Rectangular Hot Rolled Steel Tube

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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

Specifications

OD:15X15-800X800MM,20X30--600X800MM
Thick.:1.0--35.0MM

Rectangular Hot Rolled Steel Tube Image

Rectangular Hot Rolled Steel Tube

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 !

Q: What is the difference between API 5L and ASTM A53 steel pipes?: API 5L and ASTM A53 are two widely used standards for carbon steel pipes. While they both serve similar purposes, there are some key differences between them. 1. Scope: API 5L covers seamless and welded steel pipes for transportation of oil, gas, water, and other fluids. It also includes plain-end, threaded-end, and belled-end pipe types. On the other hand, ASTM A53 is a standard specification for seamless and welded black and hot-dipped galvanized steel pipes used for mechanical and pressure applications. 2. Manufacturing process: API 5L pipe is produced through a hot-rolling process, whereas ASTM A53 pipe is produced through a hot-rolling or cold-drawing process. This difference in manufacturing process affects the pipe's chemical composition and mechanical properties. 3. Chemical composition: API 5L pipe typically has a higher carbon content compared to ASTM A53 pipe. This is because API 5L pipe is used for conveying oil, gas, and water, which often require higher strength and durability. ASTM A53 pipe, on the other hand, is used for mechanical and pressure applications, where lower carbon content is suitable. 4. Mechanical properties: API 5L pipe has higher minimum yield strength and tensile strength compared to ASTM A53 pipe. This is due to the higher carbon content and stricter manufacturing process of API 5L pipe. ASTM A53 pipe has lower yield and tensile strength requirements, making it more suitable for general-purpose applications. 5. Coating options: API 5L pipe can be produced with various coating options such as black varnish, 3PE, FBE, and others, depending on the application requirements. ASTM A53 pipe is usually hot-dipped galvanized for corrosion resistance. In summary, API 5L and ASTM A53 steel pipes have different scopes, manufacturing processes, chemical compositions, mechanical properties, and coating options. Choosing the right pipe depends on the specific application requirements, such as the type of fluid being transported, the operating conditions, and the desired strength and durability.

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: How do steel pipes perform in high-altitude applications?: Steel pipes perform well in high-altitude applications due to their inherent strength and durability. The high tensile strength of steel allows it to withstand the harsh conditions and extreme temperature variations experienced at high altitudes. Furthermore, steel pipes are resistant to corrosion, making them suitable for use in high-altitude environments where exposure to moisture and atmospheric gases is common. Overall, steel pipes are a reliable choice for various high-altitude applications, including oil and gas transportation, construction, and infrastructure development.

Q: How are steel pipes coated for aesthetic purposes?: Steel pipes can be coated for aesthetic purposes in several ways. One common method is through the application of a powder coating. Powder coating involves spraying a dry powder onto the surface of the steel pipe and then heating it to create a durable and attractive finish. This process allows for a wide range of color options and provides a smooth, even coating. Another method used for aesthetic coating is electroplating. Electroplating involves immersing the steel pipe in a solution containing metal ions, such as chrome or zinc, and passing an electric current through it. This causes the metal ions to bond with the surface of the pipe, creating a thin, decorative layer. Electroplating can produce a variety of finishes, including shiny, reflective surfaces or more matte, textured appearances. Painting is also a common method for coating steel pipes for aesthetic purposes. This involves applying a liquid paint or enamel to the surface of the pipe. By choosing different colors, textures, and finishes, painting allows for a wide range of aesthetic possibilities. However, it is important to ensure that the paint used is specifically formulated to adhere to metal surfaces and withstand the environmental conditions the pipe will be exposed to. In addition to these methods, steel pipes can also be coated using techniques such as hot-dip galvanizing or metal cladding. These processes involve the application of a layer of another metal, such as zinc or aluminum, to the surface of the steel pipe. This not only enhances the appearance of the pipe but also provides protection against corrosion, extending its lifespan. Overall, there are multiple methods available for coating steel pipes for aesthetic purposes. Each method offers its own advantages and can be chosen based on the desired appearance, durability, and environmental conditions. It is important to consider factors such as color, texture, finish, and protective properties when selecting the coating method to ensure the desired aesthetic result is achieved.

Q: How are steel pipes recycled?: Steel pipes are recycled through a multi-step process that involves collection, sorting, cleaning, and melting. First, the used steel pipes are gathered from various sources such as construction sites or industrial facilities. Then, they are sorted based on their size, shape, and quality. Next, any contaminants or coatings are removed from the pipes through cleaning and stripping processes. Finally, the cleaned pipes are melted down in a furnace, and the molten steel is formed into new pipes or other steel products. This recycling process reduces the demand for new raw materials and helps conserve energy and resources.

Q: What are the different methods of joining steel pipes for high-pressure applications?: The different methods of joining steel pipes for high-pressure applications include welding, threaded connections, flanged connections, and grooved connections. Welding involves fusing the ends of the pipes together using heat, creating a strong and leak-proof joint. Threaded connections involve screwing the pipes together, using threads on the ends of the pipes and pipe fittings. Flanged connections involve using flanges, which are flat, circular discs with bolt holes, to connect the pipes together. Grooved connections involve using grooved couplings that grip the ends of the pipes and are secured with bolts, creating a reliable and easy-to-install joint.

Q: How are steel pipes used in the oil and gas industry?: Steel pipes are extensively used in the oil and gas industry due to their durability and strength. They are used for various purposes like drilling, transportation, and processing of oil and gas. Steel pipes are employed in drilling wells, providing a conduit for the extraction of oil and gas from the ground. Additionally, they are used for gathering and transporting hydrocarbons from the wellhead to processing facilities or storage tanks. Steel pipes also play a crucial role in the construction of refineries and petrochemical plants, where they are used for the transportation of various fluids and gases involved in the refining process.

Q: What is the role of steel pipes in the transportation of water?: Steel pipes are of utmost importance in the transportation of water due to their durability and strength. They find extensive use in diverse water supply systems, including municipal water distribution networks, irrigation systems, and industrial water transportation. One of the primary benefits of steel pipes lies in their capacity to endure high pressure and deliver water reliably over long distances. The strength of steel enables the construction of pipelines with larger diameters, facilitating the efficient movement of substantial water volumes. Additionally, steel pipes exhibit remarkable resistance to corrosion, a critical characteristic when conveying water that may contain different minerals, chemicals, or contaminants. The corrosion-resistant properties of steel pipes ensure that the water quality remains uncompromised throughout the transportation process. Furthermore, steel pipes offer exceptional structural integrity, rendering them suitable for both underground and above-ground installations. They can withstand extreme weather conditions, seismic activity, and heavy loads, thereby ensuring the longevity and dependability of the water transportation system. Moreover, steel pipes are easy to install and maintain, apart from being robust and durable. They can be seamlessly welded together, resulting in a pipeline with minimal leakage points. Regular inspections and maintenance help identify potential issues or damages, guaranteeing an uninterrupted flow of water. In conclusion, steel pipes play a critical role in water transportation, serving as a strong and reliable conduit. Their ability to withstand high pressure, resist corrosion, and maintain water quality make them an ideal choice for various water supply systems, contributing to the efficient and sustainable distribution of water resources.

Q: How are steel pipes used in the transportation of liquids and gases?: Due to their durability, strength, and resistance to corrosion, steel pipes find wide applications in the transportation of liquids and gases. Various industries such as oil and gas, water supply, and chemical processing commonly employ them. For the transportation of liquids, steel pipes serve as conduits for crude oil, refined petroleum products, water, and other fluids. These pipes are designed to withstand high pressure and maintain the integrity of the liquid being transported. The smooth inner surface of steel pipes minimizes friction, enabling efficient flow and reduced energy consumption. Moreover, the strength of steel pipes ensures that they can support the weight of the liquid without deformation or failure. In gas transportation, steel pipes are indispensable for the safe conveyance of natural gas, propane, and other compressed gases over long distances. These pipes are engineered to endure high pressures and extreme temperatures. They are also designed to prevent leakage, which is of utmost importance when dealing with flammable or toxic gases. The strength and durability of steel pipes make them ideal for withstanding the stress and strain that may occur during gas transportation. Additionally, steel pipes are frequently utilized in the construction of pipelines for long-distance transportation of liquids and gases. These pipelines can span hundreds or even thousands of kilometers, and steel pipes are the preferred choice due to their high strength and long-term reliability. They can bear the weight of the pipe and the substance being transported, as well as external forces such as soil pressure and temperature fluctuations. In summary, steel pipes play a vital role in the transportation of liquids and gases. Their durability, strength, and resistance to corrosion make them the preferred choice for conveying various substances over long distances. Whether it is for oil and gas, water supply, or chemical processing, steel pipes ensure the safe and efficient transportation of fluids and gases, contributing to the functioning of various industries and economies worldwide.

Q: How are steel pipes protected against electromagnetic interference?: Steel pipes can be protected against electromagnetic interference by using a variety of methods such as shielding, grounding, and insulation. Shielding involves wrapping the pipes with a conductive material, like copper or aluminum, which acts as a barrier to block electromagnetic waves. Grounding ensures that any stray electrical charges are safely directed away from the pipes, reducing the risk of interference. Insulation, such as coatings or sleeves, can also be applied to prevent direct contact between the pipes and potential sources of electromagnetic interference.

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