found in steel round bars include surface cracks, internal voids, inclusions, segregation, and dimensional variations. Surface cracks can occur during the manufacturing process or due to improper handling and transportation. These cracks can weaken the structural integrity of the bar and reduce its load-bearing capacity. Internal voids, also known as blowholes or cavities, are void spaces within the steel that can be caused by trapped gases during the solidification process. These voids can negatively impact the mechanical properties of the bar and make it more susceptible to failure under stress. Inclusions are non-metallic particles or impurities that can be present in the steel. They can originate from the raw materials used in the production or from contaminants during the manufacturing process. Inclusions can reduce the strength and ductility of the steel and can become initiation sites for cracks. Segregation refers to the uneven distribution of elements within the steel. It can occur during the solidification process, resulting in areas of the bar with different chemical compositions. This can lead to variations in mechanical properties such as hardness and toughness, making the bar less consistent in its performance. Dimensional variations, such as out-of-roundness or variations in diameter, can also be considered defects. These variations can affect the fit and functionality of the bar in applications where precise dimensions are critical. It is important to identify and address these defects to ensure the quality and reliability of steel round bars, especially in applications where high strength and performance are required. Regular inspections, quality control measures, and adherence to industry standards and specifications can help minimize these defects and ensure the integrity of the steel round bars.

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