LSAW Steel Pipe Shaping Methods
LSAW steel pipe (Longitudinally Submerged Arc Welding is abbreviated as LSAW) is a professional expression term for straight seam submerged arc welded steel pipe. LSAW steel pipe is produced by using a single medium-thick plate as a raw material, pressing (rolling) the steel plate into a tube blank in a mold or forming machine, and using double-sided submerged arc welding and expanding the diameter. The finished product has a wide range of specifications, good toughness, plasticity, uniformity and compactness of the weld, and has the advantages of large pipe diameter, pipe wall thickness, high pressure resistance, low temperature resistance and corrosion resistance. When constructing high-strength, high-quality long-distance oil and gas pipelines, most of the steel pipes required are large-diameter thick-walled straight-seam submerged arc welded pipes. According to the API standard, in large oil and gas pipelines, when passing through Class 1 and Class 2 areas such as alpine are...