LSAW Steel Pipe, also known as longitudinally submerged arc welding steel pipe, can be divided into the following types according to different forming methods:

UOE welded pipe:

Manufacturing process: After pre bending at the edge, a single steel plate is produced through processes such as U-forming, O-forming, internal welding, external welding, and mechanical cold expansion.

Characteristics: The weld seam has good toughness, plasticity, uniformity, and density, with advantages such as large pipe diameter, thick pipe wall, high pressure resistance, low temperature resistance, and strong corrosion resistance.

JCOE welded pipe:

Manufacturing process: Pre welding, forming, and welding are carried out in the order of "J-C-O-E", and then produced through processes such as cold expansion.

Characteristics: Compared to UOE molding method, JCOE molding process has lower cost, stronger process adaptability, less mold wear and lighter weight. However, due to multiple molding processes, its processing efficiency may be slightly lower compared to UOE technology, but it has fewer molds and lower equipment investment.

HME welded pipe:

Manufacturing process: It is formed and welded in the order of "C-C-O" using the core rod rolling method, and then produced through processes such as cold expansion.

Characteristics: This molding method has unique advantages in certain specific scenarios, but specific features may vary depending on the manufacturer and product specifications.

LSAW steel pipes are widely used in the construction of high-strength, high-quality long-distance oil and gas pipelines, especially in complex environments such as high-altitude zones, underwater areas, and densely populated urban areas. Their excellent performance makes them the preferred pipe type. Meanwhile, LSAW steel pipes also have broad application prospects in fields such as petroleum, natural gas, chemical, and construction.

LSAW steel pipes, also known as straight seam submerged arc welded steel pipes, are mainly divided into three types based on their forming methods: UOE welded pipes, JCOE welded pipes, and HME welded pipes. Here is a detailed comparison of these three molding methods:

1. UOE welded pipe

Manufacturing process:

After pre bending at the edge, a single steel plate is produced through processes such as U-forming, O-forming, internal welding, external welding, and mechanical cold expansion.

characteristic:

The weld quality is high, with good toughness, plasticity, uniformity, and density.

With a large diameter and thick wall, it can withstand high pressure and low temperature environments.

The manufacturing process is complex, requiring high-precision equipment and skilled operating techniques.

Application scenarios:

Mainly used in high demand fields such as long-distance oil and gas pipelines, urban pipeline networks, and coal (ore) slurry transportation.

2. JCOE welded pipe

Manufacturing process:

Pre welding, forming, and welding are carried out in the order of "J-C-O-E", and then produced through processes such as cold expansion.

The specific steps include J-type (edge pressing, pre bending), C-type (forming), O-type (sizing), and E-type (expansion, flat head, hydrostatic test, pipe cutting), etc.

characteristic:

Compared to UOE molding method, JCOE molding process has lower cost and stronger process adaptability.

The molding mold has minimal wear and is lightweight, making it easy to maintain and replace.

However, due to multiple molding processes, its processing efficiency may be slightly lower compared to UOE technology.

Application scenarios:

Widely used in fields such as oil and gas pipelines, water pipelines, and structural construction.

Especially suitable for scenarios with high requirements for the quality and performance of steel pipes.

3. HME welded pipe

Manufacturing process:

Formed and welded in the "C-C-O" sequence using the core rod rolling method, and then produced through processes such as cold expansion.

characteristic:

The manufacturing process is relatively simple and the production efficiency is high.

But the specific characteristics may vary depending on the manufacturer and product specifications.

Application scenarios:

Mainly used in fields with relatively low requirements for the quality and performance of steel pipes.

In certain specific scenarios, such as when rapid production and cost reduction are required, HME welded pipes may be a suitable choice.

general comparison

Quality: UOE welded pipes usually have the highest quality, followed by JCOE welded pipes, and HME welded pipes may be relatively lower (but it depends on the manufacturer and product specifications).

Cost: HME welded pipes usually have the lowest cost, followed by JCOE welded pipes, and UOE welded pipes have the highest cost.

Efficiency: HME welded pipes usually have the highest production efficiency, while UOE welded pipes may have relatively lower efficiency due to their complex process.

Application scenario: UOE welded pipes are more suitable for high demand fields, such as long-distance oil and gas pipelines; JCOE welded pipes are widely used in multiple fields; HME welded pipes may be more suitable for scenarios with relatively low quality requirements.

In summary, each of the three forming methods for LSAW steel pipes has its own advantages and disadvantages. The choice of forming method mainly depends on the specific application scenario and requirements.