Rectangular Hollow Hot Sale Section

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Loading Port:: China Main Port

Payment Terms:: TT or LC

Min Order Qty:: 25-35 m.t.

Supply Capability:: -

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1.Quick Details

Thickness:	1.0 - 35 mm	Section Shape:	Square	Outer Diameter:	2020-600600
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

①How is the quality of your products?
Our products are manufactured strictly according to national and internaional standard, and we take a test
on every pipe before delivered out.

②How about price?
Yes, we are factory and be able to give you lowest price below market one, and we have a policy that “ for saving time and absolutely honest business attitude, we quote as lowest as possible for any customer, and discount can be given according to quantity.

③Why 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.Our service formula: good quality+good price+good service=customer’s trust
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

Rectangular Hollow Hot Sale Section

Q: How do you determine the required wall thickness for steel pipes?: The determination of the necessary wall thickness for steel pipes involves the consideration of multiple factors and calculations. One of the main factors to be taken into account is the pressure to which the pipe will be exposed. As the pressure increases, a thicker wall is required to guarantee that the pipe can endure the internal forces. The material strength of the steel used for the pipe is also a significant factor. Different steel grades possess varying tensile strengths, which directly impact the required wall thickness. Tensile strength refers to the maximum stress a material can withstand before failing, making it crucial to select a steel grade capable of withstanding the expected pressure. Furthermore, the pipe's diameter is influential in determining the necessary wall thickness. Pipes with larger diameters typically necessitate thicker walls to maintain their structural integrity and prevent deformation under pressure. Engineers employ industry standards and formulas to calculate the required wall thickness. The American Society of Mechanical Engineers (ASME) B31 code is the most widely used standard, offering guidelines for designing pressure piping systems. The ASME code integrates safety margins, material properties, and pressure ratings to determine the appropriate wall thickness. Other factors, such as temperature, corrosion, and external loads, can also influence the necessary wall thickness. For instance, applications involving high temperatures may require thicker walls to prevent buckling or softening of the pipe. In conclusion, the determination of the required wall thickness for steel pipes involves the consideration of pressure, material strength, diameter, temperature, and other external forces. Engineers rely on industry standards and calculations to ensure the pipe's ability to safely withstand the intended operating conditions.

Q: Can steel pipes be used for underground applications?: Yes, steel pipes can be used for underground applications. Steel pipes are highly durable and can withstand the pressure and corrosion that may be encountered in underground environments. They are commonly used for various underground applications such as water supply, sewage systems, and underground utility lines.

Q: What is the difference between seamless steel pipes and seamless stainless steel pipes?: The main difference between seamless steel pipes and seamless stainless steel pipes lies in their composition. Seamless steel pipes are typically made from carbon steel, which is an alloy of iron and carbon. On the other hand, seamless stainless steel pipes are made from an alloy of iron, carbon, and chromium, which gives them enhanced corrosion resistance and durability. This makes seamless stainless steel pipes suitable for applications where resistance to corrosion is essential, such as in the food industry or in environments with high humidity or exposure to chemicals.

Q: What are the different types of thread connections used in steel pipes?: There are several types of thread connections commonly used in steel pipes, including tapered threads such as NPT (National Pipe Taper), which are designed to create a tight seal, and straight threads like NPS (National Pipe Straight), which are often used for mechanical applications. Additionally, some other types of thread connections used in steel pipes include BSP (British Standard Pipe), which is widely used in Europe, and API (American Petroleum Institute) threads, which are commonly used in the oil and gas industry.

Q: What is the maximum allowable stress for steel pipes?: The maximum allowable stress for steel pipes depends on various factors such as the grade of steel, diameter, wall thickness, and the intended application. It is typically determined by industry standards and codes, such as the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code. Therefore, there is no one-size-fits-all answer to this question.

Q: Can steel pipes be used for underground oil and gas pipelines?: Yes, steel pipes are commonly used for underground oil and gas pipelines due to their durability, strength, and resistance to corrosion.

Q: Are steel pipes resistant to impact?: Yes, steel pipes are generally resistant to impact due to their strong and durable nature. They can withstand heavy loads and external forces, making them suitable for applications that involve high-pressure environments or potential impact scenarios.

Q: How are steel pipes used in the water supply system?: Steel pipes are commonly used in the water supply system due to their durability and strength. They are used to transport water from the source, such as a reservoir or water treatment plant, to various distribution points, such as homes, buildings, and industries. Steel pipes are resistant to corrosion and can handle high water pressure, making them ideal for long-distance water transportation. Additionally, steel pipes are often used in underground applications, as they can withstand the weight of soil and other external forces.

Q: Can steel pipes be used for underground water supply pipelines?: Indeed, underground water supply pipelines can utilize steel pipes. The reason for the widespread use of steel pipes in water supply systems is their ability to endure, their strength, and their resistance to corrosion. They can withstand high levels of pressure and can accommodate large quantities of water. Furthermore, steel pipes come in a variety of sizes and thicknesses, granting flexibility in the design and installation of underground water supply pipelines. However, it is crucial to ensure that the steel pipes are appropriately coated or lined to avert corrosion and uphold the water's quality during transportation. Regular inspections and maintenance must also be carried out to prevent any potential problems with the steel pipes.

Q: What are the different types of steel pipe fittings for chemical processing plants?: There are various types of steel pipe fittings used in chemical processing plants, including but not limited to, elbows, tees, reducers, flanges, and couplings. These fittings are designed to connect and control the flow of fluids within the piping system, ensuring safe and efficient operation in industrial settings.

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