Large diameter double sided submerged arc welded pipes

Large diameter double sided submerged arc welded pipes System 1

Large diameter double sided submerged arc welded pipes

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Loading Port:: Tianjin

Payment Terms:: TT or LC

Min Order Qty:: 25 m.t.

Supply Capability:: 12000 m.t./month

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Product Description:

1、Structure of Welded Steel Tube:

Welded Steel Tube is formed by drawing a solid billet over a piercing rod to create the hollow shell. We are company that have many years experience and professional manager team and engineer team and sales team, sure we will provide you high quality of welded pipe and professioanl service.

2、‍‍Main Features of the Welded Steel Tube:

• High manufacturing accuracy

• The higher strength

• The small inertia resistance

• Strong heat dissipation ability

• Good visual effect

• Satisfy price

3、Welded Steel Tube Specification：

Standard	Grade	（MPa）		（MPa）
		Yield strength		Tensile Strength
API SPEC 5L	PSL1
	B	≥241		≥414
	×42	≥290		≥414
	×46	≥317		≥434
	×52	≥359		≥455
	×56	≥386		≥490
	×60	≥414		≥517
	×65	≥448		≥531
	×70	≥483		≥565
	PSL2
		Min	Max	Min	Max
	B	241	448	441	758
	×42	290	496	414	758
	×46	317	524	434	758
	×52	359	531	455	758
	×56	386	544	490	758
	×60	414	565	517	758
	×65	448	600	531	758
	×70	483	621	565	758

Chemical Composition(%)

Standard	Grade	C	Mn	P	S	CEV
	Grade	Max	Max	Max	Max	Max
	PSL1					-
	B	0.26	1.2	0.030	0.030
	×42	0.26	1.3	0.030	0.030
	×46,×52,×56，X60	0.26	1.4	0.030	0.030
	X65	0.26	1.45	0.030	0.030
	X70	0.26	1.65	0.030	0.030
	PSL2					0.43
	B	0.22	1.20	0.025	0.015	0.43

1) Material: Grade:API 5L GR.B, X40, X42, X52, X56, X60, X65, X70.ST37/37-2,ST33,ST35.8,ST35.4.GB 9711.1/SY5037/GB3092

2) Specification range: OD: 406.4MM-1422MM (16”-56”)

Thickness: 8MM-50.8MM depends on OD

3) Excutive standards:GB,ASME API5L.ASTM A 106/A53,Despite of the above standards,we can also supply seamless steel pipe with standard of DIN,JIS,and so on,and also develop new products according to the requirements of our clients!
4) Surface:black lacquered,varnish coating or galvanized.
5) Ends:Beveled or square cut,plastic capped,painted.
6) Packing:bundles wrapped with strong steel strip,seaworthy packing.

4、Packaging & Delivery

Packaging Details:	seaworthy package,bundles wrapped with strong steel strip
Delivery Detail:	15-30days after received 30%TT

5、FAQ of Welded Steel Tube:

①How is the quality of your products?
We have many years business experience in this area, and we have professional engineer and manager team and sure we can provide you high quality production and professional service.

②How about price?
If you like bargain and factory price is not low enough as you think, just don’t waste your time.Please trust the quotation we would give you, it is professional one.

③Why should you chose us?
We can give you both.Additionally, we can also offer professional products inquiry, products knowledge train(for agents), smooth goods delivery, exellent customer solution proposals.Our service formula: good quality+good price+good service=customer’s trust.

6、‍‍ Welded Steel Tube Images：

Large diameter double sided submerged arc welded pipes

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.

Q:Are steel pipes suitable for wastewater pumping stations?: Yes, steel pipes are suitable for wastewater pumping stations. Steel pipes are known for their durability and strength, making them an excellent choice for handling the harsh conditions and high-pressure requirements of wastewater pumping stations. They have the ability to withstand the corrosive nature of wastewater and can resist damage caused by chemicals and other aggressive substances commonly found in wastewater. Additionally, steel pipes are available in various sizes and thicknesses, allowing for customization to meet the specific needs of the pumping station. Furthermore, steel pipes can be easily welded and joined together, ensuring a secure and leak-free system. Overall, steel pipes offer a reliable and long-lasting solution for wastewater pumping stations.

Q:Can steel pipes be used for sewage and wastewater systems?: Yes, steel pipes can be used for sewage and wastewater systems. Steel pipes offer durability, strength, and resistance to corrosion, making them suitable for conveying sewage and wastewater. Additionally, steel pipes can handle high-pressure flows and are often used in larger diameter applications, making them a reliable choice for sewage and wastewater systems.

Q:What are the advantages of using pre-fabricated steel pipes?: There are several advantages of using pre-fabricated steel pipes in various applications. Firstly, pre-fabricated steel pipes offer a high level of durability and strength. Steel is known for its robustness and resistance to external forces, making it an ideal material for constructing pipes that need to withstand high pressure or heavy loads. This durability ensures that pre-fabricated steel pipes have a longer lifespan compared to other materials, reducing the need for frequent replacements and maintenance. Secondly, pre-fabricated steel pipes provide excellent corrosion resistance. Steel pipes are often coated with protective layers, such as galvanization or epoxy, which prevent rusting and corrosion. This corrosion resistance is particularly crucial when the pipes are used in industries or environments where they may come into contact with moisture, chemicals, or other corrosive substances. By utilizing pre-fabricated steel pipes, the risk of leaks, deterioration, or failure due to corrosion is significantly reduced. Another advantage of pre-fabricated steel pipes is their versatility and ease of installation. These pipes are manufactured to precise specifications before being delivered to the site, allowing for quick and efficient installation. Their modular nature means that they can be easily assembled, disassembled, and reconfigured as needed, making them suitable for a wide range of applications, from industrial settings to residential construction. Moreover, pre-fabricated steel pipes can be easily integrated with other building components, such as fittings, valves, and connectors, ensuring a seamless connection and reducing installation time and costs. Furthermore, pre-fabricated steel pipes are more environmentally friendly compared to other materials. Steel is a highly recyclable material, and using pre-fabricated pipes reduces the consumption of natural resources and energy required for their production. Additionally, the long lifespan of steel pipes reduces waste generation and the need for frequent replacements, further contributing to sustainability efforts. Lastly, pre-fabricated steel pipes offer cost advantages. While the initial cost of steel pipes may be higher than some other materials, their durability and low maintenance requirements result in long-term cost savings. The reduced need for repairs, replacements, and maintenance, as well as the ease of installation, translates into lower overall project costs and reduced downtime. In summary, the advantages of using pre-fabricated steel pipes include durability, corrosion resistance, versatility, ease of installation, environmental friendliness, and cost-effectiveness. These benefits make pre-fabricated steel pipes a preferred choice for various industries and applications.

Q:What is the difference between API 5L and ASTM A53 steel pipes?: API 5L and ASTM A53 are two widely used standards for carbon steel pipes. While they both serve similar purposes, there are some key differences between them. 1. Scope: API 5L covers seamless and welded steel pipes for transportation of oil, gas, water, and other fluids. It also includes plain-end, threaded-end, and belled-end pipe types. On the other hand, ASTM A53 is a standard specification for seamless and welded black and hot-dipped galvanized steel pipes used for mechanical and pressure applications. 2. Manufacturing process: API 5L pipe is produced through a hot-rolling process, whereas ASTM A53 pipe is produced through a hot-rolling or cold-drawing process. This difference in manufacturing process affects the pipe's chemical composition and mechanical properties. 3. Chemical composition: API 5L pipe typically has a higher carbon content compared to ASTM A53 pipe. This is because API 5L pipe is used for conveying oil, gas, and water, which often require higher strength and durability. ASTM A53 pipe, on the other hand, is used for mechanical and pressure applications, where lower carbon content is suitable. 4. Mechanical properties: API 5L pipe has higher minimum yield strength and tensile strength compared to ASTM A53 pipe. This is due to the higher carbon content and stricter manufacturing process of API 5L pipe. ASTM A53 pipe has lower yield and tensile strength requirements, making it more suitable for general-purpose applications. 5. Coating options: API 5L pipe can be produced with various coating options such as black varnish, 3PE, FBE, and others, depending on the application requirements. ASTM A53 pipe is usually hot-dipped galvanized for corrosion resistance. In summary, API 5L and ASTM A53 steel pipes have different scopes, manufacturing processes, chemical compositions, mechanical properties, and coating options. Choosing the right pipe depends on the specific application requirements, such as the type of fluid being transported, the operating conditions, and the desired strength and durability.

Q:How are steel pipes used in the oil and gas industry?: Steel pipes are widely used in the oil and gas industry for various purposes. They are primarily used for transporting and distributing oil and gas from extraction sites to refineries and end consumers. Steel pipes are also used in drilling operations, where they are utilized as casing and tubing to extract oil and gas from wells. Additionally, steel pipes are employed in the construction of storage tanks, pipelines, and other infrastructure required for the production, processing, and transportation of oil and gas. Overall, steel pipes play a crucial role in ensuring the efficient and safe operation of the oil and gas industry.

Q:How are steel pipes used in the infrastructure development?: Steel pipes are widely used in infrastructure development as they provide strength, durability, and versatility for various applications. They are commonly used in the construction of bridges, highways, and buildings as structural elements. Steel pipes are also used in water and sewage systems, as they have excellent corrosion resistance and can withstand high pressure. Additionally, steel pipes are used for transporting oil, gas, and other fluids, making them crucial for the energy industry. Overall, steel pipes play a vital role in the development and maintenance of infrastructure, ensuring its stability and functionality.

Q:How are steel pipes used in the food processing industry?: Steel pipes are commonly used in the food processing industry for various purposes such as transporting liquids, gases, and solids, as well as for conveying hot water, steam, and chemicals. These pipes are known for their durability, corrosion resistance, and ability to withstand high temperatures, making them ideal for applications where strict hygiene and safety standards are essential. Steel pipes are used in food processing plants for tasks like transferring ingredients, transporting processed products, and maintaining a sterile environment through steam cleaning and sanitization processes.

Q:Can steel pipes be used for oil transportation?: Yes, steel pipes can be used for oil transportation. Steel pipes are commonly used in the oil and gas industry for the transportation of crude oil, petroleum products, and natural gas. They are preferred due to their strength, durability, and resistance to corrosion. Steel pipes are capable of withstanding high-pressure environments and can be used for both onshore and offshore oil transportation. Additionally, steel pipes can be welded together to form long pipelines, making them a cost-effective solution for transporting oil over long distances. Overall, steel pipes are a reliable and efficient choice for oil transportation.

Q:What are the common sizes of steel pipe fittings?: The common sizes of steel pipe fittings can vary depending on the specific application and industry standards. However, there are several standard sizes that are commonly used across different industries. These sizes range from ¼ inch to 48 inches in diameter. Some of the most common sizes include ½ inch, ¾ inch, 1 inch, 1 ¼ inch, 1 ½ inch, 2 inch, 2 ½ inch, 3 inch, 4 inch, 6 inch, 8 inch, 10 inch, 12 inch, 14 inch, 16 inch, 18 inch, 20 inch, 24 inch, 30 inch, 36 inch, 42 inch, and 48 inch. These sizes are often available in various lengths to accommodate different installation requirements. It is important to consult industry standards and specifications to determine the appropriate size of steel pipe fittings for a specific project.

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