Lsaw pipe (Longitudinal Submerged Arc-Welding Pipe), also called sawl pipe. It is taking the steel plate as raw material, mold it by the molding machine, then do double-sided submerged arc welding. Through this process the lsaw steel pipe will get excellent ductility, weld toughness, uniformity, plasticity and great sealing. The lsaw pipe diameter range is larger than erw, normally from 16 inch to 60 inch, 406mm to 1500mm. Good performances on high pressure resistance, and low-temperature corrosion resistance.

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