Definition of LSAW steel pipe and SSAW steel pipe
LSAW steel pipe is the hot rolled plate volume after molding machine molding, the deformation of steel coil to smooth cylinder, using high frequency current skin effect and proximity effect or flux layer burning under the arc welding, the tube billet is heated to melt, and fusion under certain extrusion effect, after the final cooling forming. Among them, high frequency current melting is called high frequency straight seam welded tube (ERW), which is known as straight seam submerged arc welding (LSAW).
LSAW steel pipe main raw material is low carbon steel hot-rolled coil, hot rolled band, in petroleum, metallurgy, construction, coal mine, port, machinery and other industries are widely used in oil and gas transportation, low pressure water gas, mine fluid conveyor, belt conveyor roller, auto transmission shaft, etc.
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