Published: 27 May 2019
LSAW is short for Longitudinal Submerged Arc-Welding. It is one type of pipe welding process. LSAW is taking the steel plate as raw material, mold it by the molding machine, then do double side submerged arc welding.
This kind of welding process has excellent ductility, weld toughness, uniformity, plasticity, great sealing.
LSAW producing method limited the diameters range. But it is larger than ERW steel pipe. Normally pipe outside diameter range from 16 INCH to 60 INCH (406 mm to 1524 mm). Its good performances on high-pressure resistance and low-temperature corrosion resistance make it very popular.
Applications of LSAW pipe
It has been widely applied in the oil and gas pipelines, especially required large diameter and thick wall pipe with high strength and long distance. Meanwhile in construction of a structure that needs tough strength, water treatment, thermal industry, bridge building, etc.
According to API specifications, the LSAW pipe is specially designated in large scaled oil and gas transportation, in the cases that pipeline across the city, sea, and the urban area. These are class 1 and class 2 areas.
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