ASTM A500/JIS/EN Rectangular hollow section

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 10 m.t.

Supply Capability:: 5000 m.t./month

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Product Name	rectangular hollow section/ RHS
Size	Size:	1010--500500mm
	Thickness:	0.45--16mm
	Length:	3-12m
Steel Grade	Q195,Q215,Q235,Q345,16Mn, 20#
Standard	ASTM A500,EN10219,GB/T6728,GB/T6725,JIS G3466
Usage	1. For Structure, Airport, Railway 2. Construction and so on.
Ends	Plain end or By Your Choice
Surface	Bared Or With Oiled Or Galvanized
Technique	ERW ,Hot Rolled and Cold Rolled
Section Shape	Rectangular
Inspection	With Hydraulic Testing, Eddy Current , Infrared Test
Package	Bags, Bundle, In Bulk, Containers
MOQ	20 Metric Ton / Can Be Negotiated
Supply Ability	15,000 Metric Ton/Month
Date of Delivery	7 days(Qty within 1000 Metric Ton) or According To The Quantity
Port of Shipment	Tianjin, China
Payment	L/C T/T

Q: How are steel pipes used in mining?: Steel pipes find extensive use in mining operations for a range of purposes. In mining, one of the primary applications of steel pipes involves the transportation of materials, including water, slurry, and other liquids. These pipes possess exceptional durability and can withstand the harsh conditions typically encountered in mining environments, rendering them highly suitable for long-distance material conveyance. Furthermore, steel pipes serve as crucial components in mining ventilation systems. The provision of fresh air to workers and the elimination of harmful gases and dust are of paramount importance in the mining industry. Steel pipes are employed in the construction of ventilation shafts and ducts, facilitating the airflow throughout the mine and ensuring the safety of the miners in their working environment. Moreover, steel pipes contribute significantly to the construction of underground tunnels and mine shafts. By providing structural support and reinforcement, they effectively prevent collapses and maintain the stability of the mine. The strength and durability inherent in steel pipes make them the ideal choice for these critical applications in mining. Another noteworthy use of steel pipes in mining is for the extraction of resources. In certain instances, steel pipes are deployed to establish boreholes or wells, enabling access to underground deposits of minerals or water. Inserted into the ground, these pipes are instrumental in employing various techniques such as drilling or hydraulic fracturing to extract the desired resources. In summary, steel pipes play an indispensable role in the mining industry, serving an array of purposes, including material transportation, ventilation, structural support, and resource extraction. Their strength, durability, and ability to withstand adverse conditions make them an indispensable asset in mining operations.

Q: What is the typical diameter range for steel pipes?: The typical diameter range for steel pipes can vary depending on the specific application and industry requirements. However, in general, steel pipes can have diameters ranging from as small as 0.5 inches (12.7 millimeters) up to several feet (over a meter) in diameter. The most commonly used steel pipes for various purposes, such as plumbing, construction, and transportation of fluids or gases, typically fall within the range of 1/2 inch (13 millimeters) to 36 inches (914 millimeters) in diameter. It is important to note that larger diameter steel pipes are often used for industrial applications, such as oil and gas pipelines, while smaller diameter pipes are commonly used for residential and commercial plumbing systems.

Q: How do steel pipes handle chemical exposure?: Steel pipes are generally known for their excellent resistance to chemical exposure. The high strength and durability of steel make it a reliable material for handling various chemicals. Steel pipes can withstand exposure to a wide range of corrosive substances such as acids, alkalis, solvents, and gases without experiencing significant degradation or damage. One of the main reasons steel pipes handle chemical exposure well is due to their inherent corrosion resistance. Steel is naturally resistant to corrosion and can form a protective oxide layer on its surface, which acts as a barrier against chemical attack. Additionally, steel pipes can be coated or lined with corrosion-resistant materials such as epoxy, polyethylene, or cement to provide extra protection against aggressive chemicals. Moreover, steel pipes are commonly used in industrial applications where they come into contact with different types of chemicals. They are extensively used in chemical plants, refineries, water treatment facilities, and other industries where chemical transportation or storage is required. Steel pipes can handle the high pressures and temperatures associated with these processes while maintaining their structural integrity and chemical resistance. However, it is important to note that the resistance of steel pipes to chemical exposure can vary depending on the specific type and concentration of the chemical. Some highly corrosive substances may require additional measures such as specialized coatings or alloys to ensure long-term protection. In summary, steel pipes are generally well-suited for handling chemical exposure due to their inherent corrosion resistance, durability, and versatility. Their ability to withstand a wide range of corrosive substances makes them a reliable choice for various industrial applications involving chemical transportation and storage.

Q: Are steel pipes affected by magnetic fields?: Yes, steel pipes can be affected by magnetic fields. Steel is a ferromagnetic material, which means it is strongly attracted to magnets and can be magnetized. When exposed to a magnetic field, steel pipes can become magnetized, causing them to behave like magnets themselves. This magnetic effect can have several implications. First, if steel pipes are near strong magnetic fields, such as those generated by electrical currents or powerful magnets, they can experience a force that may cause them to move or vibrate. This can be problematic in certain applications, especially if the pipes need to remain stable and secure. Second, the presence of magnetic fields can induce electrical currents in steel pipes. These currents, known as eddy currents, can generate heat and energy losses. In some cases, this can lead to inefficiencies and increased energy consumption in systems that involve steel pipes. Lastly, magnetic fields can also affect the accuracy of magnetic measurement devices used to detect defects or corrosion in steel pipes. The presence of a magnetic field can interfere with the readings, making it more challenging to accurately assess the condition of the pipes. To mitigate these effects, various measures can be taken. For instance, in applications where stability is crucial, steel pipes can be shielded or isolated from strong magnetic fields using non-magnetic materials. Additionally, the impact of eddy currents can be minimized by using pipes with proper insulation or by using magnetic shielding techniques. Overall, while steel pipes are indeed affected by magnetic fields, the extent of the impact depends on factors such as the strength of the magnetic field, the composition of the steel, and the specific application or environment in which the pipes are used.

Q: How are steel pipes sized and classified?: The primary criteria for sizing and categorizing steel pipes are their outer diameter (OD) and wall thickness. This standardization ensures compatibility and ease of use across different applications. The common approach to sizing steel pipes is through nominal pipe size (NPS), a North American standard that refers to a pipe's OD. NPS sizes span from 1/8 inch to 36 inches, with each size corresponding to a specific OD. For instance, a 1/2-inch NPS pipe has an OD of 0.84 inches, while a 12-inch NPS pipe has an OD of 12.75 inches. It's important to note that the pipe's OD may not precisely match its actual measurement due to historical dimensions. Moreover, steel pipes are categorized into various schedules, which indicate the wall thickness. The most common schedules are SCH 5, SCH 10, SCH 40, SCH 80, and SCH 160, with higher numbers representing thicker walls. These schedules are standardized and aid in selecting the appropriate pipe for specific applications. Additionally, steel pipes can be further classified based on their end connections. The typical types include threaded, plain-end, and socket-weld connections. Threaded pipes possess screw threads on both ends, facilitating easy assembly and disassembly. Plain-end pipes lack threads and are typically joined using welding techniques. Socket-weld pipes have a socket-like end that enables welding with a corresponding fitting. In conclusion, steel pipes undergo sizing and classification based on their outer diameter, wall thickness, and end connections. The nominal pipe size (NPS) denotes the outer diameter, while the schedule number represents the wall thickness. Understanding the sizing and classification of steel pipes is crucial when selecting the appropriate pipe for specific applications in industries like construction, oil and gas, plumbing, and manufacturing.

Q: Can steel pipes be used for geothermal applications?: Yes, steel pipes can be used for geothermal applications. Steel is a durable and strong material that can withstand high temperatures and pressures typically found in geothermal systems. It is commonly used for drilling wells and transporting geothermal fluids, making it a suitable choice for geothermal applications.

Q: How are steel pipes insulated against heat loss?: There are multiple ways to insulate steel pipes to prevent heat loss. One widely used method involves utilizing insulation materials like mineral wool or fiberglass wraps. These materials are wrapped around the pipes, forming a barrier that reduces heat transfer. Another approach involves directly applying insulation coatings like foam or rubber coatings onto the pipe's surface. These coatings create a protective layer that minimizes heat loss. Additionally, thermal tape or heat-resistant tape can be employed to seal any gaps or joints in the insulation, ensuring a continuous barrier against heat loss. In summary, effectively insulating steel pipes is crucial to maintaining the desired temperature of the fluid or gas being transported and enhancing energy efficiency across diverse industries.

Q: What are the future trends in steel pipe manufacturing?: Some future trends in steel pipe manufacturing include the use of advanced technologies such as robotic automation and artificial intelligence for increased efficiency and precision. There is also a growing focus on sustainability, with the development of eco-friendly manufacturing processes and the use of recycled materials. Additionally, there is a shift towards producing pipes with higher strength and lighter weight, as well as an increasing demand for customized products to meet specific industry requirements.

Q: How are steel pipes used in the manufacturing of ships?: Steel pipes are used in the manufacturing of ships for various purposes, such as carrying fluids and gases, providing structural support, and facilitating efficient operation of the ship's systems. They are used for plumbing, ventilation, and firefighting systems, as well as for the construction of hulls and other vital components. Overall, steel pipes play a crucial role in ensuring the functionality and safety of ships during their construction and operation.

Q: What is the difference between seamless steel pipes and seamless alloy steel pipes?: The main difference between seamless steel pipes and seamless alloy steel pipes lies in their composition. Seamless steel pipes are made from carbon steel, which is primarily composed of iron and carbon. On the other hand, seamless alloy steel pipes are made from a combination of carbon steel and various alloying elements such as chromium, nickel, or molybdenum. These alloying elements enhance the properties of the steel, making it more resistant to corrosion, heat, and pressure. They also provide improved strength and durability, making alloy steel pipes suitable for applications that require high performance and reliability. In summary, while both seamless steel pipes and seamless alloy steel pipes are used for various industrial applications, alloy steel pipes offer superior performance due to their alloying elements, making them more suitable for demanding conditions.

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