Welded Line Pipe(ERW/LSAW/SSAW)

The JCOE (J-ing, C-ing, O-ing, Expanding) process is a specific method used in the manufacturing of Longitudinal Submerged Arc Welded (LSAW) pipes. This process is most commonly employed to produce large-diameter and thick-walled steel pipes, such as those used in oil and gas pipelines or structural applications.

Definition of JCEO Process for Welded Pipe

J-ing (Forming):

The initial step involves forming the plate into a "J" shape. The flat steel plate is first bent into a J shape, forming the longitudinal seam of the pipe.

C-ing (Pre-bending):

The J-shaped plate is then subjected to pre-bending to create a C shape. This pre-bending is done to ensure that the edges of the plate are properly aligned for welding.

O-ing (Oval Forming):

Subsequently, the C-shaped plate is further deformed into an O shape. This step helps to achieve the final cylindrical shape of the pipe.

Expanding:

After forming the O shape, the pipe is expanded to its final diameter using a mechanical expander. This step ensures that the pipe has the desired dimensions and meets the specified tolerances.

Size Chart of JCEO LSAW Pipe

Advantages of JCOE LSAW Manufacturing Process in Welding Steel Pipe

The JCOE (J-ing, C-ing, O-ing, Expanding) process for manufacturing Longitudinal Submerged Arc Welded (LSAW) pipes offers several advantages, making it a popular choice for producing large-diameter, thick-walled steel pipes.

High Production Efficiency:

The JCOE process is known for its high production efficiency, enabling the fabrication of large-diameter pipes with relatively short production cycles.

Flexible In Diameter And Wall Thickness:

The JCOE process allows for the production of a wide range of pipe sizes, including large-diameter and thick-walled pipes. This flexibility makes it suitable for various applications, including oil and gas pipelines and structural projects.

Excellent Weld Quality:

The submerged arc welding (SAW) method used in the JCOE process results in high-quality welds. This welding technique ensures deep penetration, uniform fusion, and a strong bond between the welded sections, contributing to the overall integrity of the pipe.

Uniform Wall Thickness:

The JCOE process helps achieve uniform wall thickness along the length of the pipe. This uniformity is essential for maintaining the structural integrity and performance of the pipe in different applications.

Cost-Effective For Large-Diameter Pipes:

JCOE LSAW is particularly cost-effective for producing large-diameter pipes compared to some other manufacturing methods. This cost efficiency is significant for projects where large volumes of steel pipes are required.

Versatility In Materials:

The JCOE process can be applied to various steel materials, including carbon steel, alloy steel, and stainless steel. This versatility allows manufacturers to produce pipes with different material properties based on the project requirements.

Robust Weld Seam:

The JCOE process results in a robust and durable longitudinal weld seam. This is essential for ensuring the long-term reliability and performance of the welded line pipe, especially in critical applications.

Applicable to Thick-Walled Pipes:

The JCOE process is particularly well-suited for manufacturing thick-walled pipes. This is advantageous in situations where pipes with high wall thickness are required for structural or pressure-containing applications.

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