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Welded Pipe is manufactured by rolling metal and then welding it longitudinally across its length, therefore welded pipes have a welded joint in its cross-section.
This production method is known for its durability and cost-effectiveness, making welded steel pipes a reliable choice for various applications.
Types Of Welded Steel Pipes
ERW PIPES
These pipes are manufactured longitudinally from strip or coil materials and can be produced up to 25″ OD. The ERW process involves cold forming a ribbon of steel through a series of rollers, forming a tube fused through an electric charge. These pipes are commonly used for low to medium-pressure applications, including the transportation of water and oil, applicable to both stainless steel and carbon steel pipes.
EFW Pipes
EFW pipes are created by rolling plates and welding the seams. This process, ideal for large-diameter pipes, utilizes a longitudinal seam weld made by heating with an electric arc between bare metal electrodes. EFW pipes are primarily applicable to carbon steel pipes.
LSAW PIPES (Straight Welded Pipes)
Longitudinally Submerged Arc Welding (LSAW) pipes are crafted from a single plate of steel, applying double-sided submerged arc welding. The result is larger-diameter pipes with welding joints boasting excellent ductility, plasticity, and sealing properties. LSAW pipes are commonly used for carbon steel applications.
SSAW PIPES (Spiral Pipes, Spiral Welded Pipes)
SSAW pipes, also known as Spiral Submerged Arc-Welding Pipes, exhibit a unique helical welding line shape. This welding technique involves rolling the steel strip to create an angle with the direction of the pipe center, forming and welding the spiral seam. Unlike LSAW pipes, SSAW pipes are spiral welded. They are applicable to carbon steel pipes.