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:

 

Q:
Steel round bars are made through a process called hot rolling, where steel billets are heated and then passed through a series of rollers to achieve the desired shape and size. This process helps to improve the strength and durability of the steel, making it suitable for various applications in construction, manufacturing, and engineering industries.
Q:
Steel round bars and stainless steel round bars have some key differences that make them suitable for different applications. One of the main differences between steel and stainless steel round bars is their composition. Steel is primarily made of iron, with small amounts of carbon and other elements. Stainless steel, on the other hand, is an alloy composed of iron, chromium, and often other elements like nickel or molybdenum. This composition gives stainless steel its unique properties, such as corrosion resistance. In terms of strength, both steel and stainless steel round bars can be manufactured to have high tensile strength. However, stainless steel generally has higher tensile strength compared to regular steel, making it more suitable for applications that require additional strength and durability. Another important difference is their resistance to corrosion. Stainless steel round bars have excellent corrosion resistance due to the presence of chromium in their composition. This makes them ideal for applications where they will be exposed to moisture, chemicals, or other corrosive environments. Steel round bars, on the other hand, are more susceptible to rust and corrosion and may require additional protective coatings in such environments. In terms of cost, steel round bars are generally more affordable compared to stainless steel round bars. The higher cost of stainless steel is due to its unique properties and the additional alloying elements required in its production. Both steel and stainless steel round bars have their own advantages and applications. Steel round bars are commonly used in construction, manufacturing, and general-purpose applications where corrosion resistance is not a primary concern. Stainless steel round bars, on the other hand, find extensive use in industries such as food processing, chemical processing, medical equipment, and marine applications, where corrosion resistance is crucial. In summary, the choice between steel round bars and stainless steel round bars depends on the specific requirements of the application. Steel round bars are more affordable but may require additional corrosion protection, while stainless steel round bars offer superior corrosion resistance and strength.
Q:
Yes, steel round bars can be welded.
Q:
The hardness of a steel round bar can be measured using various methods, with the most common method being the Rockwell hardness test. This test involves applying a specific load to an indenter and measuring the depth of the indentation left on the material's surface. To measure the hardness of a steel round bar using the Rockwell hardness test, the following steps can be followed: 1. Select the appropriate Rockwell scale for the steel being tested. The most commonly used scales for steel are HRC (Rockwell C) and HRB (Rockwell B). 2. Clean the surface of the steel round bar to remove any dirt, oil, or contaminants that could affect the accuracy of the test. 3. Place the steel round bar on a flat and stable surface, ensuring it is properly supported to prevent any movement during testing. 4. Select the appropriate indenter for the chosen Rockwell scale. For HRC, a diamond cone indenter is typically used, while for HRB, a hardened steel ball is used. 5. Apply a preliminary minor load to the indenter, typically 10 kgf (kilogram-force) for HRC and 3 kgf for HRB. This helps ensure proper contact between the indenter and the material's surface. 6. Apply the major load, which is specific to the chosen Rockwell scale. For HRC, it is typically 150 kgf, while for HRB, it is usually 100 kgf. 7. Allow the major load to dwell for a specific period, typically 15 seconds, to ensure proper indentation. 8. Release the major load while keeping the minor load applied. This allows the indenter to partially recover, reducing the depth of the indentation. 9. Measure the depth of the remaining indentation using a microscope or a specialized Rockwell hardness testing machine. The measured value corresponds to the hardness value on the chosen Rockwell scale. It is important to note that the Rockwell hardness test is just one of several methods available to measure the hardness of a steel round bar. Other methods, such as the Brinell hardness test or the Vickers hardness test, may also be used depending on the specific requirements of the application.
Q:
A smooth steel round bar is characterized by its consistently even surface, free from any visible imperfections or deformities. It is typically produced using the hot rolling technique, which involves heating a steel billet and passing it through a series of rolling mills to achieve the desired shape and surface finish. Smooth steel round bars are commonly employed in applications where aesthetics and surface quality are of utmost importance, such as architectural designs or decorative metalwork. Contrarily, a deformed steel round bar possesses intentional deformations or patterns on its surface. These deformations can take various forms, including ridges, ribs, or indentations. The purpose of incorporating deformations on the surface of a steel round bar is to enhance its ability to bond with concrete or other materials. The irregular surface of a deformed bar provides increased friction and better adhesion, thereby improving the structural integrity of reinforced concrete structures. Deformed steel round bars find primary use in construction projects, particularly in reinforced concrete structures like columns, beams, and slabs. The deformations on the bar's surface serve to prevent slippage between the steel and concrete, ensuring a stronger bond and enhancing the overall stability and durability of the structure. To summarize, the key distinction between a smooth and a deformed steel round bar lies in their surface characteristics and intended applications. Smooth bars possess a uniform and smooth surface, making them suitable for applications that prioritize aesthetics and surface quality. Deformed bars, on the other hand, possess intentional deformations to enhance bonding with concrete, making them well-suited for construction projects that require reinforced concrete structures.
Q:
Steel round bars can indeed be used for making hydraulic systems. Steel is a durable and strong material that can withstand high pressure and extreme conditions, making it suitable for hydraulic applications. Steel round bars can be machined and shaped into various components such as cylinders, pistons, and shafts, which are essential parts of hydraulic systems. Additionally, steel is resistant to corrosion, which is crucial for hydraulic systems that often come into contact with fluids. However, it is important to ensure that the steel round bars used for hydraulic systems meet the necessary specifications and requirements, such as hardness, tensile strength, and dimensional accuracy, to ensure optimal performance and reliability.
Q:
Steel round bars are commonly used in the mining industry for various applications such as drilling, excavation, and support structures. These bars are used as drill bits, anchor bolts, and reinforcement elements in underground mines and open-pit mining operations. Their high strength and durability make them suitable for withstanding the harsh conditions and heavy loads encountered in mining activities. Additionally, steel round bars are also utilized in the construction of mining equipment and machinery for their ability to provide structural integrity and stability.
Q:
Yes, steel round bars can be used in the production of construction equipment. Steel round bars are commonly used in the construction industry for various applications, including the manufacturing of heavy machinery, equipment components, structural frames, and supports. The high strength and durability of steel make it an ideal material for constructing robust and reliable construction equipment.
Q:
The bending stress in a steel round bar can be calculated using the formula: Bending Stress = (Moment * Radius) / (Section Modulus). The moment is calculated by multiplying the applied force by the distance from the force to the center of the bar. The radius is the radius of the round bar, and the section modulus is a property of the bar's cross-sectional shape that indicates its resistance to bending.
Q:
Yes, steel round bars are generally resistant to a wide range of chemicals. However, the level of resistance may vary depending on the specific type of steel and the particular chemical being used.

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