Tianjin Lefin Industrial Co., Ltd is one of the most experienced manufacturers and suppliers of lsaw in China. Please feel free to buy high quality lsaw from our factory. Good service and reasonable price are available.
LSAW pipe diameter range is larger than ERW (Electric resistance welding), normally from 16 inch (406 mm) to 60 inch (1500 mm). Good performances on high pressure resistance, and low-temperature corrosion resistance.
In LSAW pipe mills, processing is carried out by cold forming heavy carbon steel plates, the pipe pre‐material on which many of the pipe properties depend.
The material of LSAW steel pipe is unit middle or heavy thickness sheet, coiled in the molding or forming machine, welded by double submerged arc welding and expand the diameter. The specification scope is wide, and have good toughness, ductility, uniformity, compactness, etc.
Longitudinal submerged arc welded (LSAW) pipes manufacture process is bending and welding wide steel plates to pipes from leveled hot rolled coils by both the JCOE and UOE (the forming process in which the plate like the letter "J", "C", "O" or "U" shape, then expansion) forming processes.
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