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 conveying slurry and slurries?: Yes, steel pipes can be used for conveying slurry and slurries. Steel pipes are known for their durability, high strength, and resistance to wear and corrosion, making them suitable for transporting abrasive materials like slurry. Additionally, steel pipes can handle high pressures and temperatures, making them reliable for conveying slurries in various industries such as mining, construction, and wastewater treatment.

Q:How are steel pipes used in nuclear power plants?: Steel pipes are used in nuclear power plants for various purposes, including transporting coolant, steam, and other fluids, as well as providing structural support for the plant's infrastructure.

Q:What are the different international standards for steel pipes?: There are several different international standards for steel pipes, including the American Society for Testing and Materials (ASTM), the International Organization for Standardization (ISO), and the European Committee for Standardization (CEN). These standards define specific requirements for the manufacturing, testing, and dimensions of steel pipes to ensure their quality and compatibility for various applications.

Q:What are the different end finishes for steel pipes?: Different end finishes are used for steel pipes, depending on their intended use and specific requirements. Some common types of end finishes for steel pipes include: 1. Plain End: This is the most basic and widely used end finish. The pipe is cut square at both ends without any additional treatment or threading. Plain end pipes are typically used for low-pressure applications or when welding methods will be used for connection. 2. Beveled End: A beveled end finish involves cutting the pipe at an angle, usually 30 or 37.5 degrees. This makes welding easier and creates a stronger joint. Beveled end pipes are commonly used for butt-welding applications, where two pipes are aligned and welded together at the beveled ends. 3. Threaded End: In this end finish, the pipe is threaded at both ends to allow for easy connection with threaded fittings or couplings. Threaded end pipes are commonly used in plumbing and gas distribution systems, as well as for applications that require frequent disassembly and reassembly. 4. Coupled End: Coupled end finishes involve the installation of couplings or connectors at each end of the pipe. This allows for quick and easy connection of pipes without the need for additional threading or welding. Coupled end pipes are often used in oil and gas pipelines or in applications where rapid installation is required. 5. Grooved End: A grooved end finish involves cutting grooves into the pipe's ends and using mechanical couplings or fittings to join the pipes together. This type of end finish is commonly used in fire protection systems and for large-diameter pipes that require efficient assembly. 6. Flanged End: Flanged end finishes involve attaching flanges to the pipe ends. These flanges can be bolted together to create a secure and leak-proof connection. Flanged end pipes are commonly used in applications that require easy disassembly and reassembly, such as in chemical plants or refineries. It's important to consider factors such as the application, required joint strength, connection method, and compatibility with other system components when choosing an end finish for a steel pipe. Consulting a professional or referring to industry standards is recommended to ensure the correct end finish is selected for a specific application.

Q:Can steel pipes be used for transporting gases and liquids?: Yes, steel pipes can be used for transporting gases and liquids. Steel pipes are known for their high strength, durability, and resistance to corrosion, making them an ideal choice for transporting various substances. Additionally, steel pipes have the ability to withstand high pressure and temperature, making them suitable for a wide range of applications in industries such as oil and gas, water supply, and chemical processing.

Q:How are steel pipes used in heating systems?: Steel pipes are commonly used in heating systems to transport hot water or steam from the boiler to the radiators or heating units. The durability and strength of steel make it an ideal choice for withstanding high temperatures and pressure. These pipes are typically installed underground or within the walls and floors of buildings to distribute heat efficiently throughout the space.

Q:Can steel pipes be used for firefighting systems?: Yes, steel pipes can be used for firefighting systems. Steel pipes are commonly used for their durability, strength, and resistance to high pressure and heat. They can effectively transport water or other fire suppressants to extinguish fires efficiently, making them a reliable choice for firefighting systems.

Q:How big is the seamless steel tube of DN50?: DN refers to the nominal diameter, the outer diameter is 60.3mm

Q:How are steel pipes used in bridge construction?: Steel pipes are commonly used in bridge construction as structural elements to provide support and stability. They are often used as piers, piles, or columns to bear the weight of the bridge and transfer it to the ground. Steel pipes are also utilized in the construction of bridge decks and railings. Their strength, durability, and versatility make them essential components in bridge engineering.

Q:How do you protect steel pipes from fire?: One way to protect steel pipes from fire is by applying a fire-resistant coating or insulation. This can help prevent the pipes from reaching the critical temperature where structural integrity is compromised. Additionally, installing fire rated enclosures or barriers around the pipes can provide an extra layer of protection. Regular inspections and maintenance are also crucial to ensure any potential fire hazards are identified and addressed promptly.

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