LSAW Steel Pipe, also known as longitudinally submerged arc welding, is highly suitable for oil transportation due to its unique properties and advantages. The following is a detailed explanation of its applicability:

1. Excellent physical properties

Large pipe diameter and wall thickness: LSAW steel pipes have a wide range of finished specifications, which can meet the high requirements for pipeline size in petroleum transportation.

High pressure resistance: Its pipe wall thickness is sufficient to withstand the high pressure generated during oil transportation, ensuring transportation safety.

Low temperature resistance: LSAW steel pipes can still maintain good toughness and plasticity in low temperature environments, and are not prone to brittle fracture.

Strong corrosion resistance: After anti-corrosion treatment, steel pipes can effectively resist the corrosion of petroleum and its derivatives on pipelines, extending their service life.

2. Compliant with API standards

Designated applicable pipe type: According to API standards, when passing through Class 1 and Class 2 areas such as high-altitude zones, underwater areas, and densely populated urban areas in large oil and gas pipelines, straight seam submerged arc welded pipes are the only designated applicable pipe type.

3. Advanced manufacturing technology

High quality raw materials: LSAW steel pipes are made from single medium thick plates, ensuring the quality of raw materials for steel pipes.

Forming process: Steel plates are pressed (rolled) into billets through molds or forming machines, and double-sided submerged arc welding is used. The toughness, plasticity, uniformity, and density of the weld seam are good.

Expanding treatment: After welding is completed, expanding treatment is carried out to further improve the strength and stability of the steel pipe.

4. Significant economic benefits

Low transportation cost: The large diameter and long-distance high-pressure conveying capacity of LSAW steel pipes make the transportation cost of oil relatively low.

Long service life: Due to its excellent physical properties and corrosion resistance, LSAW steel pipes have a longer service life, reducing the frequency and cost of pipeline replacement.

In summary, LSAW steel pipes are highly suitable for petroleum transportation due to their excellent physical properties, compliance with API standards, advanced manufacturing processes, and significant economic benefits. In the field of petroleum transportation, LSAW steel pipes play an irreplaceable role, providing strong support for the steady development of the petroleum industry.

Although LSAW steel pipe (straight seam submerged arc welded pipe) has many advantages, there are also some disadvantages in practical applications, as follows:

Relatively low production efficiency: Compared with some other steel pipe manufacturing processes, the production process of LSAW steel pipes may be more complex, requiring multiple processes including steel plate forming, welding, and diameter expansion, which may result in relatively low production efficiency. However, this drawback is usually acceptable in the production demand for high-quality and high-strength steel pipes, as the finished quality of LSAW steel pipes is often higher.

High equipment requirements: The production of LSAW steel pipes requires large-scale professional equipment, including forming machines, welding equipment, expanding machines, etc. The investment and maintenance costs of these devices are relatively high, which may pose certain economic pressure for small or medium-sized enterprises. At the same time, the operation of these devices also requires a certain level of technical expertise and experience, which places high demands on the operators.

Not applicable to all sites: Due to the need for large-scale equipment coordination in the production and installation process of LSAW steel pipes, their application may be limited in some small construction sites or complex geological conditions. This requires full consideration of factors such as pipeline transportation, installation, and maintenance during the project planning and design phase.

Not suitable for producing large diameter, thick walled pipes: Although LSAW steel pipes have a wide range of finished specifications, there may be certain limitations in producing extremely large diameter or thick walled pipes. This is mainly due to limitations in raw materials and manufacturing processes. However, with the continuous advancement of technology and the upgrading of equipment, this drawback may gradually be overcome.

Overall, the shortcomings of LSAW steel pipes mainly focus on their production efficiency, equipment requirements, on-site applicability, and production specifications. However, in the construction of high-strength, high-quality long-distance pipelines such as oil and natural gas, LSAW steel pipes are still widely used due to their excellent physical properties, compliance with API standards, and advanced manufacturing processes.