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LSAW Pipes

LSAW pipes, or Longitudinal Submerged Arc Welded pipes, are large-diameter steel pipes commonly used in the construction of oil and gas pipelines, as well as in various industrial applications. The LSAW manufacturing process involves forming a straight seam along the length of a steel plate or coil using submerged arc welding. During the LSAW process, the steel plate or coil is first molded into a cylindrical shape. Subsequently, the edges are then welded together using submerged arc welding. This results in a strong, continuous seam along the length of the pipe.

LSAW pipes are known for their high-strength and integrity, making them suitable for applications that require efficient transportation of fluids or structural support over long distances. The straight seam design contributes to the pipe’s stability and ease of inspection.

Steel Grades:

ASTM A139
ASM A252
AWWA C200

Maximum Length/Width

Depending on the request since the item is fabricated.

Lead Time

2 - 3 weeks

APPLICATIONS

Bridges

Drainage systems

Industrial construction

FREQUENTLY ASKED QUESTIONS

What type of steel plates are used to produce LSAW pipes?

LSAW pipes are produced using high-quality steel plates, typically carbon steel or low-alloy steel plates with controlled strength and toughness. These plates ensure the pipes can handle high pressure and demanding applications such as oil and gas pipelines.

Are LSAW pipes suitable for large-diameter applications?

Yes, LSAW pipes are suitable for large-diameter applications, typically ranging from 16 to 60 inches (406 mm to 1626 mm) or larger. Their longitudinal weld and high-quality steel plates provide the strength and reliability needed for demanding pipeline projects.

When should LSAW pipes be used instead of SSAW pipes?

LSAW pipes should be used instead of SSAW pipes when higher pressure, tighter dimensional tolerance, and superior weld quality are required. They are ideal for critical applications such as oil and gas transmission, where strength and reliability are essential.

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