Rectangular Hollow Section Pipe 5.8 meter

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Loading Port:: China Main Port

Payment Terms:: TT OR LC

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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 classified based on their wall thickness?: Steel pipes are classified based on their wall thickness into three categories: standard, extra strong, and double extra strong.

Q:What are the different types of steel pipe valves?: Various industries and applications commonly utilize several types of steel pipe valves. Here, we present some of the most frequently used types: 1. Gate valves: These valves control fluid flow by raising or lowering a gate or wedge that obstructs the flow path. They ensure a tight seal when closed and are prevalent in applications requiring complete shut-off or full flow. 2. Globe valves: With a globe-shaped body and a movable plug or disc, these valves regulate fluid flow. They excel in throttling capabilities and find application in situations demanding precise flow control. 3. Ball valves: Fluid flow is managed by a rotating ball with a hole in these valves. Alignment of the hole with the pipe signifies full openness, while a perpendicular hole indicates closure. Ball valves are durable, reliable, and extensively used in swift and effortless shut-off applications. 4. Check valves: These valves allow fluid flow in only one direction, preventing backflow. They are instrumental in safeguarding pumps, compressors, and other equipment from reverse flow-induced damage. 5. Butterfly valves: Butterfly valves feature a rotating disc within the pipe to control fluid flow. They are lightweight, compact, and provide rapid shut-off. Butterfly valves are commonly employed in large-scale applications like water treatment and HVAC systems. 6. Plug valves: By utilizing a cylindrical or conical plug, plug valves regulate flow within the valve body. Their simple design, ease of operation, and dependable shut-off capabilities make them prevalent in applications requiring frequent operation and high pressure ratings. 7. Diaphragm valves: These valves employ a flexible diaphragm to manage fluid flow. Pressing the diaphragm against the valve seat blocks flow, while lifting it allows flow. Diaphragm valves are frequently used in environments requiring sterility or hygiene. These examples illustrate the variety of steel pipe valves available in the market. The choice of valve depends on specific requirements, including flow rate, pressure, temperature, and the nature of the transported fluid.

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:What are the advantages of using steel pipes in industrial plants?: There are several advantages of using steel pipes in industrial plants. Firstly, steel pipes are known for their exceptional strength and durability. They can withstand high temperatures, pressure, and heavy loads, making them ideal for transporting various materials and fluids within industrial facilities. Secondly, steel pipes have excellent resistance to corrosion. This is particularly important in industrial settings where the pipes come into contact with corrosive substances or are exposed to harsh environmental conditions. The corrosion resistance of steel pipes ensures their longevity and helps to prevent leaks, which can be costly and hazardous. Additionally, steel pipes offer a high level of versatility. They can be easily fabricated and customized to meet specific requirements, such as different sizes and shapes. This flexibility allows for easier installation and maintenance, reducing downtime and improving overall efficiency in industrial plants. Moreover, steel pipes have a smooth interior surface, which offers several advantages. It allows for efficient flow of materials, minimizing resistance and pressure drop. This smoothness also makes steel pipes less prone to accumulating deposits and contaminants, ensuring a clean and hygienic environment. Furthermore, steel pipes are highly resistant to fire. In industrial plants, where fires can have catastrophic consequences, the fire resistance of steel pipes provides an added layer of safety. Lastly, steel pipes are cost-effective in the long run. Although their initial installation cost may be higher compared to other materials, such as plastic or copper, their durability and low maintenance requirements result in significant cost savings over time. Steel pipes have a long lifespan, reducing the need for frequent replacements or repairs, and their resistance to corrosion and other damages also contributes to cost reduction. In conclusion, the advantages of using steel pipes in industrial plants include their strength, durability, corrosion resistance, versatility, efficient flow, fire resistance, and cost-effectiveness. These qualities make steel pipes a reliable and efficient choice for various applications within industrial facilities.

Q:What is the compressive strength of steel pipes?: The compressive strength of steel pipes can vary depending on the specific grade and manufacturing process, but it is generally high. On average, steel pipes have a compressive strength ranging from 60,000 to 120,000 pounds per square inch (psi).

Q:What are the different types of couplings used with steel pipes?: There are several types of couplings used with steel pipes, including threaded couplings, slip-on couplings, compression couplings, and grooved couplings.

Q:What steel pipes are buried for outdoor heating pipes? Seamless or welded tube? Are there any rules for specific countries? Can use the seamed tube?: The pipe material of heating pipe network should be designed according to the requirement. When the design is not specified, the following requirements shall be met:1 when the pipe diameter is less than or equal to 40mm, welded steel pipe shall be used.2 when the pipe diameter is 50 ~ 200mm, welded steel pipe or seamless steel pipe shall be used.3 when the pipe diameter is greater than 200mm, spiral welded steel pipe shall be used.

Q:Are steel pipes suitable for wastewater treatment plants?: Indeed, wastewater treatment plants find steel pipes to be a suitable option. Their exceptional strength and durability make them a prevalent choice in this field. The ability to endure high pressure and resist corrosion renders them highly suitable for transporting wastewater and various fluids within the challenging environments of treatment plants. Moreover, the ease of welding and joining steel pipes allows for flexibility in designing and installing the piping system. All in all, steel pipes prove to be a dependable and economical selection for wastewater treatment plants.

Q:How do you determine the pipe schedule for steel pipes?: The pipe schedule for steel pipes is determined based on various factors such as the pipe's nominal size, wall thickness, and the application requirements. The pipe schedule is a standardized system that indicates the thickness of the pipe's wall, which affects its pressure rating and suitability for different applications. Factors like the fluid type, temperature, and pressure it will be subjected to help determine the appropriate pipe schedule to ensure safe and efficient operation.

Q:Can steel pipes be used for underground gas pipelines?: Yes, steel pipes can be used for underground gas pipelines. Steel pipes are often the preferred choice for underground gas pipelines due to their strength, durability, and resistance to corrosion. They can effectively handle the high pressure and extreme temperature variations associated with transporting gas underground.

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