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High-strength steel tubes are primarily used in mechanical equipment, necessitating attributes such as high strength, wear resistance and corrosion resistance to meet engineering and design specifications.

 

These steel tubes are typically fabricated from specially treated alloy steels or carbon steels, with their chemical compositions meticulously controlled and undergo the heat treatment processes to achieve the desired high strength and other performance characteristics.

Parameter

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Chemical Composition (Heat Analysis) (%)

Grade

Steel number

C

Si

Mn

P

S

Alt

E235

1.0308

≤0.17

≤0.35

≤1.20

≤0.025

≤0.025

≥0.015

E355

1.0580

≤0.22

≤0.55

≤1.60

≤0.025

≤0.025

≥0.015

 

 

Mechanical Properties

Grade

Steel number

Minimum values for the delivery conditions

+C

+LC

+SR

+A

+N

Rm

MPa

A

%

Rm

MPa

A

%

Rm

MPa

ReH

A

%

Rm

MPa

A

%

Rm

MPa

ReH

A

%

E235

1.0308

480

6

420

10

420

350

16

315

25

340-480

235

25

E355

1.0580

640

4

580

7

580

450

10

450

22

490-630

355

22

 

Tolerance

Outside diameter and tolerance

Wall thickness

1.5

1.8

2

2.2

2.5

3

3.5

4

4.5

5

5.5

6

Inside diameter tolerance

12.7

±0.08

±0.15

±0.15

±0.15

±0.15

±0.15

±0.15

±0.25

±0.25

 

 

 

 

14

±0.15

±0.15

±0.15

±0.15

±0.15

±0.15

±0.15

±0.25

±0.25

 

 

 

15

±0.08

±0.15

±0.15

±0.15

±0.15

±0.15

±0.15

±0.15

±0.25

±0.25

 

 

16

±0.08

±0.08

±0.15

±0.15

±0.15

±0.15

±0.15

±0.15

±0.15

±0.25

±0.25

 

18

±0.08

±0.08

±0.08

±0.15

±0.15

±0.15

±0.15

±0.15

±0.15

±0.15

±0.25

±0.25

20

±0.08

±0.08

±0.08

±0.15

±0.15

±0.15

±0.15

±0.15

±0.15

±0.15

±0.15

±0.25

22

±0.08

±0.08

±0.08

±0.08

±0.15

±0.15

±0.15

±0.15

±0.15

±0.15

±0.15

±0.15

25

±0.08

±0.08

±0.08

±0.08

±0.08

±0.15

±0.15

±0.15

±0.15

±0.15

±0.15

±0.15

26

±0.08

±0.08

±0.08

±0.08

±0.08

±0.15

±0.15

±0.15

±0.15

±0.15

±0.15

±0.15

28

±0.08

±0.08

±0.08

±0.08

±0.08

±0.15

±0.15

±0.15

±0.15

±0.15

±0.15

±0.15

30

±0.08

±0.08

±0.08

±0.08

±0.08

±0.15

±0.15

±0.15

±0.15

±0.15

±0.15

±0.15

32

±0.15

±0.15

±0.15

±0.15

±0.15

±0.15

±0.15

±0.15

±0.15

±0.15

±0.15

±0.15

±0.15

35

±0.15

±0.15

±0.15

±0.15

±0.15

±0.15

±0.15

±0.15

±0.15

±0.15

±0.15

±0.15

38

±0.15

±0.15

±0.15

±0.15

±0.15

±0.15

±0.15

±0.15

±0.15

±0.15

±0.15

±0.15

40

±0.15

±0.15

±0.15

±0.15

±0.15

±0.15

±0.15

±0.15

±0.15

±0.15

±0.15

±0.15

42

±0.2

±0.2

±0.2

±0.2

±0.2

±0.2

±0.2

±0.2

±0.2

±0.2

±0.2

±0.2

±0.2

45

±0.2

±0.2

±0.2

±0.2

±0.2

±0.2

±0.2

±0.2

±0.2

±0.2

±0.2

±0.2

48

±0.2

±0.2

±0.2

±0.2

±0.2

±0.2

±0.2

±0.2

±0.2

±0.2

±0.2

±0.2

50

±0.2

±0.2

±0.2

±0.2

±0.2

±0.2

±0.2

±0.2

±0.2

±0.2

±0.2

±0.2

55

±0.25

±0.25

±0.25

±0.25

±0.25

±0.25

±0.25

±0.25

±0.25

±0.25

±0.25

±0.25

±0.25

60

±0.25

±0.25

±0.25

±0.25

±0.25

±0.25

±0.25

±0.25

±0.25

±0.25

±0.25

±0.25

65

±0.3

±0.3

±0.3

±0.3

±0.3

±0.3

±0.3

±0.3

±0.3

±0.3

±0.3

±0.3

±0.3

70

±0.3

±0.3

±0.3

±0.3

±0.3

±0.3

±0.3

±0.3

±0.3

±0.3

±0.3

±0.3

75

±0.3

±0.3

±0.3

±0.3

±0.3

±0.3

±0.3

±0.3

±0.3

±0.3

±0.3

±0.3

±0.3

80

±0.3

±0.3

±0.3

±0.3

±0.3

±0.3

±0.3

±0.3

±0.3

±0.3

±0.3

±0.3

 

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Benefits of Using Structural Steel Tubing

 

1. Exceptional Strength-to-Weight Ratio

One of the most significant advantages of structural steel tubing is its impressive strength-to-weight ratio. Unlike traditional solid steel bars or plates, CBIES precision steel tubes provide significant structural support without the added bulk. This characteristic is particularly beneficial in mechanical equipment, where every ounce counts. Engineers can design lighter and more efficient machines that consume less energy and provide optimal performance while maintaining structural integrity.

 

2. Versatile Applications

Structural steel tube is incredibly versatile, making it suitable for a wide range of mechanical applications. From automotive seat frames to mechanical components, the adaptability of steel tubing allows it to meet various design specifications. Its ability to be easily welded, formed, and fabricated means that it can be utilized in custom solutions that meet the unique demands of different projects.

 

3. Enhanced Resistance to Environmental Factors

Steel tubing is known for its durability and resistance to environmental challenges. Unlike materials that may corrode or degrade over time, structural steel tubing undergoes treatments that increase its resistance to rust, corrosion, and impact. This resilience ensures that mechanical equipment remains operational for longer periods, reducing maintenance costs and downtime.

 

4. Economical Solution

Investing in structural steel tubing can also translate into significant cost savings for manufacturers and builders. The long lifespan, reduced maintenance needs, and lightweight nature of structural steel tubes can decrease operational costs significantly. Moreover, the efficiency of using pre-fabricated steel components can lead to faster assembly times, ultimately saving time and labor costs during the construction process.

 

5. Eco-Friendly Choice

In today’s world, the demand for sustainable construction materials is on the rise. Structural steel tube stands out as an eco-friendly option due to its recyclability. Steel is one of the most recycled materials globally, and using structural steel tubing contributes to a more sustainable lifecycle for mechanical equipment. By choosing this material, companies can reduce their carbon footprint and promote environmental responsibility.

 

6. Improved Aesthetic Appeal

Structural steel tubing is not just about functionality; it also brings an element of aesthetic appeal to mechanical designs. The sleek, clean lines of steel tubing can be incorporated into modern designs, enhancing the overall look of mechanical equipment. This feature is particularly valuable in industries where the visual impression of machinery can influence customer perceptions and brand image.

 

Comparing Structural Steel Tubes with Other Materials: Why Steel is the Best Choice

 

First and foremost, structural steel tubes possess exceptional strength-to-weight ratios. Unlike alternatives such as aluminum or plastic tubes, which may offer some resilience, steel provides unmatched robustness. This means that structures made from steel can bear heavier loads and stress, ensuring safety and longevity in various applications.

 

Moreover, precision steel tubes are engineered for accuracy, with tighter tolerances than many other materials. This precision is essential for projects that require exact measurements and quality finishes. Using precision steel tubes also reduces the need for additional machining and adjustments, which can lead to time and cost savings in the construction process.

Another advantage of structural steel tubes is their outstanding resistance to environmental challenges. Unlike wood or plastic, which can deteriorate over time due to moisture, pests, or UV exposure, structural steel tubes remain impervious to such threats, making them a more sustainable and low-maintenance choice.

 

Additionally, steel is infinitely recyclable, aligning with today's eco-conscious construction practices. Utilizing structural steel tubes contributes to a greener built environment, whereby waste is minimized, and resources are conserved.

 

So comparing structural steel tubes with other materials, steel emerges as the best choice due to its strength, precision, durability, and eco-friendliness. For any construction project, opting for structural steel tubes, particularly precision steel tubes, is not just a smart decision; it's a commitment to quality and longevity in structural integrity. Choose steel – choose excellence.

 

Different Types of Structural Steel Tubes

 

Structural steel tubes are an integral part in mechanical equipment, providing strength, durability, and versatility to a wide range of applications. Let’s delve into the various types available and their unique benefits.

 

HSS Steel Tubes 

 

Hollow Structural Steel (HSS) tubes are favored for their high strength-to-weight ratio. They come in various shapes, including square, rectangular, and round, offering unmatched versatility. The design of HSS steel tubes means they can easily fit into different structural systems, making them suitable for everything from buildings to bridges.

 

Hollow Structural Tubes 

 

Hollow structural tubes are cylindrical in shape, often used in applications requiring a lightweight yet strong solution. Their hollow design allows for easy integration into frameworks and supports, optimizing space and materials. This type of tubular steel is commonly used in scaffolding and various building frameworks.

 

Metric Structural Tubing 

 

For projects requiring precise measurements, metric structural tubing is available. This type of tubing adheres to metric specifications, making it necessary for international projects. Designers and architects can efficiently incorporate these tubes into their plans, ensuring compatibility with global standards.

 

Rectangular and Round Structural Steel Tubing 

 

Rectangular structural steel tubing excels in applications demanding greater rigidity, making it an ideal choice for structural frames. On the other hand, round structural steel tubing is favored for its aesthetic appeal and ability to handle torsional loads effectively, commonly used in railings, fences, and other architectural elements.

 

Shaped Structural Tubing

 

Shaped structural tubing refers to any non-standard cross-section, allowing for customized designs that meet specific project requirements. Whether it’s elliptical or another unique shape, shaped structural tubing provides creative freedom in architectural design.

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1.Selecting high-quality carbon steel as the raw material, which boasts favorable mechanical properties, including strength and toughness and demonstrates stable performance during bending, punching and other processing procedures.


2.CBIES uses advanced high-frequency welding technology to ensure the consistent quality of weld joints, effectively minimizing welding defects. This approach enhances the strength and fatigue life of welded areas, thereby guaranteeing the safety of the product during usage.


3.During the welding process, strict control is exerted over welding parameters such as current, voltage and speed to ensure the integrity of the weld quality. Additionally, post-weld treatments are implemented, including online cleaning of the weld seam and real-time inspection for flaws, to confirm there is on defect such as cracks, incomplete penetration and slag inclusion in the welded areas.

 

 

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