Galvanized Rectangular hollow section 20#

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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 the manufacturing of automobiles?: Due to their strength, durability, and versatility, steel pipes find widespread use in the manufacturing of automobiles. Throughout the automobile manufacturing process, various applications make use of steel pipes. One primary application of steel pipes in automobiles lies in constructing the vehicle's chassis and body. Structural components, such as steel pipes, provide the necessary strength and rigidity. With the ability to be bent, shaped, and welded, steel pipes prove to be an ideal choice for automotive purposes. Additionally, steel pipes play a crucial role in the exhaust system of automobiles. Responsible for guiding and redirecting exhaust gases away from the engine, steel pipes form the exhaust manifold. They also contribute to the exhaust pipes and mufflers. Steel's high temperature and corrosion resistance make it suitable for enduring the harsh conditions of the exhaust system. Moreover, steel pipes serve in the cooling system of automobiles. They facilitate the transportation of coolant from the engine to the radiator and back, effectively regulating the engine's temperature. Due to their ability to handle high pressure and temperature, as well as their resistance to corrosion and chemical damage, steel pipes remain the preferred choice for this application. Furthermore, steel pipes find usage in the fuel system of automobiles. They ensure a consistent and reliable supply of fuel by transporting it from the tank to the engine. Steel pipes are selected for this purpose because of their resistance to corrosion and their ability to withstand the high pressure and temperature associated with fuel transportation. In conclusion, steel pipes are indispensable in automobile manufacturing. They contribute significantly to the construction of the chassis and body, the exhaust system, the cooling system, and the fuel system. Thanks to their strength, durability, and versatility, steel pipes are the preferred choice for various automotive applications.

Q:Can steel pipes be used for architectural purposes?: Yes, steel pipes can be used for architectural purposes. Steel pipes are often used in construction projects for structural support, such as in the construction of buildings, bridges, and stadiums. They are also commonly used for architectural design elements, such as handrails, staircases, and decorative features. The durability, strength, and versatility of steel pipes make them a popular choice in architectural applications.

Q:Can steel pipes be used for conveying sewage sludge?: Yes, steel pipes can be used for conveying sewage sludge. Steel pipes are commonly used in various industrial applications, including the transportation of sewage sludge. They are strong, durable, and resistant to corrosion, making them suitable for handling the potentially corrosive nature of sewage sludge.

Q:How are steel pipes used in wastewater treatment plants?: Steel pipes are extensively used in wastewater treatment plants for various purposes such as transporting wastewater, carrying chemicals, and supporting infrastructure. These pipes are durable, corrosion-resistant, and can withstand high pressure, making them ideal for conveying wastewater and other fluids within the plant. Additionally, steel pipes are often used in the construction of wastewater treatment plant structures and support systems due to their strength and longevity.

Q:How are steel pipes protected against corrosion in marine environments?: Steel pipes are protected against corrosion in marine environments through various methods such as applying protective coatings, using cathodic protection systems, and employing sacrificial anodes. These measures create a barrier between the pipe surface and the corrosive elements in the marine environment, thereby increasing the lifespan and integrity of the pipes.

Q:Can steel pipes be used in marine environments?: Yes, steel pipes can be used in marine environments. Steel is a durable and strong material that can withstand the harsh conditions of the marine environment, including exposure to saltwater, waves, and corrosion. However, it is important to select the correct type of steel and apply suitable protective measures to prevent corrosion. Stainless steel and corrosion-resistant alloys are commonly used in marine applications as they have a high resistance to corrosion and can handle the constant exposure to saltwater. Additionally, coatings such as epoxy or zinc can be applied to further protect steel pipes from corrosion. Regular maintenance and inspections are also crucial to ensure the longevity and performance of steel pipes in marine environments.

Q:What are the common factors affecting the flow capacity of steel pipes?: The common factors affecting the flow capacity of steel pipes include the diameter of the pipe, the length and roughness of the pipe, the viscosity of the fluid being transported, and the overall pressure drop across the pipe.

Q:DN80 seamless steel tube, what is the standard thickness?: The DN80 specification is 89*6 seamless steel management formula = (outside diameter wall thickness) * wall thickness *0.02466= per meter weight

Q:How do steel pipes withstand high pressure and temperature?: The inherent properties and construction of steel pipes enable them to endure high pressure and temperature. Steel's strength and durability make it an ideal material for demanding applications. To begin with, steel pipes are crafted from top-notch steel alloys specifically engineered to withstand harsh conditions. These alloys are selected for their high tensile strength, enabling the pipes to withstand the internal pressure exerted by fluids or gases flowing through them. Often, steel used in these pipes is alloyed with elements like chromium, molybdenum, or nickel to enhance its resistance to corrosion and high temperatures. Furthermore, the construction of steel pipes plays a vital role in their ability to withstand high pressure and temperature. Typically, steel pipes are manufactured through seamless or welded processes. Seamless pipes are made by piercing a solid steel billet, resulting in a continuous and uniform pipe without any seams or joints. This seamless construction eradicates weak points and guarantees that the pipe can handle high pressure with no risk of leakage. On the other hand, welded pipes are created by joining two or more pieces of steel together using a welding process. The welds are meticulously inspected and tested to ensure their integrity and strength. Although welded pipes may have seams, they possess equal capability to endure high pressure and temperature when manufactured according to the appropriate standards. Additionally, steel pipes can be further fortified to enhance their resistance to pressure and temperature. For example, pipes used in extremely high-pressure applications may have increased thickness or additional layers of protective coatings. These measures bolster the strength and durability of the pipes, enabling them to withstand even higher pressures and temperatures. In conclusion, steel pipes can endure high pressure and temperature due to the robustness and longevity of the steel alloys used in their construction. The seamless or welded construction of these pipes eliminates weak points and guarantees their ability to handle extreme conditions. Additional reinforcement and protective coatings can be applied to further enhance their resistance to pressure and temperature.

Q:How do you calculate the pipe pressure drop coefficient for steel pipes?: To calculate the pipe pressure drop coefficient for steel pipes, you can use the Darcy-Weisbach equation, which takes into account factors such as the pipe length, diameter, roughness, and fluid flow rate. The coefficient can be determined using empirical correlations or charts based on these parameters, ensuring accurate estimation of pressure drop in steel pipes.

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