Rectangular Hot Rolled Carbon Steel Tube

Rectangular Hot Rolled Carbon Steel Tube System 1

Rectangular Hot Rolled Carbon Steel Tube

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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:	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.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. If you want see our quality certifications and all kinds of testing report, please just ask us for it.
Guaranteed: If products’ quality don’t accord to discription as we give or the promise before you place order, we promise 100% refund.

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”,if you like bargain and factory price is not low enough as you think, just don’t waste your time.Please trust the quotation we would give you, it is professional one.

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 !

3.Rectangular Hot Rolled Steel Tube Image

Rectangular Hot Rolled Carbon Steel Tube

Q:What are the different types of steel pipes available in the market?: There are several different types of steel pipes available in the market, each designed for specific purposes and applications. Some of the most common types include: 1. Carbon Steel Pipes: These are the most widely used type of steel pipes, known for their strength and durability. They are primarily used for transporting fluids and gases in various industries such as oil and gas, construction, and plumbing. 2. Alloy Steel Pipes: These pipes are made by combining different metals, such as chromium, nickel, or molybdenum, with carbon steel. Alloy steel pipes offer enhanced strength, corrosion resistance, and heat resistance. They are often used in high-pressure applications, such as in power plants and chemical plants. 3. Stainless Steel Pipes: Stainless steel pipes are highly resistant to corrosion and oxidation, making them suitable for applications where hygiene and durability are crucial. They are commonly used in industries like food processing, pharmaceuticals, and water treatment. 4. Galvanized Steel Pipes: These pipes are coated with a layer of zinc to protect them from rust and corrosion. Galvanized steel pipes are commonly used in plumbing systems and outdoor structures, such as fences and handrails. 5. Seamless Steel Pipes: Seamless pipes are produced without any welding or joints, resulting in a smooth and continuous surface. They are known for their high strength and are often used in high-pressure applications. 6. Welded Steel Pipes: Welded pipes are made by rolling or bending a flat steel plate into a cylindrical shape and then welding the edges together. They are commonly used in industries such as construction, oil and gas, and automotive. 7. ERW (Electric Resistance Welded) Steel Pipes: ERW pipes are made by passing a high-frequency electrical current through the steel strip, causing it to heat and form a weld. They are widely used in various applications, including plumbing, water wells, and structural support. 8. LSAW (Longitudinal Submerged Arc Welded) Steel Pipes: LSAW pipes are made by bending and welding steel plates into a cylindrical shape. They are commonly used for transporting large volumes of oil, gas, or water over long distances. These are just a few examples of the diverse range of steel pipes available in the market. The choice of the right type of steel pipe depends on factors such as the intended application, environmental conditions, and budget considerations. It is important to consult with experts or professionals to determine the most suitable type of steel pipe for a specific project or application.

Q:How are steel pipes protected against galvanic corrosion?: Steel pipes are protected against galvanic corrosion through various methods including the application of protective coatings such as zinc or epoxy, cathodic protection systems, and the use of corrosion inhibitors.

Q:How are steel pipes used in the petrochemical industry?: Steel pipes are widely used in the petrochemical industry for transporting and distributing various fluids and gases. They are particularly valuable for their durability, strength, and resistance to corrosion, which is crucial when dealing with highly corrosive substances. Steel pipes are employed in various processes such as refining, oil and gas production, chemical manufacturing, and transportation of petrochemical products. Whether it's conveying raw materials, transferring processed products, or supporting infrastructure, steel pipes play a vital role in ensuring the safe and efficient operation of the petrochemical industry.

Q:What are the common protective coatings used on the inner surface of steel pipes?: The common protective coatings used on the inner surface of steel pipes include epoxy, polyurethane, and cement mortar coatings. These coatings provide corrosion resistance, prevent the formation of scales, and improve the durability and lifespan of the pipes.

Q:What is the outer diameter and wall thickness of DN40 steel pipe?: DN40, refers to the diameter of 40mm, that is, an inch and a half, there are welded pipe and galvanized pipe,Ordinary wall thickness 3.5mm wt 3.84kg/mThicken 4.25mm weight 4.58kg/m

Q:What is the primary purpose of steel pipes?: The primary purpose of steel pipes is to transport various fluids and gases over long distances, ensuring a reliable and efficient means of conveyance in industries such as oil and gas, water supply, construction, and infrastructure.

Q:How do steel pipes handle high-pressure applications?: Steel pipes are able to handle high-pressure applications due to their inherent strength and durability. They have a high tensile strength and are resistant to deformation under extreme pressure. Additionally, the seamless construction of steel pipes ensures that there are no weak points or joints that can compromise their ability to handle high pressures.

Q:What are the different methods of pipe coating for steel pipes?: There are several different methods of pipe coating for steel pipes, each with its own advantages and applications. One common method is fusion bonded epoxy (FBE) coating. This involves heating the steel pipe and applying a thermosetting powder that melts and adheres to the surface, creating a strong and durable coating. FBE coating provides excellent corrosion protection and is commonly used in the oil and gas industry. Another method is liquid epoxy coating. This involves applying a liquid epoxy resin to the surface of the steel pipe, which then cures and forms a protective barrier. Liquid epoxy coating is often used for smaller diameter pipes and provides good chemical resistance. Polyethylene (PE) coating is another popular method, particularly for pipelines that will be buried underground. PE coating involves wrapping the steel pipe with a layer of polyethylene, which provides excellent resistance to water, chemicals, and abrasion. Polyurethane (PU) coating is another option, offering a high level of chemical resistance and flexibility. It is typically used for offshore applications and in environments with extreme temperatures. Other methods of pipe coating include coal tar enamel (CTE) coating, which provides excellent resistance to water and chemicals, and concrete weight coating, which adds weight to the pipe to ensure stability in underwater or subsea applications. In summary, the different methods of pipe coating for steel pipes include fusion bonded epoxy (FBE), liquid epoxy, polyethylene (PE), polyurethane (PU), coal tar enamel (CTE), and concrete weight coating. The choice of coating method depends on the specific requirements of the application, such as corrosion protection, chemical resistance, or stability.

Q:What is the impact toughness of steel pipes?: The ability of steel pipes to withstand sudden or high-velocity impacts without fracturing or breaking is referred to as their impact toughness. This property measures the material's resistance to cracking when subjected to dynamic loading conditions. The impact toughness of steel pipes is highly significant as it determines their capacity to endure accidental impacts or external forces during transportation, installation, and operation. To evaluate the impact toughness of steel pipes, standardized tests such as the Charpy V-notch test or the Izod test are commonly utilized. These tests involve striking a notched sample of the steel pipe with a pendulum or a falling weight and measuring the amount of energy absorbed by the material until it fractures. The impact toughness is then calculated based on this energy absorption. A high impact toughness is desirable in steel pipes as it signifies a greater ability to absorb energy and resist fracture, making them more resilient to sudden impacts or loading conditions. This characteristic is particularly crucial in applications where steel pipes are exposed to high-stress environments, such as in oil and gas pipelines, automotive components, or structural applications. Several factors can influence the impact toughness of steel pipes, including their chemical composition, heat treatment, and microstructure. For instance, alloying elements like manganese, chromium, and nickel can enhance the impact toughness by promoting the formation of fine-grained microstructures and preventing crack propagation. Similarly, appropriate heat treatment processes like quenching and tempering can optimize the material's microstructure and mechanical properties, thereby improving its impact toughness. In conclusion, the impact toughness of steel pipes is a vital property that determines their ability to withstand sudden or high-velocity impacts. It is evaluated through standardized tests and can be influenced by factors such as chemical composition, heat treatment, and microstructure. A high impact toughness is desirable in steel pipes to ensure their structural integrity and resistance to fracture when subjected to dynamic loading conditions.

Q:How are steel pipes transported and stored?: Steel pipes are typically transported using trucks, trains, or ships, depending on the distance and quantity. These pipes are often stacked and secured with straps or chains during transportation to prevent any movement or damage. When it comes to storage, steel pipes are commonly stored in outdoor yards or warehouses. They are usually organized in neat rows or stacked on racks to maximize space and facilitate easy access. Additionally, pipes may be covered with weather-resistant materials to protect them from rust or corrosion during storage.

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