ERW STEEL PIPE API 5L/ASTM A53/ASTM A106

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1)Outside Diameter: 10.3mm--914.4mm
2)Wall Thickness: 0.5~59.54mm
3)Length: Random 1~12m or fixed 6

4)Material quality: ASTM A106 / A53/A210, API 5L,API 5CT,DIN, EN, GB/T8162 / 8163, etc

5)Packing:Hexangular packing in bundles

6)Export: Europe, North America, the Middle East, Africa, Asia and other countries and regions, well received by consumers!

Product Name:	ERW pipe
Size	OD	1/8” -24” (10.3mm-914.4mm)
	Wall Thickness	0.5mm-59.54mm SCH30,SCH40,STD,XS,SCH80,SCH,XXS
	Length	1m-12m
Steel material	Q195,Q215,Q235,Q345,STL400,ST37-2,16Mn,X42,X52,X80,E235, Grade B, SS330,SPHC, S185,SS400,S235JR,ST52,STK500
Standard	BS1387-1985,ASTM A53,ASTM A106,GB/T3091-93-2008,EN10129,JIS.
Usage	Used For irrigation,Structure, Accessorize And Construction
Ends	1) Plain 2) Beveled 3) Threaded with Coupling & cap
Surface Treatment	1) Bared 2) Black Painted (varnish coating) 3) Galvanized 4) With Oiled
Technique	Electronic Resistance Welded (ERW ) Electronic Fusion Welded (EFW) Double Submerged Arc Welded (DSAW)
Welded Line Type	Longitudinal
Inspection	With Hydraulic Test, Eddy Current , Infrared Test
Package	In Bundle with water-proof package
Delivery	1) Container 2) Bulk carrier
Port of Shipment	Xingang Port,Tianjin, China
Date of Delivery	15 days after contract
Payment	L/C at sight or 30% T/T
Others	Fitting as coupler and flange also can be supplied.

Q:Are steel pipes magnetic?: Yes, steel pipes are typically magnetic because they are made primarily of iron, which is a ferromagnetic material.

Q:How are steel pipes used in the transportation of fluids?: Steel pipes are commonly used in the transportation of fluids due to their durability and strength. They are used to carry various types of liquids and gases, such as water, oil, natural gas, and chemicals. Steel pipes are able to withstand high pressure and temperature, making them ideal for long-distance transportation of fluids. They are widely used in industries like oil and gas, water supply, and sewage systems, providing a reliable and efficient means of fluid transportation.

Q:How are steel pipes insulated for thermal purposes?: Steel pipes are commonly insulated for thermal purposes using a variety of methods. One of the most common methods is to wrap the pipes with insulation material such as fiberglass, mineral wool, or foam. This insulation material acts as a barrier between the pipe and the surrounding environment, preventing heat transfer or loss. To properly insulate steel pipes, the insulation material is typically wrapped tightly around the pipe, ensuring that there are no gaps or openings for heat to escape. The insulation is then secured in place using adhesive tapes or metal bands. In addition to external insulation, pipes can also be internally insulated. This involves placing insulation material inside the pipe, creating a layer of protection against heat loss or gain. Internal insulation is commonly used in applications where the pipe carries hot fluids or gases. Furthermore, some steel pipes are designed with a built-in insulation layer. These pipes, known as pre-insulated pipes, have insulation material already integrated into the pipe structure. The insulation layer is typically made of foam or mineral wool and is covered with a protective outer layer, providing effective thermal insulation. Insulating steel pipes for thermal purposes is crucial in various industries, such as oil and gas, HVAC, and plumbing. Proper insulation helps to maintain the desired temperature of the fluid or gas flowing through the pipes, preventing energy loss and improving overall efficiency.

Q:Can steel pipes be used for oil refinery applications?: Yes, steel pipes can be used for oil refinery applications. Steel pipes offer many advantages for oil refinery applications including high strength, durability, and resistance to corrosion. They are able to withstand high pressure and temperature conditions that are common in oil refinery operations. Steel pipes are also easy to transport and install, making them a popular choice for oil refinery projects. Additionally, steel pipes can be customized to meet specific requirements such as size, thickness, and coating, making them suitable for a wide range of oil refinery applications.

Q:How do you calculate the pipe friction loss coefficient for steel pipes?: To calculate the pipe friction loss coefficient for steel pipes, you need to consider several factors. One of the most common methods used is the Darcy-Weisbach equation, which relates the frictional head loss in a pipe to the flow rate, pipe diameter, pipe length, fluid properties, and the pipe roughness coefficient. The Darcy-Weisbach equation is expressed as: hf = (f * L * V^2) / (2 * g * D) Where: hf is the head loss due to friction, f is the pipe friction factor, L is the pipe length, V is the fluid velocity, g is the acceleration due to gravity, and D is the pipe diameter. The pipe friction factor, f, is the key parameter that needs to be determined. For steel pipes, this factor depends on the pipe roughness coefficient, which represents the relative roughness of the pipe. The relative roughness is calculated by dividing the absolute roughness of the pipe surface by the pipe diameter. The pipe roughness coefficient can be obtained from various sources, such as manufacturer specifications, engineering handbooks, or experimental data. It is important to ensure that the roughness coefficient used matches the specific type and condition of the steel pipe being analyzed. Once you have the pipe roughness coefficient, you can use it to calculate the pipe friction factor using empirical correlations or charts. These correlations often involve Reynolds number, which is a dimensionless quantity that characterizes the flow regime. By substituting the obtained pipe friction factor into the Darcy-Weisbach equation, you can calculate the head loss due to friction for steel pipes. This value is essential in designing piping systems, determining pump requirements, or estimating energy consumption in fluid flow applications.

Q:What are the different types of steel pipe supports for seismic applications?: There are several types of steel pipe supports used for seismic applications, including rigid supports, sway braces, and spring hangers. Rigid supports provide fixed support to the piping system, while sway braces are designed to absorb and redirect seismic energy. Spring hangers, on the other hand, are used to isolate and dampen vibrations caused by seismic activity. These different types of supports are selected based on the specific requirements and characteristics of the piping system and the seismic zone in which it is located.

Q:How are steel pipes classified based on their thickness?: There are three main categories for classifying steel pipes based on their thickness: Schedule, Nominal Pipe Size (NPS), and Wall Thickness. In North America, the Schedule classification is commonly used and refers to the pipe's wall thickness. It is indicated by numbers like Schedule 10, Schedule 40, and Schedule 80, where a higher number means a thicker pipe. On the other hand, the Nominal Pipe Size (NPS) classification is used internationally and refers to the pipe's inside diameter. It is expressed in inches and is usually followed by a schedule number to indicate the wall thickness. For example, NPS 6 Schedule 40 means a pipe with a 6-inch inside diameter and a wall thickness according to Schedule 40. Additionally, steel pipes can be classified based on their wall thickness in millimeters or inches. This classification provides a more precise measurement of the pipe's thickness and is commonly referred to as the "wall thickness" or "wt" in specifications. The wall thickness is measured from the outside diameter to the inside diameter and can be expressed in various units of measurement like millimeters, inches, or gauge. In summary, steel pipes are classified based on their thickness using different systems such as Schedule, Nominal Pipe Size (NPS), and Wall Thickness. These classifications ensure the selection of the appropriate pipe for specific applications, taking into account factors such as pressure requirements, structural integrity, and compatibility with other system components.

Q:Are steel pipes resistant to impact or external forces?: Yes, steel pipes are generally resistant to impact and external forces. Steel is known for its high strength and durability, making it an ideal material for various applications, including pipes. Steel pipes have the ability to withstand external forces such as impact, pressure, and vibrations. They are often used in industries that require reliable and sturdy piping systems, such as oil and gas, construction, and infrastructure. Additionally, steel pipes are less prone to cracking or breaking under extreme conditions compared to other materials. However, the resistance to impact and external forces may also depend on the specific grade and thickness of the steel used in the pipes.

Q:What are the different methods of cleaning steel pipes?: There are several methods for cleaning steel pipes, including mechanical cleaning, chemical cleaning, and high-pressure water jetting.

Q:What are the common defects found in steel pipes?: Some common defects found in steel pipes include corrosion, cracks, dents, and leaks. Other defects may include misalignment, improper welding, and pipe wall thinning. These defects can lead to reduced structural integrity, compromised performance, and potential failure of the pipes. Regular inspections and maintenance are essential to identify and address these issues promptly.

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