high quality api 5ct erw steel pipe

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WELDED ROUND STEEL PIPE

Commodity	Steel Pipe and Tube
Features	OD(mm)	Thickness(mm)	Length(m)
Cross-sectional	OD(mm)	Thickness(mm)	Length(m)
Round:	21.3-273.1	1.0-9.5	5.8/6 or you require
Square:	1515-300300	1.0-15.0	5.8/6 or you require
Rectangular:	1015-350400	1.0-15.0	5.8/6 or you require

National Standard
Welded Steel Pipe For Transportation Of Low Pressure Fluid
GB/T13091-2001
1	Outside Diameter Of Steel Pipe
	Outside Diameter D/mmm	Tolerance Of Pipe Outside Diameter	Tolerance Of Pipe And Outside Diameter/mm
	D≤48.3	±0.5mm
	48.3<D≤508	±1.0%
	168.3<D≤508	±0.75%	+2.4 -0.8
	D>508	±1.0%	+3.0 -0.8
	Tolerance Of Wall Thickness	±12.5%
2	Length	Usual Length	Tolerance
		4M-9M	+20 -0
		Multiple Length:5-10mm Tolerance For Each Mutiple	+20 -0
3	Bending	≤168.3mm	Straight For Ordinary Use Or Negotiate The Bending
3	Bending	>68.3mm	Smaller Than 0.2%Of Full Length Steel Pipe

Nominal Pipe size (inch)	Outside Diameter (mm)	Schedule 1
		Nominal Wall Thickness (mm)	Weight(kg/m)
		Nominal Wall Thickness (mm)	Small	Big
1/2”	20	1.0-2.75	0.467	1.168
3/4”	25	0.9-2.75	0.662	1.55
1”	32	1.0-3.25	0.693	2.341
11/4	40	1.0-3.25	1.24	2.945
11/2	47	1.0-3.5	1.367	3.5
2	59	1.5-3.5	3.758	4.716
21/2	75	1.5-3.75	2.718	6.588
3	88	1.8-3.75	3.825	7.79
4	114	1.5-4.0	4.16	10.85
5	140	2.5-4.25	8.476	14.227
6	165	2.5-4.5	10.017	17.717
8	219	3.5-5.0	18.572	26.385

Q: What is the average cost of steel pipes?: Several factors, including size, grade, and quantity of steel pipes needed, as well as current market conditions, can cause the average cost of steel pipes to vary. Typically, steel pipes range in cost from $500 to $1500 per ton. Nonetheless, it should be emphasized that this is only a rough estimation, and prices may fluctuate due to factors such as demand, location, and quality. For more precise pricing information based on specific project requirements, it is advisable to contact suppliers or manufacturers.

Q: Can steel pipes be used for oil drilling operations?: Yes, steel pipes are commonly used for oil drilling operations due to their strength, durability, and ability to withstand high pressure and corrosive environments.

Q: How do steel pipes compare to other materials in terms of cost?: Steel pipes are generally more cost-effective than many other materials used for pipes, thanks to their durability, strength, and availability. While initial costs may vary depending on factors like size and grade, steel pipes offer a longer lifespan and require less maintenance compared to other materials, making them a cost-efficient choice in the long run.

Q: How are steel pipes protected during transportation and storage?: Steel pipes are typically protected during transportation and storage through various measures. These include using protective coatings like oil or paint to prevent corrosion, using proper packaging materials such as plastic caps or wrapping, securing them with straps or bands to prevent movement and damage, and storing them in covered or enclosed areas to shield them from environmental elements like moisture, sunlight, or extreme temperatures.

Q: How are steel pipes used in the automotive industry?: Steel pipes are commonly used in the automotive industry for various applications such as exhaust systems, fuel lines, and structural components. They provide strength, durability, and resistance to corrosion, making them ideal for withstanding high temperatures and harsh conditions. Steel pipes are essential in ensuring efficient exhaust gas flow, delivering fuel to the engine, and providing structural support to enhance vehicle safety and performance.

Q: How do you calculate the flow rate of water in steel pipes?: To calculate the flow rate of water in steel pipes, you need to consider the pipe's diameter, length, and the pressure difference across the pipe. Using formulas like the Darcy-Weisbach equation or the Hazen-Williams equation, you can determine the flow rate by plugging in these variables along with the fluid properties.

Q: How do you calculate the pipe flow rate for steel pipes?: In order to calculate the flow rate of steel pipes, one must take into account various factors. Initially, the inside diameter of the pipe, which is commonly represented as D, needs to be determined. Subsequently, the length of the pipe, denoted as L, should be measured. Furthermore, one must be aware of the pressure drop, ΔP, across the pipe and the density of the fluid, ρ. Once all this information is obtained, either the Darcy-Weisbach equation or the Hazen-Williams equation can be utilized to calculate the flow rate. The Darcy-Weisbach equation is typically employed for pipes with turbulent flow, whereas the Hazen-Williams equation is commonly used for pipes with laminar flow. For the Darcy-Weisbach equation, the formula is as follows: Q = (π/4) * D^2 * √(2ΔP/ρ) Here, Q denotes the flow rate in cubic meters per second, D represents the inside diameter of the pipe in meters, ΔP signifies the pressure drop across the pipe in pascals, and ρ stands for the fluid density in kilograms per cubic meter. On the other hand, for the Hazen-Williams equation, the formula is as follows: Q = C * (D^2.63) * (ΔP^0.54) * (L^0.63) In this case, Q represents the flow rate in cubic meters per second, D denotes the inside diameter of the pipe in meters, ΔP signifies the pressure drop across the pipe in pascals, L represents the length of the pipe in meters, and C represents the Hazen-Williams coefficient, which relies on the roughness of the pipe. To ensure an accurate calculation of the pipe flow rate, it is imperative to maintain consistent units of measurement throughout the calculation. Additionally, precise measurements of the inside diameter, length, pressure drop, and fluid density are crucial in obtaining reliable results.

Q: How are steel pipes used in the construction of oil-fired power plants?: Steel pipes are commonly used in the construction of oil-fired power plants for various purposes. They are primarily utilized for the transportation of oil and other fluids within the plant, including fuel oil, lubricants, and cooling water. Steel pipes are also used for the installation of high-pressure steam and water lines, as well as for the construction of exhaust systems, ventilation ducts, and other structural components. Overall, steel pipes play a crucial role in ensuring the efficient and reliable operation of oil-fired power plants.

Q: What is PE coated steel pipe? Seek explanation: PE coating on the inner wall of steel pipe steel pipe is covered with a layer of polyethylene plastic polymer, PE, polyethylene (Polyethylene of raised temperature is the abbreviation of resistance English), the scope of application of the general PE pipe water supply pipe to a temperature below 40 DEG C, cannot be used for hot water transmission pipeline.

Q: What are the factors to consider while selecting steel pipes for a project?: When choosing steel pipes for a project, there are several key factors to take into account. These factors encompass the material composition of the steel, the dimensions of the pipes, the intended use, the environmental conditions, and the allocated budget. Firstly, the material composition of the steel pipes plays a vital role in determining their strength, resistance to corrosion, and overall durability. Carbon steel, stainless steel, and alloy steel are commonly used types of steel for pipes, each possessing unique characteristics suitable for different applications. Secondly, the dimensions of the pipes, including diameter and wall thickness, should be carefully considered. It is crucial to ensure that these dimensions align with the project requirements and the system in which the pipes will be installed. This ensures that the selected pipes can effectively handle the required flow rates and pressures. Thirdly, thorough assessment of the intended application of the steel pipes is necessary. Different projects may demand pipes with specific features, such as heat resistance, pressure resistance, or the ability to transport particular substances like gas, oil, or water. Understanding these application requirements aids in selecting the appropriate type of steel pipes. Evaluation of the environmental conditions in which the pipes will be installed is also important. Factors such as temperature fluctuations, exposure to moisture, corrosive substances, and external pressures must be taken into account. For example, if the project involves underground installation or exposure to corrosive chemicals, corrosion-resistant steel pipes may be necessary. Lastly, the allocated budget for the project is a significant consideration. The cost of steel pipes can vary depending on their material composition, dimensions, and additional features. Striking a balance between project requirements and available budget ensures cost-effectiveness without compromising the quality and performance of the pipes. In conclusion, the selection of steel pipes for a project necessitates careful consideration of factors including material composition, pipe dimensions, intended application, environmental conditions, and budget. By thoroughly evaluating these factors, one can choose the most suitable steel pipes that meet project requirements, ensuring long-term performance and durability.

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