The welding of spiral welded pipes is based on the Double Side Submerged Arc Welding (DSAW) process.
Arc welding works by utilizing an electric current to create an electric arc in a gaseous environment. The heat of the arc causes the metal to reach the melting point. A key issue is how to increase the concentration and energy intensity of the arc.
DSAW's better depth of fusion allows for higher welding travel speeds without compromising quality, resulting in higher productivity and lower costs.
Spiral Welded Pipe Manufacturing Process Specification
