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:Can steel pipes be used for underground gas storage?: Yes, steel pipes can be used for underground gas storage. Steel pipes are commonly used for transporting and storing various types of gases, including natural gas, due to their strength, durability, and resistance to corrosion. They are able to withstand high pressures and can be designed to meet the specific requirements of underground gas storage facilities. Additionally, steel pipes can be coated or lined with materials to further enhance their resistance to corrosion and to prevent any potential leaks. However, it is important to ensure that proper safety measures and regulations are followed during the construction and operation of underground gas storage facilities to prevent any potential risks or hazards.

Q:Can steel pipes be used for chemical refineries?: Yes, steel pipes can be used for chemical refineries. Steel pipes are commonly used in chemical refineries due to their high strength, durability, and resistance to corrosion. The harsh environment of a chemical refinery, which involves exposure to corrosive chemicals and extreme temperatures, requires materials that can withstand these conditions. Steel pipes are able to handle these challenges and are often chosen for their ability to transport various fluids and gases safely and efficiently. Additionally, steel pipes can be welded, which allows for easy installation and maintenance in complex refinery systems. Overall, steel pipes are a suitable choice for chemical refineries due to their robustness, corrosion resistance, and compatibility with the demanding conditions of this industry.

Q:Can steel pipes be used for gas transportation?: Yes, steel pipes can be used for gas transportation. Steel pipes are commonly used for the transportation of natural gas, propane, and other gases due to their high strength, durability, and resistance to corrosion. They can effectively withstand high pressure and extreme temperatures, making them a reliable choice for gas transportation systems.

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:How are steel pipes used in the manufacturing sector?: Steel pipes are used in the manufacturing sector for various purposes such as transporting fluids and gases, supplying water, and carrying out structural applications. They are commonly used in industries like oil and gas, construction, automotive, and aerospace for their durability, strength, and resistance to corrosion. Additionally, steel pipes are crucial in the manufacturing of machinery, equipment, and infrastructure, making them essential components in many manufacturing processes.

Q:How are steel pipes used in the manufacturing of telecommunications infrastructure?: Steel pipes are commonly used in the manufacturing of telecommunications infrastructure for various purposes such as underground cable protection, overhead cable support, and antenna mounting. They provide durability, strength, and corrosion resistance, ensuring the longevity and reliability of the infrastructure. Additionally, steel pipes allow for easy installation and maintenance of telecommunications equipment, making them an essential component in the industry.

Q:What is the role of steel pipes in the food processing industry?: Steel pipes play a crucial role in the food processing industry as they are used for various applications such as conveying fluids, gases, and other materials throughout the production process. These pipes are resistant to corrosion, have high strength, and can withstand extreme temperatures, making them ideal for transporting food products safely and hygienically. They are widely used for transporting water, steam, and other liquids, as well as for transferring ingredients, such as grains, oils, and sauces. Additionally, steel pipes are utilized in the construction of food processing equipment, such as mixers, blenders, and storage tanks, ensuring the durability and integrity of the entire production system.

Q:Can steel pipes be used for underground power transmission?: Yes, steel pipes can be used for underground power transmission. Steel pipes are commonly used in underground power transmission systems due to their durability, strength, and resistance to corrosion. They provide a protective casing for the power cables, ensuring their safety and preventing damage from external factors such as moisture, soil movements, and potential impacts. Steel pipes also allow for easy installation, maintenance, and repair of the power transmission system. Additionally, their ability to withstand high pressure and temperature makes them suitable for carrying the high voltage electricity required for power transmission. Overall, steel pipes are a reliable and efficient choice for underground power transmission.

Q:Can steel pipes be used for conveying potable water?: Yes, steel pipes can be used for conveying potable water. However, there are some considerations and precautions that need to be taken into account. Steel pipes are strong and durable, making them suitable for transporting water over long distances. They are also resistant to corrosion and can withstand high pressure. To ensure the safety and quality of the water being transported, it is important to use pipes that are specifically designed and manufactured for potable water applications. These pipes are often coated or lined with materials that prevent the leaching of contaminants into the water, such as epoxy or cement mortar lining. Additionally, regular maintenance and inspections should be conducted to prevent the buildup of sediments or rust that could affect the water quality. It is worth noting that steel pipes can be more expensive compared to other materials like plastic or copper. However, their longevity and reliability make them a cost-effective choice in the long run. It is also important to comply with local regulations and standards regarding the use of steel pipes for conveying potable water to ensure the health and safety of consumers.

Q:Can steel pipes be used for sewage disposal systems?: Yes, steel pipes can be used for sewage disposal systems. Steel pipes are durable, resistant to corrosion, and have high strength, making them suitable for conveying sewage and wastewater. Additionally, steel pipes can handle high-pressure systems and are often used in industrial and commercial applications for sewage disposal.

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