High Quality Round Bar 5-28mm Hot Rolled GB Q235 Q195

Ref Price:
$400.00 / m.t.
Loading Port:
China Main Port
Payment Terms:
TT or LC
Min Order Qty:
25 m.t.
Supply Capability:
100000 m.t./month
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Product Applications:

1) Suitable for making various strong cutting tool abrasion resistance, impact resistance.

2) Used to produce all kinds of high hard and super hard saw blade, drill, tap, broach, gear hob and various kinds of milling cutter.

3) Used for advanced punching die, screw die, and the toughness and complicated shape of the punch, etc.

4) Is used for cold forging die and drawing mode, etc.

5) Recommended watchcase factory, screw factory and other cold stamping products industry use.

 

Product Advantages:

OKorder's High Quality Round Bar 5-28mm Hot Rolled GB Q235 Q195are durable, strong, and resist corrosion.

 

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:

1. Grade: GB, JIS, ASTM, EN

2. Grade: Q235, SS400, A36, S235JR

3. Diameter and mass: As below

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

4. Material: Mild Steel

5. Heat treatment of high quality steel:

Fire: Isothermal annealing temperature is 800 ~ 880 °C, with 10 ~ 20 °C, the furnace cooling to about 600 °C, hardness above HB269.

Preheat temperature: 730-730 °C

Quenching temperature: 1190-1210 °C

Tempering temperature: 540-595 °C

Cold drawn, hardness 285 HBS

Cold drawn after annealing condition, hardness 277 HBS

Quenching methods: oil quenching, air cooling or salt bath quenching

 

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.

 

High Quality Round Bar 5-28mm Hot Rolled GB Q235 Q195

High Quality Round Bar 5-28mm Hot Rolled GB Q235 Q195

Q:
Yes, steel round bars can be used in the manufacturing of cylinders. Steel round bars are often used as raw material for manufacturing cylinders due to their high strength, durability, and ability to withstand high pressure and temperature conditions.
Q:
Yes, steel round bars can be used for making interior components. They are often used in various applications such as handrails, furniture, fixtures, and decorative elements due to their strength, durability, and versatility.
Q:
There are several types of steel round bars commonly used in automotive drivetrain systems, including alloy steel, carbon steel, and stainless steel. These bars are chosen based on their specific properties and characteristics, such as strength, durability, and resistance to corrosion. The selection of the type of steel round bar depends on the specific application and requirements of the drivetrain system.
Q:
Steel round bars have the capability to undergo coating or painting. The purpose of coating or painting steel round bars is manifold; it prevents corrosion, enhances aesthetics, and provides additional protection against environmental factors. There are several methods available for applying coatings and paints to steel round bars, including powder coating, electroplating, or wet paint application. These processes involve first preparing the surface of the steel round bar by removing any existing rust or contaminants, and then applying the chosen coating or paint. The selection of the appropriate coating or paint depends on the specific requirements of the steel round bars, such as their intended use, environmental conditions, and desired appearance. By coating or painting steel round bars, their lifespan can be significantly extended, their visual appeal can be improved, and their durability can be ensured in a wide range of applications.
Q:
Consumer goods manufacturing can make use of steel round bars. Steel is a durable and versatile material that finds wide application across industries, including the production of consumer goods. Steel round bars can be molded, cut, and shaped into various components or parts that are required for items like furniture, appliances, tools, and machinery. The strength and resilience of steel make it a perfect choice for consumer goods that demand robust and long-lasting materials. Moreover, steel can be easily customized and finished with coatings or treatments to enhance its appearance or protect it from corrosion, thereby making it even more suitable for use in consumer goods. In summary, the usage of steel round bars is common in consumer goods manufacturing due to their dependable nature, versatility, and ability to provide the desired quality and functionality.
Q:
Steel round bars can experience various surface defects, which can be categorized based on their appearance and severity. Some common defects include: 1. Scale: During the manufacturing process, a thin layer of oxide, known as scale, can form on the steel's surface. It appears rough and flaky and can be easily removed mechanically. 2. Pits: Small depressions or craters, caused by corrosion or mechanical damage, can occur on the steel's surface. Pits weaken the steel's structural integrity and may require repair or replacement. 3. Scratches: Shallow grooves or cuts, resulting from handling, transportation, or machining, can be found on the steel's surface. While minor scratches may not impact performance, deep scratches can cause stress concentration and potential failure. 4. Roll marks: Raised or depressed lines or patterns, formed during the rolling process, can be seen on the steel's surface. Uneven pressure distribution between rolls causes these marks, affecting dimensional accuracy and surface quality. 5. Laminations: Thin layers or bands of non-metallic inclusions parallel to the steel's surface, caused by inadequate refining or improper casting techniques, are known as laminations. They reduce strength and toughness, requiring further processing or rejection. 6. Decarburization: The loss of carbon content on the steel's surface, occurring during heating, annealing, or hot working, is referred to as decarburization. It decreases hardness and strength, potentially leading to premature failure. 7. Surface cracks: Visible cracks on the steel's surface, caused by excessive cooling rates, improper heat treatment, or mechanical stress, are surface cracks. They compromise structural integrity and may necessitate repairs or rejection. These examples cover just a few of the possible surface defects in steel round bars. It is crucial to inspect and address these defects to ensure the steel's quality and performance in various applications.
Q:
Steel round bars are commonly used in the manufacturing of agricultural machinery as they provide strength, durability, and flexibility. These bars are often used to construct various components such as axles, shafts, and pins, which play a crucial role in supporting and transmitting power within the machinery. The high tensile strength of steel round bars allows them to handle heavy loads and withstand harsh operating conditions, ensuring the reliability and longevity of the agricultural equipment.
Q:
Two distinct types of steel bars are the centerless ground steel round bar and the hot rolled steel round bar. To begin with, the manufacturing process for each type varies. The centerless ground steel round bar is produced by passing it through a centerless grinder, which eliminates any surface imperfections and ensures a precise and smooth finish. This process guarantees tight tolerances and a consistent diameter throughout the bar's length. On the other hand, the hot rolled steel round bar is created by subjecting the steel billet to extremely high temperatures and then rolling it through a series of mills to achieve the desired shape and size. As a result, the surface finish of hot rolled steel bars is rougher compared to centerless ground steel bars. In terms of physical properties, centerless ground steel bars generally exhibit a higher level of dimensional accuracy and straightness due to the precision grinding process. This makes them suitable for applications requiring tight tolerances and precise measurements, such as the manufacturing of machinery parts or precision tools. Conversely, hot rolled steel round bars are renowned for their strength and durability. The heating and rolling process imparts desirable mechanical properties to the steel, such as increased hardness and toughness. These bars are commonly used in general construction, structural applications, and fabrication projects where strength and reliability are paramount. In conclusion, the key distinction between a centerless ground steel round bar and a hot rolled steel round bar lies in their manufacturing processes, surface finish, and intended applications. While centerless ground bars offer superior dimensional accuracy and smoothness, hot rolled bars are valued for their strength and resilience. The choice between the two depends on the specific requirements of the application at hand.
Q:
There are several marking methods commonly used for steel round bars. These methods are used to identify and provide information about the steel bars, such as their specifications, grades, manufacturer, and other relevant details. 1. Stamping: Stamping is a widely used marking method in which information is imprinted onto the surface of the steel round bar using a stamping machine. This can include alphanumeric characters, symbols, or logos. Stamping provides a permanent and durable marking that is resistant to wear and corrosion. 2. Laser Marking: Laser marking is a precise and high-quality marking method that uses a laser beam to engrave information onto the surface of the steel round bar. This method allows for intricate designs, barcodes, and serial numbers to be marked. Laser marking provides permanent identification that is resistant to fading and tampering. 3. Inkjet Printing: Inkjet printing is a non-contact marking method that uses inkjet technology to print information onto the steel round bar's surface. This method is commonly used for marking barcodes, QR codes, and other data matrix codes. Inkjet printing allows for fast and efficient marking, and the ink used is designed to adhere to the steel surface effectively. 4. Etching: Etching is a chemical marking method that involves using acid or other chemicals to remove layers of the steel round bar's surface, creating a visible mark. This method is commonly used for marking logos, identification numbers, or other designs. Etching provides a permanent marking that can be easily read and is resistant to wear. 5. Color Coding: Color coding is a simple marking method that involves using paint or colored coatings to mark different types or grades of steel round bars. Each color represents a specific attribute or characteristic, such as strength, corrosion resistance, or heat resistance. Color coding provides quick and visual identification of the steel round bars. These marking methods play a crucial role in ensuring proper identification, traceability, and quality control of steel round bars in various industries such as construction, manufacturing, and engineering. The choice of marking method depends on factors such as the required level of permanence, visibility, and the specific information to be marked on the steel round bars.
Q:
In general, steel round bars exhibit resistance against impacts. Steel is renowned for its remarkable strength and durability, rendering it highly impervious to forces and impacts. Additionally, the circular configuration of these bars aids in evenly dispersing the impact, thereby diminishing the likelihood of deformation or fracture. Nevertheless, it is crucial to acknowledge that the steel's resistance to impact may vary depending on the grade and quality, as well as the magnitude and characteristics of the impact force.

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