• Rectangular Hot Rolled Carbon Steel Tube 2 System 1
  • Rectangular Hot Rolled Carbon Steel Tube 2 System 2
  • Rectangular Hot Rolled Carbon Steel Tube 2 System 3
Rectangular Hot Rolled Carbon Steel Tube 2

Rectangular Hot Rolled Carbon Steel Tube 2

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Loading Port:
China main port
Payment Terms:
TT or LC
Min Order Qty:
100 m.t.
Supply Capability:
10000 m.t./month

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1.Quick Details

Thickness:

1.0 - 35 mm

Section Shape:

Square

Outer Diameter:

20*20-600*600

Place of Origin:

Shandong China (Mainland)

Secondary Or Not:

Non-secondary

Application:

Structure Pipe

Technique:

Cold Rolled

Certification:

CE

Surface Treatment:

oil,paint

Special Pipe:

Thick Wall Pipe

Alloy Or Not:

Non-alloy

Name:

Square Hollow Steel Pipe/Tube

Shape:

Square/Rectangular

Yield Strength:

360-380Mpa

Tensile Strength:

560-580Mpa

Elongation:

24-28%

Bend Test:

Qualified

Impact Value:

V-notch

Grade:

20#,45#,16Mn,A210,St45,Q235,Q345,Q195,Q215,10#-45#,A53-A369,ST35-ST52,Q195-Q345

Standard:

JIS G3465-2006,JIS G3466,GB/T 3094

2.Specifications

1.    OD:15X15-800X800MM,20X30--600X800MM

2.    Thick.:1.0--35.0MM

3.FAQ of Rectangular Steel Tube

How is the quality of your products?
    Guaranteed: If products
quality dont accord to discription as we give or the promise before you place order, we promise 100% refund.

How about price?
    We
quote as lowest as possible for any customer, and discount can be given according to quantity,if you like bargain and factory price is not low enough as you think, just dont waste your time.Please trust the quotation we would give you, it is professional one.

Why should you chose us?
    Chose happens because of quality, then price, We can give you both.Additionally, we can also offer professional products inquiry, products knowledge train(for agents), smooth goods delivery, exellent customer solution proposals.
SGS test is available, customer inspection before shipping is welcome, third party inspection is no problem.

 If you have any question, pls feel free to contact us !

 

4.Rectangular Hot Rolled Steel Tube Image

 

 

Q: What is the difference between internal and external coating for steel pipes?
Internal coating for steel pipes refers to the application of a protective layer on the inner surface of the pipe to prevent corrosion and increase durability. This coating is designed to withstand the flow of fluids or gases through the pipe, ensuring the integrity of the material and minimizing the risk of contamination. On the other hand, external coating for steel pipes involves applying a protective layer on the outer surface of the pipe to safeguard it from environmental factors such as moisture, chemicals, or mechanical damage. This coating acts as a barrier, shielding the pipe from corrosion and extending its lifespan. In summary, internal coating focuses on protecting the inner surface of the steel pipe, while external coating aims to safeguard the outer surface. Both coatings are crucial for ensuring the longevity and reliability of steel pipes in various applications.
Q: Can steel pipes be used for underwater applications?
Yes, steel pipes can be used for underwater applications. Steel pipes are known for their durability and corrosion resistance, making them suitable for various underwater purposes such as offshore oil drilling, underwater construction, and marine transportation. Additionally, steel pipes can withstand the high pressure and harsh environmental conditions present underwater, making them a reliable choice for such applications.
Q: Can steel pipes be used for structural supports in buildings?
Yes, steel pipes can be used for structural supports in buildings. Steel pipes are commonly used in construction due to their high strength, durability, and ability to withstand heavy loads. They provide excellent structural support, especially in applications that require long spans or high load-bearing capacities. Additionally, steel pipes are resistant to corrosion and can be easily connected or welded, making them a popular choice in building construction.
Q: Can steel pipes be used for irrigation systems?
Yes, steel pipes can be used for irrigation systems. Steel pipes are known for their durability, strength, and resistance to corrosion, making them suitable for use in irrigation systems where they may be exposed to water and various environmental conditions. Additionally, steel pipes can handle high water pressure and are available in different sizes, allowing for efficient water distribution throughout the irrigation system.
Q: What is the impact of temperature on steel pipes?
The significance of temperature on steel pipes cannot be underestimated, as it can bring about both positive and negative consequences. When exposed to high temperatures, steel pipes undergo thermal expansion, which can result in distortion or buckling. This expansion also has the potential to affect joints and connections, leading to leaks or failures. Hence, it is imperative to take into consideration the coefficient of thermal expansion during the design and installation of steel pipes in environments with elevated temperatures. Conversely, steel pipes possess remarkable thermal conductivity, enabling them to endure high temperatures without substantial deterioration. This characteristic renders them suitable for applications where heat transfer is of utmost importance, such as in industrial processes or heating systems. Extreme cold temperatures also pose a threat to steel pipes. Freezing conditions cause water or other fluids within the pipes to expand, resulting in cracks or bursts. This can lead to leaks, fluid loss, and potential harm to surrounding structures. Consequently, it is necessary to implement appropriate insulation and preventive measures to ensure the integrity of steel pipes in cold environments. Moreover, temperature fluctuations can impact the mechanical properties of steel, including its tensile strength and toughness. Prolonged exposure to elevated temperatures can cause a phenomenon known as thermal degradation, which diminishes the steel's strength and renders it more susceptible to deformation or failure. In conclusion, temperature exerts a significant influence on steel pipes, affecting their structural integrity, thermal performance, and mechanical properties. Proper design, insulation, and maintenance are crucial to guarantee the safe and efficient operation of steel pipes under varying temperature conditions.
Q: What is the role of steel pipes in HVAC systems?
Steel pipes play a crucial role in HVAC systems as they are used to transport hot or cold water, steam, and refrigerant gases throughout the system. They provide a durable and reliable conduit for the flow of fluids, ensuring efficient heating, cooling, and ventilation in buildings. Additionally, steel pipes are resistant to corrosion and can withstand high pressure, making them ideal for HVAC applications.
Q: How are steel pipes used in the construction of oil-fired power plants?
Steel pipes are commonly used in the construction of oil-fired power plants for various purposes. They are primarily utilized for the transportation of oil and other fluids within the plant, including fuel oil, lubricants, and cooling water. Steel pipes are also used for the installation of high-pressure steam and water lines, as well as for the construction of exhaust systems, ventilation ducts, and other structural components. Overall, steel pipes play a crucial role in ensuring the efficient and reliable operation of oil-fired power plants.
Q: Can steel pipes be used for conveying slurry?
Yes, steel pipes can be used for conveying slurry. Steel pipes are widely used in various industries for transporting different types of fluids, including slurry. Slurry is a mixture of solid particles suspended in a liquid, and steel pipes are well-suited for handling such mixtures due to their strength, durability, and resistance to corrosion. Steel pipes are also known for their high-pressure and high-temperature capabilities, making them suitable for conveying slurry in demanding applications such as mining, dredging, and wastewater treatment. Additionally, steel pipes can be easily welded, allowing for the construction of long pipelines that can efficiently transport slurry over long distances. However, it is important to consider the specific characteristics of the slurry being conveyed, such as particle size, density, and abrasiveness, to ensure proper pipe selection and design for optimal performance and longevity.
Q: What are the advantages of using steel pipes in construction?
There are several advantages of using steel pipes in construction. Firstly, steel pipes are incredibly strong and durable, making them suitable for carrying heavy loads and withstanding extreme weather conditions. Secondly, steel pipes have a high resistance to corrosion, which ensures their longevity and minimizes maintenance costs. Additionally, steel pipes are versatile and can be easily customized to fit specific project requirements. Lastly, steel pipes are fire-resistant, making them a safer choice for construction purposes. Overall, the use of steel pipes in construction offers strength, durability, corrosion resistance, versatility, and fire safety.
Q: Are steel pipes suitable for underground nuclear waste storage?
Steel pipes are not suitable for underground nuclear waste storage. While steel is a strong and durable material, it is not resistant to corrosion when exposed to certain types of nuclear waste. Over time, the radioactive materials can corrode the steel pipes, leading to potential leaks and contaminating the surrounding environment. Additionally, steel pipes are not designed to withstand the extreme temperatures and pressures that can occur in nuclear waste storage facilities. Therefore, alternative materials such as corrosion-resistant alloys or concrete are typically used for underground nuclear waste storage to ensure the containment and isolation of the hazardous materials.

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